./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.04.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.04.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 16:10:53,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:10:53,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:10:53,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:10:53,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:10:53,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:10:53,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:10:53,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:10:53,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:10:53,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:10:53,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:10:53,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:10:53,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:10:53,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:10:53,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:10:53,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:10:53,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:10:53,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:10:53,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:10:53,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:10:53,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:10:53,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:10:53,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:10:53,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:10:53,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:10:53,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:10:53,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:10:53,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:10:53,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:10:53,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:10:53,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:10:53,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:10:53,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:10:53,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:10:53,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:10:53,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:10:53,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:10:53,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:10:53,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:10:53,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:10:53,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:10:53,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 16:10:53,566 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:10:53,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:10:53,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:10:53,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:10:53,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:10:53,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:10:53,568 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:10:53,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:10:53,568 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:10:53,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 16:10:53,569 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:10:53,569 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:10:53,569 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 16:10:53,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 16:10:53,569 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:10:53,569 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 16:10:53,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 16:10:53,570 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 16:10:53,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:10:53,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:10:53,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:10:53,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:10:53,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:10:53,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:10:53,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:10:53,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:10:53,572 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:10:53,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:10:53,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:10:53,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:10:53,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:10:53,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:10:53,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:10:53,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:10:53,573 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 16:10:53,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:10:53,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:10:53,574 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 16:10:53,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:10:53,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:10:53,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:10:53,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa [2022-12-14 16:10:53,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:10:53,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:10:53,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:10:53,772 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:10:53,773 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:10:53,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/systemc/transmitter.04.cil.c [2022-12-14 16:10:56,378 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:10:56,518 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:10:56,518 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/sv-benchmarks/c/systemc/transmitter.04.cil.c [2022-12-14 16:10:56,527 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/data/954b01b43/c0fe7076031c404da5eb8bb5375e7590/FLAGf5a0ea9d4 [2022-12-14 16:10:56,539 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/data/954b01b43/c0fe7076031c404da5eb8bb5375e7590 [2022-12-14 16:10:56,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:10:56,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:10:56,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:10:56,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:10:56,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:10:56,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412b252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56, skipping insertion in model container [2022-12-14 16:10:56,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:10:56,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:10:56,667 WARN L237 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_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/sv-benchmarks/c/systemc/transmitter.04.cil.c[706,719] [2022-12-14 16:10:56,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:10:56,720 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:10:56,729 WARN L237 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_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/sv-benchmarks/c/systemc/transmitter.04.cil.c[706,719] [2022-12-14 16:10:56,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:10:56,763 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:10:56,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56 WrapperNode [2022-12-14 16:10:56,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:10:56,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:10:56,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:10:56,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:10:56,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,795 INFO L138 Inliner]: procedures = 36, calls = 42, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 378 [2022-12-14 16:10:56,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:10:56,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:10:56,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:10:56,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:10:56,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:10:56,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:10:56,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:10:56,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:10:56,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (1/1) ... [2022-12-14 16:10:56,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:10:56,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:10:56,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:10:56,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:10:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:10:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 16:10:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 16:10:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 16:10:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 16:10:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-14 16:10:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-14 16:10:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 16:10:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 16:10:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 16:10:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 16:10:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:10:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 16:10:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 16:10:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:10:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:10:56,946 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:10:56,947 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:10:57,290 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:10:57,467 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:10:57,467 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-14 16:10:57,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:10:57 BoogieIcfgContainer [2022-12-14 16:10:57,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:10:57,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:10:57,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:10:57,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:10:57,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:10:56" (1/3) ... [2022-12-14 16:10:57,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366406ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:10:57, skipping insertion in model container [2022-12-14 16:10:57,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:10:56" (2/3) ... [2022-12-14 16:10:57,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366406ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:10:57, skipping insertion in model container [2022-12-14 16:10:57,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:10:57" (3/3) ... [2022-12-14 16:10:57,479 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.04.cil.c [2022-12-14 16:10:57,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:10:57,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 16:10:57,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:10:57,552 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=LoopsAndPotentialCycles, 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;@6cc486b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:10:57,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 16:10:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 75 states have internal predecessors, (111), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-14 16:10:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 16:10:57,566 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:10:57,566 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] [2022-12-14 16:10:57,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:10:57,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:10:57,572 INFO L85 PathProgramCache]: Analyzing trace with hash -67669440, now seen corresponding path program 1 times [2022-12-14 16:10:57,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:10:57,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843339135] [2022-12-14 16:10:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:10:57,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:10:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:10:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:10:57,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:10:57,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843339135] [2022-12-14 16:10:57,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843339135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:10:57,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:10:57,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 16:10:57,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633556375] [2022-12-14 16:10:57,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:10:57,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:10:57,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:10:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:10:57,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:10:57,911 INFO L87 Difference]: Start difference. First operand has 98 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 75 states have internal predecessors, (111), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:10:58,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:10:58,129 INFO L93 Difference]: Finished difference Result 277 states and 421 transitions. [2022-12-14 16:10:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:10:58,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-12-14 16:10:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:10:58,141 INFO L225 Difference]: With dead ends: 277 [2022-12-14 16:10:58,141 INFO L226 Difference]: Without dead ends: 180 [2022-12-14 16:10:58,144 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 [2022-12-14 16:10:58,147 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 