./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+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_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/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_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/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_71c488ea-0185-434f-8676-2a5cbd76b3d7/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 3add2c82410ff745811ed91690a644a775913a086eeabc1a421c899bac857c34 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:47:46,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:47:46,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:47:46,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:47:46,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:47:46,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:47:46,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:47:46,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:47:46,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:47:46,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:47:46,945 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:47:46,945 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:47:46,946 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:47:46,946 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:47:46,947 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:47:46,947 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:47:46,948 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:47:46,948 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:47:46,949 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:47:46,949 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:47:46,950 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:47:46,954 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:47:46,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:47:46,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:47:46,955 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:47:46,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:47:46,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:47:46,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:47:46,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:47:46,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:47:46,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:47:46,957 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:47:46,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:47:46,958 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:47:46,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:47:46,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:47:46,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:47:46,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:47:46,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:47:46,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:47:46,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:47:46,960 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:47:46,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:47:46,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:47:46,960 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:47:46,960 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:47:46,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:47:46,961 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_71c488ea-0185-434f-8676-2a5cbd76b3d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3add2c82410ff745811ed91690a644a775913a086eeabc1a421c899bac857c34 [2023-12-02 12:47:47,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:47:47,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:47:47,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:47:47,238 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:47:47,238 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:47:47,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c [2023-12-02 12:47:49,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:47:50,541 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:47:50,542 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c [2023-12-02 12:47:50,590 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/data/00d9dbc0b/eb994bb5fc9b41069746f650117cc90b/FLAG01b02638d [2023-12-02 12:47:50,604 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/data/00d9dbc0b/eb994bb5fc9b41069746f650117cc90b [2023-12-02 12:47:50,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:47:50,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:47:50,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:47:50,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:47:50,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:47:50,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:47:50" (1/1) ... [2023-12-02 12:47:50,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f68984e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:50, skipping insertion in model container [2023-12-02 12:47:50,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:47:50" (1/1) ... [2023-12-02 12:47:50,927 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:47:52,856 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_71c488ea-0185-434f-8676-2a5cbd76b3d7/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c[380593,380606] [2023-12-02 12:47:52,884 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_71c488ea-0185-434f-8676-2a5cbd76b3d7/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c[383339,383352] [2023-12-02 12:47:53,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:47:53,078 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:47:54,042 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_71c488ea-0185-434f-8676-2a5cbd76b3d7/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c[380593,380606] [2023-12-02 12:47:54,047 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_71c488ea-0185-434f-8676-2a5cbd76b3d7/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c[383339,383352] [2023-12-02 12:47:54,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:47:54,134 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:47:54,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54 WrapperNode [2023-12-02 12:47:54,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:47:54,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:47:54,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:47:54,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:47:54,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,492 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12754 [2023-12-02 12:47:54,492 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:47:54,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:47:54,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:47:54,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:47:54,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:47:54,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:47:54,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:47:54,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:47:54,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (1/1) ... [2023-12-02 12:47:54,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:47:54,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:47:54,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:47:54,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:47:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:47:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-02 12:47:55,009 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-02 12:47:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-02 12:47:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-02 12:47:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-02 12:47:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-02 12:47:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-02 12:47:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-02 12:47:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-02 12:47:55,011 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-02 12:47:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-02 12:47:55,011 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-02 12:47:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-02 12:47:55,011 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-02 12:47:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:47:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:47:55,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:47:55,128 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:47:55,130 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:48:02,754 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:48:04,501 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:48:04,501 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-02 12:48:04,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:04 BoogieIcfgContainer [2023-12-02 12:48:04,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:48:04,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:48:04,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:48:04,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:48:04,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:47:50" (1/3) ... [2023-12-02 12:48:04,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fb7925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:04, skipping insertion in model container [2023-12-02 12:48:04,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:54" (2/3) ... [2023-12-02 12:48:04,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fb7925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:04, skipping insertion in model container [2023-12-02 12:48:04,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:04" (3/3) ... [2023-12-02 12:48:04,512 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.04.cil-2.c [2023-12-02 12:48:04,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:48:04,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 12:48:04,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:48:04,614 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;@4953c80e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:48:04,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 12:48:04,624 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 12:48:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 12:48:04,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:04,635 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 12:48:04,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:04,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1444221430, now seen corresponding path program 1 times [2023-12-02 12:48:04,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:04,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467526492] [2023-12-02 12:48:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:04,974 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 12:48:04,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:04,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467526492] [2023-12-02 12:48:04,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467526492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:04,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:48:04,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:48:04,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599699431] [2023-12-02 12:48:04,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:04,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:48:04,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:05,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:48:05,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:48:05,021 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 12:48:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:05,903 INFO L93 Difference]: Finished difference Result 3595 states and 7014 transitions. [2023-12-02 12:48:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:48:05,906 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 12:48:05,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:05,930 INFO L225 Difference]: With dead ends: 3595 [2023-12-02 12:48:05,930 INFO L226 Difference]: Without dead ends: 1840 [2023-12-02 12:48:05,939 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 12:48:05,942 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 3533 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 6508 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:05,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 6508 Invalid, 616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 12:48:05,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2023-12-02 12:48:06,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1839. [2023-12-02 12:48:06,059 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 12:48:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 3546 transitions. [2023-12-02 12:48:06,071 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 3546 transitions. Word has length 44 [2023-12-02 12:48:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:06,072 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 3546 transitions. [2023-12-02 12:48:06,072 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 12:48:06,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 3546 transitions. [2023-12-02 12:48:06,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 12:48:06,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:06,080 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 12:48:06,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:48:06,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:06,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1395171591, now seen corresponding path program 1 times [2023-12-02 12:48:06,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:06,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247835267] [2023-12-02 12:48:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:06,259 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 12:48:06,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:06,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247835267] [2023-12-02 12:48:06,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247835267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733991145] [2023-12-02 12:48:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:06,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:06,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:06,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:06,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:48:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:06,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:48:06,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:06,464 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 12:48:06,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:48:06,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733991145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:06,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:48:06,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-02 12:48:06,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989558872] [2023-12-02 12:48:06,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:06,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:48:06,468 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 12:48:06,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:06,893 INFO L93 Difference]: Finished difference Result 2218 states and 4089 transitions. [2023-12-02 12:48:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:06,893 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 12:48:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:06,907 INFO L225 Difference]: With dead ends: 2218 [2023-12-02 12:48:06,908 INFO L226 Difference]: Without dead ends: 2025 [2023-12-02 12:48:06,909 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 12:48:06,910 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 12:48:06,911 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 12:48:06,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2023-12-02 12:48:06,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2019. [2023-12-02 12:48:06,963 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 12:48:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3795 transitions. [2023-12-02 12:48:06,971 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3795 transitions. Word has length 82 [2023-12-02 12:48:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:06,972 INFO L495 AbstractCegarLoop]: Abstraction has 2019 states and 3795 transitions. [2023-12-02 12:48:06,972 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 12:48:06,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3795 transitions. [2023-12-02 12:48:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 12:48:06,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:06,976 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 12:48:06,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:48:07,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 12:48:07,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:07,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:07,180 INFO L85 PathProgramCache]: Analyzing trace with hash -547120359, now seen corresponding path program 1 times [2023-12-02 12:48:07,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:07,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636323271] [2023-12-02 12:48:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:07,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:07,310 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 12:48:07,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:07,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636323271] [2023-12-02 12:48:07,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636323271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:07,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922611128] [2023-12-02 12:48:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:07,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:07,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:07,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:07,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 12:48:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:07,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:48:07,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:07,502 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 12:48:07,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:48:07,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922611128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:07,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:48:07,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-02 12:48:07,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823596599] [2023-12-02 12:48:07,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:07,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:07,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:07,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:48:07,505 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 12:48:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:07,954 INFO L93 Difference]: Finished difference Result 2752 states and 4838 transitions. [2023-12-02 12:48:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:07,954 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 12:48:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:07,970 INFO L225 Difference]: With dead ends: 2752 [2023-12-02 12:48:07,970 INFO L226 Difference]: Without dead ends: 2379 [2023-12-02 12:48:07,973 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 12:48:07,974 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 12:48:07,974 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 12:48:07,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2023-12-02 12:48:08,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2371. [2023-12-02 12:48:08,056 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 12:48:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 4277 transitions. [2023-12-02 12:48:08,070 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 4277 transitions. Word has length 82 [2023-12-02 12:48:08,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:08,071 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 4277 transitions. [2023-12-02 12:48:08,071 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 12:48:08,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 4277 transitions. [2023-12-02 12:48:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 12:48:08,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:08,075 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 12:48:08,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 12:48:08,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:08,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:08,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash 749497081, now seen corresponding path program 1 times [2023-12-02 12:48:08,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:08,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947062442] [2023-12-02 12:48:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:08,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:08,363 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 12:48:08,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:08,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947062442] [2023-12-02 12:48:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947062442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:08,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:48:08,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:48:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025182620] [2023-12-02 12:48:08,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:08,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:08,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:08,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:08,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:48:08,367 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 12:48:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:08,909 INFO L93 Difference]: Finished difference Result 2947 states and 5092 transitions. [2023-12-02 12:48:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:08,909 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 12:48:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:08,926 INFO L225 Difference]: With dead ends: 2947 [2023-12-02 12:48:08,927 INFO L226 Difference]: Without dead ends: 2567 [2023-12-02 12:48:08,929 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 12:48:08,930 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:08,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 6431 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:48:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2023-12-02 12:48:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2495. [2023-12-02 12:48:09,019 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 12:48:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 4465 transitions. [2023-12-02 12:48:09,030 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 4465 transitions. Word has length 82 [2023-12-02 12:48:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:09,030 INFO L495 AbstractCegarLoop]: Abstraction has 2495 states and 4465 transitions. [2023-12-02 12:48:09,031 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 12:48:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 4465 transitions. [2023-12-02 12:48:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 12:48:09,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:09,035 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 12:48:09,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 12:48:09,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:09,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:09,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1367366963, now seen corresponding path program 1 times [2023-12-02 12:48:09,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:09,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538361014] [2023-12-02 12:48:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:09,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:09,119 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 12:48:09,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:09,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538361014] [2023-12-02 12:48:09,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538361014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:09,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:48:09,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:48:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496210989] [2023-12-02 12:48:09,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:09,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:09,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:09,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:09,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:48:09,121 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 12:48:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:09,571 INFO L93 Difference]: Finished difference Result 4156 states and 6826 transitions. [2023-12-02 12:48:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:09,572 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 12:48:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:09,593 INFO L225 Difference]: With dead ends: 4156 [2023-12-02 12:48:09,593 INFO L226 Difference]: Without dead ends: 3307 [2023-12-02 12:48:09,597 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 12:48:09,598 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:09,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3387 Valid, 3312 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:48:09,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2023-12-02 12:48:09,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 3291. [2023-12-02 12:48:09,719 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 12:48:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 5553 transitions. [2023-12-02 12:48:09,733 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 5553 transitions. Word has length 109 [2023-12-02 12:48:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:09,734 INFO L495 AbstractCegarLoop]: Abstraction has 3291 states and 5553 transitions. [2023-12-02 12:48:09,734 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 12:48:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 5553 transitions. [2023-12-02 12:48:09,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 12:48:09,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:09,741 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 12:48:09,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 12:48:09,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:09,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:09,742 INFO L85 PathProgramCache]: Analyzing trace with hash 625474217, now seen corresponding path program 1 times [2023-12-02 12:48:09,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:09,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941829057] [2023-12-02 12:48:09,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:09,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:09,814 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 12:48:09,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:09,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941829057] [2023-12-02 12:48:09,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941829057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:09,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:48:09,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:48:09,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366223886] [2023-12-02 12:48:09,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:09,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:09,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:09,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:09,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:48:09,816 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 12:48:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:10,309 INFO L93 Difference]: Finished difference Result 6508 states and 10066 transitions. [2023-12-02 12:48:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:10,309 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 12:48:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:10,339 INFO L225 Difference]: With dead ends: 6508 [2023-12-02 12:48:10,339 INFO L226 Difference]: Without dead ends: 4863 [2023-12-02 12:48:10,347 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 12:48:10,347 INFO L413 NwaCegarLoop]: 3208 mSDtfsCounter, 3390 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:10,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3390 Valid, 3325 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:48:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2023-12-02 12:48:10,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4835. [2023-12-02 12:48:10,536 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 12:48:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 7633 transitions. [2023-12-02 12:48:10,551 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 7633 transitions. Word has length 109 [2023-12-02 12:48:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:10,551 INFO L495 AbstractCegarLoop]: Abstraction has 4835 states and 7633 transitions. [2023-12-02 12:48:10,552 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 12:48:10,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 7633 transitions. [2023-12-02 12:48:10,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 12:48:10,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:10,564 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 12:48:10,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 12:48:10,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:10,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:10,565 INFO L85 PathProgramCache]: Analyzing trace with hash -149734594, now seen corresponding path program 1 times [2023-12-02 12:48:10,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:10,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087209808] [2023-12-02 12:48:10,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:10,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:10,842 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 12:48:10,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:10,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087209808] [2023-12-02 12:48:10,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087209808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:10,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471951666] [2023-12-02 12:48:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:10,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:10,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:10,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:10,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 12:48:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:11,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:48:11,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:11,111 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 12:48:11,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:48:11,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471951666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:11,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:48:11,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 12:48:11,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510191431] [2023-12-02 12:48:11,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:11,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:48:11,115 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 12:48:11,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:11,686 INFO L93 Difference]: Finished difference Result 6499 states and 10031 transitions. [2023-12-02 12:48:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:11,687 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 12:48:11,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:11,716 INFO L225 Difference]: With dead ends: 6499 [2023-12-02 12:48:11,716 INFO L226 Difference]: Without dead ends: 4855 [2023-12-02 12:48:11,724 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 12:48:11,725 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 12:48:11,725 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 12:48:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2023-12-02 12:48:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4819. [2023-12-02 12:48:11,905 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 12:48:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 7553 transitions. [2023-12-02 12:48:11,919 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 7553 transitions. Word has length 124 [2023-12-02 12:48:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:11,919 INFO L495 AbstractCegarLoop]: Abstraction has 4819 states and 7553 transitions. [2023-12-02 12:48:11,920 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 12:48:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 7553 transitions. [2023-12-02 12:48:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 12:48:11,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:11,932 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 12:48:11,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 12:48:12,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 12:48:12,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:12,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash -340810240, now seen corresponding path program 1 times [2023-12-02 12:48:12,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:12,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368963557] [2023-12-02 12:48:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:12,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:12,397 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 12:48:12,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368963557] [2023-12-02 12:48:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368963557] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420491140] [2023-12-02 12:48:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:12,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:12,399 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:12,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 12:48:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:12,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:48:12,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:12,595 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 12:48:12,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:48:12,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420491140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:12,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:48:12,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 12:48:12,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228783810] [2023-12-02 12:48:12,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:12,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:12,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:12,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:48:12,598 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 12:48:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:13,068 INFO L93 Difference]: Finished difference Result 7153 states and 10638 transitions. [2023-12-02 12:48:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:13,069 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 12:48:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:13,095 INFO L225 Difference]: With dead ends: 7153 [2023-12-02 12:48:13,096 INFO L226 Difference]: Without dead ends: 5533 [2023-12-02 12:48:13,102 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 12:48:13,103 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 3399 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 12:48:13,103 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 12:48:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2023-12-02 12:48:13,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5533. [2023-12-02 12:48:13,307 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 12:48:13,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 8347 transitions. [2023-12-02 12:48:13,321 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 8347 transitions. Word has length 124 [2023-12-02 12:48:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:13,322 INFO L495 AbstractCegarLoop]: Abstraction has 5533 states and 8347 transitions. [2023-12-02 12:48:13,322 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 12:48:13,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 8347 transitions. [2023-12-02 12:48:13,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 12:48:13,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:13,336 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 12:48:13,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 12:48:13,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:13,542 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:13,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:13,542 INFO L85 PathProgramCache]: Analyzing trace with hash 434954765, now seen corresponding path program 1 times [2023-12-02 12:48:13,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:13,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660954295] [2023-12-02 12:48:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:13,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:13,765 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 12:48:13,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:13,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660954295] [2023-12-02 12:48:13,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660954295] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:13,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966749023] [2023-12-02 12:48:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:13,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:13,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:13,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:13,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 12:48:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:13,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:48:13,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:13,951 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 12:48:13,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:48:13,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966749023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:13,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:48:13,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 12:48:13,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638848025] [2023-12-02 12:48:13,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:13,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:13,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:13,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:13,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:48:13,954 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 12:48:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:14,522 INFO L93 Difference]: Finished difference Result 10841 states and 15428 transitions. [2023-12-02 12:48:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:14,523 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 12:48:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:14,541 INFO L225 Difference]: With dead ends: 10841 [2023-12-02 12:48:14,542 INFO L226 Difference]: Without dead ends: 6955 [2023-12-02 12:48:14,549 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 12:48:14,550 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 12:48:14,551 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 12:48:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2023-12-02 12:48:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 5973. [2023-12-02 12:48:14,702 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 12:48:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 8995 transitions. [2023-12-02 12:48:14,711 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 8995 transitions. Word has length 124 [2023-12-02 12:48:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:14,711 INFO L495 AbstractCegarLoop]: Abstraction has 5973 states and 8995 transitions. [2023-12-02 12:48:14,712 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 12:48:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 8995 transitions. [2023-12-02 12:48:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 12:48:14,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:14,722 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 12:48:14,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 12:48:14,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 12:48:14,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:14,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:14,924 INFO L85 PathProgramCache]: Analyzing trace with hash 391468224, now seen corresponding path program 2 times [2023-12-02 12:48:14,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:14,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027486767] [2023-12-02 12:48:14,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:14,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:15,042 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 12:48:15,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027486767] [2023-12-02 12:48:15,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027486767] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:15,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198300197] [2023-12-02 