./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/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_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/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_4bc4217a-e5b8-459b-a605-65dbae95c888/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 bd466f23ab481babcc03c4173983e1af9100c535496f2e2f8c8fc18a8aaf4174 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:32:54,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:32:54,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:32:54,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:32:54,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:32:54,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:32:54,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:32:54,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:32:54,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:32:54,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:32:54,749 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:32:54,749 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:32:54,750 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:32:54,750 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:32:54,751 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:32:54,751 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:32:54,752 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:32:54,752 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:32:54,753 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:32:54,753 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:32:54,754 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:32:54,756 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:32:54,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:32:54,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:32:54,758 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:32:54,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:32:54,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:32:54,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:32:54,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:32:54,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:32:54,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:32:54,760 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:32:54,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:32:54,760 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:32:54,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:32:54,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:32:54,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:32:54,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:32:54,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:32:54,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:32:54,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:32:54,762 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:32:54,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:32:54,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:32:54,763 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:32:54,763 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:32:54,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:32:54,763 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_4bc4217a-e5b8-459b-a605-65dbae95c888/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd466f23ab481babcc03c4173983e1af9100c535496f2e2f8c8fc18a8aaf4174 [2023-12-02 15:32:54,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:32:54,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:32:54,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:32:54,998 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:32:54,999 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:32:55,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2023-12-02 15:32:57,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:32:58,015 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:32:58,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2023-12-02 15:32:58,030 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/data/021f93b58/13e4bfcb69a74931b9bf403b4ef8059b/FLAGdad5bcad4 [2023-12-02 15:32:58,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/data/021f93b58/13e4bfcb69a74931b9bf403b4ef8059b [2023-12-02 15:32:58,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:32:58,046 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:32:58,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:32:58,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:32:58,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:32:58,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84d69f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58, skipping insertion in model container [2023-12-02 15:32:58,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,110 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:32:58,266 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_4bc4217a-e5b8-459b-a605-65dbae95c888/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[911,924] [2023-12-02 15:32:58,327 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_4bc4217a-e5b8-459b-a605-65dbae95c888/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[8416,8429] [2023-12-02 15:32:58,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:32:58,392 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:32:58,405 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_4bc4217a-e5b8-459b-a605-65dbae95c888/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[911,924] [2023-12-02 15:32:58,428 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_4bc4217a-e5b8-459b-a605-65dbae95c888/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[8416,8429] [2023-12-02 15:32:58,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:32:58,482 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:32:58,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58 WrapperNode [2023-12-02 15:32:58,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:32:58,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:32:58,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:32:58,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:32:58,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,545 INFO L138 Inliner]: procedures = 63, calls = 74, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 634 [2023-12-02 15:32:58,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:32:58,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:32:58,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:32:58,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:32:58,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:32:58,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:32:58,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:32:58,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:32:58,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (1/1) ... [2023-12-02 15:32:58,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:32:58,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:32:58,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:32:58,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:32:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:32:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-02 15:32:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-02 15:32:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-02 15:32:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-02 15:32:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-02 15:32:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-02 15:32:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-02 15:32:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-02 15:32:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-02 15:32:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-02 15:32:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-02 15:32:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-02 15:32:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-02 15:32:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-02 15:32:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-02 15:32:58,685 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-02 15:32:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-02 15:32:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-02 15:32:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-02 15:32:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-02 15:32:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-02 15:32:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-02 15:32:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:32:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-02 15:32:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-02 15:32:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-02 15:32:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-02 15:32:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:32:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:32:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-02 15:32:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-02 15:32:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-02 15:32:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-02 15:32:58,817 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:32:58,819 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:32:59,315 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-02 15:32:59,315 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-12-02 15:32:59,373 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:32:59,601 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:32:59,601 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-02 15:32:59,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:59 BoogieIcfgContainer [2023-12-02 15:32:59,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:32:59,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:32:59,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:32:59,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:32:59,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:32:58" (1/3) ... [2023-12-02 15:32:59,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2248b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:59, skipping insertion in model container [2023-12-02 15:32:59,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:58" (2/3) ... [2023-12-02 15:32:59,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2248b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:59, skipping insertion in model container [2023-12-02 15:32:59,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:59" (3/3) ... [2023-12-02 15:32:59,610 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-2.c [2023-12-02 15:32:59,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:32:59,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 15:32:59,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:32:59,672 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;@356d4f90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:32:59,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 15:32:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 136 states have (on average 1.5) internal successors, (204), 144 states have internal predecessors, (204), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 15:32:59,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 15:32:59,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:32:59,688 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 15:32:59,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:32:59,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:32:59,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1167041629, now seen corresponding path program 1 times [2023-12-02 15:32:59,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:32:59,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127411970] [2023-12-02 15:32:59,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:32:59,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:32:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:32:59,984 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 15:32:59,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:32:59,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127411970] [2023-12-02 15:32:59,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127411970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:32:59,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:32:59,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:32:59,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743332971] [2023-12-02 15:32:59,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:32:59,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:32:59,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:33:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:33:00,020 INFO L87 Difference]: Start difference. First operand has 190 states, 136 states have (on average 1.5) internal successors, (204), 144 states have internal predecessors, (204), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 15:33:00,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:00,411 INFO L93 Difference]: Finished difference Result 502 states and 730 transitions. [2023-12-02 15:33:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:33:00,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 44 [2023-12-02 15:33:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:00,426 INFO L225 Difference]: With dead ends: 502 [2023-12-02 15:33:00,426 INFO L226 Difference]: Without dead ends: 313 [2023-12-02 15:33:00,431 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 15:33:00,434 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 325 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:00,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 481 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:33:00,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-02 15:33:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 302. [2023-12-02 15:33:00,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 217 states have (on average 1.400921658986175) internal successors, (304), 222 states have internal predecessors, (304), 56 states have call successors, (56), 29 states have call predecessors, (56), 27 states have return successors, (55), 52 states have call predecessors, (55), 52 states have call successors, (55) [2023-12-02 15:33:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 415 transitions. [2023-12-02 15:33:00,503 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 415 transitions. Word has length 44 [2023-12-02 15:33:00,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:00,503 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 415 transitions. [2023-12-02 15:33:00,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 15:33:00,504 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 415 transitions. [2023-12-02 15:33:00,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 15:33:00,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:00,507 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, 1] [2023-12-02 15:33:00,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:33:00,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:00,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1540586462, now seen corresponding path program 1 times [2023-12-02 15:33:00,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:00,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942323018] [2023-12-02 15:33:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:00,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:00,633 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 15:33:00,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942323018] [2023-12-02 15:33:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942323018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:00,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:00,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:33:00,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535264467] [2023-12-02 15:33:00,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:00,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:33:00,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:00,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:33:00,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:00,637 INFO L87 Difference]: Start difference. First operand 302 states and 415 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 15:33:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:01,420 INFO L93 Difference]: Finished difference Result 839 states and 1138 transitions. [2023-12-02 15:33:01,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:33:01,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2023-12-02 15:33:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:01,425 INFO L225 Difference]: With dead ends: 839 [2023-12-02 15:33:01,426 INFO L226 Difference]: Without dead ends: 373 [2023-12-02 15:33:01,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:33:01,430 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 740 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:01,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 831 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:33:01,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-12-02 15:33:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 288. [2023-12-02 15:33:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 203 states have (on average 1.3349753694581281) internal successors, (271), 208 states have internal predecessors, (271), 56 states have call successors, (56), 29 states have call predecessors, (56), 27 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 15:33:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 379 transitions. [2023-12-02 15:33:01,470 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 379 transitions. Word has length 45 [2023-12-02 15:33:01,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:01,470 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 379 transitions. [2023-12-02 15:33:01,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 15:33:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 379 transitions. [2023-12-02 15:33:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 15:33:01,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:01,473 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 15:33:01,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:33:01,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:01,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:01,474 INFO L85 PathProgramCache]: Analyzing trace with hash -980062020, now seen corresponding path program 1 times [2023-12-02 15:33:01,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:01,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599525883] [2023-12-02 15:33:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:01,578 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 15:33:01,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:01,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599525883] [2023-12-02 15:33:01,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599525883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:01,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:01,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:33:01,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020570838] [2023-12-02 15:33:01,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:33:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:33:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:33:01,581 INFO L87 Difference]: Start difference. First operand 288 states and 379 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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 15:33:02,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:02,185 INFO L93 Difference]: Finished difference Result 761 states and 1103 transitions. [2023-12-02 15:33:02,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:33:02,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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 15:33:02,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:02,192 INFO L225 Difference]: With dead ends: 761 [2023-12-02 15:33:02,192 INFO L226 Difference]: Without dead ends: 658 [2023-12-02 15:33:02,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:33:02,195 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 743 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:02,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 748 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:33:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-12-02 15:33:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 645. [2023-12-02 15:33:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 483 states have (on average 1.380952380952381) internal successors, (667), 491 states have internal predecessors, (667), 109 states have call successors, (109), 53 states have call predecessors, (109), 51 states have return successors, (135), 102 states have call predecessors, (135), 105 states have call successors, (135) [2023-12-02 15:33:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 911 transitions. [2023-12-02 15:33:02,270 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 911 transitions. Word has length 44 [2023-12-02 15:33:02,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:02,270 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 911 transitions. [2023-12-02 15:33:02,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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 15:33:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 911 transitions. [2023-12-02 15:33:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 15:33:02,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:02,274 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, 1, 1] [2023-12-02 15:33:02,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:33:02,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:02,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:02,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1237575313, now seen corresponding path program 1 times [2023-12-02 15:33:02,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:02,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699489049] [2023-12-02 15:33:02,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:02,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:02,377 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 15:33:02,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:02,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699489049] [2023-12-02 15:33:02,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699489049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:02,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:02,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:33:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115336078] [2023-12-02 15:33:02,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:02,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:33:02,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:33:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:02,380 INFO L87 Difference]: Start difference. First operand 645 states and 911 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 15:33:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:03,114 INFO L93 Difference]: Finished difference Result 1111 states and 1519 transitions. [2023-12-02 15:33:03,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:33:03,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2023-12-02 15:33:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:03,122 INFO L225 Difference]: With dead ends: 1111 [2023-12-02 15:33:03,123 INFO L226 Difference]: Without dead ends: 934 [2023-12-02 15:33:03,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:33:03,125 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 654 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:03,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 789 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:33:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2023-12-02 15:33:03,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 909. [2023-12-02 15:33:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 664 states have (on average 1.3343373493975903) internal successors, (886), 672 states have internal predecessors, (886), 158 states have call successors, (158), 87 states have call predecessors, (158), 85 states have return successors, (201), 151 states have call predecessors, (201), 154 states have call successors, (201) [2023-12-02 15:33:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1245 transitions. [2023-12-02 15:33:03,194 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1245 transitions. Word has length 46 [2023-12-02 15:33:03,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:03,194 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 1245 transitions. [2023-12-02 15:33:03,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 15:33:03,194 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1245 transitions. [2023-12-02 15:33:03,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 15:33:03,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:03,197 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, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:03,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 15:33:03,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:03,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:03,198 INFO L85 PathProgramCache]: Analyzing trace with hash -512559969, now seen corresponding path program 1 times [2023-12-02 15:33:03,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:03,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282013187] [2023-12-02 15:33:03,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:03,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:03,243 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 15:33:03,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:03,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282013187] [2023-12-02 15:33:03,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282013187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:03,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:03,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:33:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524217458] [2023-12-02 15:33:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:03,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:03,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:03,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:03,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:33:03,247 INFO L87 Difference]: Start difference. First operand 909 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:33:03,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:03,382 INFO L93 Difference]: Finished difference Result 910 states and 1246 transitions. [2023-12-02 15:33:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:03,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2023-12-02 15:33:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:03,387 INFO L225 Difference]: With dead ends: 910 [2023-12-02 15:33:03,388 INFO L226 Difference]: Without dead ends: 466 [2023-12-02 15:33:03,389 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 15:33:03,391 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 223 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:03,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 200 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-02 15:33:03,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-12-02 15:33:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 362 states have (on average 1.419889502762431) internal successors, (514), 367 states have internal predecessors, (514), 73 states have call successors, (73), 31 states have call predecessors, (73), 30 states have return successors, (101), 68 states have call predecessors, (101), 71 states have call successors, (101) [2023-12-02 15:33:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 688 transitions. [2023-12-02 15:33:03,441 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 688 transitions. Word has length 50 [2023-12-02 15:33:03,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:03,441 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 688 transitions. [2023-12-02 15:33:03,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:33:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 688 transitions. [2023-12-02 15:33:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 15:33:03,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:03,445 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 15:33:03,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 15:33:03,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:03,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash -590834030, now seen