235 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:10:58,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 350 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:10:58,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-12-14 16:10:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2022-12-14 16:10:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 136 states have internal predecessors, (192), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-14 16:10:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 250 transitions. [2022-12-14 16:10:58,205 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 250 transitions. Word has length 45 [2022-12-14 16:10:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:10:58,206 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 250 transitions. [2022-12-14 16:10:58,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:10:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 250 transitions. [2022-12-14 16:10:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 16:10:58,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:10:58,208 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] [2022-12-14 16:10:58,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 16:10:58,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:10:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:10:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash 983779649, now seen corresponding path program 1 times [2022-12-14 16:10:58,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:10:58,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072275612] [2022-12-14 16:10:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:10:58,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:10:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:10:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:10:58,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:10:58,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072275612] [2022-12-14 16:10:58,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072275612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:10:58,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:10:58,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 16:10:58,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133773285] [2022-12-14 16:10:58,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:10:58,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 16:10:58,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:10:58,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 16:10:58,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 16:10:58,309 INFO L87 Difference]: Start difference. First operand 177 states and 250 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:10:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:10:58,646 INFO L93 Difference]: Finished difference Result 594 states and 843 transitions. [2022-12-14 16:10:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 16:10:58,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-12-14 16:10:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:10:58,650 INFO L225 Difference]: With dead ends: 594 [2022-12-14 16:10:58,650 INFO L226 Difference]: Without dead ends: 404 [2022-12-14 16:10:58,652 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 [2022-12-14 16:10:58,653 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 452 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 16:10:58,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 561 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 16:10:58,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-12-14 16:10:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2022-12-14 16:10:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 307 states have (on average 1.4169381107491856) internal successors, (435), 305 states have internal predecessors, (435), 56 states have call successors, (56), 26 states have call predecessors, (56), 28 states have return successors, (61), 61 states have call predecessors, (61), 56 states have call successors, (61) [2022-12-14 16:10:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 552 transitions. [2022-12-14 16:10:58,695 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 552 transitions. Word has length 45 [2022-12-14 16:10:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:10:58,695 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 552 transitions. [2022-12-14 16:10:58,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:10:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 552 transitions. [2022-12-14 16:10:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 16:10:58,697 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:10:58,697 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] [2022-12-14 16:10:58,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 16:10:58,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:10:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:10:58,698 INFO L85 PathProgramCache]: Analyzing trace with hash 12104962, now seen corresponding path program 1 times [2022-12-14 16:10:58,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:10:58,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778722772] [2022-12-14 16:10:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:10:58,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:10:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:10:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:10:58,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:10:58,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778722772] [2022-12-14 16:10:58,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778722772] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:10:58,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:10:58,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 16:10:58,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134084859] [2022-12-14 16:10:58,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:10:58,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 16:10:58,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:10:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 16:10:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 16:10:58,803 INFO L87 Difference]: Start difference. First operand 392 states and 552 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:10:59,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:10:59,092 INFO L93 Difference]: Finished difference Result 1343 states and 1907 transitions. [2022-12-14 16:10:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 16:10:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-12-14 16:10:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:10:59,096 INFO L225 Difference]: With dead ends: 1343 [2022-12-14 16:10:59,096 INFO L226 Difference]: Without dead ends: 923 [2022-12-14 16:10:59,098 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 [2022-12-14 16:10:59,099 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 452 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:10:59,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 545 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:10:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-12-14 16:10:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 727. [2022-12-14 16:10:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 570 states have (on average 1.412280701754386) internal successors, (805), 569 states have internal predecessors, (805), 100 states have call successors, (100), 50 states have call predecessors, (100), 56 states have return successors, (114), 108 states have call predecessors, (114), 100 states have call successors, (114) [2022-12-14 16:10:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1019 transitions. [2022-12-14 16:10:59,138 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1019 transitions. Word has length 45 [2022-12-14 16:10:59,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:10:59,138 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1019 transitions. [2022-12-14 16:10:59,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:10:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1019 transitions. [2022-12-14 16:10:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 16:10:59,139 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:10:59,139 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] [2022-12-14 16:10:59,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 16:10:59,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:10:59,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:10:59,140 INFO L85 PathProgramCache]: Analyzing trace with hash 650889441, now seen corresponding path program 1 times [2022-12-14 16:10:59,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:10:59,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619867909] [2022-12-14 16:10:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:10:59,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:10:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:10:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:10:59,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:10:59,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619867909] [2022-12-14 16:10:59,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619867909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:10:59,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:10:59,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 16:10:59,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274001120] [2022-12-14 16:10:59,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:10:59,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 16:10:59,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:10:59,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 16:10:59,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:10:59,281 INFO L87 Difference]: Start difference. First operand 727 states and 1019 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:10:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:10:59,554 INFO L93 Difference]: Finished difference Result 2140 states and 3016 transitions. [2022-12-14 16:10:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 16:10:59,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-12-14 16:10:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:10:59,565 INFO L225 Difference]: With dead ends: 2140 [2022-12-14 16:10:59,565 INFO L226 Difference]: Without dead ends: 1419 [2022-12-14 16:10:59,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:10:59,568 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 422 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:10:59,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 314 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:10:59,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2022-12-14 16:10:59,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1203. [2022-12-14 16:10:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 954 states have (on average 1.39937106918239) internal successors, (1335), 951 states have internal predecessors, (1335), 152 states have call successors, (152), 84 states have call predecessors, (152), 96 states have return successors, (180), 168 states have call predecessors, (180), 152 states have call successors, (180) [2022-12-14 16:10:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1667 transitions. [2022-12-14 16:10:59,651 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1667 transitions. Word has length 45 [2022-12-14 16:10:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:10:59,651 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1667 transitions. [2022-12-14 16:10:59,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:10:59,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1667 transitions. [2022-12-14 16:10:59,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 16:10:59,652 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:10:59,653 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] [2022-12-14 16:10:59,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 16:10:59,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:10:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:10:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash 944418127, now seen corresponding path program 1 times [2022-12-14 16:10:59,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:10:59,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010002739] [2022-12-14 16:10:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:10:59,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:10:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:10:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:10:59,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:10:59,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010002739] [2022-12-14 16:10:59,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010002739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:10:59,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:10:59,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 16:10:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979564174] [2022-12-14 16:10:59,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:10:59,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 16:10:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:10:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 16:10:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:10:59,781 INFO L87 Difference]: Start difference. First operand 1203 states and 1667 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:11:00,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:00,109 INFO L93 Difference]: Finished difference Result 4090 states and 5696 transitions. [2022-12-14 16:11:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 16:11:00,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-12-14 16:11:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:00,118 INFO L225 Difference]: With dead ends: 4090 [2022-12-14 16:11:00,118 INFO L226 Difference]: Without dead ends: 2893 [2022-12-14 16:11:00,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:11:00,122 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 414 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:00,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 346 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:11:00,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2022-12-14 16:11:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2303. [2022-12-14 16:11:00,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 1830 states have (on average 1.3868852459016394) internal successors, (2538), 1825 states have internal predecessors, (2538), 285 states have call successors, (285), 165 states have call predecessors, (285), 187 states have return successors, (333), 313 states have call predecessors, (333), 285 states have call successors, (333) [2022-12-14 16:11:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3156 transitions. [2022-12-14 16:11:00,261 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3156 transitions. Word has length 46 [2022-12-14 16:11:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:00,261 INFO L495 AbstractCegarLoop]: Abstraction has 2303 states and 3156 transitions. [2022-12-14 16:11:00,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:11:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3156 transitions. [2022-12-14 16:11:00,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-14 16:11:00,263 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:00,263 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] [2022-12-14 16:11:00,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 16:11:00,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:00,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:00,263 INFO L85 PathProgramCache]: Analyzing trace with hash -679124424, now seen corresponding path program 1 times [2022-12-14 16:11:00,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:00,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096652005] [2022-12-14 16:11:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:00,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:11:00,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:00,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096652005] [2022-12-14 16:11:00,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096652005] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:00,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:00,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 16:11:00,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796983276] [2022-12-14 16:11:00,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:00,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 16:11:00,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:00,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 16:11:00,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:11:00,402 INFO L87 Difference]: Start difference. First operand 2303 states and 3156 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:11:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:00,862 INFO L93 Difference]: Finished difference Result 6207 states and 8555 transitions. [2022-12-14 16:11:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 16:11:00,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2022-12-14 16:11:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:00,883 INFO L225 Difference]: With dead ends: 6207 [2022-12-14 16:11:00,883 INFO L226 Difference]: Without dead ends: 3910 [2022-12-14 16:11:00,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:11:00,890 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 371 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:00,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 313 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:11:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2022-12-14 16:11:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3420. [2022-12-14 16:11:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3420 states, 2715 states have (on average 1.3749539594843463) internal successors, (3733), 2704 states have internal predecessors, (3733), 426 states have call successors, (426), 250 states have call predecessors, (426), 278 states have return successors, (486), 466 states have call predecessors, (486), 426 states have call successors, (486) [2022-12-14 16:11:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 4645 transitions. [2022-12-14 16:11:01,147 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 4645 transitions. Word has length 47 [2022-12-14 16:11:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:01,147 INFO L495 AbstractCegarLoop]: Abstraction has 3420 states and 4645 transitions. [2022-12-14 16:11:01,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:11:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 4645 transitions. [2022-12-14 16:11:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 16:11:01,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:01,149 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] [2022-12-14 16:11:01,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 16:11:01,149 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:01,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:01,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1514097899, now seen corresponding path program 1 times [2022-12-14 16:11:01,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:01,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864616644] [2022-12-14 16:11:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:01,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:11:01,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:01,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864616644] [2022-12-14 16:11:01,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864616644] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:01,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:01,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 16:11:01,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897308717] [2022-12-14 16:11:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 16:11:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 16:11:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:11:01,247 INFO L87 Difference]: Start difference. First operand 3420 states and 4645 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:11:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:01,813 INFO L93 Difference]: Finished difference Result 8950 states and 12227 transitions. [2022-12-14 16:11:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 16:11:01,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2022-12-14 16:11:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:01,829 INFO L225 Difference]: With dead ends: 8950 [2022-12-14 16:11:01,829 INFO L226 Difference]: Without dead ends: 5536 [2022-12-14 16:11:01,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:11:01,836 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 350 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:01,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 300 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:11:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2022-12-14 16:11:02,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 5070. [2022-12-14 16:11:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5070 states, 4030 states have (on average 1.3647642679900744) internal successors, (5500), 4013 states have internal predecessors, (5500), 629 states have call successors, (629), 376 states have call predecessors, (629), 410 states have return successors, (701), 681 states have call predecessors, (701), 629 states have call successors, (701) [2022-12-14 16:11:02,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5070 states to 5070 states and 6830 transitions. [2022-12-14 16:11:02,220 INFO L78 Accepts]: Start accepts. Automaton has 5070 states and 6830 transitions. Word has length 48 [2022-12-14 16:11:02,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:02,220 INFO L495 AbstractCegarLoop]: Abstraction has 5070 states and 6830 transitions. [2022-12-14 16:11:02,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 16:11:02,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5070 states and 6830 transitions. [2022-12-14 16:11:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 16:11:02,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:02,222 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] [2022-12-14 16:11:02,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 16:11:02,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:02,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:02,222 INFO L85 PathProgramCache]: Analyzing trace with hash 123500188, now seen corresponding path program 1 times [2022-12-14 16:11:02,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:02,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137677382] [2022-12-14 16:11:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:11:02,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:02,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137677382] [2022-12-14 16:11:02,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137677382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:02,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:02,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:11:02,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034726295] [2022-12-14 16:11:02,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:02,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:11:02,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:02,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:11:02,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:11:02,255 INFO L87 Difference]: Start difference. First operand 5070 states and 6830 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 16:11:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:02,771 INFO L93 Difference]: Finished difference Result 15035 states and 20469 transitions. [2022-12-14 16:11:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:11:02,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-12-14 16:11:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:02,801 INFO L225 Difference]: With dead ends: 15035 [2022-12-14 16:11:02,801 INFO L226 Difference]: Without dead ends: 9970 [2022-12-14 16:11:02,810 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 [2022-12-14 16:11:02,811 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 108 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:02,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 224 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:11:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2022-12-14 16:11:03,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9900. [2022-12-14 16:11:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9900 states, 7825 states have (on average 1.3343130990415335) internal successors, (10441), 7790 states have internal predecessors, (10441), 1254 states have call successors, (1254), 752 states have call predecessors, (1254), 820 states have return successors, (1398), 1358 states have call predecessors, (1398), 1254 states have call successors, (1398) [2022-12-14 16:11:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9900 states to 9900 states and 13093 transitions. [2022-12-14 16:11:03,655 INFO L78 Accepts]: Start accepts. Automaton has 9900 states and 13093 transitions. Word has length 49 [2022-12-14 16:11:03,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:03,655 INFO L495 AbstractCegarLoop]: Abstraction has 9900 states and 13093 transitions. [2022-12-14 16:11:03,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 16:11:03,655 INFO L276 IsEmpty]: Start isEmpty. Operand 9900 states and 13093 transitions. [2022-12-14 16:11:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 16:11:03,659 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:03,659 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 16:11:03,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 16:11:03,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:03,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:03,660 INFO L85 PathProgramCache]: Analyzing trace with hash -228624608, now seen corresponding path program 1 times [2022-12-14 16:11:03,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:03,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217853445] [2022-12-14 16:11:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:03,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 16:11:03,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217853445] [2022-12-14 16:11:03,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217853445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:03,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:03,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:11:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506201013] [2022-12-14 16:11:03,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:03,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:11:03,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:11:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:11:03,737 INFO L87 Difference]: Start difference. First operand 9900 states and 13093 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 16:11:04,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:04,482 INFO L93 Difference]: Finished difference Result 18545 states and 24947 transitions. [2022-12-14 16:11:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:11:04,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2022-12-14 16:11:04,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:04,525 INFO L225 Difference]: With dead ends: 18545 [2022-12-14 16:11:04,525 INFO L226 Difference]: Without dead ends: 12499 [2022-12-14 16:11:04,538 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 [2022-12-14 16:11:04,539 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 77 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:04,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 306 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:11:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12499 states. [2022-12-14 16:11:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12499 to 10190. [2022-12-14 16:11:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10190 states, 8121 states have (on average 1.3492180765915527) internal successors, (10957), 8104 states have internal predecessors, (10957), 1256 states have call successors, (1256), 778 states have call predecessors, (1256), 812 states have return successors, (1328), 1308 states have call predecessors, (1328), 1256 states have call successors, (1328) [2022-12-14 16:11:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10190 states to 10190 states and 13541 transitions. [2022-12-14 16:11:05,287 INFO L78 Accepts]: Start accepts. Automaton has 10190 states and 13541 transitions. Word has length 67 [2022-12-14 16:11:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:05,287 INFO L495 AbstractCegarLoop]: Abstraction has 10190 states and 13541 transitions. [2022-12-14 16:11:05,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 16:11:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 10190 states and 13541 transitions. [2022-12-14 16:11:05,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 16:11:05,295 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:05,295 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, 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] [2022-12-14 16:11:05,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 16:11:05,295 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:05,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:05,296 INFO L85 PathProgramCache]: Analyzing trace with hash -596853249, now seen corresponding path program 1 times [2022-12-14 16:11:05,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:05,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836543781] [2022-12-14 16:11:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:05,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 16:11:05,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:05,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836543781] [2022-12-14 16:11:05,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836543781] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:11:05,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063935806] [2022-12-14 16:11:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:05,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:11:05,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:11:05,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:11:05,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 16:11:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:05,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:11:05,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:11:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:11:05,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:11:05,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063935806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:05,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:11:05,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 16:11:05,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383017997] [2022-12-14 16:11:05,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:05,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:11:05,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:05,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:11:05,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:11:05,479 INFO L87 Difference]: Start difference. First operand 10190 states and 13541 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 16:11:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:06,145 INFO L93 Difference]: Finished difference Result 19468 states and 26085 transitions. [2022-12-14 16:11:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:11:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2022-12-14 16:11:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:06,175 INFO L225 Difference]: With dead ends: 19468 [2022-12-14 16:11:06,175 INFO L226 Difference]: Without dead ends: 12576 [2022-12-14 16:11:06,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:11:06,187 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 68 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 298 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 [2022-12-14 16:11:06,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 298 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:11:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12576 states. [2022-12-14 16:11:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12576 to 11342. [2022-12-14 16:11:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11342 states, 9149 states have (on average 1.3620067766969068) internal successors, (12461), 9132 states have internal predecessors, (12461), 1318 states have call successors, (1318), 840 states have call predecessors, (1318), 874 states have return successors, (1390), 1370 states have call predecessors, (1390), 1318 states have call successors, (1390) [2022-12-14 16:11:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11342 states to 11342 states and 15169 transitions. [2022-12-14 16:11:06,935 INFO L78 Accepts]: Start accepts. Automaton has 11342 states and 15169 transitions. Word has length 95 [2022-12-14 16:11:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:06,936 INFO L495 AbstractCegarLoop]: Abstraction has 11342 states and 15169 transitions. [2022-12-14 16:11:06,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 16:11:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 11342 states and 15169 transitions. [2022-12-14 16:11:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 16:11:06,944 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:06,944 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, 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] [2022-12-14 16:11:06,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 16:11:07,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 16:11:07,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:07,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1520488245, now seen corresponding path program 1 times [2022-12-14 16:11:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:07,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935263546] [2022-12-14 16:11:07,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:07,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 16:11:07,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:07,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935263546] [2022-12-14 16:11:07,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935263546] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:11:07,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252145058] [2022-12-14 16:11:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:07,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:11:07,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:11:07,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:11:07,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 16:11:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:07,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:11:07,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:11:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:11:07,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:11:07,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252145058] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:07,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:11:07,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 16:11:07,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789274562] [2022-12-14 16:11:07,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:07,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:11:07,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:07,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:11:07,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:11:07,356 INFO L87 Difference]: Start difference. First operand 11342 states and 15169 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 16:11:08,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:08,270 INFO L93 Difference]: Finished difference Result 21506 states and 28957 transitions. [2022-12-14 16:11:08,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:11:08,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2022-12-14 16:11:08,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:08,300 INFO L225 Difference]: With dead ends: 21506 [2022-12-14 16:11:08,300 INFO L226 Difference]: Without dead ends: 13830 [2022-12-14 16:11:08,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:11:08,314 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 62 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 293 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 [2022-12-14 16:11:08,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 293 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:11:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13830 states. [2022-12-14 16:11:08,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13830 to 12800. [2022-12-14 16:11:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12800 states, 10447 states have (on average 1.372164257681631) internal successors, (14335), 10430 states have internal predecessors, (14335), 1398 states have call successors, (1398), 920 states have call predecessors, (1398), 954 states have return successors, (1470), 1450 states have call predecessors, (1470), 1398 states have call successors, (1470) [2022-12-14 16:11:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12800 states to 12800 states and 17203 transitions. [2022-12-14 16:11:08,986 INFO L78 Accepts]: Start accepts. Automaton has 12800 states and 17203 transitions. Word has length 95 [2022-12-14 16:11:08,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:08,986 INFO L495 AbstractCegarLoop]: Abstraction has 12800 states and 17203 transitions. [2022-12-14 16:11:08,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 16:11:08,987 INFO L276 IsEmpty]: Start isEmpty. Operand 12800 states and 17203 transitions. [2022-12-14 16:11:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 16:11:08,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:08,992 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, 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] [2022-12-14 16:11:08,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 16:11:09,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:11:09,193 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1598526343, now seen corresponding path program 1 times [2022-12-14 16:11:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:09,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398536557] [2022-12-14 16:11:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:09,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 16:11:09,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:09,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398536557] [2022-12-14 16:11:09,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398536557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:09,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:09,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:11:09,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225324645] [2022-12-14 16:11:09,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:09,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:11:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:09,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:11:09,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:11:09,248 INFO L87 Difference]: Start difference. First operand 12800 states and 17203 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-14 16:11:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:10,237 INFO L93 Difference]: Finished difference Result 31983 states and 43128 transitions. [2022-12-14 16:11:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:11:10,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 92 [2022-12-14 16:11:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:10,272 INFO L225 Difference]: With dead ends: 31983 [2022-12-14 16:11:10,272 INFO L226 Difference]: Without dead ends: 19188 [2022-12-14 16:11:10,292 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 [2022-12-14 16:11:10,292 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 102 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:10,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 231 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:11:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19188 states. [2022-12-14 16:11:11,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19188 to 19024. [2022-12-14 16:11:11,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19024 states, 15551 states have (on average 1.3559899684907724) internal successors, (21087), 15528 states have internal predecessors, (21087), 2056 states have call successors, (2056), 1368 states have call predecessors, (2056), 1416 states have return successors, (2156), 2128 states have call predecessors, (2156), 2056 states have call successors, (2156) [2022-12-14 16:11:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19024 states to 19024 states and 25299 transitions. [2022-12-14 16:11:11,542 INFO L78 Accepts]: Start accepts. Automaton has 19024 states and 25299 transitions. Word has length 92 [2022-12-14 16:11:11,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:11,543 INFO L495 AbstractCegarLoop]: Abstraction has 19024 states and 25299 transitions. [2022-12-14 16:11:11,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-14 