12:48:15,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:48:15,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:15,044 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:15,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 12:48:15,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 12:48:15,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:48:15,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:48:15,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:15,223 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 12:48:15,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:48:15,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198300197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:15,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:48:15,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 12:48:15,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730668221] [2023-12-02 12:48:15,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:15,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:15,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:15,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:48:15,225 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 12:48:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:15,780 INFO L93 Difference]: Finished difference Result 9659 states and 14005 transitions. [2023-12-02 12:48:15,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:15,781 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 12:48:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:15,798 INFO L225 Difference]: With dead ends: 9659 [2023-12-02 12:48:15,798 INFO L226 Difference]: Without dead ends: 7447 [2023-12-02 12:48:15,804 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 12:48:15,804 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:15,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 6449 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:48:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7447 states. [2023-12-02 12:48:16,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7447 to 6757. [2023-12-02 12:48:16,061 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 12:48:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6757 states to 6757 states and 10115 transitions. [2023-12-02 12:48:16,076 INFO L78 Accepts]: Start accepts. Automaton has 6757 states and 10115 transitions. Word has length 124 [2023-12-02 12:48:16,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:16,077 INFO L495 AbstractCegarLoop]: Abstraction has 6757 states and 10115 transitions. [2023-12-02 12:48:16,077 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 12:48:16,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6757 states and 10115 transitions. [2023-12-02 12:48:16,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 12:48:16,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:16,091 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 12:48:16,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 12:48:16,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 12:48:16,292 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:16,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:16,292 INFO L85 PathProgramCache]: Analyzing trace with hash 744743866, now seen corresponding path program 1 times [2023-12-02 12:48:16,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:16,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119778033] [2023-12-02 12:48:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:16,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:16,435 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 12:48:16,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:16,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119778033] [2023-12-02 12:48:16,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119778033] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:16,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286798721] [2023-12-02 12:48:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:16,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:16,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:16,437 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:16,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 12:48:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:16,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:48:16,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:16,638 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 12:48:16,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:48:16,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286798721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:16,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:48:16,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 12:48:16,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962579116] [2023-12-02 12:48:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:16,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:48:16,641 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 12:48:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:17,284 INFO L93 Difference]: Finished difference Result 11451 states and 16549 transitions. [2023-12-02 12:48:17,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:17,285 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 12:48:17,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:17,302 INFO L225 Difference]: With dead ends: 11451 [2023-12-02 12:48:17,302 INFO L226 Difference]: Without dead ends: 8815 [2023-12-02 12:48:17,309 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 12:48:17,309 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:17,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 6461 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:48:17,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2023-12-02 12:48:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 7901. [2023-12-02 12:48:17,510 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 12:48:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 11731 transitions. [2023-12-02 12:48:17,522 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 11731 transitions. Word has length 124 [2023-12-02 12:48:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:17,522 INFO L495 AbstractCegarLoop]: Abstraction has 7901 states and 11731 transitions. [2023-12-02 12:48:17,522 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 12:48:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 11731 transitions. [2023-12-02 12:48:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 12:48:17,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:17,534 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 12:48:17,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 12:48:17,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 12:48:17,735 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:17,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash -279977340, now seen corresponding path program 1 times [2023-12-02 12:48:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:17,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994467980] [2023-12-02 12:48:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:17,848 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 12:48:17,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994467980] [2023-12-02 12:48:17,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994467980] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498324514] [2023-12-02 12:48:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:17,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:17,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:17,850 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:17,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 12:48:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:18,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:48:18,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:18,039 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 12:48:18,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:48:18,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498324514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:18,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:48:18,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 12:48:18,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123449542] [2023-12-02 12:48:18,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:18,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:18,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:18,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:18,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:48:18,042 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 12:48:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:18,661 INFO L93 Difference]: Finished difference Result 13507 states and 19421 transitions. [2023-12-02 12:48:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:18,662 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 12:48:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:18,690 INFO L225 Difference]: With dead ends: 13507 [2023-12-02 12:48:18,690 INFO L226 Difference]: Without dead ends: 10311 [2023-12-02 12:48:18,699 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 12:48:18,700 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:18,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 6456 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:48:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10311 states. [2023-12-02 12:48:19,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10311 to 9509. [2023-12-02 12:48:19,067 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 12:48:19,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 13939 transitions. [2023-12-02 12:48:19,088 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 13939 transitions. Word has length 124 [2023-12-02 12:48:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:19,088 INFO L495 AbstractCegarLoop]: Abstraction has 9509 states and 13939 transitions. [2023-12-02 12:48:19,088 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 12:48:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 13939 transitions. [2023-12-02 12:48:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 12:48:19,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:19,111 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 12:48:19,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 12:48:19,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 12:48:19,312 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:19,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2108581764, now seen corresponding path program 1 times [2023-12-02 12:48:19,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:19,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318574896] [2023-12-02 12:48:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:19,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:19,391 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 12:48:19,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:19,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318574896] [2023-12-02 12:48:19,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318574896] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:19,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864792910] [2023-12-02 12:48:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:19,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:19,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:19,393 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:19,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 12:48:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:19,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:48:19,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:19,575 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 12:48:19,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:48:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864792910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:19,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:48:19,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 12:48:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280937731] [2023-12-02 12:48:19,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:19,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:48:19,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:48:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:48:19,578 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 12:48:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:20,267 INFO L93 Difference]: Finished difference Result 16407 states and 23445 transitions. [2023-12-02 12:48:20,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:48:20,268 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 12:48:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:20,297 INFO L225 Difference]: With dead ends: 16407 [2023-12-02 12:48:20,297 INFO L226 Difference]: Without dead ends: 12519 [2023-12-02 12:48:20,305 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 12:48:20,306 INFO L413 NwaCegarLoop]: 3247 mSDtfsCounter, 73 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 12:48:20,306 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 12:48:20,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2023-12-02 12:48:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 11957. [2023-12-02 12:48:20,744 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 12:48:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11957 states to 11957 states and 17323 transitions. [2023-12-02 12:48:20,768 INFO L78 Accepts]: Start accepts. Automaton has 11957 states and 17323 transitions. Word has length 125 [2023-12-02 12:48:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:20,768 INFO L495 AbstractCegarLoop]: Abstraction has 11957 states and 17323 transitions. [2023-12-02 12:48:20,769 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 12:48:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 11957 states and 17323 transitions. [2023-12-02 12:48:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-02 12:48:20,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:20,791 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 12:48:20,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 12:48:20,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 12:48:20,991 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:20,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1319090601, now seen corresponding path program 1 times [2023-12-02 12:48:20,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:20,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732015359] [2023-12-02 12:48:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:20,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:21,418 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 12:48:21,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:21,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732015359] [2023-12-02 12:48:21,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732015359] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:21,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119994049] [2023-12-02 12:48:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:21,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:21,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:21,420 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:21,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 12:48:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:21,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 12:48:21,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:21,732 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 12:48:21,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:48:22,072 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 12:48:22,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119994049] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:48:22,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351361721] [2023-12-02 12:48:22,095 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2023-12-02 12:48:22,095 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:48:22,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:48:22,104 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:48:22,104 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:48:39,214 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 77 for LOIs [2023-12-02 12:48:39,224 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 141 for LOIs [2023-12-02 12:48:39,297 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 174 for LOIs [2023-12-02 12:48:39,588 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 12:48:39,589 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 12:48:39,599 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 114 for LOIs [2023-12-02 12:48:40,277 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2023-12-02 12:48:40,356 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:48:49,676 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 12:48:49,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:48:49,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:48:49,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 9 [2023-12-02 12:48:49,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011466419] [2023-12-02 12:48:49,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:48:49,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 12:48:49,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:49,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 12:48:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=3711, Unknown=0, NotChecked=0, Total=4032 [2023-12-02 12:48:49,680 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 12:48:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:50,997 INFO L93 Difference]: Finished difference Result 26101 states and 36541 transitions. [2023-12-02 12:48:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 12:48:50,998 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 12:48:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:51,024 INFO L225 Difference]: With dead ends: 26101 [2023-12-02 12:48:51,024 INFO L226 Difference]: Without dead ends: 15791 [2023-12-02 12:48:51,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=384, Invalid=4446, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 12:48:51,041 INFO L413 NwaCegarLoop]: 3201 mSDtfsCounter, 3607 mSDsluCounter, 6519 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:51,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3620 Valid, 9720 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 12:48:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15791 states. [2023-12-02 12:48:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15791 to 15539. [2023-12-02 12:48:51,475 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 12:48:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15539 states to 15539 states and 21981 transitions. [2023-12-02 12:48:51,498 INFO L78 Accepts]: Start accepts. Automaton has 15539 states and 21981 transitions. Word has length 129 [2023-12-02 12:48:51,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:51,499 INFO L495 AbstractCegarLoop]: Abstraction has 15539 states and 21981 transitions. [2023-12-02 12:48:51,499 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 12:48:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 15539 states and 21981 transitions. [2023-12-02 12:48:51,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 12:48:51,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:51,518 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 12:48:51,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 12:48:51,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 12:48:51,719 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:51,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:51,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1873631140, now seen corresponding path program 1 times [2023-12-02 12:48:51,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:51,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441191957] [2023-12-02 12:48:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:51,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:52,004 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 12:48:52,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:52,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441191957] [2023-12-02 12:48:52,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441191957] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:48:52,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383375106] [2023-12-02 12:48:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:52,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:48:52,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:48:52,006 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:48:52,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 