corresponding path program 1 times [2023-12-02 15:33:03,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:03,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177632640] [2023-12-02 15:33:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:03,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:03,583 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 15:33:03,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:03,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177632640] [2023-12-02 15:33:03,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177632640] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:03,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638895957] [2023-12-02 15:33:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:03,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:03,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:03,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:03,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:33:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:03,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:33:03,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:03,790 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 15:33:03,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:03,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638895957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:03,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:03,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-02 15:33:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084295011] [2023-12-02 15:33:03,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:03,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:03,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:03,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:03,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:03,793 INFO L87 Difference]: Start difference. First operand 466 states and 688 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 15:33:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:03,932 INFO L93 Difference]: Finished difference Result 1370 states and 2074 transitions. [2023-12-02 15:33:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:03,932 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 15:33:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:03,940 INFO L225 Difference]: With dead ends: 1370 [2023-12-02 15:33:03,940 INFO L226 Difference]: Without dead ends: 910 [2023-12-02 15:33:03,943 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 15:33:03,944 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 128 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:03,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 245 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:03,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-02 15:33:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 901. [2023-12-02 15:33:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 705 states have (on average 1.4099290780141844) internal successors, (994), 713 states have internal predecessors, (994), 135 states have call successors, (135), 61 states have call predecessors, (135), 60 states have return successors, (189), 127 states have call predecessors, (189), 133 states have call successors, (189) [2023-12-02 15:33:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1318 transitions. [2023-12-02 15:33:04,068 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1318 transitions. Word has length 82 [2023-12-02 15:33:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:04,068 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1318 transitions. [2023-12-02 15:33:04,069 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 15:33:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1318 transitions. [2023-12-02 15:33:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 15:33:04,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:04,073 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 15:33:04,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:33:04,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 15:33:04,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:04,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:04,275 INFO L85 PathProgramCache]: Analyzing trace with hash 257217202, now seen corresponding path program 1 times [2023-12-02 15:33:04,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:04,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118798992] [2023-12-02 15:33:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:04,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:04,374 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 15:33:04,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:04,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118798992] [2023-12-02 15:33:04,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118798992] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:04,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971797920] [2023-12-02 15:33:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:04,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:04,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:04,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:04,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:33:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:04,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:33:04,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:33:04,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:04,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971797920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:04,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:04,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-02 15:33:04,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831260837] [2023-12-02 15:33:04,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:04,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:04,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:04,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:04,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:04,577 INFO L87 Difference]: Start difference. First operand 901 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 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 15:33:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:04,758 INFO L93 Difference]: Finished difference Result 2660 states and 3984 transitions. [2023-12-02 15:33:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:04,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 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 15:33:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:04,772 INFO L225 Difference]: With dead ends: 2660 [2023-12-02 15:33:04,772 INFO L226 Difference]: Without dead ends: 1765 [2023-12-02 15:33:04,776 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 15:33:04,777 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 125 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:04,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 245 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2023-12-02 15:33:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1751. [2023-12-02 15:33:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1376 states have (on average 1.3982558139534884) internal successors, (1924), 1390 states have internal predecessors, (1924), 254 states have call successors, (254), 121 states have call predecessors, (254), 120 states have return successors, (356), 240 states have call predecessors, (356), 252 states have call successors, (356) [2023-12-02 15:33:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2534 transitions. [2023-12-02 15:33:04,943 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2534 transitions. Word has length 82 [2023-12-02 15:33:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:04,944 INFO L495 AbstractCegarLoop]: Abstraction has 1751 states and 2534 transitions. [2023-12-02 15:33:04,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 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 15:33:04,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2534 transitions. [2023-12-02 15:33:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 15:33:04,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:04,948 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 15:33:04,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:33:05,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 15:33:05,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:05,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:05,150 INFO L85 PathProgramCache]: Analyzing trace with hash -135329134, now seen corresponding path program 1 times [2023-12-02 15:33:05,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:05,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126200386] [2023-12-02 15:33:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:05,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:05,242 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 15:33:05,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:05,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126200386] [2023-12-02 15:33:05,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126200386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:05,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:05,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:33:05,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419006013] [2023-12-02 15:33:05,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:05,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:05,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:05,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:05,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:33:05,245 INFO L87 Difference]: Start difference. First operand 1751 states and 2534 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 15:33:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:05,477 INFO L93 Difference]: Finished difference Result 3571 states and 5269 transitions. [2023-12-02 15:33:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:05,478 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 15:33:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:05,498 INFO L225 Difference]: With dead ends: 3571 [2023-12-02 15:33:05,498 INFO L226 Difference]: Without dead ends: 2167 [2023-12-02 15:33:05,505 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 15:33:05,506 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 60 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:05,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 324 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:05,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2023-12-02 15:33:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1995. [2023-12-02 15:33:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1604 states have (on average 1.4214463840399003) internal successors, (2280), 1618 states have internal predecessors, (2280), 262 states have call successors, (262), 129 states have call predecessors, (262), 128 states have return successors, (364), 248 states have call predecessors, (364), 260 states have call successors, (364) [2023-12-02 15:33:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2906 transitions. [2023-12-02 15:33:05,719 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2906 transitions. Word has length 82 [2023-12-02 15:33:05,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:05,720 INFO L495 AbstractCegarLoop]: Abstraction has 1995 states and 2906 transitions. [2023-12-02 15:33:05,720 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 15:33:05,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2906 transitions. [2023-12-02 15:33:05,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 15:33:05,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:05,730 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 15:33:05,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 15:33:05,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:05,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:05,731 INFO L85 PathProgramCache]: Analyzing trace with hash 50389231, now seen corresponding path program 1 times [2023-12-02 15:33:05,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:05,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145343693] [2023-12-02 15:33:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:05,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:05,850 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 15:33:05,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145343693] [2023-12-02 15:33:05,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145343693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:05,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:05,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:33:05,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349262140] [2023-12-02 15:33:05,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:05,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:05,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:05,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:33:05,853 INFO L87 Difference]: Start difference. First operand 1995 states and 2906 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 15:33:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:06,200 INFO L93 Difference]: Finished difference Result 5884 states and 8723 transitions. [2023-12-02 15:33:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:06,201 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 15:33:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:06,231 INFO L225 Difference]: With dead ends: 5884 [2023-12-02 15:33:06,231 INFO L226 Difference]: Without dead ends: 3895 [2023-12-02 15:33:06,241 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 15:33:06,242 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 123 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:06,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 251 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2023-12-02 15:33:06,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 3863. [2023-12-02 15:33:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3108 states have (on average 1.404118404118404) internal successors, (4364), 3134 states have internal predecessors, (4364), 498 states have call successors, (498), 257 states have call predecessors, (498), 256 states have return successors, (688), 472 states have call predecessors, (688), 496 states have call successors, (688) [2023-12-02 15:33:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5550 transitions. [2023-12-02 15:33:06,580 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5550 transitions. Word has length 109 [2023-12-02 15:33:06,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:06,580 INFO L495 AbstractCegarLoop]: Abstraction has 3863 states and 5550 transitions. [2023-12-02 15:33:06,580 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 15:33:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5550 transitions. [2023-12-02 15:33:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 15:33:06,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:06,596 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 15:33:06,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 15:33:06,597 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:06,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash -399544029, now seen corresponding path program 1 times [2023-12-02 15:33:06,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:06,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777862743] [2023-12-02 15:33:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:06,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:06,862 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 15:33:06,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:06,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777862743] [2023-12-02 15:33:06,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777862743] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:06,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499803610] [2023-12-02 15:33:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:06,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:06,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:06,863 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:06,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:33:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:07,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:33:07,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:07,069 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 15:33:07,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:07,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499803610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:07,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:07,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 15:33:07,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142784183] [2023-12-02 15:33:07,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:07,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:07,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:07,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:07,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:33:07,071 INFO L87 Difference]: Start difference. First operand 3863 states and 5550 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 15:33:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:07,380 INFO L93 Difference]: Finished difference Result 7028 states and 10129 transitions. [2023-12-02 15:33:07,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:07,381 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 15:33:07,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:07,413 INFO L225 Difference]: With dead ends: 7028 [2023-12-02 15:33:07,413 INFO L226 Difference]: Without dead ends: 4748 [2023-12-02 15:33:07,424 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 15:33:07,425 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 134 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:07,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 173 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:33:07,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4748 states. [2023-12-02 15:33:07,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 4748. [2023-12-02 15:33:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4748 states, 3878 states have (on average 1.37132542547705) internal successors, (5318), 3904 states have internal predecessors, (5318), 535 states have call successors, (535), 334 states have call predecessors, (535), 334 states have return successors, (755), 510 states have call predecessors, (755), 533 states have call successors, (755) [2023-12-02 15:33:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 6608 transitions. [2023-12-02 15:33:07,870 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 6608 transitions. Word has length 124 [2023-12-02 15:33:07,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:07,871 INFO L495 AbstractCegarLoop]: Abstraction has 4748 states and 6608 transitions. [2023-12-02 15:33:07,871 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 15:33:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 6608 transitions. [2023-12-02 15:33:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 15:33:07,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:07,889 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 15:33:07,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:33:08,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 15:33:08,090 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:08,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:08,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2028194302, now seen corresponding path program 2 times [2023-12-02 15:33:08,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:08,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410538357] [2023-12-02 15:33:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-02 15:33:08,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410538357] [2023-12-02 15:33:08,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410538357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10330886] [2023-12-02 15:33:08,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:33:08,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:08,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:08,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:08,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:33:08,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:33:08,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:33:08,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:33:08,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 15:33:08,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:08,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10330886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:08,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:08,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 15:33:08,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427112015] [2023-12-02 15:33:08,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:08,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:08,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:08,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:08,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:33:08,521 INFO L87 Difference]: Start difference. First operand 4748 states and 6608 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 15:33:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:08,965 INFO L93 Difference]: Finished difference Result 9595 states and 13707 transitions. [2023-12-02 15:33:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:08,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 15:33:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:09,008 INFO L225 Difference]: With dead ends: 9595 [2023-12-02 15:33:09,009 INFO L226 Difference]: Without dead ends: 6776 [2023-12-02 15:33:09,019 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 15:33:09,020 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 139 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:09,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 361 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2023-12-02 15:33:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 6652. [2023-12-02 15:33:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6652 states, 5443 states have (on average 1.3645048686386183) internal successors, (7427), 5477 states have internal predecessors, (7427), 741 states have call successors, (741), 468 states have call predecessors, (741), 467 states have return successors, (1156), 707 states have call predecessors, (1156), 739 states have call successors, (1156) [2023-12-02 15:33:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6652 states to 6652 states and 9324 transitions. [2023-12-02 15:33:09,627 INFO L78 Accepts]: Start accepts. Automaton has 6652 states and 9324 transitions. Word has length 124 [2023-12-02 15:33:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:09,628 INFO L495 AbstractCegarLoop]: Abstraction has 6652 states and 9324 transitions. [2023-12-02 15:33:09,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 15:33:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 6652 states and 9324 transitions. [2023-12-02 15:33:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 15:33:09,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:09,645 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 15:33:09,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 15:33:09,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 15:33:09,849 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:09,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1538074057, now seen corresponding path program 1 times [2023-12-02 15:33:09,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867553582] [2023-12-02 15:33:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:10,091 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 15:33:10,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:10,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867553582] [2023-12-02 15:33:10,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867553582] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:10,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827204654] [2023-12-02 15:33:10,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:10,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:10,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:10,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:10,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:33:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:10,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:33:10,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:33:10,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827204654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:10,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:10,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 15:33:10,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519124285] [2023-12-02 15:33:10,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:10,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:33:10,311 INFO L87 Difference]: Start difference. First operand 6652 states and 9324 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, (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 15:33:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:10,776 INFO L93 Difference]: Finished difference Result 10112 states and 14678 transitions. [2023-12-02 15:33:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:10,776 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, (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 15:33:10,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:10,816 INFO L225 Difference]: With dead ends: 10112 [2023-12-02 15:33:10,816 INFO L226 Difference]: Without dead ends: 6684 [2023-12-02 15:33:10,831 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 15:33:10,832 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 119 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:10,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 351 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:10,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6684 states. [2023-12-02 15:33:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6684 to 6628. [2023-12-02 15:33:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6628 states, 5419 states have (on average 1.34102232884296) internal successors, (7267), 5453 states have internal predecessors, (7267), 741 states have call successors, (741), 468 states have call predecessors, (741), 467 states have return successors, (1156), 707 states have call predecessors, (1156), 739 states have call successors, (1156) [2023-12-02 15:33:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6628 states to 6628 states and 9164 transitions. [2023-12-02 15:33:11,325 INFO L78 Accepts]: Start accepts. Automaton has 6628 states and 9164 transitions. Word has length 124 [2023-12-02 15:33:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:11,325 INFO L495 AbstractCegarLoop]: Abstraction has 6628 states and 9164 transitions. [2023-12-02 15:33:11,326 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, (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 15:33:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 6628 states and 9164 transitions. [2023-12-02 15:33:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 15:33:11,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:11,341 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 15:33:11,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:33:11,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 15:33:11,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:11,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1668418199, now seen corresponding path program 1 times [2023-12-02 15:33:11,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:11,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368866645] [2023-12-02 15:33:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:11,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:11,767 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 15:33:11,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:11,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368866645] [2023-12-02 15:33:11,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368866645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:11,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670018079] [2023-12-02 