16:11:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 19024 states and 25299 transitions. [2022-12-14 16:11:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 16:11:11,550 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:11,550 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, 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] [2022-12-14 16:11:11,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 16:11:11,550 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:11,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:11,551 INFO L85 PathProgramCache]: Analyzing trace with hash -971716932, now seen corresponding path program 1 times [2022-12-14 16:11:11,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:11,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535806509] [2022-12-14 16:11:11,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:11,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 16:11:11,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:11,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535806509] [2022-12-14 16:11:11,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535806509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:11,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:11,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 16:11:11,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062619245] [2022-12-14 16:11:11,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:11,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:11:11,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:11,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:11:11,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:11:11,589 INFO L87 Difference]: Start difference. First operand 19024 states and 25299 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 16:11:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:12,751 INFO L93 Difference]: Finished difference Result 30734 states and 41595 transitions. [2022-12-14 16:11:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:11:12,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-12-14 16:11:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:12,787 INFO L225 Difference]: With dead ends: 30734 [2022-12-14 16:11:12,787 INFO L226 Difference]: Without dead ends: 19024 [2022-12-14 16:11:12,805 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 [2022-12-14 16:11:12,805 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 238 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:12,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 350 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:11:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19024 states. [2022-12-14 16:11:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19024 to 18736. [2022-12-14 16:11:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18736 states, 15263 states have (on average 1.3347965668610364) internal successors, (20373), 15240 states have internal predecessors, (20373), 2056 states have call successors, (2056), 1368 states have call predecessors, (2056), 1416 states have return successors, (2156), 2128 states have call predecessors, (2156), 2056 states have call successors, (2156) [2022-12-14 16:11:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18736 states to 18736 states and 24585 transitions. [2022-12-14 16:11:13,882 INFO L78 Accepts]: Start accepts. Automaton has 18736 states and 24585 transitions. Word has length 93 [2022-12-14 16:11:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:13,882 INFO L495 AbstractCegarLoop]: Abstraction has 18736 states and 24585 transitions. [2022-12-14 16:11:13,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 16:11:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 18736 states and 24585 transitions. [2022-12-14 16:11:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 16:11:13,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:13,889 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, 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] [2022-12-14 16:11:13,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 16:11:13,889 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1633050723, now seen corresponding path program 1 times [2022-12-14 16:11:13,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:13,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482485993] [2022-12-14 16:11:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:13,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 16:11:14,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:14,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482485993] [2022-12-14 16:11:14,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482485993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:14,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:14,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 16:11:14,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968911504] [2022-12-14 16:11:14,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:14,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 16:11:14,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 16:11:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:11:14,194 INFO L87 Difference]: Start difference. First operand 18736 states and 24585 transitions. Second operand has 11 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-12-14 16:11:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:16,765 INFO L93 Difference]: Finished difference Result 50357 states and 68218 transitions. [2022-12-14 16:11:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 16:11:16,766 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 93 [2022-12-14 16:11:16,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:16,828 INFO L225 Difference]: With dead ends: 50357 [2022-12-14 16:11:16,828 INFO L226 Difference]: Without dead ends: 34917 [2022-12-14 16:11:16,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-12-14 16:11:16,853 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 539 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:16,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 463 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 16:11:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34917 states. [2022-12-14 16:11:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34917 to 26651. [2022-12-14 16:11:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26651 states, 22239 states have (on average 1.3242052250550833) internal successors, (29449), 22219 states have internal predecessors, (29449), 2490 states have call successors, (2490), 1868 states have call predecessors, (2490), 1921 states have return successors, (2694), 2564 states have call predecessors, (2694), 2490 states have call successors, (2694) [2022-12-14 16:11:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26651 states to 26651 states and 34633 transitions. [2022-12-14 16:11:18,992 INFO L78 Accepts]: Start accepts. Automaton has 26651 states and 34633 transitions. Word has length 93 [2022-12-14 16:11:18,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:18,992 INFO L495 AbstractCegarLoop]: Abstraction has 26651 states and 34633 transitions. [2022-12-14 16:11:18,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-12-14 16:11:18,993 INFO L276 IsEmpty]: Start isEmpty. Operand 26651 states and 34633 transitions. [2022-12-14 16:11:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 16:11:18,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:18,999 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, 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] [2022-12-14 16:11:18,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 16:11:19,000 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash -224369597, now seen corresponding path program 1 times [2022-12-14 16:11:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029431776] [2022-12-14 16:11:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 16:11:19,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:19,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029431776] [2022-12-14 16:11:19,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029431776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:19,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:19,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 16:11:19,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389848511] [2022-12-14 16:11:19,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:19,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 16:11:19,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:19,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 16:11:19,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 16:11:19,120 INFO L87 Difference]: Start difference. First operand 26651 states and 34633 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 16:11:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:21,567 INFO L93 Difference]: Finished difference Result 48788 states and 63602 transitions. [2022-12-14 16:11:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 16:11:21,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 94 [2022-12-14 16:11:21,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:21,625 INFO L225 Difference]: With dead ends: 48788 [2022-12-14 16:11:21,626 INFO L226 Difference]: Without dead ends: 34964 [2022-12-14 16:11:21,647 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 [2022-12-14 16:11:21,648 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 104 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:21,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 420 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:11:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34964 states. [2022-12-14 16:11:24,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34964 to 32555. [2022-12-14 16:11:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32555 states, 27049 states have (on average 1.3096232762763873) internal successors, (35424), 26957 states have internal predecessors, (35424), 3169 states have call successors, (3169), 2355 states have call predecessors, (3169), 2336 states have return successors, (3475), 3243 states have call predecessors, (3475), 3169 states have call successors, (3475) [2022-12-14 16:11:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32555 states to 32555 states and 42068 transitions. [2022-12-14 16:11:24,245 INFO L78 Accepts]: Start accepts. Automaton has 32555 states and 42068 transitions. Word has length 94 [2022-12-14 16:11:24,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:24,246 INFO L495 AbstractCegarLoop]: Abstraction has 32555 states and 42068 transitions. [2022-12-14 16:11:24,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 16:11:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand 32555 states and 42068 transitions. [2022-12-14 16:11:24,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 16:11:24,270 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:24,270 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-14 16:11:24,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 16:11:24,270 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:24,271 INFO L85 PathProgramCache]: Analyzing trace with hash 311394981, now seen corresponding path program 1 times [2022-12-14 16:11:24,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:24,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248380825] [2022-12-14 16:11:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:24,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 16:11:24,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:24,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248380825] [2022-12-14 16:11:24,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248380825] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:11:24,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241607093] [2022-12-14 16:11:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:24,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:11:24,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:11:24,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:11:24,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 16:11:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:24,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:11:24,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:11:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 16:11:24,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:11:24,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241607093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:24,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:11:24,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 16:11:24,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321104563] [2022-12-14 16:11:24,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:24,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:11:24,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:24,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:11:24,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 16:11:24,547 INFO L87 Difference]: Start difference. First operand 32555 states and 42068 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 1 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-12-14 16:11:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:27,031 INFO L93 Difference]: Finished difference Result 46518 states and 60513 transitions. [2022-12-14 16:11:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:11:27,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 1 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 121 [2022-12-14 16:11:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:27,092 INFO L225 Difference]: With dead ends: 46518 [2022-12-14 16:11:27,092 INFO L226 Difference]: Without dead ends: 36147 [2022-12-14 16:11:27,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 16:11:27,111 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 