12:48:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:52,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 12:48:52,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:48:52,298 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 12:48:52,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:48:52,863 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 12:48:52,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383375106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:48:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1214986097] [2023-12-02 12:48:52,867 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-12-02 12:48:52,867 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:48:52,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:48:52,868 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:48:52,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:48:59,581 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 12:48:59,582 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 12:48:59,703 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 12:48:59,890 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 12:48:59,891 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 12:48:59,901 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 12:48:59,983 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 12:49:00,024 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:49:07,724 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 12:49:07,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:49:07,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:49:07,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 16 [2023-12-02 12:49:07,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827868534] [2023-12-02 12:49:07,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:49:07,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 12:49:07,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 12:49:07,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=4586, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 12:49:07,728 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 12:49:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:13,685 INFO L93 Difference]: Finished difference Result 45064 states and 62711 transitions. [2023-12-02 12:49:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-12-02 12:49:13,685 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 12:49:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:13,759 INFO L225 Difference]: With dead ends: 45064 [2023-12-02 12:49:13,759 INFO L226 Difference]: Without dead ends: 30860 [2023-12-02 12:49:13,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 392 SyntacticMatches, 2 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13897 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=2804, Invalid=31978, Unknown=0, NotChecked=0, Total=34782 [2023-12-02 12:49:13,797 INFO L413 NwaCegarLoop]: 3598 mSDtfsCounter, 11453 mSDsluCounter, 25098 mSDsCounter, 0 mSdLazyCounter, 4055 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11459 SdHoareTripleChecker+Valid, 28696 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:49:13,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11459 Valid, 28696 Invalid, 4473 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 4055 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 12:49:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30860 states. [2023-12-02 12:49:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30860 to 21893. [2023-12-02 12:49:14,760 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 12:49:14,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21893 states to 21893 states and 29729 transitions. [2023-12-02 12:49:14,789 INFO L78 Accepts]: Start accepts. Automaton has 21893 states and 29729 transitions. Word has length 131 [2023-12-02 12:49:14,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:14,789 INFO L495 AbstractCegarLoop]: Abstraction has 21893 states and 29729 transitions. [2023-12-02 12:49:14,789 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 12:49:14,789 INFO L276 IsEmpty]: Start isEmpty. Operand 21893 states and 29729 transitions. [2023-12-02 12:49:14,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 12:49:14,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:14,801 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 12:49:14,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 12:49:15,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 12:49:15,001 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:15,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:15,002 INFO L85 PathProgramCache]: Analyzing trace with hash -346710632, now seen corresponding path program 1 times [2023-12-02 12:49:15,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:15,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632024288] [2023-12-02 12:49:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:15,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:15,204 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 12:49:15,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:15,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632024288] [2023-12-02 12:49:15,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632024288] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:49:15,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828481831] [2023-12-02 12:49:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:15,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:15,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:49:15,206 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:49:15,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 12:49:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:15,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:49:15,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:49:15,392 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 12:49:15,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:49:15,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828481831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:15,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:49:15,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-02 12:49:15,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934756289] [2023-12-02 12:49:15,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:15,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:49:15,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:15,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:49:15,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:49:15,394 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 12:49:16,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:16,626 INFO L93 Difference]: Finished difference Result 31133 states and 41875 transitions. [2023-12-02 12:49:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:49:16,626 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 12:49:16,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:16,654 INFO L225 Difference]: With dead ends: 31133 [2023-12-02 12:49:16,655 INFO L226 Difference]: Without dead ends: 22353 [2023-12-02 12:49:16,663 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 12:49:16,663 INFO L413 NwaCegarLoop]: 3238 mSDtfsCounter, 3360 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 12:49:16,663 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 12:49:16,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22353 states. [2023-12-02 12:49:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22353 to 22245. [2023-12-02 12:49:17,459 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 12:49:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22245 states to 22245 states and 30161 transitions. [2023-12-02 12:49:17,488 INFO L78 Accepts]: Start accepts. Automaton has 22245 states and 30161 transitions. Word has length 131 [2023-12-02 12:49:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:17,489 INFO L495 AbstractCegarLoop]: Abstraction has 22245 states and 30161 transitions. [2023-12-02 12:49:17,489 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 12:49:17,489 INFO L276 IsEmpty]: Start isEmpty. Operand 22245 states and 30161 transitions. [2023-12-02 12:49:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 12:49:17,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:17,500 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 12:49:17,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 12:49:17,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:17,700 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:17,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:17,701 INFO L85 PathProgramCache]: Analyzing trace with hash 389714817, now seen corresponding path program 1 times [2023-12-02 12:49:17,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:17,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953310704] [2023-12-02 12:49:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:17,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:17,863 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 12:49:17,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953310704] [2023-12-02 12:49:17,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953310704] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:49:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163142743] [2023-12-02 12:49:17,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:17,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:17,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:49:17,864 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:49:17,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 12:49:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:18,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:49:18,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:49:18,047 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 12:49:18,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:49:18,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163142743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:18,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:49:18,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 12:49:18,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735682028] [2023-12-02 12:49:18,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:18,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:49:18,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:18,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:49:18,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:49:18,049 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 12:49:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:19,145 INFO L93 Difference]: Finished difference Result 31141 states and 41958 transitions. [2023-12-02 12:49:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:49:19,146 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 12:49:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:19,173 INFO L225 Difference]: With dead ends: 31141 [2023-12-02 12:49:19,173 INFO L226 Difference]: Without dead ends: 21809 [2023-12-02 12:49:19,181 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 12:49:19,181 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:49:19,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 6376 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:49:19,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21809 states. [2023-12-02 12:49:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21809 to 21145. [2023-12-02 12:49:19,950 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 12:49:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21145 states to 21145 states and 28793 transitions. [2023-12-02 12:49:19,978 INFO L78 Accepts]: Start accepts. Automaton has 21145 states and 28793 transitions. Word has length 132 [2023-12-02 12:49:19,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:19,978 INFO L495 AbstractCegarLoop]: Abstraction has 21145 states and 28793 transitions. [2023-12-02 12:49:19,978 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 12:49:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 21145 states and 28793 transitions. [2023-12-02 12:49:19,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 12:49:19,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:19,989 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 12:49:19,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 12:49:20,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:20,189 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:20,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:20,190 INFO L85 PathProgramCache]: Analyzing trace with hash -764512780, now seen corresponding path program 1 times [2023-12-02 12:49:20,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:20,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406829780] [2023-12-02 12:49:20,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:20,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:20,382 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 12:49:20,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:20,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406829780] [2023-12-02 12:49:20,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406829780] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:49:20,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714037077] [2023-12-02 12:49:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:20,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:20,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:49:20,384 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:49:20,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 12:49:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:20,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:49:20,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:49:20,594 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 12:49:20,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:49:20,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714037077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:20,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:49:20,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-12-02 12:49:20,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693958447] [2023-12-02 12:49:20,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:20,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:49:20,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:20,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:49:20,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:49:20,596 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 12:49:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:22,319 INFO L93 Difference]: Finished difference Result 46661 states and 62204 transitions. [2023-12-02 12:49:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:49:22,320 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 12:49:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:22,356 INFO L225 Difference]: With dead ends: 46661 [2023-12-02 12:49:22,356 INFO L226 Difference]: Without dead ends: 27210 [2023-12-02 12:49:22,373 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 12:49:22,373 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 12:49:22,374 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 12:49:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27210 states. [2023-12-02 12:49:23,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27210 to 27206. [2023-12-02 12:49:23,558 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 12:49:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27206 states to 27206 states and 36245 transitions. [2023-12-02 12:49:23,594 INFO L78 Accepts]: Start accepts. Automaton has 27206 states and 36245 transitions. Word has length 133 [2023-12-02 12:49:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:23,595 INFO L495 AbstractCegarLoop]: Abstraction has 27206 states and 36245 transitions. [2023-12-02 12:49:23,595 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 12:49:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 27206 states and 36245 transitions. [2023-12-02 12:49:23,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 12:49:23,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:23,608 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 12:49:23,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 12:49:23,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 12:49:23,809 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:23,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:23,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1043826413, now seen corresponding path program 1 times [2023-12-02 12:49:23,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:23,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734148949] [2023-12-02 12:49:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:23,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:23,929 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 12:49:23,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:23,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734148949] [2023-12-02 12:49:23,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734148949] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:49:23,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671388523] [2023-12-02 12:49:23,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:23,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:23,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:49:23,930 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:49:23,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 12:49:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:24,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:49:24,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:49:24,122 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 12:49:24,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:49:24,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671388523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:24,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:49:24,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 12:49:24,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58928400] [2023-12-02 12:49:24,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:24,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:49:24,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:49:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:49:24,125 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 12:49:25,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:25,557 INFO L93 Difference]: Finished difference Result 45529 states and 60451 transitions. [2023-12-02 12:49:25,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:49:25,558 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 12:49:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:25,590 INFO L225 Difference]: With dead ends: 45529 [2023-12-02 12:49:25,590 INFO L226 Difference]: Without dead ends: 27234 [2023-12-02 12:49:25,601 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 12:49:25,602 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 12:49:25,602 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 12:49:25,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27234 states. [2023-12-02 12:49:26,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27234 to 26798. [2023-12-02 12:49:26,719 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 12:49:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26798 states to 26798 states and 35249 transitions. [2023-12-02 12:49:26,756 INFO L78 Accepts]: Start accepts. Automaton has 26798 states and 35249 transitions. Word has length 137 [2023-12-02 12:49:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:26,756 INFO L495 AbstractCegarLoop]: Abstraction has 26798 states and 35249 transitions. [2023-12-02 12:49:26,756 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 12:49:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 26798 states and 35249 transitions. [2023-12-02 12:49:26,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 12:49:26,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:26,769 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 12:49:26,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 12:49:26,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:26,969 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:26,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash 976044437, now seen corresponding path program 1 times [2023-12-02 12:49:26,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:26,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130671818] [2023-12-02 12:49:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:26,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:27,129 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 12:49:27,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130671818] [2023-12-02 