15:33:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:11,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:11,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:11,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:11,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:33:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:11,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:33:11,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:11,957 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 15:33:11,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:11,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670018079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:11,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:11,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 15:33:11,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989168289] [2023-12-02 15:33:11,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:11,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:11,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:11,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:11,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:33:11,960 INFO L87 Difference]: Start difference. First operand 6628 states and 9164 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 15:33:12,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:12,421 INFO L93 Difference]: Finished difference Result 15720 states and 22052 transitions. [2023-12-02 15:33:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:12,421 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 15:33:12,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:12,444 INFO L225 Difference]: With dead ends: 15720 [2023-12-02 15:33:12,444 INFO L226 Difference]: Without dead ends: 9099 [2023-12-02 15:33:12,456 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 15:33:12,457 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 71 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:12,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 253 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9099 states. [2023-12-02 15:33:13,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9099 to 7476. [2023-12-02 15:33:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7476 states, 6199 states have (on average 1.3639296660751734) internal successors, (8455), 6234 states have internal predecessors, (8455), 775 states have call successors, (775), 502 states have call predecessors, (775), 501 states have return successors, (1190), 740 states have call predecessors, (1190), 773 states have call successors, (1190) [2023-12-02 15:33:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7476 states to 7476 states and 10420 transitions. [2023-12-02 15:33:13,191 INFO L78 Accepts]: Start accepts. Automaton has 7476 states and 10420 transitions. Word has length 124 [2023-12-02 15:33:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:13,192 INFO L495 AbstractCegarLoop]: Abstraction has 7476 states and 10420 transitions. [2023-12-02 15:33:13,192 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 15:33:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7476 states and 10420 transitions. [2023-12-02 15:33:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 15:33:13,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:13,211 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 15:33:13,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:33:13,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 15:33:13,412 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:13,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1330248190, now seen corresponding path program 2 times [2023-12-02 15:33:13,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:13,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877656300] [2023-12-02 15:33:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:13,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:13,519 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 15:33:13,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:13,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877656300] [2023-12-02 15:33:13,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877656300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:13,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346235875] [2023-12-02 15:33:13,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:33:13,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:13,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:13,521 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:13,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:33:13,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 15:33:13,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:33:13,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:33:13,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:13,723 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 15:33:13,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:13,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346235875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:13,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:13,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 15:33:13,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167048141] [2023-12-02 15:33:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:13,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:13,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:13,725 INFO L87 Difference]: Start difference. First operand 7476 states and 10420 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 15:33:14,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:14,344 INFO L93 Difference]: Finished difference Result 13871 states and 19605 transitions. [2023-12-02 15:33:14,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:14,345 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 15:33:14,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:14,370 INFO L225 Difference]: With dead ends: 13871 [2023-12-02 15:33:14,371 INFO L226 Difference]: Without dead ends: 10075 [2023-12-02 15:33:14,379 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 15:33:14,380 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 80 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:14,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 342 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:14,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10075 states. [2023-12-02 15:33:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10075 to 8900. [2023-12-02 15:33:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8900 states, 7511 states have (on average 1.3898282518972174) internal successors, (10439), 7546 states have internal predecessors, (10439), 831 states have call successors, (831), 558 states have call predecessors, (831), 557 states have return successors, (1246), 796 states have call predecessors, (1246), 829 states have call successors, (1246) [2023-12-02 15:33:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8900 states to 8900 states and 12516 transitions. [2023-12-02 15:33:14,888 INFO L78 Accepts]: Start accepts. Automaton has 8900 states and 12516 transitions. Word has length 124 [2023-12-02 15:33:14,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:14,888 INFO L495 AbstractCegarLoop]: Abstraction has 8900 states and 12516 transitions. [2023-12-02 15:33:14,889 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 15:33:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand 8900 states and 12516 transitions. [2023-12-02 15:33:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 15:33:14,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:14,903 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 15:33:14,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-02 15:33:15,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 15:33:15,104 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:15,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:15,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1764588123, now seen corresponding path program 1 times [2023-12-02 15:33:15,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:15,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269573233] [2023-12-02 15:33:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:15,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 15:33:15,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:15,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269573233] [2023-12-02 15:33:15,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269573233] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:15,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933136683] [2023-12-02 15:33:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:15,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:15,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:15,236 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:15,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:33:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:15,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:33:15,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:15,466 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 15:33:15,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:15,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933136683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:15,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:15,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 15:33:15,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265448899] [2023-12-02 15:33:15,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:15,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:15,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:15,468 INFO L87 Difference]: Start difference. First operand 8900 states and 12516 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 15:33:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:16,074 INFO L93 Difference]: Finished difference Result 16999 states and 24133 transitions. [2023-12-02 15:33:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:16,074 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 15:33:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:16,113 INFO L225 Difference]: With dead ends: 16999 [2023-12-02 15:33:16,113 INFO L226 Difference]: Without dead ends: 12449 [2023-12-02 15:33:16,127 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 15:33:16,128 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 92 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:16,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 354 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2023-12-02 15:33:16,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 10854. [2023-12-02 15:33:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10854 states, 9297 states have (on average 1.40378616758094) internal successors, (13051), 9332 states have internal predecessors, (13051), 915 states have call successors, (915), 642 states have call predecessors, (915), 641 states have return successors, (1330), 880 states have call predecessors, (1330), 913 states have call successors, (1330) [2023-12-02 15:33:16,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10854 states to 10854 states and 15296 transitions. [2023-12-02 15:33:16,679 INFO L78 Accepts]: Start accepts. Automaton has 10854 states and 15296 transitions. Word has length 124 [2023-12-02 15:33:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:16,679 INFO L495 AbstractCegarLoop]: Abstraction has 10854 states and 15296 transitions. [2023-12-02 15:33:16,680 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 15:33:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 10854 states and 15296 transitions. [2023-12-02 15:33:16,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 15:33:16,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:16,693 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 15:33:16,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 15:33:16,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 15:33:16,894 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:16,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:16,895 INFO L85 PathProgramCache]: Analyzing trace with hash 640497646, now seen corresponding path program 1 times [2023-12-02 15:33:16,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:16,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920832914] [2023-12-02 15:33:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:16,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:17,026 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 15:33:17,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:17,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920832914] [2023-12-02 15:33:17,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920832914] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:17,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43141924] [2023-12-02 15:33:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:17,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:17,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:17,028 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:17,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:33:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:17,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:33:17,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:17,222 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 15:33:17,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:17,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43141924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:17,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:17,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 15:33:17,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097863640] [2023-12-02 15:33:17,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:17,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:17,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:17,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:17,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:17,225 INFO L87 Difference]: Start difference. First operand 10854 states and 15296 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 15:33:18,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:18,119 INFO L93 Difference]: Finished difference Result 20585 states and 29231 transitions. [2023-12-02 15:33:18,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:18,120 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 15:33:18,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:18,154 INFO L225 Difference]: With dead ends: 20585 [2023-12-02 15:33:18,154 INFO L226 Difference]: Without dead ends: 15037 [2023-12-02 15:33:18,166 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 15:33:18,167 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 86 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:18,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 349 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:18,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-02 15:33:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 13638. [2023-12-02 15:33:18,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13638 states, 11829 states have (on average 1.4096711471806578) internal successors, (16675), 11864 states have internal predecessors, (16675), 1041 states have call successors, (1041), 768 states have call predecessors, (1041), 767 states have return successors, (1456), 1006 states have call predecessors, (1456), 1039 states have call successors, (1456) [2023-12-02 15:33:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13638 states to 13638 states and 19172 transitions. [2023-12-02 15:33:18,959 INFO L78 Accepts]: Start accepts. Automaton has 13638 states and 19172 transitions. Word has length 124 [2023-12-02 15:33:18,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:18,959 INFO L495 AbstractCegarLoop]: Abstraction has 13638 states and 19172 transitions. [2023-12-02 15:33:18,959 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 15:33:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 13638 states and 19172 transitions. [2023-12-02 15:33:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 15:33:18,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:18,973 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 15:33:18,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 15:33:19,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 15:33:19,174 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:19,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:19,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1245796939, now seen corresponding path program 1 times [2023-12-02 15:33:19,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:19,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52454684] [2023-12-02 15:33:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:19,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:19,257 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 15:33:19,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:19,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52454684] [2023-12-02 15:33:19,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52454684] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:19,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551178388] [2023-12-02 15:33:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:19,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:19,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:19,259 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:19,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 15:33:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:19,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:33:19,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:19,449 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 15:33:19,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:19,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551178388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:19,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:19,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 15:33:19,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767338282] [2023-12-02 15:33:19,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:19,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:19,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:19,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:19,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:19,452 INFO L87 Difference]: Start difference. First operand 13638 states and 19172 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 15:33:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:20,113 INFO L93 Difference]: Finished difference Result 20440 states and 28605 transitions. [2023-12-02 15:33:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:20,114 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 15:33:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:20,153 INFO L225 Difference]: With dead ends: 20440 [2023-12-02 15:33:20,153 INFO L226 Difference]: Without dead ends: 16600 [2023-12-02 15:33:20,162 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 15:33:20,162 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 73 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:20,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 327 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16600 states. [2023-12-02 15:33:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16600 to 16014. [2023-12-02 15:33:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16014 states, 13989 states have (on average 1.408177854028165) internal successors, (19699), 14024 states have internal predecessors, (19699), 1149 states have call successors, (1149), 876 states have call predecessors, (1149), 875 states have return successors, (1564), 1114 states have call predecessors, (1564), 1147 states have call successors, (1564) [2023-12-02 15:33:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16014 states to 16014 states and 22412 transitions. [2023-12-02 15:33:20,971 INFO L78 Accepts]: Start accepts. Automaton has 16014 states and 22412 transitions. Word has length 125 [2023-12-02 15:33:20,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:20,971 INFO L495 AbstractCegarLoop]: Abstraction has 16014 states and 22412 transitions. [2023-12-02 15:33:20,972 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 15:33:20,972 INFO L276 IsEmpty]: Start isEmpty. Operand 16014 states and 22412 transitions. [2023-12-02 15:33:20,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-02 15:33:20,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:20,985 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 15:33:20,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 15:33:21,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 15:33:21,185 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:21,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:21,186 INFO L85 PathProgramCache]: Analyzing trace with hash 49507651, now seen corresponding path program 1 times [2023-12-02 15:33:21,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:21,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66749580] [2023-12-02 15:33:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:21,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:21,509 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 15:33:21,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:21,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66749580] [2023-12-02 15:33:21,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66749580] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:21,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958998378] [2023-12-02 15:33:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:21,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:21,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:21,511 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:21,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:33:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:21,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 15:33:21,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:21,829 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 15:33:21,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:33:22,157 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 15:33:22,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958998378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:33:22,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1380182403] [2023-12-02 15:33:22,177 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2023-12-02 15:33:22,178 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:33:22,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:33:22,185 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:33:22,185 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:33:37,621 INFO L197 IcfgInterpreter]: Interpreting procedure error2 with input of size 30 for LOIs [2023-12-02 15:33:37,624 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events2 with input of size 63 for LOIs [2023-12-02 15:33:37,662 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread2 with input of size 1 for LOIs [2023-12-02 15:33:37,679 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels2 with input of size 1 for LOIs [2023-12-02 15:33:37,680 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 46 for LOIs [2023-12-02 15:33:37,799 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads2 with input of size 64 for LOIs [2023-12-02 15:33:38,429 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events2 with input of size 158 for LOIs [2023-12-02 15:33:38,569 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:33:48,415 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '270048#(and (exists ((|v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_25| Int)) (and (not (= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_25| 0)) (<= 0 |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_25|) (<= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_25| 1))) (not (= ~token~0 (+ ~local~0 4))) (exists ((|v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_13| Int)) (and (<= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_13| 2147483647) (not (= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_13| 0)) (<= 0 (+ |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_13| 2147483648)))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 15:33:48,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:33:48,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:33:48,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 9 [2023-12-02 15:33:48,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859273200] [2023-12-02 15:33:48,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:33:48,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 15:33:48,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 15:33:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=3950, Unknown=0, NotChecked=0, Total=4290 [2023-12-02 15:33:48,419 INFO L87 Difference]: Start difference. First operand 16014 states and 22412 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 15:33:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:49,752 INFO L93 Difference]: Finished difference Result 35807 states and 49949 transitions. [2023-12-02 15:33:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:33:49,752 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 15:33:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:49,786 INFO L225 Difference]: With dead ends: 35807 [2023-12-02 15:33:49,786 INFO L226 Difference]: Without dead ends: 19800 [2023-12-02 15:33:49,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1828 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=401, Invalid=4711, Unknown=0, NotChecked=0, Total=5112 [2023-12-02 15:33:49,819 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 402 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:49,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 498 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:33:49,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19800 states. [2023-12-02 15:33:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19800 to 19548. [2023-12-02 15:33:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19548 states, 17015 states have (on average 1.3822509550396709) internal successors, (23519), 17058 states have internal predecessors, (23519), 1439 states have call successors, (1439), 1094 states have call predecessors, (1439), 1093 states have return successors, (1905), 1396 states have call predecessors, (1905), 1437 states have call successors, (1905) [2023-12-02 15:33:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19548 states to 19548 states and 26863 transitions. [2023-12-02 15:33:50,992 INFO L78 Accepts]: Start accepts. Automaton has 19548 states and 26863 transitions. Word has length 129 [2023-12-02 15:33:50,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:50,992 INFO L495 AbstractCegarLoop]: Abstraction has 19548 states and 26863 transitions. [2023-12-02 15:33:50,992 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 15:33:50,992 INFO L276 IsEmpty]: Start isEmpty. Operand 19548 states and 26863 transitions. [2023-12-02 15:33:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 15:33:51,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:51,008 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 15:33:51,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 15:33:51,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 15:33:51,209 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:51,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:51,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1633238008, now seen corresponding path program 1 times [2023-12-02 15:33:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:51,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66340240] [2023-12-02 15:33:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:51,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:51,563 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 15:33:51,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66340240] [2023-12-02 15:33:51,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66340240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697868298] [2023-12-02 15:33:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:51,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:51,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:51,565 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:51,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 15:33:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:51,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 15:33:51,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 68 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:33:51,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:33:52,426 