57 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:27,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 227 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:11:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36147 states. [2022-12-14 16:11:29,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36147 to 31897. [2022-12-14 16:11:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31897 states, 26473 states have (on average 1.3055566048426699) internal successors, (34562), 26377 states have internal predecessors, (34562), 3139 states have call successors, (3139), 2337 states have call predecessors, (3139), 2284 states have return successors, (3377), 3183 states have call predecessors, (3377), 3139 states have call successors, (3377) [2022-12-14 16:11:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31897 states to 31897 states and 41078 transitions. [2022-12-14 16:11:29,485 INFO L78 Accepts]: Start accepts. Automaton has 31897 states and 41078 transitions. Word has length 121 [2022-12-14 16:11:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:29,486 INFO L495 AbstractCegarLoop]: Abstraction has 31897 states and 41078 transitions. [2022-12-14 16:11:29,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 1 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-12-14 16:11:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 31897 states and 41078 transitions. [2022-12-14 16:11:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 16:11:29,510 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:29,511 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-14 16:11:29,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 16:11:29,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:11:29,711 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:29,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:29,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1302559654, now seen corresponding path program 1 times [2022-12-14 16:11:29,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:29,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018842881] [2022-12-14 16:11:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:29,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 16:11:29,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:29,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018842881] [2022-12-14 16:11:29,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018842881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:29,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:29,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 16:11:29,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661608894] [2022-12-14 16:11:29,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:29,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:11:29,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:29,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:11:29,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:11:29,802 INFO L87 Difference]: Start difference. First operand 31897 states and 41078 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 16:11:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:32,839 INFO L93 Difference]: Finished difference Result 58466 states and 75711 transitions. [2022-12-14 16:11:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:11:32,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 121 [2022-12-14 16:11:32,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:32,910 INFO L225 Difference]: With dead ends: 58466 [2022-12-14 16:11:32,910 INFO L226 Difference]: Without dead ends: 39295 [2022-12-14 16:11:32,941 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 [2022-12-14 16:11:32,941 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 115 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:32,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 301 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:11:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39295 states. [2022-12-14 16:11:35,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39295 to 37885. [2022-12-14 16:11:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37885 states, 32128 states have (on average 1.291926045816733) internal successors, (41507), 32161 states have internal predecessors, (41507), 3139 states have call successors, (3139), 2541 states have call predecessors, (3139), 2617 states have return successors, (3539), 3183 states have call predecessors, (3539), 3139 states have call successors, (3539) [2022-12-14 16:11:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37885 states to 37885 states and 48185 transitions. [2022-12-14 16:11:35,918 INFO L78 Accepts]: Start accepts. Automaton has 37885 states and 48185 transitions. Word has length 121 [2022-12-14 16:11:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:35,918 INFO L495 AbstractCegarLoop]: Abstraction has 37885 states and 48185 transitions. [2022-12-14 16:11:35,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 16:11:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 37885 states and 48185 transitions. [2022-12-14 16:11:35,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 16:11:35,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:35,940 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-14 16:11:35,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 16:11:35,940 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:35,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:35,941 INFO L85 PathProgramCache]: Analyzing trace with hash 736582548, now seen corresponding path program 1 times [2022-12-14 16:11:35,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:35,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524319812] [2022-12-14 16:11:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:35,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 16:11:35,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:35,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524319812] [2022-12-14 16:11:35,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524319812] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:35,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:35,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:11:35,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613878449] [2022-12-14 16:11:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:35,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:11:35,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:11:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:11:35,993 INFO L87 Difference]: Start difference. First operand 37885 states and 48185 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 16:11:39,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:39,543 INFO L93 Difference]: Finished difference Result 69904 states and 89867 transitions. [2022-12-14 16:11:39,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:11:39,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 122 [2022-12-14 16:11:39,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:39,636 INFO L225 Difference]: With dead ends: 69904 [2022-12-14 16:11:39,636 INFO L226 Difference]: Without dead ends: 43942 [2022-12-14 16:11:39,667 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 [2022-12-14 16:11:39,668 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 54 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:39,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 282 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:11:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43942 states. [2022-12-14 16:11:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43942 to 40790. [2022-12-14 16:11:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40790 states, 34681 states have (on average 1.2995588362503965) internal successors, (45070), 34714 states have internal predecessors, (45070), 3315 states have call successors, (3315), 2717 states have call predecessors, (3315), 2793 states have return successors, (3715), 3359 states have call predecessors, (3715), 3315 states have call successors, (3715) [2022-12-14 16:11:42,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40790 states to 40790 states and 52100 transitions. [2022-12-14 16:11:42,863 INFO L78 Accepts]: Start accepts. Automaton has 40790 states and 52100 transitions. Word has length 122 [2022-12-14 16:11:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:42,863 INFO L495 AbstractCegarLoop]: Abstraction has 40790 states and 52100 transitions. [2022-12-14 16:11:42,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 16:11:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 40790 states and 52100 transitions. [2022-12-14 16:11:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 16:11:42,885 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:42,885 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-14 16:11:42,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 16:11:42,885 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:42,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:42,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1163767954, now seen corresponding path program 1 times [2022-12-14 16:11:42,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:42,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033168097] [2022-12-14 16:11:42,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:42,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 16:11:43,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:43,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033168097] [2022-12-14 16:11:43,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033168097] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:11:43,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092357475] [2022-12-14 16:11:43,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:43,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:11:43,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:11:43,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:11:43,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 16:11:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:43,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 16:11:43,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:11:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 16:11:43,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:11:43,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092357475] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:43,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:11:43,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2022-12-14 16:11:43,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122081477] [2022-12-14 16:11:43,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:43,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 16:11:43,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:43,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 16:11:43,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-12-14 16:11:43,490 INFO L87 Difference]: Start difference. First operand 40790 states and 52100 transitions. Second operand has 6 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 16:11:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:47,181 INFO L93 Difference]: Finished difference Result 74147 states and 95430 transitions. [2022-12-14 16:11:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 16:11:47,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2022-12-14 16:11:47,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:47,253 INFO L225 Difference]: With dead ends: 74147 [2022-12-14 16:11:47,253 INFO L226 Difference]: Without dead ends: 42735 [2022-12-14 16:11:47,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-12-14 16:11:47,292 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 176 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:47,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 168 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:11:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42735 states. [2022-12-14 16:11:50,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42735 to 41613. [2022-12-14 16:11:50,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41613 states, 35382 states have (on average 1.2778531456672884) internal successors, (45213), 35445 states have internal predecessors, (45213), 3345 states have call successors, (3345), 2777 states have call predecessors, (3345), 2885 states have return successors, (3747), 3391 states have call predecessors, (3747), 3345 states have call successors, (3747) [2022-12-14 16:11:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41613 states to 41613 states and 52305 transitions. [2022-12-14 16:11:50,868 INFO L78 Accepts]: Start accepts. Automaton has 41613 states and 52305 transitions. Word has length 122 [2022-12-14 16:11:50,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:50,868 INFO L495 AbstractCegarLoop]: Abstraction has 41613 states and 52305 transitions. [2022-12-14 16:11:50,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 16:11:50,868 INFO L276 IsEmpty]: Start isEmpty. Operand 41613 states and 52305 transitions. [2022-12-14 16:11:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 16:11:50,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:50,890 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 16:11:50,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 16:11:51,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:11:51,092 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:11:51,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:51,093 INFO L85 PathProgramCache]: Analyzing trace with hash 610035216, now seen corresponding path program 1 times [2022-12-14 16:11:51,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:51,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504310618] [2022-12-14 16:11:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:51,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-14 