12:49:27,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130671818] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:49:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997244435] [2023-12-02 12:49:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:27,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:27,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:49:27,131 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:49:27,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 12:49:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:27,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:49:27,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:49:27,318 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 12:49:27,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:49:27,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997244435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:27,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:49:27,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2023-12-02 12:49:27,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957913450] [2023-12-02 12:49:27,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:27,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:49:27,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:49:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:49:27,320 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 12:49:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:29,423 INFO L93 Difference]: Finished difference Result 59598 states and 76843 transitions. [2023-12-02 12:49:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:49:29,423 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 12:49:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:29,490 INFO L225 Difference]: With dead ends: 59598 [2023-12-02 12:49:29,490 INFO L226 Difference]: Without dead ends: 34494 [2023-12-02 12:49:29,515 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 12:49:29,515 INFO L413 NwaCegarLoop]: 3173 mSDtfsCounter, 3636 mSDsluCounter, 6331 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 12:49:29,516 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 12:49:29,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34494 states. [2023-12-02 12:49:31,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34494 to 34490. [2023-12-02 12:49:31,416 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 12:49:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34490 states to 34490 states and 44309 transitions. [2023-12-02 12:49:31,479 INFO L78 Accepts]: Start accepts. Automaton has 34490 states and 44309 transitions. Word has length 137 [2023-12-02 12:49:31,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:31,479 INFO L495 AbstractCegarLoop]: Abstraction has 34490 states and 44309 transitions. [2023-12-02 12:49:31,479 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 12:49:31,479 INFO L276 IsEmpty]: Start isEmpty. Operand 34490 states and 44309 transitions. [2023-12-02 12:49:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 12:49:31,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:31,502 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 12:49:31,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 12:49:31,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:31,703 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:31,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:31,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1399618401, now seen corresponding path program 1 times [2023-12-02 12:49:31,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:31,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960768912] [2023-12-02 12:49:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:31,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:31,888 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 12:49:31,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:31,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960768912] [2023-12-02 12:49:31,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960768912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:49:31,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715722914] [2023-12-02 12:49:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:31,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:31,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:49:31,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:49:31,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 12:49:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:32,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:49:32,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:49:32,110 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 12:49:32,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:49:32,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715722914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:32,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:49:32,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-12-02 12:49:32,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877315949] [2023-12-02 12:49:32,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:32,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:49:32,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:32,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:49:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:49:32,113 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 12:49:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:34,302 INFO L93 Difference]: Finished difference Result 58384 states and 74728 transitions. [2023-12-02 12:49:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:49:34,303 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 12:49:34,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:34,347 INFO L225 Difference]: With dead ends: 58384 [2023-12-02 12:49:34,347 INFO L226 Difference]: Without dead ends: 36366 [2023-12-02 12:49:34,362 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 12:49:34,362 INFO L413 NwaCegarLoop]: 3202 mSDtfsCounter, 3363 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 12:49:34,362 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 12:49:34,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36366 states. [2023-12-02 12:49:36,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36366 to 36212. [2023-12-02 12:49:36,220 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 12:49:36,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36212 states to 36212 states and 46233 transitions. [2023-12-02 12:49:36,267 INFO L78 Accepts]: Start accepts. Automaton has 36212 states and 46233 transitions. Word has length 141 [2023-12-02 12:49:36,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:36,267 INFO L495 AbstractCegarLoop]: Abstraction has 36212 states and 46233 transitions. [2023-12-02 12:49:36,267 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 12:49:36,267 INFO L276 IsEmpty]: Start isEmpty. Operand 36212 states and 46233 transitions. [2023-12-02 12:49:36,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 12:49:36,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:36,285 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, 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 12:49:36,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 12:49:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 12:49:36,485 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:36,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1770173793, now seen corresponding path program 1 times [2023-12-02 12:49:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184241481] [2023-12-02 12:49:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:36,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:36,659 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 12:49:36,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184241481] [2023-12-02 12:49:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184241481] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:49:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137027838] [2023-12-02 12:49:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:36,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:36,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:49:36,661 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:49:36,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 12:49:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:36,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 12:49:36,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:49:36,839 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 12:49:36,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:49:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137027838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:49:36,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 12:49:36,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041988148] [2023-12-02 12:49:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:36,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:49:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:49:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:49:36,841 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 12:49:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:39,514 INFO L93 Difference]: Finished difference Result 67257 states and 85415 transitions. [2023-12-02 12:49:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:49:39,515 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 12:49:39,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:39,573 INFO L225 Difference]: With dead ends: 67257 [2023-12-02 12:49:39,573 INFO L226 Difference]: Without dead ends: 43910 [2023-12-02 12:49:39,593 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 12:49:39,594 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:49:39,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 12700 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:49:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43910 states. [2023-12-02 12:49:41,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43910 to 38617. [2023-12-02 12:49:42,002 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 12:49:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38617 states to 38617 states and 49158 transitions. [2023-12-02 12:49:42,056 INFO L78 Accepts]: Start accepts. Automaton has 38617 states and 49158 transitions. Word has length 143 [2023-12-02 12:49:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:42,056 INFO L495 AbstractCegarLoop]: Abstraction has 38617 states and 49158 transitions. [2023-12-02 12:49:42,056 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 12:49:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 38617 states and 49158 transitions. [2023-12-02 12:49:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 12:49:42,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:42,073 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 12:49:42,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 12:49:42,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:42,273 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:42,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:42,274 INFO L85 PathProgramCache]: Analyzing trace with hash -790756105, now seen corresponding path program 1 times [2023-12-02 12:49:42,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:42,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690754548] [2023-12-02 12:49:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:42,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:42,468 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 12:49:42,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:42,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690754548] [2023-12-02 12:49:42,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690754548] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:49:42,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760939852] [2023-12-02 12:49:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:42,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:49:42,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:49:42,470 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:49:42,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 12:49:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:42,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 12:49:42,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:49:42,792 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 12:49:42,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:49:43,345 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 12:49:43,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760939852] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:49:43,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920800837] [2023-12-02 12:49:43,349 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2023-12-02 12:49:43,349 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:49:43,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:49:43,349 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:49:43,349 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:49:50,700 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 12:49:50,702 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 12:49:50,822 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 12:49:51,009 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 12:49:51,010 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 12:49:51,020 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 12:49:51,071 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 12:49:51,192 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:50:00,490 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 12:50:00,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:50:00,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:50:00,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2023-12-02 12:50:00,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238049887] [2023-12-02 12:50:00,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:50:00,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 12:50:00,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:50:00,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 12:50:00,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=5951, Unknown=0, NotChecked=0, Total=6480 [2023-12-02 12:50:00,495 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 12:50:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:50:13,081 INFO L93 Difference]: Finished difference Result 113478 states and 146935 transitions. [2023-12-02 12:50:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2023-12-02 12:50:13,081 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 12:50:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:50:13,202 INFO L225 Difference]: With dead ends: 113478 [2023-12-02 12:50:13,203 INFO L226 Difference]: Without dead ends: 80656 [2023-12-02 12:50:13,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 473 SyntacticMatches, 2 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37174 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=6635, Invalid=78337, Unknown=0, NotChecked=0, Total=84972 [2023-12-02 12:50:13,239 INFO L413 NwaCegarLoop]: 3990 mSDtfsCounter, 16386 mSDsluCounter, 20964 mSDsCounter, 0 mSdLazyCounter, 5131 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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 12:50:13,239 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 12:50:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80656 states. [2023-12-02 12:50:15,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80656 to 34313. [2023-12-02 12:50:15,797 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 12:50:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34313 states to 34313 states and 43690 transitions. [2023-12-02 12:50:15,842 INFO L78 Accepts]: Start accepts. Automaton has 34313 states and 43690 transitions. Word has length 140 [2023-12-02 12:50:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:50:15,843 INFO L495 AbstractCegarLoop]: Abstraction has 34313 states and 43690 transitions. [2023-12-02 12:50:15,843 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 12:50:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 34313 states and 43690 transitions. [2023-12-02 12:50:15,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 12:50:15,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:50:15,857 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 12:50:15,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 12:50:16,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:50:16,058 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:50:16,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:50:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2071111314, now seen corresponding path program 1 times [2023-12-02 12:50:16,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:50:16,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655342841] [2023-12-02 12:50:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:50:16,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:50:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:50:16,240 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 12:50:16,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:50:16,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655342841] [2023-12-02 12:50:16,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655342841] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:50:16,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936834219] [2023-12-02 12:50:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:50:16,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:50:16,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:50:16,242 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:50:16,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 12:50:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:50:16,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:50:16,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:50:16,592 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 12:50:16,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:50:17,136 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 12:50:17,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936834219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:50:17,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1056613983] [2023-12-02 12:50:17,139 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2023-12-02 12:50:17,139 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:50:17,140 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:50:17,140 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:50:17,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:50:25,656 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 12:50:25,658 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 12:50:25,778 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 12:50:25,964 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 12:50:25,965 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 12:50:25,975 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 12:50:26,121 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 12:50:26,221 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:50:38,216 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 12:50:38,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:50:38,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:50:38,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 18 [2023-12-02 12:50:38,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761452859] [2023-12-02 12:50:38,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:50:38,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 12:50:38,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:50:38,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 12:50:38,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=6616, Unknown=0, NotChecked=0, Total=7140 [2023-12-02 12:50:38,219 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 12:50:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:50:51,272 INFO L93 Difference]: Finished difference Result 92417 states and 119369 transitions. [2023-12-02 12:50:51,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-12-02 12:50:51,272 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 12:50:51,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:50:51,374 INFO L225 Difference]: With dead ends: 92417 [2023-12-02 12:50:51,375 INFO L226 Difference]: Without dead ends: 67283 [2023-12-02 12:50:51,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30612 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=4918, Invalid=66104, Unknown=0, NotChecked=0, Total=71022 [2023-12-02 12:50:51,402 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 19122 mSDsluCounter, 23146 mSDsCounter, 0 mSdLazyCounter, 4678 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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 