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 15:33:52,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697868298] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:33:52,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1138386650] [2023-12-02 15:33:52,431 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-12-02 15:33:52,431 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:33:52,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:33:52,432 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:33:52,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:34:04,639 INFO L197 IcfgInterpreter]: Interpreting procedure error2 with input of size 30 for LOIs [2023-12-02 15:34:04,643 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events2 with input of size 149 for LOIs [2023-12-02 15:34:04,810 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread2 with input of size 1 for LOIs [2023-12-02 15:34:04,819 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels2 with input of size 1 for LOIs [2023-12-02 15:34:04,820 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 46 for LOIs [2023-12-02 15:34:04,890 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads2 with input of size 1 for LOIs [2023-12-02 15:34:04,975 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events2 with input of size 158 for LOIs [2023-12-02 15:34:05,083 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:34:17,384 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '337052#(and (exists ((|v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_50| Int)) (and (not (= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_50| 0)) (<= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_50| 1) (<= 0 |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_50|))) (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (exists ((|v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_26| Int)) (and (not (= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_26| 0)) (<= 0 (+ |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_26| 2147483648)) (<= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_26| 2147483647))) (= ~m_st~0 1))' at error location [2023-12-02 15:34:17,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:34:17,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:34:17,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 16 [2023-12-02 15:34:17,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430745505] [2023-12-02 15:34:17,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:34:17,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 15:34:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:34:17,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 15:34:17,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=5005, Unknown=0, NotChecked=0, Total=5402 [2023-12-02 15:34:17,389 INFO L87 Difference]: Start difference. First operand 19548 states and 26863 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 15:34:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:34:24,682 INFO L93 Difference]: Finished difference Result 57801 states and 80453 transitions. [2023-12-02 15:34:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-12-02 15:34:24,683 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 15:34:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:34:24,746 INFO L225 Difference]: With dead ends: 57801 [2023-12-02 15:34:24,746 INFO L226 Difference]: Without dead ends: 37948 [2023-12-02 15:34:24,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 388 SyntacticMatches, 2 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13184 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=2440, Invalid=31970, Unknown=0, NotChecked=0, Total=34410 [2023-12-02 15:34:24,779 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1717 mSDsluCounter, 3656 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:34:24,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 4179 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 15:34:24,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37948 states. [2023-12-02 15:34:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37948 to 21655. [2023-12-02 15:34:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21655 states, 19054 states have (on average 1.3288548336307338) internal successors, (25320), 19097 states have internal predecessors, (25320), 1381 states have call successors, (1381), 1210 states have call predecessors, (1381), 1219 states have return successors, (1589), 1348 states have call predecessors, (1589), 1379 states have call successors, (1589) [2023-12-02 15:34:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21655 states to 21655 states and 28290 transitions. [2023-12-02 15:34:26,310 INFO L78 Accepts]: Start accepts. Automaton has 21655 states and 28290 transitions. Word has length 131 [2023-12-02 15:34:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:34:26,310 INFO L495 AbstractCegarLoop]: Abstraction has 21655 states and 28290 transitions. [2023-12-02 15:34:26,310 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 15:34:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 21655 states and 28290 transitions. [2023-12-02 15:34:26,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 15:34:26,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:34:26,328 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 15:34:26,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 15:34:26,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:26,529 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:34:26,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:34:26,529 INFO L85 PathProgramCache]: Analyzing trace with hash 997376629, now seen corresponding path program 1 times [2023-12-02 15:34:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:34:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782964508] [2023-12-02 15:34:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:34:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 15:34:26,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:34:26,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782964508] [2023-12-02 15:34:26,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782964508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:34:26,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976627566] [2023-12-02 15:34:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:26,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:26,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:34:26,693 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:34:26,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 15:34:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:26,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:34:26,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:34:26,861 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 15:34:26,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:34:26,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976627566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:34:26,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:34:26,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-02 15:34:26,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040114026] [2023-12-02 15:34:26,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:34:26,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:34:26,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:34:26,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:34:26,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:34:26,863 INFO L87 Difference]: Start difference. First operand 21655 states and 28290 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 15:34:28,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:34:28,146 INFO L93 Difference]: Finished difference Result 39288 states and 51520 transitions. [2023-12-02 15:34:28,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:34:28,147 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 15:34:28,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:34:28,185 INFO L225 Difference]: With dead ends: 39288 [2023-12-02 15:34:28,186 INFO L226 Difference]: Without dead ends: 22116 [2023-12-02 15:34:28,206 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 15:34:28,207 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 93 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:34:28,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 487 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:34:28,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22116 states. [2023-12-02 15:34:29,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22116 to 22007. [2023-12-02 15:34:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22007 states, 19358 states have (on average 1.3272032234734994) internal successors, (25692), 19425 states have internal predecessors, (25692), 1381 states have call successors, (1381), 1210 states have call predecessors, (1381), 1267 states have return successors, (1661), 1372 states have call predecessors, (1661), 1379 states have call successors, (1661) [2023-12-02 15:34:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22007 states to 22007 states and 28734 transitions. [2023-12-02 15:34:29,623 INFO L78 Accepts]: Start accepts. Automaton has 22007 states and 28734 transitions. Word has length 131 [2023-12-02 15:34:29,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:34:29,623 INFO L495 AbstractCegarLoop]: Abstraction has 22007 states and 28734 transitions. [2023-12-02 15:34:29,623 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 15:34:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 22007 states and 28734 transitions. [2023-12-02 15:34:29,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 15:34:29,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:34:29,641 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 15:34:29,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 15:34:29,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:29,842 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:34:29,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:34:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2013418986, now seen corresponding path program 1 times [2023-12-02 15:34:29,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:34:29,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437669493] [2023-12-02 15:34:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:29,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:34:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-02 15:34:29,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:34:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437669493] [2023-12-02 15:34:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437669493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:34:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514154845] [2023-12-02 15:34:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:34:29,985 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:34:29,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 15:34:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:30,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:34:30,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:34:30,166 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 15:34:30,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:34:30,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514154845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:34:30,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:34:30,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 15:34:30,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905410638] [2023-12-02 15:34:30,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:34:30,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:34:30,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:34:30,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:34:30,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:34:30,168 INFO L87 Difference]: Start difference. First operand 22007 states and 28734 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 15:34:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:34:31,477 INFO L93 Difference]: Finished difference Result 39095 states and 51457 transitions. [2023-12-02 15:34:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:34:31,478 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 15:34:31,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:34:31,515 INFO L225 Difference]: With dead ends: 39095 [2023-12-02 15:34:31,515 INFO L226 Difference]: Without dead ends: 21571 [2023-12-02 15:34:31,535 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 15:34:31,536 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 28 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:34:31,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 266 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:34:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21571 states. [2023-12-02 15:34:32,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21571 to 20895. [2023-12-02 15:34:32,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20895 states, 18390 states have (on average 1.3285481239804242) internal successors, (24432), 18421 states have internal predecessors, (24432), 1333 states have call successors, (1333), 1162 states have call predecessors, (1333), 1171 states have return successors, (1517), 1312 states have call predecessors, (1517), 1331 states have call successors, (1517) [2023-12-02 15:34:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20895 states to 20895 states and 27282 transitions. [2023-12-02 15:34:32,903 INFO L78 Accepts]: Start accepts. Automaton has 20895 states and 27282 transitions. Word has length 132 [2023-12-02 15:34:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:34:32,903 INFO L495 AbstractCegarLoop]: Abstraction has 20895 states and 27282 transitions. [2023-12-02 15:34:32,903 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 15:34:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 20895 states and 27282 transitions. [2023-12-02 15:34:32,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 15:34:32,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:34:32,918 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 15:34:32,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 15:34:33,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:33,119 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:34:33,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:34:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1584601775, now seen corresponding path program 1 times [2023-12-02 15:34:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:34:33,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389374697] [2023-12-02 15:34:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:33,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:34:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 15:34:33,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:34:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389374697] [2023-12-02 15:34:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389374697] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:34:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480372078] [2023-12-02 15:34:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:33,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:33,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:34:33,256 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:34:33,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 15:34:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:33,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:34:33,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:34:33,457 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 15:34:33,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:34:33,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480372078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:34:33,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:34:33,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-12-02 15:34:33,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391817633] [2023-12-02 15:34:33,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:34:33,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:34:33,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:34:33,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:34:33,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:34:33,460 INFO L87 Difference]: Start difference. First operand 20895 states and 27282 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 15:34:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:34:35,440 INFO L93 Difference]: Finished difference Result 48141 states and 62814 transitions. [2023-12-02 15:34:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:34:35,440 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 15:34:35,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:34:35,489 INFO L225 Difference]: With dead ends: 48141 [2023-12-02 15:34:35,489 INFO L226 Difference]: Without dead ends: 27300 [2023-12-02 15:34:35,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:34:35,511 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 342 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:34:35,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 348 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:34:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27300 states. [2023-12-02 15:34:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27300 to 27296. [2023-12-02 15:34:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27296 states, 23897 states have (on average 1.3056032137925262) internal successors, (31200), 23938 states have internal predecessors, (31200), 1809 states have call successors, (1809), 1574 states have call predecessors, (1809), 1589 states have return successors, (2069), 1784 states have call predecessors, (2069), 1807 states have call successors, (2069) [2023-12-02 15:34:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27296 states to 27296 states and 35078 transitions. [2023-12-02 15:34:37,496 INFO L78 Accepts]: Start accepts. Automaton has 27296 states and 35078 transitions. Word has length 133 [2023-12-02 15:34:37,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:34:37,496 INFO L495 AbstractCegarLoop]: Abstraction has 27296 states and 35078 transitions. [2023-12-02 15:34:37,497 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 15:34:37,497 INFO L276 IsEmpty]: Start isEmpty. Operand 27296 states and 35078 transitions. [2023-12-02 15:34:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 15:34:37,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:34:37,512 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 15:34:37,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 15:34:37,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 15:34:37,713 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:34:37,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:34:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1693078074, now seen corresponding path program 1 times [2023-12-02 15:34:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:34:37,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478786406] [2023-12-02 15:34:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:37,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:34:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:37,937 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 15:34:37,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:34:37,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478786406] [2023-12-02 15:34:37,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478786406] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:34:37,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920724541] [2023-12-02 15:34:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:37,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:37,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:34:37,940 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:34:37,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 15:34:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:38,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:34:38,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:34:38,196 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 15:34:38,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:34:38,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920724541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:34:38,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:34:38,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-12-02 15:34:38,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931703173] [2023-12-02 15:34:38,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:34:38,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:34:38,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:34:38,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:34:38,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:34:38,199 INFO L87 Difference]: Start difference. First operand 27296 states and 35078 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 15:34:40,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:34:40,875 INFO L93 Difference]: Finished difference Result 63074 states and 81200 transitions. [2023-12-02 15:34:40,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:34:40,876 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 15:34:40,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:34:40,940 INFO L225 Difference]: With dead ends: 63074 [2023-12-02 15:34:40,940 INFO L226 Difference]: Without dead ends: 35832 [2023-12-02 15:34:40,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 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 15:34:40,972 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 362 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:34:40,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 345 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:34:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35832 states. [2023-12-02 15:34:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35832 to 35828. [2023-12-02 15:34:43,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35828 states, 31221 states have (on average 1.2896127606418757) internal successors, (40263), 31276 states have internal predecessors, (40263), 2454 states have call successors, (2454), 2129 states have call predecessors, (2454), 2152 states have return successors, (2817), 2423 states have call predecessors, (2817), 2452 states have call successors, (2817) [2023-12-02 15:34:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35828 states to 35828 states and 45534 transitions. [2023-12-02 15:34:43,740 INFO L78 Accepts]: Start accepts. Automaton has 35828 states and 45534 transitions. Word has length 137 [2023-12-02 15:34:43,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:34:43,740 INFO L495 AbstractCegarLoop]: Abstraction has 35828 states and 45534 transitions. [2023-12-02 15:34:43,740 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 15:34:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 35828 states and 45534 transitions. [2023-12-02 15:34:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 15:34:43,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:34:43,764 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 15:34:43,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 15:34:43,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:43,965 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:34:43,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:34:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash -223828272, now seen corresponding path program 1 times [2023-12-02 15:34:43,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:34:43,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907401284] [2023-12-02 15:34:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:43,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:34:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:44,094 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 15:34:44,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:34:44,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907401284] [2023-12-02 15:34:44,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907401284] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:34:44,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700065392] [2023-12-02 15:34:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:44,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:44,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:34:44,096 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:34:44,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 15:34:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:44,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:34:44,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:34:44,319 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 15:34:44,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:34:44,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700065392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:34:44,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:34:44,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-12-02 15:34:44,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121113492] [2023-12-02 15:34:44,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:34:44,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:34:44,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:34:44,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:34:44,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:34:44,321 INFO L87 Difference]: Start difference. First operand 35828 states and 45534 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 15:34:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:34:46,852 INFO L93 Difference]: Finished difference Result 63791 states and 81777 transitions. [2023-12-02 15:34:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:34:46,853 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 15:34:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:34:46,912 INFO L225 Difference]: With dead ends: 63791 [2023-12-02 15:34:46,912 INFO L226 Difference]: Without dead ends: 37899 [2023-12-02 15:34:46,939 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 15:34:46,940 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 97 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:34:46,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 184 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:34:46,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37899 states. [2023-12-02 15:34:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37899 to 37719. [2023-12-02 15:34:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37719 states, 32931 states have (on average 1.2812547447693663) internal successors, (42193), 32986 states have internal predecessors, (42193), 2502 states have call successors, (2502), 2262 states have call predecessors, (2502), 2285 states have return successors, (3051), 2471 states have call predecessors, (3051), 2500 states have call successors, (3051) [2023-12-02 15:34:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37719 states to 37719 states and 47746 transitions. [2023-12-02 15:34:50,356 INFO L78 Accepts]: Start accepts. Automaton has 37719 states and 47746 transitions. Word has length 141 [2023-12-02 15:34:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:34:50,357 INFO L495 AbstractCegarLoop]: Abstraction has 37719 states and 47746 transitions. [2023-12-02 15:34:50,357 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 15:34:50,357 INFO L276 IsEmpty]: Start isEmpty. Operand 37719 states and 47746 transitions. [2023-12-02 15:34:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 15:34:50,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:34:50,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:34:50,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 15:34:50,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:50,591 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:34:50,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:34:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1482510990, now seen corresponding path program 1 times [2023-12-02 15:34:50,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:34:50,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908492918] [2023-12-02 15:34:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:50,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:34:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 37 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 15:34:50,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:34:50,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908492918] [2023-12-02 