16:11:51,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:51,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504310618] [2022-12-14 16:11:51,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504310618] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:11:51,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352481450] [2022-12-14 16:11:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:51,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:11:51,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:11:51,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:11:51,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 16:11:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:51,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 16:11:51,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:11:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 16:11:51,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:11:51,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352481450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:51,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:11:51,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-12-14 16:11:51,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024371500] [2022-12-14 16:11:51,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:51,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:11:51,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:51,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:11:51,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:11:51,298 INFO L87 Difference]: Start difference. First operand 41613 states and 52305 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 16:11:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:55,595 INFO L93 Difference]: Finished difference Result 79240 states and 101268 transitions. [2022-12-14 16:11:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:11:55,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 122 [2022-12-14 16:11:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:55,675 INFO L225 Difference]: With dead ends: 79240 [2022-12-14 16:11:55,676 INFO L226 Difference]: Without dead ends: 48178 [2022-12-14 16:11:55,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:11:55,712 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 101 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:55,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 308 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:11:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48178 states. [2022-12-14 16:11:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48178 to 47894. [2022-12-14 16:11:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47894 states, 40685 states have (on average 1.256630207693253) internal successors, (51126), 40754 states have internal predecessors, (51126), 3885 states have call successors, (3885), 3209 states have call predecessors, (3885), 3323 states have return successors, (4611), 3931 states have call predecessors, (4611), 3885 states have call successors, (4611) [2022-12-14 16:11:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47894 states to 47894 states and 59622 transitions. [2022-12-14 16:11:59,793 INFO L78 Accepts]: Start accepts. Automaton has 47894 states and 59622 transitions. Word has length 122 [2022-12-14 16:11:59,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:59,794 INFO L495 AbstractCegarLoop]: Abstraction has 47894 states and 59622 transitions. [2022-12-14 16:11:59,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 16:11:59,794 INFO L276 IsEmpty]: Start isEmpty. Operand 47894 states and 59622 transitions. [2022-12-14 16:11:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-14 16:11:59,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:59,818 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-14 16:11:59,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 16:12:00,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:12:00,020 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:12:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:12:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash 801883170, now seen corresponding path program 1 times [2022-12-14 16:12:00,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:12:00,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016314067] [2022-12-14 16:12:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:12:00,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:12:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:12:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 16:12:00,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:12:00,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016314067] [2022-12-14 16:12:00,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016314067] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:12:00,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986536103] [2022-12-14 16:12:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:12:00,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:12:00,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:12:00,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:12:00,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 16:12:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:12:00,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 16:12:00,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:12:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:12:00,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:12:00,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986536103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:12:00,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:12:00,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-12-14 16:12:00,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393208680] [2022-12-14 16:12:00,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:12:00,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 16:12:00,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:12:00,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 16:12:00,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:12:00,335 INFO L87 Difference]: Start difference. First operand 47894 states and 59622 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 5 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 16:12:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:12:05,113 INFO L93 Difference]: Finished difference Result 82129 states and 101898 transitions. [2022-12-14 16:12:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 16:12:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 5 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 124 [2022-12-14 16:12:05,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:12:05,214 INFO L225 Difference]: With dead ends: 82129 [2022-12-14 16:12:05,214 INFO L226 Difference]: Without dead ends: 54477 [2022-12-14 16:12:05,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:12:05,248 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 226 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:12:05,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 494 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:12:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54477 states. [2022-12-14 16:12:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54477 to 52119. [2022-12-14 16:12:09,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52119 states, 44156 states have (on average 1.2510417610290787) internal successors, (55241), 44262 states have internal predecessors, (55241), 4269 states have call successors, (4269), 3509 states have call predecessors, (4269), 3693 states have return successors, (5163), 4348 states have call predecessors, (5163), 4269 states have call successors, (5163) [2022-12-14 16:12:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52119 states to 52119 states and 64673 transitions. [2022-12-14 16:12:09,909 INFO L78 Accepts]: Start accepts. Automaton has 52119 states and 64673 transitions. Word has length 124 [2022-12-14 16:12:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:12:09,909 INFO L495 AbstractCegarLoop]: Abstraction has 52119 states and 64673 transitions. [2022-12-14 16:12:09,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 5 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 16:12:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand 52119 states and 64673 transitions. [2022-12-14 16:12:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-14 16:12:09,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:12:09,928 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-14 16:12:09,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 16:12:10,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:12:10,130 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:12:10,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:12:10,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2061000570, now seen corresponding path program 1 times [2022-12-14 16:12:10,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:12:10,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979722880] [2022-12-14 16:12:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:12:10,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:12:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:12:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-14 16:12:10,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:12:10,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979722880] [2022-12-14 16:12:10,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979722880] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:12:10,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:12:10,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:12:10,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293809202] [2022-12-14 16:12:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:12:10,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:12:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:12:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:12:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:12:10,182 INFO L87 Difference]: Start difference. First operand 52119 states and 64673 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 16:12:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:12:15,090 INFO L93 Difference]: Finished difference Result 90498 states and 113719 transitions. [2022-12-14 16:12:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:12:15,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 124 [2022-12-14 16:12:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:12:15,200 INFO L225 Difference]: With dead ends: 90498 [2022-12-14 16:12:15,200 INFO L226 Difference]: Without dead ends: 58979 [2022-12-14 16:12:15,234 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 [2022-12-14 16:12:15,235 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 48 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:12:15,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 273 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:12:15,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58979 states. [2022-12-14 16:12:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58979 to 55545. [2022-12-14 16:12:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55545 states, 47158 states have (on average 1.2637516434115101) internal successors, (59596), 47264 states have internal predecessors, (59596), 4481 states have call successors, (4481), 3721 states have call predecessors, (4481), 3905 states have return successors, (5375), 4560 states have call predecessors, (5375), 4481 states have call successors, (5375) [2022-12-14 16:12:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55545 states to 55545 states and 69452 transitions. [2022-12-14 16:12:20,068 INFO L78 Accepts]: Start accepts. Automaton has 55545 states and 69452 transitions. Word has length 124 [2022-12-14 16:12:20,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:12:20,069 INFO L495 AbstractCegarLoop]: Abstraction has 55545 states and 69452 transitions. [2022-12-14 16:12:20,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 16:12:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 55545 states and 69452 transitions. [2022-12-14 16:12:20,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-14 16:12:20,086 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:12:20,086 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1] [2022-12-14 16:12:20,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 16:12:20,086 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:12:20,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:12:20,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1819592494, now seen corresponding path program 1 times [2022-12-14 16:12:20,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:12:20,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064912360] [2022-12-14 16:12:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:12:20,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:12:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:12:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 50 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 16:12:20,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:12:20,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064912360] [2022-12-14 16:12:20,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064912360] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:12:20,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833784119] [2022-12-14 16:12:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:12:20,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:12:20,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:12:20,396 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:12:20,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 16:12:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:12:20,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 