12:50:51,403 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 12:50:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67283 states. [2023-12-02 12:50:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67283 to 29676. [2023-12-02 12:50:53,968 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 12:50:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29676 states to 29676 states and 37970 transitions. [2023-12-02 12:50:54,008 INFO L78 Accepts]: Start accepts. Automaton has 29676 states and 37970 transitions. Word has length 142 [2023-12-02 12:50:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:50:54,008 INFO L495 AbstractCegarLoop]: Abstraction has 29676 states and 37970 transitions. [2023-12-02 12:50:54,008 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 12:50:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 29676 states and 37970 transitions. [2023-12-02 12:50:54,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 12:50:54,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:50:54,019 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 12:50:54,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 12:50:54,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:50:54,220 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:50:54,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:50:54,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1244067081, now seen corresponding path program 1 times [2023-12-02 12:50:54,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:50:54,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120032989] [2023-12-02 12:50:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:50:54,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:50:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:50:54,341 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 12:50:54,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:50:54,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120032989] [2023-12-02 12:50:54,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120032989] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:50:54,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179085168] [2023-12-02 12:50:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:50:54,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:50:54,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:50:54,343 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:50:54,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 12:50:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:50:54,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:50:54,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:50:54,494 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 12:50:54,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:50:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179085168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:50:54,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:50:54,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-02 12:50:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722702874] [2023-12-02 12:50:54,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:50:54,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:50:54,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:50:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:50:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:50:54,495 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 12:50:57,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:50:57,183 INFO L93 Difference]: Finished difference Result 59325 states and 75110 transitions. [2023-12-02 12:50:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:50:57,183 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 12:50:57,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:50:57,233 INFO L225 Difference]: With dead ends: 59325 [2023-12-02 12:50:57,234 INFO L226 Difference]: Without dead ends: 34202 [2023-12-02 12:50:57,258 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 12:50:57,258 INFO L413 NwaCegarLoop]: 3253 mSDtfsCounter, 3396 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 12:50:57,258 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 12:50:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34202 states. [2023-12-02 12:50:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34202 to 32744. [2023-12-02 12:50:59,829 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 12:50:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32744 states to 32744 states and 41988 transitions. [2023-12-02 12:50:59,882 INFO L78 Accepts]: Start accepts. Automaton has 32744 states and 41988 transitions. Word has length 141 [2023-12-02 12:50:59,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:50:59,882 INFO L495 AbstractCegarLoop]: Abstraction has 32744 states and 41988 transitions. [2023-12-02 12:50:59,882 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 12:50:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 32744 states and 41988 transitions. [2023-12-02 12:50:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 12:50:59,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:50:59,895 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 12:50:59,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 12:51:00,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:51:00,095 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:00,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:00,096 INFO L85 PathProgramCache]: Analyzing trace with hash 849321035, now seen corresponding path program 1 times [2023-12-02 12:51:00,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:00,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659757347] [2023-12-02 12:51:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:00,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:00,137 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 12:51:00,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:00,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659757347] [2023-12-02 12:51:00,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659757347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:51:00,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430231644] [2023-12-02 12:51:00,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:00,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:51:00,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:00,138 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:51:00,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 12:51:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:00,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:51:00,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:51:00,294 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 12:51:00,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:51:00,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430231644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:00,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:51:00,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 12:51:00,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783263088] [2023-12-02 12:51:00,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:00,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:51:00,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:51:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:51:00,296 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 12:51:02,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:02,697 INFO L93 Difference]: Finished difference Result 59563 states and 76570 transitions. [2023-12-02 12:51:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:51:02,698 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 12:51:02,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:02,756 INFO L225 Difference]: With dead ends: 59563 [2023-12-02 12:51:02,756 INFO L226 Difference]: Without dead ends: 31366 [2023-12-02 12:51:02,783 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 12:51:02,784 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 12:51:02,784 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 12:51:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31366 states. [2023-12-02 12:51:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31366 to 30906. [2023-12-02 12:51:05,042 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 12:51:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30906 states to 30906 states and 38961 transitions. [2023-12-02 12:51:05,084 INFO L78 Accepts]: Start accepts. Automaton has 30906 states and 38961 transitions. Word has length 141 [2023-12-02 12:51:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:05,084 INFO L495 AbstractCegarLoop]: Abstraction has 30906 states and 38961 transitions. [2023-12-02 12:51:05,085 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 12:51:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 30906 states and 38961 transitions. [2023-12-02 12:51:05,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 12:51:05,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:05,095 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 12:51:05,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 12:51:05,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:51:05,296 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:05,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:05,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1648548344, now seen corresponding path program 1 times [2023-12-02 12:51:05,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:05,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195455250] [2023-12-02 12:51:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:05,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:05,413 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 12:51:05,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:05,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195455250] [2023-12-02 12:51:05,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195455250] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:51:05,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509174144] [2023-12-02 12:51:05,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:05,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:51:05,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:05,415 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:51:05,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 12:51:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:05,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:51:05,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:51:05,621 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 12:51:05,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:51:05,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509174144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:05,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:51:05,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-12-02 12:51:05,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376499303] [2023-12-02 12:51:05,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:05,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:51:05,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:05,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:51:05,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:51:05,623 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 12:51:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:08,138 INFO L93 Difference]: Finished difference Result 56197 states and 70930 transitions. [2023-12-02 12:51:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:51:08,139 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 12:51:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:08,183 INFO L225 Difference]: With dead ends: 56197 [2023-12-02 12:51:08,183 INFO L226 Difference]: Without dead ends: 32291 [2023-12-02 12:51:08,206 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 12:51:08,206 INFO L413 NwaCegarLoop]: 3202 mSDtfsCounter, 3368 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 12:51:08,206 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 12:51:08,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32291 states. [2023-12-02 12:51:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32291 to 32045. [2023-12-02 12:51:10,439 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 12:51:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32045 states to 32045 states and 40077 transitions. [2023-12-02 12:51:10,483 INFO L78 Accepts]: Start accepts. Automaton has 32045 states and 40077 transitions. Word has length 141 [2023-12-02 12:51:10,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:10,483 INFO L495 AbstractCegarLoop]: Abstraction has 32045 states and 40077 transitions. [2023-12-02 12:51:10,483 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 12:51:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand 32045 states and 40077 transitions. [2023-12-02 12:51:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 12:51:10,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:10,496 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 12:51:10,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 12:51:10,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 12:51:10,696 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:10,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:10,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1483078397, now seen corresponding path program 1 times [2023-12-02 12:51:10,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:10,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367064636] [2023-12-02 12:51:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:10,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:10,737 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 12:51:10,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:10,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367064636] [2023-12-02 12:51:10,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367064636] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:51:10,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687505526] [2023-12-02 12:51:10,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:10,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:51:10,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:10,739 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:51:10,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 12:51:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:10,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:51:10,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:51:10,891 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 12:51:10,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:51:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687505526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:10,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:51:10,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 12:51:10,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792191085] [2023-12-02 12:51:10,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:10,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:51:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:10,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:51:10,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:51:10,893 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 12:51:13,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:13,364 INFO L93 Difference]: Finished difference Result 55818 states and 70216 transitions. [2023-12-02 12:51:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:51:13,365 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 12:51:13,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:13,409 INFO L225 Difference]: With dead ends: 55818 [2023-12-02 12:51:13,409 INFO L226 Difference]: Without dead ends: 30823 [2023-12-02 12:51:13,433 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 12:51:13,434 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 12:51:13,434 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 12:51:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30823 states. [2023-12-02 12:51:15,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30823 to 30435. [2023-12-02 12:51:15,592 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 12:51:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30435 states to 30435 states and 37379 transitions. [2023-12-02 12:51:15,633 INFO L78 Accepts]: Start accepts. Automaton has 30435 states and 37379 transitions. Word has length 138 [2023-12-02 12:51:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:15,633 INFO L495 AbstractCegarLoop]: Abstraction has 30435 states and 37379 transitions. [2023-12-02 12:51:15,633 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 12:51:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand 30435 states and 37379 transitions. [2023-12-02 12:51:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 12:51:15,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:15,644 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 12:51:15,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-02 12:51:15,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 12:51:15,845 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:15,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1163713486, now seen corresponding path program 1 times [2023-12-02 12:51:15,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:15,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042344217] [2023-12-02 12:51:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:15,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:16,272 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 12:51:16,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:16,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042344217] [2023-12-02 12:51:16,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042344217] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:51:16,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183502004] [2023-12-02 12:51:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:16,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:51:16,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:16,274 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:51:16,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 12:51:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:16,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:51:16,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:51:16,587 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 12:51:16,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:51:16,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183502004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:16,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:51:16,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-02 12:51:16,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353819856] [2023-12-02 12:51:16,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:16,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:51:16,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:51:16,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-02 12:51:16,589 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 12:51:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:19,195 INFO L93 Difference]: Finished difference Result 53770 states and 65503 transitions. [2023-12-02 12:51:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 12:51:19,196 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 12:51:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:19,234 INFO L225 Difference]: With dead ends: 53770 [2023-12-02 12:51:19,234 INFO L226 Difference]: Without dead ends: 28157 [2023-12-02 12:51:19,254 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 12:51:19,255 INFO L413 NwaCegarLoop]: 3137 mSDtfsCounter, 3489 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:19,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3499 Valid, 6252 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:51:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28157 states. [2023-12-02 12:51:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28157 to 26394. [2023-12-02 12:51:21,518 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 12:51:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26394 states to 26394 states and 32033 transitions. [2023-12-02 12:51:21,564 INFO L78 Accepts]: Start accepts. Automaton has 26394 states and 32033 transitions. Word has length 138 [2023-12-02 12:51:21,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:21,564 INFO L495 AbstractCegarLoop]: Abstraction has 26394 states and 32033 transitions. [2023-12-02 12:51:21,564 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 12:51:21,565 INFO L276 IsEmpty]: Start isEmpty. Operand 26394 states and 32033 transitions. [2023-12-02 12:51:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 