15:34:50,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908492918] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:34:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202728748] [2023-12-02 15:34:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:50,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:50,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:34:50,694 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:34:50,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 15:34:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:50,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:34:50,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:34:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 15:34:50,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:34:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202728748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:34:50,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:34:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 15:34:50,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440057686] [2023-12-02 15:34:50,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:34:50,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:34:50,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:34:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:34:50,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:34:50,866 INFO L87 Difference]: Start difference. First operand 37719 states and 47746 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 15:34:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:34:53,905 INFO L93 Difference]: Finished difference Result 64955 states and 83180 transitions. [2023-12-02 15:34:53,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:34:53,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 15:34:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:34:53,968 INFO L225 Difference]: With dead ends: 64955 [2023-12-02 15:34:53,968 INFO L226 Difference]: Without dead ends: 37699 [2023-12-02 15:34:53,992 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 15:34:53,992 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 113 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:34:53,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 345 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:34:54,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37699 states. [2023-12-02 15:34:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37699 to 37117. [2023-12-02 15:34:56,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37117 states, 32329 states have (on average 1.2583439017600297) internal successors, (40681), 32384 states have internal predecessors, (40681), 2502 states have call successors, (2502), 2262 states have call predecessors, (2502), 2285 states have return successors, (3051), 2471 states have call predecessors, (3051), 2500 states have call successors, (3051) [2023-12-02 15:34:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37117 states to 37117 states and 46234 transitions. [2023-12-02 15:34:56,924 INFO L78 Accepts]: Start accepts. Automaton has 37117 states and 46234 transitions. Word has length 141 [2023-12-02 15:34:56,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:34:56,924 INFO L495 AbstractCegarLoop]: Abstraction has 37117 states and 46234 transitions. [2023-12-02 15:34:56,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 15:34:56,924 INFO L276 IsEmpty]: Start isEmpty. Operand 37117 states and 46234 transitions. [2023-12-02 15:34:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 15:34:56,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:34:56,947 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:34:56,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 15:34:57,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:57,147 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:34:57,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:34:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1655559636, now seen corresponding path program 1 times [2023-12-02 15:34:57,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:34:57,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984919273] [2023-12-02 15:34:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:57,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:34:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:57,402 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 15:34:57,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:34:57,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984919273] [2023-12-02 15:34:57,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984919273] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:34:57,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580103756] [2023-12-02 15:34:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:57,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:57,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:34:57,404 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:34:57,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 15:34:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:57,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 15:34:57,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:34:57,628 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 15:34:57,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:34:57,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580103756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:34:57,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:34:57,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 15:34:57,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332908284] [2023-12-02 15:34:57,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:34:57,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:34:57,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:34:57,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:34:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:34:57,630 INFO L87 Difference]: Start difference. First operand 37117 states and 46234 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 15:35:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:01,792 INFO L93 Difference]: Finished difference Result 70945 states and 88756 transitions. [2023-12-02 15:35:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:35:01,793 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 15:35:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:01,872 INFO L225 Difference]: With dead ends: 70945 [2023-12-02 15:35:01,872 INFO L226 Difference]: Without dead ends: 44867 [2023-12-02 15:35:01,897 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 15:35:01,897 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 243 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:01,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 483 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:35:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44867 states. [2023-12-02 15:35:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44867 to 39338. [2023-12-02 15:35:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39338 states, 34111 states have (on average 1.2541115769106739) internal successors, (42779), 34168 states have internal predecessors, (42779), 2771 states have call successors, (2771), 2468 states have call predecessors, (2771), 2455 states have return successors, (3507), 2702 states have call predecessors, (3507), 2769 states have call successors, (3507) [2023-12-02 15:35:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39338 states to 39338 states and 49057 transitions. [2023-12-02 15:35:05,461 INFO L78 Accepts]: Start accepts. Automaton has 39338 states and 49057 transitions. Word has length 143 [2023-12-02 15:35:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:05,461 INFO L495 AbstractCegarLoop]: Abstraction has 39338 states and 49057 transitions. [2023-12-02 15:35:05,461 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 15:35:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 39338 states and 49057 transitions. [2023-12-02 15:35:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 15:35:05,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:05,492 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 15:35:05,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 15:35:05,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:05,693 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:35:05,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:05,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1487830948, now seen corresponding path program 1 times [2023-12-02 15:35:05,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:05,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261271277] [2023-12-02 15:35:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:05,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:06,067 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 15:35:06,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261271277] [2023-12-02 15:35:06,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261271277] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:35:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886660218] [2023-12-02 15:35:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:06,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:06,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:06,069 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:06,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 15:35:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:06,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 15:35:06,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:06,390 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 15:35:06,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:35:07,054 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 15:35:07,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886660218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:35:07,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1181219120] [2023-12-02 15:35:07,058 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2023-12-02 15:35:07,058 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:35:07,059 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:35:07,059 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:35:07,059 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:35:20,535 INFO L197 IcfgInterpreter]: Interpreting procedure error2 with input of size 30 for LOIs [2023-12-02 15:35:20,538 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events2 with input of size 149 for LOIs [2023-12-02 15:35:20,706 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread2 with input of size 1 for LOIs [2023-12-02 15:35:20,717 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels2 with input of size 1 for LOIs [2023-12-02 15:35:20,718 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 46 for LOIs [2023-12-02 15:35:20,802 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads2 with input of size 1 for LOIs [2023-12-02 15:35:20,856 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events2 with input of size 158 for LOIs [2023-12-02 15:35:20,993 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:35:38,178 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1167514#(and (exists ((|v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_69| Int)) (and (not (= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_69| 0)) (<= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_69| 1) (<= 0 |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_69|))) (not (= ~token~0 (+ ~local~0 4))) (exists ((|v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_33| Int)) (and (not (= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_33| 0)) (<= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_33| 2147483647) (<= 0 (+ |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_33| 2147483648)))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 15:35:38,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:35:38,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:35:38,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2023-12-02 15:35:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988452597] [2023-12-02 15:35:38,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:35:38,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 15:35:38,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:38,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 15:35:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=6292, Unknown=0, NotChecked=0, Total=6806 [2023-12-02 15:35:38,184 INFO L87 Difference]: Start difference. First operand 39338 states and 49057 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 15:35:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:54,040 INFO L93 Difference]: Finished difference Result 122076 states and 156165 transitions. [2023-12-02 15:35:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-12-02 15:35:54,040 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 15:35:54,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:54,219 INFO L225 Difference]: With dead ends: 122076 [2023-12-02 15:35:54,219 INFO L226 Difference]: Without dead ends: 83065 [2023-12-02 15:35:54,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 443 SyntacticMatches, 2 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33346 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=5271, Invalid=73971, Unknown=0, NotChecked=0, Total=79242 [2023-12-02 15:35:54,282 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 4598 mSDsluCounter, 6699 mSDsCounter, 0 mSdLazyCounter, 3673 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4616 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 3673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:54,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4616 Valid, 7597 Invalid, 4532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [859 Valid, 3673 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 15:35:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83065 states. [2023-12-02 15:35:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83065 to 49021. [2023-12-02 15:35:59,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49021 states, 42731 states have (on average 1.2488591420748403) internal successors, (53365), 42850 states have internal predecessors, (53365), 3246 states have call successors, (3246), 3042 states have call predecessors, (3246), 3043 states have return successors, (3984), 3129 states have call predecessors, (3984), 3244 states have call successors, (3984) [2023-12-02 15:35:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49021 states to 49021 states and 60595 transitions. [2023-12-02 15:35:59,147 INFO L78 Accepts]: Start accepts. Automaton has 49021 states and 60595 transitions. Word has length 140 [2023-12-02 15:35:59,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:59,147 INFO L495 AbstractCegarLoop]: Abstraction has 49021 states and 60595 transitions. [2023-12-02 15:35:59,148 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 15:35:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 49021 states and 60595 transitions. [2023-12-02 15:35:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 15:35:59,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:59,167 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 15:35:59,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 15:35:59,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 15:35:59,367 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:35:59,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:59,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1732289805, now seen corresponding path program 1 times [2023-12-02 15:35:59,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:59,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579317734] [2023-12-02 15:35:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:59,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:59,797 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 15:35:59,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:59,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579317734] [2023-12-02 15:35:59,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579317734] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:35:59,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014348873] [2023-12-02 15:35:59,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:59,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:59,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:59,799 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:59,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 15:35:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:59,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 15:35:59,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:36:00,319 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 15:36:00,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:36:00,933 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 15:36:00,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014348873] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:36:00,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [165831094] [2023-12-02 15:36:00,936 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2023-12-02 15:36:00,936 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:36:00,936 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:36:00,936 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:36:00,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:36:17,408 INFO L197 IcfgInterpreter]: Interpreting procedure error2 with input of size 30 for LOIs [2023-12-02 15:36:17,412 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events2 with input of size 149 for LOIs [2023-12-02 15:36:17,579 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread2 with input of size 1 for LOIs [2023-12-02 15:36:17,589 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels2 with input of size 1 for LOIs [2023-12-02 15:36:17,590 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 46 for LOIs [2023-12-02 15:36:17,809 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads2 with input of size 1 for LOIs [2023-12-02 15:36:17,952 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events2 with input of size 158 for LOIs [2023-12-02 15:36:18,065 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:36:41,964 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1374603#(and (exists ((|v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_91| Int)) (and (not (= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_91| 0)) (<= 0 |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_91|) (<= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_91| 1))) (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (exists ((|v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_43| Int)) (and (<= 0 (+ |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_43| 2147483648)) (not (= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_43| 0)) (<= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_43| 2147483647))) (= ~m_st~0 1))' at error location [2023-12-02 15:36:41,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:36:41,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:36:41,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 18 [2023-12-02 15:36:41,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235531329] [2023-12-02 15:36:41,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:36:41,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:36:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:36:41,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:36:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=6964, Unknown=0, NotChecked=0, Total=7482 [2023-12-02 15:36:41,968 INFO L87 Difference]: Start difference. First operand 49021 states and 60595 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 15:37:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:03,401 INFO L93 Difference]: Finished difference Result 126420 states and 163031 transitions. [2023-12-02 15:37:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 301 states. [2023-12-02 15:37:03,401 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 15:37:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:03,575 INFO L225 Difference]: With dead ends: 126420 [2023-12-02 15:37:03,575 INFO L226 Difference]: Without dead ends: 93327 [2023-12-02 15:37:03,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 508 SyntacticMatches, 2 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60461 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=8542, Invalid=130214, Unknown=0, NotChecked=0, Total=138756 [2023-12-02 15:37:03,617 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 4219 mSDsluCounter, 6967 mSDsCounter, 0 mSdLazyCounter, 4920 mSolverCounterSat, 769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 7989 SdHoareTripleChecker+Invalid, 5689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 4920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:03,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4235 Valid, 7989 Invalid, 5689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [769 Valid, 4920 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-02 15:37:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93327 states. [2023-12-02 15:37:07,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93327 to 43026. [2023-12-02 15:37:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43026 states, 37590 states have (on average 1.246315509444001) internal successors, (46849), 37722 states have internal predecessors, (46849), 2766 states have call successors, (2766), 2654 states have call predecessors, (2766), 2669 states have return successors, (3448), 2650 states have call predecessors, (3448), 2764 states have call successors, (3448) [2023-12-02 15:37:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43026 states to 43026 states and 53063 transitions. [2023-12-02 15:37:07,961 INFO L78 Accepts]: Start accepts. Automaton has 43026 states and 53063 transitions. Word has length 142 [2023-12-02 15:37:07,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:07,961 INFO L495 AbstractCegarLoop]: Abstraction has 43026 states and 53063 transitions. [2023-12-02 15:37:07,961 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 15:37:07,961 INFO L276 IsEmpty]: Start isEmpty. Operand 43026 states and 53063 transitions. [2023-12-02 15:37:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 15:37:07,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:07,977 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 15:37:07,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 15:37:08,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 15:37:08,178 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:37:08,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1832877321, now seen corresponding path program 1 times [2023-12-02 15:37:08,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:37:08,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559081480] [2023-12-02 15:37:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:08,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:37:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:08,283 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 15:37:08,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:37:08,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559081480] [2023-12-02 15:37:08,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559081480] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:37:08,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312683632] [2023-12-02 15:37:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:08,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:08,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:37:08,285 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:37:08,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 15:37:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:08,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:37:08,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:08,483 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 15:37:08,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:37:08,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312683632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:37:08,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:37:08,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-02 15:37:08,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738257454] [2023-12-02 15:37:08,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:37:08,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:37:08,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:37:08,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:37:08,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:37:08,485 INFO L87 Difference]: Start difference. First operand 43026 states and 53063 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 15:37:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:12,753 INFO L93 Difference]: Finished difference Result 88689 states and 110073 transitions. [2023-12-02 15:37:12,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:37:12,754 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 15:37:12,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:12,851 INFO L225 Difference]: With dead ends: 88689 [2023-12-02 15:37:12,851 INFO L226 Difference]: Without dead ends: 50051 [2023-12-02 15:37:12,895 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 15:37:12,896 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 129 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:12,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 515 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:37:12,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50051 states. [2023-12-02 15:37:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50051 to 47865. [2023-12-02 15:37:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47865 states, 41670 states have (on average 1.2424046076313895) internal successors, (51771), 41919 states have internal predecessors, (51771), 3065 states have call successors, (3065), 2905 states have call predecessors, (3065), 3129 states have return successors, (4629), 3041 states have call predecessors, (4629), 3063 states have call successors, (4629) [2023-12-02 15:37:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47865 states to 47865 states and 59465 transitions. [2023-12-02 15:37:17,843 INFO L78 Accepts]: Start accepts. Automaton has 47865 states and 59465 transitions. Word has length 141 [2023-12-02 15:37:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:17,843 INFO L495 AbstractCegarLoop]: Abstraction has 47865 states and 59465 transitions. [2023-12-02 15:37:17,843 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 15:37:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 47865 states and 59465 transitions. [2023-12-02 15:37:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 15:37:17,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:17,866 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 15:37:17,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-02 15:37:18,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 15:37:18,067 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:37:18,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1438131275, now seen corresponding path program 1 times [2023-12-02 15:37:18,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:37:18,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763397357] [2023-12-02 15:37:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:18,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:37:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:18,112 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 15:37:18,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:37:18,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763397357] [2023-12-02 15:37:18,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763397357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:37:18,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780571691] [2023-12-02 15:37:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:18,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:18,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:37:18,113 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:37:18,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 15:37:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:18,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:37:18,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:18,293 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 15:37:18,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:37:18,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780571691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:37:18,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:37:18,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 