12:51:21,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:21,576 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 12:51:21,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 12:51:21,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 12:51:21,777 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:21,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:21,777 INFO L85 PathProgramCache]: Analyzing trace with hash 547331552, now seen corresponding path program 1 times [2023-12-02 12:51:21,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:21,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476511781] [2023-12-02 12:51:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:21,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:21,910 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 12:51:21,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:21,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476511781] [2023-12-02 12:51:21,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476511781] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:51:21,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122094759] [2023-12-02 12:51:21,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:21,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:51:21,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:21,912 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:51:21,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 12:51:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:22,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:51:22,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:51:22,174 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 12:51:22,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:51:22,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122094759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:22,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:51:22,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-12-02 12:51:22,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764581011] [2023-12-02 12:51:22,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:22,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:51:22,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:22,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:51:22,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:51:22,177 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 12:51:25,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:25,330 INFO L93 Difference]: Finished difference Result 52668 states and 63348 transitions. [2023-12-02 12:51:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:51:25,330 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 12:51:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:25,375 INFO L225 Difference]: With dead ends: 52668 [2023-12-02 12:51:25,375 INFO L226 Difference]: Without dead ends: 36191 [2023-12-02 12:51:25,391 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 12:51:25,392 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 12:51:25,392 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 12:51:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36191 states. [2023-12-02 12:51:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36191 to 34254. [2023-12-02 12:51:28,053 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 12:51:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34254 states to 34254 states and 40912 transitions. [2023-12-02 12:51:28,097 INFO L78 Accepts]: Start accepts. Automaton has 34254 states and 40912 transitions. Word has length 139 [2023-12-02 12:51:28,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:28,097 INFO L495 AbstractCegarLoop]: Abstraction has 34254 states and 40912 transitions. [2023-12-02 12:51:28,097 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 12:51:28,097 INFO L276 IsEmpty]: Start isEmpty. Operand 34254 states and 40912 transitions. [2023-12-02 12:51:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 12:51:28,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:28,106 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 12:51:28,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-02 12:51:28,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:51:28,306 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:28,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash -301511224, now seen corresponding path program 1 times [2023-12-02 12:51:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:28,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549572444] [2023-12-02 12:51:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:28,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:28,436 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 12:51:28,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:28,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549572444] [2023-12-02 12:51:28,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549572444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:28,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:28,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:51:28,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371116724] [2023-12-02 12:51:28,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:28,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:51:28,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:28,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:51:28,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:51:28,438 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 12:51:32,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:32,013 INFO L93 Difference]: Finished difference Result 61212 states and 71803 transitions. [2023-12-02 12:51:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 12:51:32,014 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 12:51:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:32,063 INFO L225 Difference]: With dead ends: 61212 [2023-12-02 12:51:32,063 INFO L226 Difference]: Without dead ends: 36716 [2023-12-02 12:51:32,087 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 12:51:32,088 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:32,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 9616 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:51:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36716 states. [2023-12-02 12:51:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36716 to 33936. [2023-12-02 12:51:34,932 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 12:51:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33936 states to 33936 states and 40144 transitions. [2023-12-02 12:51:34,974 INFO L78 Accepts]: Start accepts. Automaton has 33936 states and 40144 transitions. Word has length 140 [2023-12-02 12:51:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:34,974 INFO L495 AbstractCegarLoop]: Abstraction has 33936 states and 40144 transitions. [2023-12-02 12:51:34,974 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 12:51:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 33936 states and 40144 transitions. [2023-12-02 12:51:34,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-02 12:51:34,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:34,983 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 12:51:34,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-02 12:51:34,983 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:34,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1254898630, now seen corresponding path program 1 times [2023-12-02 12:51:34,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:34,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676296283] [2023-12-02 12:51:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:34,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:35,184 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 12:51:35,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:35,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676296283] [2023-12-02 12:51:35,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676296283] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:51:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427811406] [2023-12-02 12:51:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:51:35,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:35,186 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:51:35,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 12:51:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:35,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 12:51:35,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:51:35,513 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 12:51:35,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:51:36,070 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 12:51:36,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427811406] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:51:36,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1922957204] [2023-12-02 12:51:36,073 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2023-12-02 12:51:36,074 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:51:36,074 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:51:36,074 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:51:36,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:51:44,730 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 12:51:44,731 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 12:51:44,853 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 12:51:45,041 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 12:51:45,042 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 12:51:45,050 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 12:51:45,097 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 12:51:45,211 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:51:55,931 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 12:51:55,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:51:55,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:51:55,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 6] total 19 [2023-12-02 12:51:55,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409948480] [2023-12-02 12:51:55,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:51:55,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 12:51:55,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:55,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 12:51:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=7285, Unknown=0, NotChecked=0, Total=7832 [2023-12-02 12:51:55,934 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 12:52:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:52:07,447 INFO L93 Difference]: Finished difference Result 64342 states and 77388 transitions. [2023-12-02 12:52:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2023-12-02 12:52:07,448 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 12:52:07,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:52:07,508 INFO L225 Difference]: With dead ends: 64342 [2023-12-02 12:52:07,508 INFO L226 Difference]: Without dead ends: 44121 [2023-12-02 12:52:07,532 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 12:52:07,532 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 12:52:07,533 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 12:52:07,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44121 states. [2023-12-02 12:52:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44121 to 28361. [2023-12-02 12:52:10,176 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 12:52:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28361 states to 28361 states and 33732 transitions. [2023-12-02 12:52:10,209 INFO L78 Accepts]: Start accepts. Automaton has 28361 states and 33732 transitions. Word has length 145 [2023-12-02 12:52:10,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:52:10,210 INFO L495 AbstractCegarLoop]: Abstraction has 28361 states and 33732 transitions. [2023-12-02 12:52:10,210 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 12:52:10,210 INFO L276 IsEmpty]: Start isEmpty. Operand 28361 states and 33732 transitions. [2023-12-02 12:52:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-02 12:52:10,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:52:10,217 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 12:52:10,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 12:52:10,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:52:10,418 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:52:10,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:52:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1548132413, now seen corresponding path program 1 times [2023-12-02 12:52:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:52:10,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379604305] [2023-12-02 12:52:10,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:52:10,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:52:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:52:10,999 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 12:52:10,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:52:10,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379604305] [2023-12-02 12:52:10,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379604305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:52:10,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503489317] [2023-12-02 12:52:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:52:10,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:52:11,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:52:11,000 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:52:11,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 12:52:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:52:11,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 12:52:11,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:52:11,421 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 12:52:11,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:52:11,955 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 12:52:11,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503489317] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:52:11,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1693294671] [2023-12-02 12:52:11,957 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2023-12-02 12:52:11,958 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:52:11,958 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:52:11,958 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:52:11,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:52:39,171 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 12:52:39,172 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 1 for LOIs [2023-12-02 12:52:39,177 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 1 for LOIs [2023-12-02 12:52:39,183 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 12:52:39,184 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 12:52:39,193 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 12:52:39,376 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2023-12-02 12:52:39,497 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:53:00,854 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 12:53:00,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:53:00,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:53:00,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 36 [2023-12-02 12:53:00,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268214058] [2023-12-02 12:53:00,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:53:00,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 12:53:00,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 12:53:00,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=644, Invalid=11128, Unknown=0, NotChecked=0, Total=11772 [2023-12-02 12:53:00,858 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 12:53:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:14,906 INFO L93 Difference]: Finished difference Result 86084 states and 100662 transitions. [2023-12-02 12:53:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-02 12:53:14,906 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 12:53:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:15,000 INFO L225 Difference]: With dead ends: 86084 [2023-12-02 12:53:15,000 INFO L226 Difference]: Without dead ends: 70818 [2023-12-02 12:53:15,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12876 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=3163, Invalid=32747, Unknown=0, NotChecked=0, Total=35910 [2023-12-02 12:53:15,018 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, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:15,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26468 Valid, 38094 Invalid, 7190 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1868 Valid, 5322 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 12:53:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70818 states. [2023-12-02 12:53:17,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70818 to 26241. [2023-12-02 12:53:17,934 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 12:53:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26241 states to 26241 states and 31231 transitions. [2023-12-02 12:53:17,966 INFO L78 Accepts]: Start accepts. Automaton has 26241 states and 31231 transitions. Word has length 147 [2023-12-02 12:53:17,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:17,966 INFO L495 AbstractCegarLoop]: Abstraction has 26241 states and 31231 transitions. [2023-12-02 12:53:17,966 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 12:53:17,966 INFO L276 IsEmpty]: Start isEmpty. Operand 26241 states and 31231 transitions. [2023-12-02 12:53:17,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-02 12:53:17,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:17,972 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 12:53:17,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 12:53:18,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:53:18,173 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:18,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:18,173 INFO L85 PathProgramCache]: Analyzing trace with hash 934353077, now seen corresponding path program 1 times [2023-12-02 12:53:18,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:18,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556773038] [2023-12-02 12:53:18,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:18,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:18,675 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 12:53:18,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:18,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556773038] [2023-12-02 12:53:18,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556773038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:53:18,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509904610] [2023-12-02 12:53:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:18,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:53:18,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:53:18,676 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:53:18,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 12:53:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:18,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 12:53:18,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:53:19,061 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 12:53:19,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:53:19,649 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 12:53:19,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509904610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:53:19,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [844726532] [2023-12-02 12:53:19,652 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2023-12-02 12:53:19,652 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:53:19,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:53:19,652 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:53:19,652 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:53:43,056 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 12:53:43,058 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 1 for LOIs [2023-12-02 12:53:43,063 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 1 for LOIs [2023-12-02 12:53:43,069 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 12:53:43,070 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 12:53:43,080 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 12:53:43,218 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2023-12-02 12:53:43,328 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:54:01,219 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 12:54:01,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:54:01,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:54:01,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 33 [2023-12-02 12:54:01,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230918505] [2023-12-02 12:54:01,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:54:01,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 12:54:01,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:54:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 12:54:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=10514, Unknown=0, NotChecked=0, Total=11130 [2023-12-02 12:54:01,222 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 12:54:14,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:54:14,635 INFO L93 Difference]: Finished difference Result 74347 states and 87595 transitions. [2023-12-02 12:54:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-02 12:54:14,635 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 12:54:14,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:54:14,725 INFO L225 Difference]: With dead ends: 74347 [2023-12-02 12:54:14,725 INFO L226 Difference]: Without dead ends: 58381 [2023-12-02 12:54:14,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11952 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=2681, Invalid=29899, Unknown=0, NotChecked=0, Total=32580 [2023-12-02 12:54:14,744 INFO L413 NwaCegarLoop]: 3178 mSDtfsCounter, 26176 mSDsluCounter, 29482 mSDsCounter, 0 mSdLazyCounter, 5804 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26183 SdHoareTripleChecker+Valid, 32660 SdHoareTripleChecker+Invalid, 6862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 5804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:54:14,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26183 Valid, 32660 Invalid, 6862 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1058 Valid, 5804 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 12:54:14,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58381 states. [2023-12-02 12:54:17,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58381 to 25543. [2023-12-02 12:54:17,926 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 12:54:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25543 states to 25543 states and 30469 transitions. [2023-12-02 12:54:17,958 INFO L78 Accepts]: Start accepts. Automaton has 25543 states and 30469 transitions. Word has length 149 [2023-12-02 12:54:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:54:17,958 INFO L495 AbstractCegarLoop]: Abstraction has 25543 states and 30469 transitions. [2023-12-02 12:54:17,958 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 12:54:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 25543 states and 30469 transitions. [2023-12-02 12:54:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-02 12:54:17,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:54:17,967 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 12:54:17,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 12:54:18,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 12:54:18,167 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:54:18,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:54:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1816296732, now seen corresponding path program 1 times [2023-12-02 12:54:18,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:54:18,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952718621] [2023-12-02 12:54:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:54:18,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:54:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:54:18,337 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 12:54:18,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:54:18,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952718621] [2023-12-02 12:54:18,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952718621] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:54:18,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71240589] [2023-12-02 12:54:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:54:18,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:54:18,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:54:18,338 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:54:18,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 12:54:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:54:18,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 12:54:18,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:54:18,549 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 12:54:18,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:54:18,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71240589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:54:18,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:54:18,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 12:54:18,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977331660] [2023-12-02 12:54:18,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:54:18,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:54:18,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:54:18,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:54:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:54:18,551 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 12:54:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:54:21,520 INFO L93 Difference]: Finished difference Result 40911 states and 47917 transitions. [2023-12-02 12:54:21,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:54:21,521 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 12:54:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:54:21,545 INFO L225 Difference]: With dead ends: 40911 [2023-12-02 12:54:21,545 INFO L226 Difference]: Without dead ends: 19447 [2023-12-02 12:54:21,559 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 12:54:21,559 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 12:54:21,560 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 12:54:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19447 states. [2023-12-02 12:54:23,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19447 to 17076. [2023-12-02 12:54:23,575 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 12:54:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17076 states to 17076 states and 20391 transitions. [2023-12-02 12:54:23,596 INFO L78 Accepts]: Start accepts. Automaton has 17076 states and 20391 transitions. Word has length 171 [2023-12-02 12:54:23,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:54:23,596 INFO L495 AbstractCegarLoop]: Abstraction has 17076 states and 20391 transitions. [2023-12-02 12:54:23,596 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 12:54:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 17076 states and 20391 transitions. [2023-12-02 12:54:23,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-02 12:54:23,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:54:23,602 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 12:54:23,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 12:54:23,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:54:23,803 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:54:23,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:54:23,803 INFO L85 PathProgramCache]: Analyzing trace with hash -764944154, now seen corresponding path program 1 times [2023-12-02 12:54:23,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:54:23,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252051313] [2023-12-02 12:54:23,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:54:23,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:54:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:54:24,025 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 12:54:24,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:54:24,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252051313] [2023-12-02 12:54:24,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252051313] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:54:24,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742906364] [2023-12-02 12:54:24,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:54:24,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:54:24,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:54:24,027 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:54:24,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 12:54:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:54:24,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 12:54:24,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:54:24,241 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 12:54:24,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:54:24,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742906364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:54:24,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:54:24,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 12:54:24,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890323022] [2023-12-02 12:54:24,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:54:24,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:54:24,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:54:24,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:54:24,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:54:24,242 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 12:54:27,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:54:27,066 INFO L93 Difference]: Finished difference Result 30901 states and 35741 transitions. [2023-12-02 12:54:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:54:27,067 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 12:54:27,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:54:27,086 INFO L225 Difference]: With dead ends: 30901 [2023-12-02 12:54:27,086 INFO L226 Difference]: Without dead ends: 17268 [2023-12-02 12:54:27,094 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 12:54:27,095 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 12:54:27,095 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 12:54:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17268 states. [2023-12-02 12:54:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17268 to 16028. [2023-12-02 12:54:29,166 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 12:54:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16028 states to 16028 states and 19113 transitions. [2023-12-02 12:54:29,191 INFO L78 Accepts]: Start accepts. Automaton has 16028 states and 19113 transitions. Word has length 204 [2023-12-02 12:54:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:54:29,191 INFO L495 AbstractCegarLoop]: Abstraction has 16028 states and 19113 transitions. [2023-12-02 12:54:29,191 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 12:54:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 16028 states and 19113 transitions. [2023-12-02 12:54:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-02 12:54:29,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:54:29,196 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 12:54:29,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 12:54:29,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 12:54:29,397 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:54:29,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:54:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1125694254, now seen corresponding path program 1 times [2023-12-02 12:54:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:54:29,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914422034] [2023-12-02 12:54:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:54:29,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:54:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:54:29,582 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 12:54:29,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:54:29,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914422034] [2023-12-02 12:54:29,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914422034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:54:29,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:54:29,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 12:54:29,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476178265] [2023-12-02 12:54:29,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:54:29,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:54:29,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:54:29,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:54:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:54:29,585 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 12:54:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:54:36,158 INFO L93 Difference]: Finished difference Result 43585 states and 49664 transitions. [2023-12-02 12:54:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 12:54:36,159 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 12:54:36,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:54:36,214 INFO L225 Difference]: With dead ends: 43585 [2023-12-02 12:54:36,214 INFO L226 Difference]: Without dead ends: 36562 [2023-12-02 12:54:36,228 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 12:54:36,228 INFO L413 NwaCegarLoop]: 3569 mSDtfsCounter, 3825 mSDsluCounter, 13736 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 17305 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:54:36,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3825 Valid, 17305 Invalid, 2190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 12:54:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36562 states. [2023-12-02 12:54:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36562 to 28849. [2023-12-02 12:54:40,381 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 12:54:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28849 states to 28849 states and 33332 transitions. [2023-12-02 12:54:40,417 INFO L78 Accepts]: Start accepts. Automaton has 28849 states and 33332 transitions. Word has length 238 [2023-12-02 12:54:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:54:40,418 INFO L495 AbstractCegarLoop]: Abstraction has 28849 states and 33332 transitions. [2023-12-02 12:54:40,418 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 12:54:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 28849 states and 33332 transitions. [2023-12-02 12:54:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-02 12:54:40,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:54:40,424 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 12:54:40,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-02 12:54:40,424 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:54:40,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:54:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash 901468007, now seen corresponding path program 1 times [2023-12-02 12:54:40,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:54:40,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792324943] [2023-12-02 12:54:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:54:40,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:54:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:54:40,449 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:54:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:54:40,625 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 12:54:40,625 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:54:40,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 12:54:40,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 12:54:40,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-02 12:54:40,631 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 12:54:40,636 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:54:40,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 12:54:40,754 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 12:54:40,774 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 12:54:40,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:54:40 BoogieIcfgContainer [2023-12-02 12:54:40,818 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:54:40,818 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:54:40,818 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:54:40,818 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:54:40,818 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:04" (3/4) ... [2023-12-02 12:54:40,819 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 12:54:40,862 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 12:54:40,863 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 12:54:40,877 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 12:54:40,987 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 12:54:40,987 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:54:40,988 INFO L158 Benchmark]: Toolchain (without parser) took 410379.95ms. Allocated memory was 155.2MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 78.9MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-12-02 12:54:40,988 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:54:40,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3526.59ms. Allocated memory was 155.2MB in the beginning and 228.6MB in the end (delta: 73.4MB). Free memory was 78.9MB in the beginning and 101.9MB in the end (delta: -23.1MB). Peak memory consumption was 93.8MB. Max. memory is 16.1GB. [2023-12-02 12:54:40,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 356.30ms. Allocated memory is still 228.6MB. Free memory was 101.9MB in the beginning and 69.9MB in the end (delta: 32.0MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2023-12-02 12:54:40,989 INFO L158 Benchmark]: Boogie Preprocessor took 426.92ms. Allocated memory was 228.6MB in the beginning and 289.4MB in the end (delta: 60.8MB). Free memory was 69.9MB in the beginning and 121.1MB in the end (delta: -51.2MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. [2023-12-02 12:54:40,989 INFO L158 Benchmark]: RCFGBuilder took 9582.46ms. Allocated memory was 289.4MB in the beginning and 943.7MB in the end (delta: 654.3MB). Free memory was 121.1MB in the beginning and 630.7MB in the end (delta: -509.6MB). Peak memory consumption was 390.1MB. Max. memory is 16.1GB. [2023-12-02 12:54:40,989 INFO L158 Benchmark]: TraceAbstraction took 396311.18ms. Allocated memory was 943.7MB in the beginning and 3.7GB in the end (delta: 2.7GB). Free memory was 630.7MB in the beginning and 1.5GB in the end (delta: -883.1MB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2023-12-02 12:54:40,990 INFO L158 Benchmark]: Witness Printer took 169.19ms. Allocated memory is still 3.7GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-12-02 12:54:40,991 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3526.59ms. Allocated memory was 155.2MB in the beginning and 228.6MB in the end (delta: 73.4MB). Free memory was 78.9MB in the beginning and 101.9MB in the end (delta: -23.1MB). Peak memory consumption was 93.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 356.30ms. Allocated memory is still 228.6MB. Free memory was 101.9MB in the beginning and 69.9MB in the end (delta: 32.0MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 426.92ms. Allocated memory was 228.6MB in the beginning and 289.4MB in the end (delta: 60.8MB). Free memory was 69.9MB in the beginning and 121.1MB in the end (delta: -51.2MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. * RCFGBuilder took 9582.46ms. Allocated memory was 289.4MB in the beginning and 943.7MB in the end (delta: 654.3MB). Free memory was 121.1MB in the beginning and 630.7MB in the end (delta: -509.6MB). Peak memory consumption was 390.1MB. Max. memory is 16.1GB. * TraceAbstraction took 396311.18ms. Allocated memory was 943.7MB in the beginning and 3.7GB in the end (delta: 2.7GB). Free memory was 630.7MB in the beginning and 1.5GB in the end (delta: -883.1MB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Witness Printer took 169.19ms. Allocated memory is still 3.7GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 41.3MB). 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: 11094]: 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: 396.1s, OverallIterations: 38, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.4s, AutomataDifference: 125.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 176298 SdHoareTripleChecker+Valid, 30.8s 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, 49077 IncrementalHoareTripleChecker+Invalid, 54579 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5502 mSolverCounterUnsat, 121963 mSDtfsCounter, 49077 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7741 GetRequests, 6118 SyntacticMatches, 8 SemanticMatches, 1615 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144985 ImplicationChecksByTransitivity, 108.1s 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: 54.0s AutomataMinimizationTime, 37 MinimizatonAttempts, 217480 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 12.7s 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 12:54:41,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c488ea-0185-434f-8676-2a5cbd76b3d7/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