15:37:18,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16528492] [2023-12-02 15:37:18,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:37:18,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:37:18,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:37:18,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:37:18,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:37:18,295 INFO L87 Difference]: Start difference. First operand 47865 states and 59465 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 15:37:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:22,428 INFO L93 Difference]: Finished difference Result 89490 states and 113480 transitions. [2023-12-02 15:37:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:37:22,428 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 15:37:22,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:22,506 INFO L225 Difference]: With dead ends: 89490 [2023-12-02 15:37:22,506 INFO L226 Difference]: Without dead ends: 46013 [2023-12-02 15:37:22,542 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 15:37:22,543 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 113 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:22,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 331 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:37:22,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46013 states. [2023-12-02 15:37:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46013 to 45363. [2023-12-02 15:37:26,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45363 states, 39360 states have (on average 1.2109756097560975) internal successors, (47664), 39609 states have internal predecessors, (47664), 2969 states have call successors, (2969), 2809 states have call predecessors, (2969), 3033 states have return successors, (4533), 2945 states have call predecessors, (4533), 2967 states have call successors, (4533) [2023-12-02 15:37:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45363 states to 45363 states and 55166 transitions. [2023-12-02 15:37:26,841 INFO L78 Accepts]: Start accepts. Automaton has 45363 states and 55166 transitions. Word has length 141 [2023-12-02 15:37:26,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:26,841 INFO L495 AbstractCegarLoop]: Abstraction has 45363 states and 55166 transitions. [2023-12-02 15:37:26,841 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 15:37:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 45363 states and 55166 transitions. [2023-12-02 15:37:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 15:37:26,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:26,860 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 15:37:26,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-02 15:37:27,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:27,061 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:37:27,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash 379863497, now seen corresponding path program 1 times [2023-12-02 15:37:27,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:37:27,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781205118] [2023-12-02 15:37:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:27,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:37:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:27,167 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 15:37:27,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:37:27,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781205118] [2023-12-02 15:37:27,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781205118] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:37:27,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666119625] [2023-12-02 15:37:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:27,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:27,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:37:27,169 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:37:27,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 15:37:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:27,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:37:27,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:27,347 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 15:37:27,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:37:27,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666119625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:37:27,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:37:27,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-12-02 15:37:27,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677098868] [2023-12-02 15:37:27,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:37:27,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:37:27,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:37:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:37:27,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:37:27,349 INFO L87 Difference]: Start difference. First operand 45363 states and 55166 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 15:37:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:31,479 INFO L93 Difference]: Finished difference Result 82201 states and 102388 transitions. [2023-12-02 15:37:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:37:31,480 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 15:37:31,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:31,581 INFO L225 Difference]: With dead ends: 82201 [2023-12-02 15:37:31,581 INFO L226 Difference]: Without dead ends: 47406 [2023-12-02 15:37:31,628 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 15:37:31,629 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 103 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:31,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 185 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:37:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47406 states. [2023-12-02 15:37:36,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47406 to 47029. [2023-12-02 15:37:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47029 states, 40821 states have (on average 1.1974473922735847) internal successors, (48881), 41096 states have internal predecessors, (48881), 3018 states have call successors, (3018), 2919 states have call predecessors, (3018), 3189 states have return successors, (4901), 3014 states have call predecessors, (4901), 3016 states have call successors, (4901) [2023-12-02 15:37:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47029 states to 47029 states and 56800 transitions. [2023-12-02 15:37:36,607 INFO L78 Accepts]: Start accepts. Automaton has 47029 states and 56800 transitions. Word has length 141 [2023-12-02 15:37:36,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:36,607 INFO L495 AbstractCegarLoop]: Abstraction has 47029 states and 56800 transitions. [2023-12-02 15:37:36,607 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 15:37:36,608 INFO L276 IsEmpty]: Start isEmpty. Operand 47029 states and 56800 transitions. [2023-12-02 15:37:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 15:37:36,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:36,626 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 15:37:36,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 15:37:36,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:36,827 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:37:36,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:36,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1360177016, now seen corresponding path program 1 times [2023-12-02 15:37:36,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:37:36,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941934797] [2023-12-02 15:37:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:36,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:37:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:37,201 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 15:37:37,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:37:37,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941934797] [2023-12-02 15:37:37,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941934797] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:37:37,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828399276] [2023-12-02 15:37:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:37,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:37,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:37:37,203 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:37:37,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 15:37:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:37,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:37:37,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:37,539 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 15:37:37,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:37:37,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828399276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:37:37,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:37:37,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-02 15:37:37,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856896348] [2023-12-02 15:37:37,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:37:37,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:37:37,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:37:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:37:37,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-02 15:37:37,541 INFO L87 Difference]: Start difference. First operand 47029 states and 56800 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 15:37:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:42,228 INFO L93 Difference]: Finished difference Result 85674 states and 104460 transitions. [2023-12-02 15:37:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:37:42,229 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 15:37:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:42,302 INFO L225 Difference]: With dead ends: 85674 [2023-12-02 15:37:42,302 INFO L226 Difference]: Without dead ends: 43365 [2023-12-02 15:37:42,337 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 15:37:42,338 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 224 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:42,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 146 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:37:42,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43365 states. [2023-12-02 15:37:46,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43365 to 40531. [2023-12-02 15:37:46,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40531 states, 35293 states have (on average 1.1865525741648486) internal successors, (41877), 35466 states have internal predecessors, (41877), 2564 states have call successors, (2564), 2531 states have call predecessors, (2564), 2673 states have return successors, (3382), 2534 states have call predecessors, (3382), 2562 states have call successors, (3382) [2023-12-02 15:37:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40531 states to 40531 states and 47823 transitions. [2023-12-02 15:37:46,891 INFO L78 Accepts]: Start accepts. Automaton has 40531 states and 47823 transitions. Word has length 138 [2023-12-02 15:37:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:46,892 INFO L495 AbstractCegarLoop]: Abstraction has 40531 states and 47823 transitions. [2023-12-02 15:37:46,892 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 15:37:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand 40531 states and 47823 transitions. [2023-12-02 15:37:46,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 15:37:46,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:46,906 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 15:37:46,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 15:37:47,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:47,107 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:37:47,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:47,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1680456371, now seen corresponding path program 1 times [2023-12-02 15:37:47,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:37:47,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706365535] [2023-12-02 15:37:47,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:47,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:37:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:47,242 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 15:37:47,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:37:47,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706365535] [2023-12-02 15:37:47,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706365535] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:37:47,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484729161] [2023-12-02 15:37:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:47,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:47,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:37:47,244 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:37:47,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 15:37:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:47,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:37:47,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:47,528 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 15:37:47,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:37:47,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484729161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:37:47,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:37:47,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-12-02 15:37:47,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389923539] [2023-12-02 15:37:47,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:37:47,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:37:47,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:37:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:37:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:37:47,531 INFO L87 Difference]: Start difference. First operand 40531 states and 47823 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 15:37:53,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:53,846 INFO L93 Difference]: Finished difference Result 91422 states and 108583 transitions. [2023-12-02 15:37:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:37:53,847 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 15:37:53,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:53,951 INFO L225 Difference]: With dead ends: 91422 [2023-12-02 15:37:53,951 INFO L226 Difference]: Without dead ends: 58571 [2023-12-02 15:37:53,988 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 15:37:53,989 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 216 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:53,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 334 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:37:54,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58571 states. [2023-12-02 15:38:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58571 to 55611. [2023-12-02 15:38:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55611 states, 48341 states have (on average 1.1824538176703006) internal successors, (57161), 48590 states have internal predecessors, (57161), 3470 states have call successors, (3470), 3440 states have call predecessors, (3470), 3799 states have return successors, (4696), 3581 states have call predecessors, (4696), 3468 states have call successors, (4696) [2023-12-02 15:38:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55611 states to 55611 states and 65327 transitions. [2023-12-02 15:38:00,895 INFO L78 Accepts]: Start accepts. Automaton has 55611 states and 65327 transitions. Word has length 139 [2023-12-02 15:38:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:38:00,896 INFO L495 AbstractCegarLoop]: Abstraction has 55611 states and 65327 transitions. [2023-12-02 15:38:00,896 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 15:38:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 55611 states and 65327 transitions. [2023-12-02 15:38:00,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 15:38:00,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:38:00,912 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 15:38:00,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 15:38:01,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:38:01,112 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:38:01,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:38:01,113 INFO L85 PathProgramCache]: Analyzing trace with hash -658431971, now seen corresponding path program 1 times [2023-12-02 15:38:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:38:01,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860153577] [2023-12-02 15:38:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:38:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:01,266 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 15:38:01,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:38:01,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860153577] [2023-12-02 15:38:01,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860153577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:38:01,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:38:01,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:38:01,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049166337] [2023-12-02 15:38:01,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:38:01,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:38:01,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:38:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:38:01,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:38:01,268 INFO L87 Difference]: Start difference. First operand 55611 states and 65327 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 15:38:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:38:08,720 INFO L93 Difference]: Finished difference Result 108101 states and 126550 transitions. [2023-12-02 15:38:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:38:08,721 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 15:38:08,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:38:08,800 INFO L225 Difference]: With dead ends: 108101 [2023-12-02 15:38:08,800 INFO L226 Difference]: Without dead ends: 47376 [2023-12-02 15:38:08,846 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 15:38:08,846 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 104 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:38:08,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 457 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:38:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47376 states. [2023-12-02 15:38:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47376 to 44547. [2023-12-02 15:38:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44547 states, 38596 states have (on average 1.1665716654575604) internal successors, (45025), 38809 states have internal predecessors, (45025), 2864 states have call successors, (2864), 2826 states have call predecessors, (2864), 3086 states have return successors, (3788), 2912 states have call predecessors, (3788), 2862 states have call successors, (3788) [2023-12-02 15:38:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44547 states to 44547 states and 51677 transitions. [2023-12-02 15:38:14,142 INFO L78 Accepts]: Start accepts. Automaton has 44547 states and 51677 transitions. Word has length 140 [2023-12-02 15:38:14,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:38:14,143 INFO L495 AbstractCegarLoop]: Abstraction has 44547 states and 51677 transitions. [2023-12-02 15:38:14,143 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 15:38:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 44547 states and 51677 transitions. [2023-12-02 15:38:14,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-02 15:38:14,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:38:14,154 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 15:38:14,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-02 15:38:14,154 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:38:14,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:38:14,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1085659698, now seen corresponding path program 1 times [2023-12-02 15:38:14,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:38:14,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397619625] [2023-12-02 15:38:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:14,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:38:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:14,417 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 15:38:14,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:38:14,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397619625] [2023-12-02 15:38:14,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397619625] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:38:14,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377672040] [2023-12-02 15:38:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:14,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:38:14,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:38:14,419 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:38:14,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 15:38:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:14,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 15:38:14,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:38:15,011 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 15:38:15,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:38:15,648 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 15:38:15,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377672040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:38:15,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [226968161] [2023-12-02 15:38:15,651 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2023-12-02 15:38:15,651 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:38:15,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:38:15,652 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:38:15,652 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:38:32,273 INFO L197 IcfgInterpreter]: Interpreting procedure error2 with input of size 30 for LOIs [2023-12-02 15:38:32,276 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events2 with input of size 149 for LOIs [2023-12-02 15:38:32,452 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread2 with input of size 1 for LOIs [2023-12-02 15:38:32,463 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels2 with input of size 1 for LOIs [2023-12-02 15:38:32,464 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 46 for LOIs [2023-12-02 15:38:32,537 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads2 with input of size 1 for LOIs [2023-12-02 15:38:32,647 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events2 with input of size 158 for LOIs [2023-12-02 15:38:32,864 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:38:56,281 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2560181#(and (not (= ~token~0 (+ ~local~0 4))) (exists ((|v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_113| Int)) (and (<= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_113| 1) (<= 0 |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_113|) (not (= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_113| 0)))) (= ~m_pc~0 1) (exists ((|v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_53| Int)) (and (<= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_53| 2147483647) (not (= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_53| 0)) (<= 0 (+ |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_53| 2147483648)))) (= ~m_st~0 1))' at error location [2023-12-02 15:38:56,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:38:56,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:38:56,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 6] total 19 [2023-12-02 15:38:56,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764997390] [2023-12-02 15:38:56,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:38:56,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 15:38:56,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:38:56,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 15:38:56,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=7629, Unknown=0, NotChecked=0, Total=8190 [2023-12-02 15:38:56,284 INFO L87 Difference]: Start difference. First operand 44547 states and 51677 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 15:39:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:39:16,103 INFO L93 Difference]: Finished difference Result 84224 states and 100890 transitions. [2023-12-02 15:39:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2023-12-02 15:39:16,103 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 15:39:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:39:16,212 INFO L225 Difference]: With dead ends: 84224 [2023-12-02 15:39:16,213 INFO L226 Difference]: Without dead ends: 56759 [2023-12-02 15:39:16,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 462 SyntacticMatches, 2 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43139 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=6301, Invalid=95141, Unknown=0, NotChecked=0, Total=101442 [2023-12-02 15:39:16,256 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 3320 mSDsluCounter, 5982 mSDsCounter, 0 mSdLazyCounter, 4591 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 6830 SdHoareTripleChecker+Invalid, 5219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 4591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:39:16,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3332 Valid, 6830 Invalid, 5219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [628 Valid, 4591 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 15:39:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56759 states. [2023-12-02 15:39:21,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56759 to 36963. [2023-12-02 15:39:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36963 states, 31962 states have (on average 1.1598773543583005) internal successors, (37072), 32152 states have internal predecessors, (37072), 2396 states have call successors, (2396), 2374 states have call predecessors, (2396), 2604 states have return successors, (3217), 2437 states have call predecessors, (3217), 2394 states have call successors, (3217) [2023-12-02 15:39:21,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36963 states to 36963 states and 42685 transitions. [2023-12-02 15:39:21,224 INFO L78 Accepts]: Start accepts. Automaton has 36963 states and 42685 transitions. Word has length 145 [2023-12-02 15:39:21,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:39:21,224 INFO L495 AbstractCegarLoop]: Abstraction has 36963 states and 42685 transitions. [2023-12-02 15:39:21,224 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 15:39:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand 36963 states and 42685 transitions. [2023-12-02 15:39:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-02 15:39:21,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:39:21,234 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 15:39:21,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 15:39:21,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:39:21,435 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:39:21,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:39:21,435 INFO L85 PathProgramCache]: Analyzing trace with hash 428362385, now seen corresponding path program 1 times [2023-12-02 15:39:21,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:39:21,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010492218] [2023-12-02 15:39:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:39:21,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:39:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:39:22,316 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 15:39:22,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:39:22,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010492218] [2023-12-02 15:39:22,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010492218] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:39:22,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599329668] [2023-12-02 15:39:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:39:22,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:39:22,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:39:22,317 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:39:22,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 15:39:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:39:22,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 15:39:22,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:39:22,827 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 15:39:22,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:39:23,511 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 15:39:23,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599329668] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:39:23,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [818701956] [2023-12-02 15:39:23,514 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2023-12-02 15:39:23,515 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:39:23,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:39:23,515 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:39:23,515 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:39:58,606 INFO L197 IcfgInterpreter]: Interpreting procedure error2 with input of size 30 for LOIs [2023-12-02 15:39:58,609 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events2 with input of size 148 for LOIs [2023-12-02 15:39:58,717 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread2 with input of size 1 for LOIs [2023-12-02 15:39:58,730 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels2 with input of size 1 for LOIs [2023-12-02 15:39:58,731 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 46 for LOIs [2023-12-02 15:39:59,014 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads2 with input of size 1 for LOIs [2023-12-02 15:39:59,171 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events2 with input of size 158 for LOIs [2023-12-02 15:39:59,303 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:40:43,185 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2705649#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1) (exists ((|v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_63| Int)) (and (<= 0 (+ |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_63| 2147483648)) (<= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_63| 2147483647) (not (= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_63| 0)))) (exists ((|v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_135| Int)) (and (<= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_135| 1) (<= 0 |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_135|) (not (= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_135| 0)))))' at error location [2023-12-02 15:40:43,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:40:43,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:40:43,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 36 [2023-12-02 15:40:43,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091024753] [2023-12-02 15:40:43,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:40:43,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 15:40:43,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:40:43,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 15:40:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=11072, Unknown=0, NotChecked=0, Total=11772 [2023-12-02 15:40:43,189 INFO L87 Difference]: Start difference. First operand 36963 states and 42685 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 15:41:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:03,469 INFO L93 Difference]: Finished difference Result 114377 states and 133655 transitions. [2023-12-02 15:41:03,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-02 15:41:03,470 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 15:41:03,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:03,641 INFO L225 Difference]: With dead ends: 114377 [2023-12-02 15:41:03,641 INFO L226 Difference]: Without dead ends: 93868 [2023-12-02 15:41:03,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 378 SyntacticMatches, 2 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13750 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=3472, Invalid=34748, Unknown=0, NotChecked=0, Total=38220 [2023-12-02 15:41:03,678 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 8142 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 3631 mSolverCounterSat, 2316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8142 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 5947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2316 IncrementalHoareTripleChecker+Valid, 3631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:03,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8142 Valid, 1539 Invalid, 5947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2316 Valid, 3631 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 15:41:03,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93868 states. [2023-12-02 15:41:09,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93868 to 34753. [2023-12-02 15:41:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34753 states, 30006 states have (on average 1.1613343997867094) internal successors, (34847), 30178 states have internal predecessors, (34847), 2275 states have call successors, (2275), 2249 states have call predecessors, (2275), 2471 states have return successors, (2927), 2326 states have call predecessors, (2927), 2273 states have call successors, (2927) [2023-12-02 15:41:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34753 states to 34753 states and 40049 transitions. [2023-12-02 15:41:09,579 INFO L78 Accepts]: Start accepts. Automaton has 34753 states and 40049 transitions. Word has length 147 [2023-12-02 15:41:09,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:09,580 INFO L495 AbstractCegarLoop]: Abstraction has 34753 states and 40049 transitions. [2023-12-02 15:41:09,580 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 15:41:09,580 INFO L276 IsEmpty]: Start isEmpty. Operand 34753 states and 40049 transitions. [2023-12-02 15:41:09,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-02 15:41:09,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:09,588 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 15:41:09,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 15:41:09,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:41:09,788 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:09,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash 418431523, now seen corresponding path program 1 times [2023-12-02 15:41:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:09,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551644286] [2023-12-02 15:41:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:09,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:10,367 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 15:41:10,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:10,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551644286] [2023-12-02 15:41:10,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551644286] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:41:10,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716786478] [2023-12-02 15:41:10,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:10,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:41:10,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:41:10,369 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:41:10,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 15:41:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:10,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 15:41:10,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:10,866 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 15:41:10,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:11,539 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 15:41:11,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716786478] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:41:11,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1365307485] [2023-12-02 15:41:11,542 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2023-12-02 15:41:11,542 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:41:11,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:41:11,542 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:41:11,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:41:41,335 INFO L197 IcfgInterpreter]: Interpreting procedure error2 with input of size 30 for LOIs [2023-12-02 15:41:41,338 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events2 with input of size 148 for LOIs [2023-12-02 15:41:41,443 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread2 with input of size 1 for LOIs [2023-12-02 15:41:41,453 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels2 with input of size 1 for LOIs [2023-12-02 15:41:41,454 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 46 for LOIs [2023-12-02 15:41:41,673 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads2 with input of size 1 for LOIs [2023-12-02 15:41:41,808 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events2 with input of size 158 for LOIs [2023-12-02 15:41:41,937 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:42:15,978 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2883043#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (exists ((|v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_73| Int)) (and (<= 0 (+ |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_73| 2147483648)) (<= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_73| 2147483647) (not (= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_BEFORE_CALL_73| 0)))) (= ~m_st~0 1) (exists ((|v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_157| Int)) (and (not (= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_157| 0)) (<= 0 |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_157|) (<= |v_ULTIMATE.start_eval2_~tmp~5#1_BEFORE_CALL_157| 1))))' at error location [2023-12-02 15:42:15,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:42:15,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:42:15,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 33 [2023-12-02 15:42:15,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477828557] [2023-12-02 15:42:15,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:42:15,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 15:42:15,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:15,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 15:42:15,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=10458, Unknown=0, NotChecked=0, Total=11130 [2023-12-02 15:42:15,982 INFO L87 Difference]: Start difference. First operand 34753 states and 40049 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 15:42:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:36,587 INFO L93 Difference]: Finished difference Result 107191 states and 125999 transitions. [2023-12-02 15:42:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-02 15:42:36,588 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 15:42:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:36,736 INFO L225 Difference]: With dead ends: 107191 [2023-12-02 15:42:36,736 INFO L226 Difference]: Without dead ends: 80787 [2023-12-02 15:42:36,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 379 SyntacticMatches, 2 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12700 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=2906, Invalid=31504, Unknown=0, NotChecked=0, Total=34410 [2023-12-02 15:42:36,780 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 5533 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 4382 mSolverCounterSat, 1717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5542 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 6099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1717 IncrementalHoareTripleChecker+Valid, 4382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:36,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5542 Valid, 2188 Invalid, 6099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1717 Valid, 4382 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 15:42:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80787 states. [2023-12-02 15:42:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80787 to 34587. [2023-12-02 15:42:42,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34587 states, 29803 states have (on average 1.162936617119082) internal successors, (34659), 29974 states have internal predecessors, (34659), 2319 states have call successors, (2319), 2295 states have call predecessors, (2319), 2464 states have return successors, (2913), 2318 states have call predecessors, (2913), 2317 states have call successors, (2913) [2023-12-02 15:42:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34587 states to 34587 states and 39891 transitions. [2023-12-02 15:42:42,723 INFO L78 Accepts]: Start accepts. Automaton has 34587 states and 39891 transitions. Word has length 149 [2023-12-02 15:42:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:42,723 INFO L495 AbstractCegarLoop]: Abstraction has 34587 states and 39891 transitions. [2023-12-02 15:42:42,723 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 15:42:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 34587 states and 39891 transitions. [2023-12-02 15:42:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-02 15:42:42,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:42,733 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 15:42:42,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-02 15:42:42,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-02 15:42:42,934 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:42,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1590619252, now seen corresponding path program 1 times [2023-12-02 15:42:42,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:42,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044110968] [2023-12-02 15:42:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:42,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:43,104 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 15:42:43,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:43,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044110968] [2023-12-02 15:42:43,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044110968] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:42:43,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430892208] [2023-12-02 15:42:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:43,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:43,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:43,106 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:43,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 15:42:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:43,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 15:42:43,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:43,325 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 15:42:43,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:42:43,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430892208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:43,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:42:43,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 15:42:43,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958568693] [2023-12-02 15:42:43,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:43,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:42:43,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:43,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:42:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:42:43,327 INFO L87 Difference]: Start difference. First operand 34587 states and 39891 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 15:42:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:47,732 INFO L93 Difference]: Finished difference Result 56762 states and 65493 transitions. [2023-12-02 15:42:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:42:47,732 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 15:42:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:47,771 INFO L225 Difference]: With dead ends: 56762 [2023-12-02 15:42:47,771 INFO L226 Difference]: Without dead ends: 24661 [2023-12-02 15:42:47,792 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 15:42:47,792 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 270 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:47,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 434 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:42:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24661 states. [2023-12-02 15:42:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24661 to 21351. [2023-12-02 15:42:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21351 states, 18355 states have (on average 1.134459275401798) internal successors, (20823), 18472 states have internal predecessors, (20823), 1442 states have call successors, (1442), 1418 states have call predecessors, (1442), 1553 states have return successors, (1870), 1461 states have call predecessors, (1870), 1440 states have call successors, (1870) [2023-12-02 15:42:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21351 states to 21351 states and 24135 transitions. [2023-12-02 15:42:51,410 INFO L78 Accepts]: Start accepts. Automaton has 21351 states and 24135 transitions. Word has length 171 [2023-12-02 15:42:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:51,410 INFO L495 AbstractCegarLoop]: Abstraction has 21351 states and 24135 transitions. [2023-12-02 15:42:51,410 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 15:42:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 21351 states and 24135 transitions. [2023-12-02 15:42:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-02 15:42:51,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:51,418 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 15:42:51,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 15:42:51,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-02 15:42:51,618 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:51,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:51,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1331749358, now seen corresponding path program 1 times [2023-12-02 15:42:51,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:51,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137046799] [2023-12-02 15:42:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:51,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:51,813 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 15:42:51,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:51,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137046799] [2023-12-02 15:42:51,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137046799] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:42:51,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584696455] [2023-12-02 15:42:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:51,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:51,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:51,815 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:51,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 15:42:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:51,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 15:42:51,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:52,062 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 15:42:52,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:42:52,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584696455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:52,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:42:52,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 15:42:52,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468784188] [2023-12-02 15:42:52,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:52,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:42:52,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:42:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:42:52,064 INFO L87 Difference]: Start difference. First operand 21351 states and 24135 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 15:42:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:56,161 INFO L93 Difference]: Finished difference Result 40392 states and 45721 transitions. [2023-12-02 15:42:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:42:56,161 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 15:42:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:56,198 INFO L225 Difference]: With dead ends: 40392 [2023-12-02 15:42:56,198 INFO L226 Difference]: Without dead ends: 20845 [2023-12-02 15:42:56,221 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 15:42:56,222 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 278 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:56,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 525 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:42:56,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20845 states. [2023-12-02 15:42:59,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20845 to 19207. [2023-12-02 15:42:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19207 states, 16431 states have (on average 1.1241555596129267) internal successors, (18471), 16542 states have internal predecessors, (18471), 1350 states have call successors, (1350), 1308 states have call predecessors, (1350), 1425 states have return successors, (1772), 1357 states have call predecessors, (1772), 1348 states have call successors, (1772) [2023-12-02 15:42:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19207 states to 19207 states and 21593 transitions. [2023-12-02 15:42:59,773 INFO L78 Accepts]: Start accepts. Automaton has 19207 states and 21593 transitions. Word has length 204 [2023-12-02 15:42:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:59,773 INFO L495 AbstractCegarLoop]: Abstraction has 19207 states and 21593 transitions. [2023-12-02 15:42:59,773 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 15:42:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 19207 states and 21593 transitions. [2023-12-02 15:42:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-02 15:42:59,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:59,779 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 15:42:59,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 15:42:59,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 15:42:59,980 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:59,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:59,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2001652773, now seen corresponding path program 1 times [2023-12-02 15:42:59,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:59,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000855905] [2023-12-02 15:42:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:59,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:43:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:43:00,253 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 15:43:00,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:43:00,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000855905] [2023-12-02 15:43:00,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000855905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:43:00,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:43:00,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 15:43:00,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068554874] [2023-12-02 15:43:00,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:43:00,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:43:00,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:43:00,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:43:00,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:43:00,256 INFO L87 Difference]: Start difference. First operand 19207 states and 21593 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 15:43:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:10,399 INFO L93 Difference]: Finished difference Result 58804 states and 66374 transitions. [2023-12-02 15:43:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:43:10,400 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 15:43:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:10,498 INFO L225 Difference]: With dead ends: 58804 [2023-12-02 15:43:10,498 INFO L226 Difference]: Without dead ends: 46564 [2023-12-02 15:43:10,519 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 15:43:10,520 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 570 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:10,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 2092 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:43:10,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46564 states. [2023-12-02 15:43:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46564 to 36883. [2023-12-02 15:43:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36883 states, 31422 states have (on average 1.1275857679332952) internal successors, (35431), 31652 states have internal predecessors, (35431), 2616 states have call successors, (2616), 2515 states have call predecessors, (2616), 2844 states have return successors, (3484), 2716 states have call predecessors, (3484), 2614 states have call successors, (3484) [2023-12-02 15:43:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36883 states to 36883 states and 41531 transitions. [2023-12-02 15:43:17,785 INFO L78 Accepts]: Start accepts. Automaton has 36883 states and 41531 transitions. Word has length 238 [2023-12-02 15:43:17,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:17,785 INFO L495 AbstractCegarLoop]: Abstraction has 36883 states and 41531 transitions. [2023-12-02 15:43:17,786 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 15:43:17,786 INFO L276 IsEmpty]: Start isEmpty. Operand 36883 states and 41531 transitions. [2023-12-02 15:43:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-02 15:43:17,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:17,794 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 15:43:17,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-02 15:43:17,794 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:43:17,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:17,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1717674648, now seen corresponding path program 1 times [2023-12-02 15:43:17,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:43:17,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579906000] [2023-12-02 15:43:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:17,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:43:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:43:17,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:43:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:43:18,046 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:43:18,047 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:43:18,047 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 15:43:18,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 15:43:18,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-02 15:43:18,052 INFO L445 BasicCegarLoop]: Path program histogram: [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 15:43:18,058 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:43:18,181 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated [2023-12-02 15:43:18,187 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated [2023-12-02 15:43:18,215 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated [2023-12-02 15:43:18,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:43:18 BoogieIcfgContainer [2023-12-02 15:43:18,265 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:43:18,265 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:43:18,266 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:43:18,266 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:43:18,266 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:59" (3/4) ... [2023-12-02 15:43:18,267 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 15:43:18,323 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated [2023-12-02 15:43:18,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated [2023-12-02 15:43:18,348 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated [2023-12-02 15:43:18,498 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:43:18,499 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:43:18,499 INFO L158 Benchmark]: Toolchain (without parser) took 620452.83ms. Allocated memory was 148.9MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 102.6MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 5.1GB. Max. memory is 16.1GB. [2023-12-02 15:43:18,499 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 148.9MB. Free memory was 119.1MB in the beginning and 119.0MB in the end (delta: 34.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:43:18,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.34ms. Allocated memory is still 148.9MB. Free memory was 102.1MB in the beginning and 81.6MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 15:43:18,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.29ms. Allocated memory is still 148.9MB. Free memory was 81.6MB in the beginning and 78.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:43:18,500 INFO L158 Benchmark]: Boogie Preprocessor took 48.69ms. Allocated memory is still 148.9MB. Free memory was 78.5MB in the beginning and 75.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:43:18,501 INFO L158 Benchmark]: RCFGBuilder took 1007.60ms. Allocated memory was 148.9MB in the beginning and 182.5MB in the end (delta: 33.6MB). Free memory was 74.8MB in the beginning and 145.8MB in the end (delta: -71.0MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2023-12-02 15:43:18,501 INFO L158 Benchmark]: TraceAbstraction took 618660.37ms. Allocated memory was 182.5MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 144.8MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 5.1GB. Max. memory is 16.1GB. [2023-12-02 15:43:18,502 INFO L158 Benchmark]: Witness Printer took 233.12ms. Allocated memory is still 6.3GB. Free memory was 1.2GB in the beginning and 1.1GB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-12-02 15:43:18,503 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 148.9MB. Free memory was 119.1MB in the beginning and 119.0MB in the end (delta: 34.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.34ms. Allocated memory is still 148.9MB. Free memory was 102.1MB in the beginning and 81.6MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.29ms. Allocated memory is still 148.9MB. Free memory was 81.6MB in the beginning and 78.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.69ms. Allocated memory is still 148.9MB. Free memory was 78.5MB in the beginning and 75.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1007.60ms. Allocated memory was 148.9MB in the beginning and 182.5MB in the end (delta: 33.6MB). Free memory was 74.8MB in the beginning and 145.8MB in the end (delta: -71.0MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * TraceAbstraction took 618660.37ms. Allocated memory was 182.5MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 144.8MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 5.1GB. Max. memory is 16.1GB. * Witness Printer took 233.12ms. Allocated memory is still 6.3GB. Free memory was 1.2GB in the beginning and 1.1GB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret22 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: 599]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int fast_clk_edge ; [L33] int slow_clk_edge ; [L34] int q_buf_0 ; [L35] int q_free ; [L36] int q_read_ev ; [L37] int q_write_ev ; [L38] int q_req_up ; [L39] int q_ev ; [L60] int p_num_write ; [L61] int p_last_write ; [L62] int p_dw_st ; [L63] int p_dw_pc ; [L64] int p_dw_i ; [L65] int c_num_read ; [L66] int c_last_read ; [L67] int c_dr_st ; [L68] int c_dr_pc ; [L69] int c_dr_i ; [L202] static int a_t ; [L352] static int t = 0; [L603] int m_pc = 0; [L604] int t1_pc = 0; [L605] int t2_pc = 0; [L606] int t3_pc = 0; [L607] int t4_pc = 0; [L608] int m_st ; [L609] int t1_st ; [L610] int t2_st ; [L611] int t3_st ; [L612] int t4_st ; [L613] int m_i ; [L614] int t1_i ; [L615] int t2_i ; [L616] int t3_i ; [L617] int t4_i ; [L618] int M_E = 2; [L619] int T1_E = 2; [L620] int T2_E = 2; [L621] int T3_E = 2; [L622] int T4_E = 2; [L623] int E_M = 2; [L624] int E_1 = 2; [L625] int E_2 = 2; [L626] int E_3 = 2; [L627] int E_4 = 2; [L634] int token ; [L636] int local ; [L1452] COND FALSE !(__VERIFIER_nondet_int()) [L1455] CALL main2() [L1439] int __retres1 ; [L1443] CALL init_model2() [L1351] m_i = 1 [L1352] t1_i = 1 [L1353] t2_i = 1 [L1354] t3_i = 1 [L1355] t4_i = 1 [L1443] RET init_model2() [L1444] CALL start_simulation2() [L1380] int kernel_st ; [L1381] int tmp ; [L1382] int tmp___0 ; [L1386] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1387] FCALL update_channels2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1388] CALL init_threads2() [L944] COND TRUE m_i == 1 [L945] m_st = 0 [L949] COND TRUE t1_i == 1 [L950] t1_st = 0 [L954] COND TRUE t2_i == 1 [L955] t2_st = 0 [L959] COND TRUE t3_i == 1 [L960] t3_st = 0 [L964] COND TRUE t4_i == 1 [L965] t4_st = 0 [L1388] RET init_threads2() [L1389] CALL fire_delta_events2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1105] COND FALSE !(M_E == 0) [L1110] COND FALSE !(T1_E == 0) [L1115] COND FALSE !(T2_E == 0) [L1120] COND FALSE !(T3_E == 0) [L1125] COND FALSE !(T4_E == 0) [L1130] COND FALSE !(E_M == 0) [L1135] COND FALSE !(E_1 == 0) [L1140] COND FALSE !(E_2 == 0) [L1145] COND FALSE !(E_3 == 0) [L1150] COND FALSE !(E_4 == 0) [L1389] RET fire_delta_events2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1390] CALL activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1218] int tmp ; [L1219] int tmp___0 ; [L1220] int tmp___1 ; [L1221] int tmp___2 ; [L1222] int tmp___3 ; [L1226] CALL, EXPR is_master_triggered() [L838] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L841] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L851] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L853] return (__retres1); [L1226] RET, EXPR is_master_triggered() [L1226] tmp = is_master_triggered() [L1228] COND FALSE !(\read(tmp)) [L1234] CALL, EXPR is_transmit1_triggered() [L857] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L860] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L870] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L872] return (__retres1); [L1234] RET, EXPR is_transmit1_triggered() [L1234] tmp___0 = is_transmit1_triggered() [L1236] COND FALSE !(\read(tmp___0)) [L1242] CALL, EXPR is_transmit2_triggered() [L876] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L879] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L889] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L891] return (__retres1); [L1242] RET, EXPR is_transmit2_triggered() [L1242] tmp___1 = is_transmit2_triggered() [L1244] COND FALSE !(\read(tmp___1)) [L1250] CALL, EXPR is_transmit3_triggered() [L895] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L898] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L908] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L910] return (__retres1); [L1250] RET, EXPR is_transmit3_triggered() [L1250] tmp___2 = is_transmit3_triggered() [L1252] COND FALSE !(\read(tmp___2)) [L1258] CALL, EXPR is_transmit4_triggered() [L914] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L917] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L927] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L929] return (__retres1); [L1258] RET, EXPR is_transmit4_triggered() [L1258] tmp___3 = is_transmit4_triggered() [L1260] COND FALSE !(\read(tmp___3)) [L1390] RET activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1391] CALL reset_delta_events2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1163] COND FALSE !(M_E == 1) [L1168] COND FALSE !(T1_E == 1) [L1173] COND FALSE !(T2_E == 1) [L1178] COND FALSE !(T3_E == 1) [L1183] COND FALSE !(T4_E == 1) [L1188] COND FALSE !(E_M == 1) [L1193] COND FALSE !(E_1 == 1) [L1198] COND FALSE !(E_2 == 1) [L1203] COND FALSE !(E_3 == 1) [L1208] COND FALSE !(E_4 == 1) [L1391] RET reset_delta_events2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1394] COND TRUE 1 [L1397] kernel_st = 1 [L1398] CALL eval2() [L1010] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1014] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1017] CALL, EXPR exists_runnable_thread2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L974] int __retres1 ; [L977] COND TRUE m_st == 0 [L978] __retres1 = 1 [L1005] return (__retres1); [L1017] RET, EXPR exists_runnable_thread2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1017] tmp = exists_runnable_thread2() [L1019] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=0] [L1024] COND TRUE m_st == 0 [L1025] int tmp_ndt_1; [L1026] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L1027] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, tmp_ndt_1=0, token=0] [L1024-L1035] { 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=0] [L1038] COND TRUE t1_st == 0 [L1039] int tmp_ndt_2; [L1040] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L1041] COND TRUE, EXPR \read(tmp_ndt_2) [L1043] EXPR t1_st = 1 [L1044] CALL, EXPR transmit1() [L697] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L708] COND TRUE 1 [L710] t1_pc = 1 [L711] t1_st = 2 [L1044] RET, EXPR transmit1() [L1038-L1049] { 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=0] [L1052] COND TRUE t2_st == 0 [L1053] int tmp_ndt_3; [L1054] EXPR tmp_ndt_3 = __VERIFIER_nondet_int() [L1055] COND TRUE, EXPR \read(tmp_ndt_3) [L1057] EXPR t2_st = 1 [L1058] CALL, EXPR transmit2() [L733] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L744] COND TRUE 1 [L746] t2_pc = 1 [L747] t2_st = 2 [L1058] RET, EXPR transmit2() [L1052-L1063] { 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=0] [L1066] COND TRUE t3_st == 0 [L1067] int tmp_ndt_4; [L1068] EXPR tmp_ndt_4 = __VERIFIER_nondet_int() [L1069] COND TRUE, EXPR \read(tmp_ndt_4) [L1071] EXPR t3_st = 1 [L1072] CALL, EXPR transmit3() [L769] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L780] COND TRUE 1 [L782] t3_pc = 1 [L783] t3_st = 2 [L1072] RET, EXPR transmit3() [L1066-L1077] { 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=0] [L1080] COND TRUE t4_st == 0 [L1081] int tmp_ndt_5; [L1082] EXPR tmp_ndt_5 = __VERIFIER_nondet_int() [L1083] COND TRUE, EXPR \read(tmp_ndt_5) [L1085] EXPR t4_st = 1 [L1086] CALL, EXPR transmit4() [L805] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L816] COND TRUE 1 [L818] t4_pc = 1 [L819] t4_st = 2 [L1086] RET, EXPR transmit4() [L1080-L1091] { 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=0] [L1014] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=0] [L1017] CALL, EXPR exists_runnable_thread2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L974] int __retres1 ; [L977] COND TRUE m_st == 0 [L978] __retres1 = 1 [L1005] return (__retres1); [L1017] RET, EXPR exists_runnable_thread2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=0] [L1017] tmp = exists_runnable_thread2() [L1019] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=0] [L1024] COND TRUE m_st == 0 [L1025] int tmp_ndt_1; [L1026] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L1027] COND TRUE, EXPR \read(tmp_ndt_1) [L1029] EXPR m_st = 1 [L1030] CALL, EXPR master() [L639] int tmp_var = __VERIFIER_nondet_int(); [L641] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp_var=0, token=0] [L652] COND TRUE 1 [L655] token = __VERIFIER_nondet_int() [L656] local = token [L657] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp_var=0, token=0] [L658] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1274] CALL activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L1218] int tmp ; [L1219] int tmp___0 ; [L1220] int tmp___1 ; [L1221] int tmp___2 ; [L1222] int tmp___3 ; [L1226] CALL, EXPR is_master_triggered() [L838] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L841] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L851] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L853] return (__retres1); [L1226] RET, EXPR is_master_triggered() [L1226] tmp = is_master_triggered() [L1228] COND FALSE !(\read(tmp)) [L1234] CALL, EXPR is_transmit1_triggered() [L857] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L860] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L861] COND TRUE E_1 == 1 [L862] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=0] [L872] return (__retres1); [L1234] RET, EXPR is_transmit1_triggered() [L1234] tmp___0 = is_transmit1_triggered() [L1236] COND TRUE \read(tmp___0) [L1237] t1_st = 0 [L1242] CALL, EXPR is_transmit2_triggered() [L876] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L879] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L880] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L889] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L891] return (__retres1); [L1242] RET, EXPR is_transmit2_triggered() [L1242] tmp___1 = is_transmit2_triggered() [L1244] COND FALSE !(\read(tmp___1)) [L1250] CALL, EXPR is_transmit3_triggered() [L895] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L898] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L899] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L908] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L910] return (__retres1); [L1250] RET, EXPR is_transmit3_triggered() [L1250] tmp___2 = is_transmit3_triggered() [L1252] COND FALSE !(\read(tmp___2)) [L1258] CALL, EXPR is_transmit4_triggered() [L914] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L917] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L918] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L927] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L929] return (__retres1); [L1258] RET, EXPR is_transmit4_triggered() [L1258] tmp___3 = is_transmit4_triggered() [L1260] COND FALSE !(\read(tmp___3)) [L1274] RET activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L658] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=0, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, tmp_var=0, token=0] [L659] E_1 = 2 [L660] m_pc = 1 [L661] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, tmp_var=0, token=0] [L1030] RET, EXPR master() [L1024-L1035] { 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, tmp=1, token=0] [L1038] COND TRUE t1_st == 0 [L1039] int tmp_ndt_2; [L1040] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L1041] COND TRUE, EXPR \read(tmp_ndt_2) [L1043] EXPR t1_st = 1 [L1044] CALL, EXPR transmit1() [L697] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=0] [L700] COND TRUE t1_pc == 1 [L716] token += 1 [L717] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L718] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L1274] CALL activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L1218] int tmp ; [L1219] int tmp___0 ; [L1220] int tmp___1 ; [L1221] int tmp___2 ; [L1222] int tmp___3 ; [L1226] CALL, EXPR is_master_triggered() [L838] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L841] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L842] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L851] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L853] return (__retres1); [L1226] RET, EXPR is_master_triggered() [L1226] tmp = is_master_triggered() [L1228] COND FALSE !(\read(tmp)) [L1234] CALL, EXPR is_transmit1_triggered() [L857] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L860] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L861] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L870] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L872] return (__retres1); [L1234] RET, EXPR is_transmit1_triggered() [L1234] tmp___0 = is_transmit1_triggered() [L1236] COND FALSE !(\read(tmp___0)) [L1242] CALL, EXPR is_transmit2_triggered() [L876] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L879] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L880] COND TRUE E_2 == 1 [L881] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L891] return (__retres1); [L1242] RET, EXPR is_transmit2_triggered() [L1242] tmp___1 = is_transmit2_triggered() [L1244] COND TRUE \read(tmp___1) [L1245] t2_st = 0 [L1250] CALL, EXPR is_transmit3_triggered() [L895] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L898] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L899] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L908] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L910] return (__retres1); [L1250] RET, EXPR is_transmit3_triggered() [L1250] tmp___2 = is_transmit3_triggered() [L1252] COND FALSE !(\read(tmp___2)) [L1258] CALL, EXPR is_transmit4_triggered() [L914] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L917] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L918] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L927] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L929] return (__retres1); [L1258] RET, EXPR is_transmit4_triggered() [L1258] tmp___3 = is_transmit4_triggered() [L1260] COND FALSE !(\read(tmp___3)) [L1274] RET activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L718] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L719] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L708] COND TRUE 1 [L710] t1_pc = 1 [L711] t1_st = 2 [L1044] RET, EXPR transmit1() [L1038-L1049] { 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, tmp=1, token=1] [L1052] COND TRUE t2_st == 0 [L1053] int tmp_ndt_3; [L1054] EXPR tmp_ndt_3 = __VERIFIER_nondet_int() [L1055] COND TRUE, EXPR \read(tmp_ndt_3) [L1057] EXPR t2_st = 1 [L1058] CALL, EXPR transmit2() [L733] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=1] [L736] COND TRUE t2_pc == 1 [L752] token += 1 [L753] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L754] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L1274] CALL activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L1218] int tmp ; [L1219] int tmp___0 ; [L1220] int tmp___1 ; [L1221] int tmp___2 ; [L1222] int tmp___3 ; [L1226] CALL, EXPR is_master_triggered() [L838] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L841] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L842] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L851] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L853] return (__retres1); [L1226] RET, EXPR is_master_triggered() [L1226] tmp = is_master_triggered() [L1228] COND FALSE !(\read(tmp)) [L1234] CALL, EXPR is_transmit1_triggered() [L857] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L860] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L861] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L870] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L872] return (__retres1); [L1234] RET, EXPR is_transmit1_triggered() [L1234] tmp___0 = is_transmit1_triggered() [L1236] COND FALSE !(\read(tmp___0)) [L1242] CALL, EXPR is_transmit2_triggered() [L876] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L879] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L880] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L889] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L891] return (__retres1); [L1242] RET, EXPR is_transmit2_triggered() [L1242] tmp___1 = is_transmit2_triggered() [L1244] COND FALSE !(\read(tmp___1)) [L1250] CALL, EXPR is_transmit3_triggered() [L895] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L898] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L899] COND TRUE E_3 == 1 [L900] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L910] return (__retres1); [L1250] RET, EXPR is_transmit3_triggered() [L1250] tmp___2 = is_transmit3_triggered() [L1252] COND TRUE \read(tmp___2) [L1253] t3_st = 0 [L1258] CALL, EXPR is_transmit4_triggered() [L914] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L917] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L918] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L927] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L929] return (__retres1); [L1258] RET, EXPR is_transmit4_triggered() [L1258] tmp___3 = is_transmit4_triggered() [L1260] COND FALSE !(\read(tmp___3)) [L1274] RET activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L754] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L755] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=0, 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, t=0, token=2] [L744] COND TRUE 1 [L746] t2_pc = 1 [L747] t2_st = 2 [L1058] RET, EXPR transmit2() [L1052-L1063] { 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=0, t4_i=1, t4_pc=1, t4_st=2, t=0, tmp=1, token=2] [L1066] COND TRUE t3_st == 0 [L1067] int tmp_ndt_4; [L1068] EXPR tmp_ndt_4 = __VERIFIER_nondet_int() [L1069] COND TRUE, EXPR \read(tmp_ndt_4) [L1071] EXPR t3_st = 1 [L1072] CALL, EXPR transmit3() [L769] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=2] [L772] COND TRUE t3_pc == 1 [L788] token += 1 [L789] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L790] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L1274] CALL activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L1218] int tmp ; [L1219] int tmp___0 ; [L1220] int tmp___1 ; [L1221] int tmp___2 ; [L1222] int tmp___3 ; [L1226] CALL, EXPR is_master_triggered() [L838] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L841] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L842] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L851] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L853] return (__retres1); [L1226] RET, EXPR is_master_triggered() [L1226] tmp = is_master_triggered() [L1228] COND FALSE !(\read(tmp)) [L1234] CALL, EXPR is_transmit1_triggered() [L857] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L860] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L861] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L870] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L872] return (__retres1); [L1234] RET, EXPR is_transmit1_triggered() [L1234] tmp___0 = is_transmit1_triggered() [L1236] COND FALSE !(\read(tmp___0)) [L1242] CALL, EXPR is_transmit2_triggered() [L876] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L879] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L880] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L889] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L891] return (__retres1); [L1242] RET, EXPR is_transmit2_triggered() [L1242] tmp___1 = is_transmit2_triggered() [L1244] COND FALSE !(\read(tmp___1)) [L1250] CALL, EXPR is_transmit3_triggered() [L895] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L898] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L899] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L908] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L910] return (__retres1); [L1250] RET, EXPR is_transmit3_triggered() [L1250] tmp___2 = is_transmit3_triggered() [L1252] COND FALSE !(\read(tmp___2)) [L1258] CALL, EXPR is_transmit4_triggered() [L914] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L917] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L918] COND TRUE E_4 == 1 [L919] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=2, t=0, token=3] [L929] return (__retres1); [L1258] RET, EXPR is_transmit4_triggered() [L1258] tmp___3 = is_transmit4_triggered() [L1260] COND TRUE \read(tmp___3) [L1261] t4_st = 0 [L1274] RET activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=0, t=0, token=3] [L790] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=0, t=0, token=3] [L791] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=1, t4_i=1, t4_pc=1, t4_st=0, t=0, token=3] [L780] COND TRUE 1 [L782] t3_pc = 1 [L783] t3_st = 2 [L1072] RET, EXPR transmit3() [L1066-L1077] { 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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=0, t=0, tmp=1, token=3] [L1080] COND TRUE t4_st == 0 [L1081] int tmp_ndt_5; [L1082] EXPR tmp_ndt_5 = __VERIFIER_nondet_int() [L1083] COND TRUE, EXPR \read(tmp_ndt_5) [L1085] EXPR t4_st = 1 [L1086] CALL, EXPR transmit4() [L805] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=3] [L808] COND TRUE t4_pc == 1 [L824] token += 1 [L825] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L826] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L1274] CALL activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L1218] int tmp ; [L1219] int tmp___0 ; [L1220] int tmp___1 ; [L1221] int tmp___2 ; [L1222] int tmp___3 ; [L1226] CALL, EXPR is_master_triggered() [L838] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L841] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L842] COND TRUE E_M == 1 [L843] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=2, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L853] return (__retres1); [L1226] RET, EXPR is_master_triggered() [L1226] tmp = is_master_triggered() [L1228] COND TRUE \read(tmp) [L1229] m_st = 0 [L1234] CALL, EXPR is_transmit1_triggered() [L857] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L860] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L861] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L870] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L872] return (__retres1); [L1234] RET, EXPR is_transmit1_triggered() [L1234] tmp___0 = is_transmit1_triggered() [L1236] COND FALSE !(\read(tmp___0)) [L1242] CALL, EXPR is_transmit2_triggered() [L876] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L879] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L880] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L889] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L891] return (__retres1); [L1242] RET, EXPR is_transmit2_triggered() [L1242] tmp___1 = is_transmit2_triggered() [L1244] COND FALSE !(\read(tmp___1)) [L1250] CALL, EXPR is_transmit3_triggered() [L895] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L898] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L899] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L908] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L910] return (__retres1); [L1250] RET, EXPR is_transmit3_triggered() [L1250] tmp___2 = is_transmit3_triggered() [L1252] COND FALSE !(\read(tmp___2)) [L1258] CALL, EXPR is_transmit4_triggered() [L914] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L917] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L918] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L927] __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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L929] return (__retres1); [L1258] RET, EXPR is_transmit4_triggered() [L1258] tmp___3 = is_transmit4_triggered() [L1260] COND FALSE !(\read(tmp___3)) [L1274] RET activate_threads2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L826] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L827] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L816] COND TRUE 1 [L818] t4_pc = 1 [L819] t4_st = 2 [L1086] RET, EXPR transmit4() [L1080-L1091] { 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=4] [L1014] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=4] [L1017] CALL, EXPR exists_runnable_thread2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L974] int __retres1 ; [L977] COND TRUE m_st == 0 [L978] __retres1 = 1 [L1005] return (__retres1); [L1017] RET, EXPR exists_runnable_thread2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=4] [L1017] tmp = exists_runnable_thread2() [L1019] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp=1, token=4] [L1024] COND TRUE m_st == 0 [L1025] int tmp_ndt_1; [L1026] tmp_ndt_1 = __VERIFIER_nondet_int() [L1027] COND TRUE \read(tmp_ndt_1) [L1029] m_st = 1 [L1030] CALL master() [L639] int tmp_var = __VERIFIER_nondet_int(); [L641] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp_var=5, token=4] [L644] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp_var=5, token=4] [L666] COND FALSE !(token != local + 4) [L671] COND TRUE tmp_var <= 5 [L672] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp_var=5, token=4] [L677] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp_var=5, token=4] [L678] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp_var=5, token=4] [L679] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, tmp_var=5, token=4] [L680] CALL error2() 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] [L599] 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, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, fast_clk_edge=0, local=0, m_i=1, m_pc=1, m_st=1, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0, slow_clk_edge=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, t=0, token=4] - UnprovableResult [Line: 27]: 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 16 procedures, 190 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 618.4s, OverallIterations: 41, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.6s, AutomataDifference: 184.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35309 SdHoareTripleChecker+Valid, 23.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35131 mSDsluCounter, 44921 SdHoareTripleChecker+Invalid, 19.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34492 mSDsCounter, 8099 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29695 IncrementalHoareTripleChecker+Invalid, 37794 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8099 mSolverCounterUnsat, 10429 mSDtfsCounter, 29695 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7943 GetRequests, 6155 SyntacticMatches, 12 SemanticMatches, 1776 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178522 ImplicationChecksByTransitivity, 196.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55611occurred in iteration=33, InterpolantAutomatonStates: 1211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 97.6s AutomataMinimizationTime, 40 MinimizatonAttempts, 266469 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 14.8s InterpolantComputationTime, 9385 NumberOfCodeBlocks, 9337 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 10049 ConstructedInterpolants, 0 QuantifiedInterpolants, 20314 SizeOfPredicates, 58 NumberOfNonLiveVariables, 21314 ConjunctsInSsa, 313 ConjunctsInUnsatCore, 78 InterpolantComputations, 33 PerfectInterpolantSequences, 5873/6741 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 15:43:18,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc4217a-e5b8-459b-a605-65dbae95c888/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