16:12:20,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:12:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 16:12:20,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:12:20,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833784119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:12:20,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:12:20,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-12-14 16:12:20,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84202160] [2022-12-14 16:12:20,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:12:20,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:12:20,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:12:20,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:12:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-14 16:12:20,551 INFO L87 Difference]: Start difference. First operand 55545 states and 69452 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 16:12:26,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:12:26,246 INFO L93 Difference]: Finished difference Result 102575 states and 128899 transitions. [2022-12-14 16:12:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 16:12:26,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2022-12-14 16:12:26,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:12:26,365 INFO L225 Difference]: With dead ends: 102575 [2022-12-14 16:12:26,365 INFO L226 Difference]: Without dead ends: 64305 [2022-12-14 16:12:26,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-12-14 16:12:26,407 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 108 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:12:26,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 462 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:12:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64305 states. [2022-12-14 16:12:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64305 to 62499. [2022-12-14 16:12:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62499 states, 52439 states have (on average 1.256088026087454) internal successors, (65868), 52698 states have internal predecessors, (65868), 5371 states have call successors, (5371), 4357 states have call predecessors, (5371), 4688 states have return successors, (6862), 5444 states have call predecessors, (6862), 5371 states have call successors, (6862) [2022-12-14 16:12:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62499 states to 62499 states and 78101 transitions. [2022-12-14 16:12:32,085 INFO L78 Accepts]: Start accepts. Automaton has 62499 states and 78101 transitions. Word has length 139 [2022-12-14 16:12:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:12:32,086 INFO L495 AbstractCegarLoop]: Abstraction has 62499 states and 78101 transitions. [2022-12-14 16:12:32,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 16:12:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 62499 states and 78101 transitions. [2022-12-14 16:12:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 16:12:32,106 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:12:32,106 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:12:32,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 16:12:32,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:12:32,308 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:12:32,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:12:32,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1233061740, now seen corresponding path program 1 times [2022-12-14 16:12:32,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:12:32,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730722133] [2022-12-14 16:12:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:12:32,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:12:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:12:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 21 proven. 50 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 16:12:32,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:12:32,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730722133] [2022-12-14 16:12:32,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730722133] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:12:32,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855197918] [2022-12-14 16:12:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:12:32,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:12:32,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:12:32,620 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:12:32,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 16:12:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:12:32,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 16:12:32,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:12:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 16:12:32,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:12:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-14 16:12:33,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855197918] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:12:33,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [306634395] [2022-12-14 16:12:33,146 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-12-14 16:12:33,146 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:12:33,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:12:33,154 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:12:33,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:12:42,603 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 129 for LOIs [2022-12-14 16:13:29,230 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 179 for LOIs [2022-12-14 16:13:40,965 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 145 for LOIs [2022-12-14 16:13:40,991 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 56 for LOIs [2022-12-14 16:13:41,003 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 48 for LOIs [2022-12-14 16:13:41,056 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 56 for LOIs [2022-12-14 16:13:46,205 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:14:00,269 WARN L233 SmtUtils]: Spent 12.99s on a formula simplification. DAG size of input: 654 DAG size of output: 605 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:14:22,337 WARN L233 SmtUtils]: Spent 17.16s on a formula simplification. DAG size of input: 975 DAG size of output: 657 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:14:29,592 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1908105#(and (<= ~m_st~0 2) (<= |ULTIMATE.start_eval_~tmp_ndt_1~0#1| 2147483647) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= |ULTIMATE.start_eval_~tmp_ndt_2~0#1| 0) (<= |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 2147483647) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= |ULTIMATE.start_eval_~tmp~0#1| 1) (= 0 ~t3_pc~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_1~0#1| 2147483648)) (= ~t1_st~0 0) (= ~m_i~0 1) (<= ~m_pc~0 1) (= 1 ~t4_st~0) (= |ULTIMATE.start_eval_~tmp_ndt_4~0#1| 0) (not (= |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 0)) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 2147483648)) (= ~t2_i~0 1) (= 0 ~t2_pc~0) (= |#NULL.offset| 0) (<= 0 ~m_pc~0) (= 1 ~t4_pc~0) (= 0 ~t2_st~0) (<= 0 ~m_st~0) (= ~t3_i~0 1) (= 0 ~t3_st~0) (= ~t4_i~0 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_eval_~tmp~0#1|) (= |ULTIMATE.start_eval_~tmp_ndt_3~0#1| 0) (= |#NULL.base| 0))' at error location [2022-12-14 16:14:29,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:14:29,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:14:29,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 20 [2022-12-14 16:14:29,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893513992] [2022-12-14 16:14:29,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:14:29,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 16:14:29,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:14:29,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 16:14:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=5292, Unknown=0, NotChecked=0, Total=5852 [2022-12-14 16:14:29,596 INFO L87 Difference]: Start difference. First operand 62499 states and 78101 transitions. Second operand has 20 states, 16 states have (on average 11.75) internal successors, (188), 18 states have internal predecessors, (188), 9 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-12-14 16:14:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:14:38,017 INFO L93 Difference]: Finished difference Result 116359 states and 148586 transitions. [2022-12-14 16:14:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-12-14 16:14:38,017 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 11.75) internal successors, (188), 18 states have internal predecessors, (188), 9 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 140 [2022-12-14 16:14:38,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:14:38,114 INFO L225 Difference]: With dead ends: 116359 [2022-12-14 16:14:38,114 INFO L226 Difference]: Without dead ends: 53866 [2022-12-14 16:14:38,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 424 SyntacticMatches, 5 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14904 ImplicationChecksByTransitivity, 44.7s TimeCoverageRelationStatistics Valid=2084, Invalid=31222, Unknown=0, NotChecked=0, Total=33306 [2022-12-14 16:14:38,180 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 3101 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 2884 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3125 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 3731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 2884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 16:14:38,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3125 Valid, 2870 Invalid, 3731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 2884 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 16:14:38,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53866 states. [2022-12-14 16:14:41,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53866 to 29815. [2022-12-14 16:14:41,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29815 states, 25280 states have (on average 1.2625) internal successors, (31916), 25336 states have internal predecessors, (31916), 2352 states have call successors, (2352), 2096 states have call predecessors, (2352), 2182 states have return successors, (2680), 2382 states have call predecessors, (2680), 2352 states have call successors, (2680) [2022-12-14 16:14:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29815 states to 29815 states and 36948 transitions. [2022-12-14 16:14:41,420 INFO L78 Accepts]: Start accepts. Automaton has 29815 states and 36948 transitions. Word has length 140 [2022-12-14 16:14:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:14:41,420 INFO L495 AbstractCegarLoop]: Abstraction has 29815 states and 36948 transitions. [2022-12-14 16:14:41,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 11.75) internal successors, (188), 18 states have internal predecessors, (188), 9 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-12-14 16:14:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 29815 states and 36948 transitions. [2022-12-14 16:14:41,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 16:14:41,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:14:41,432 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:14:41,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 16:14:41,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 16:14:41,634 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:14:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:14:41,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2000994237, now seen corresponding path program 1 times [2022-12-14 16:14:41,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:14:41,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796805556] [2022-12-14 16:14:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:14:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:14:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:14:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 16:14:41,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:14:41,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796805556] [2022-12-14 16:14:41,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796805556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:14:41,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:14:41,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 16:14:41,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820462248] [2022-12-14 16:14:41,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:14:41,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:14:41,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:14:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:14:41,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:14:41,701 INFO L87 Difference]: Start difference. First operand 29815 states and 36948 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 16:14:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:14:45,337 INFO L93 Difference]: Finished difference Result 57797 states and 72867 transitions. [2022-12-14 16:14:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:14:45,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2022-12-14 16:14:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:14:45,390 INFO L225 Difference]: With dead ends: 57797 [2022-12-14 16:14:45,391 INFO L226 Difference]: Without dead ends: 29789 [2022-12-14 16:14:45,421 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 [2022-12-14 16:14:45,421 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 191 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:14:45,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 308 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:14:45,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29789 states. [2022-12-14 16:14:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29789 to 29603. [2022-12-14 16:14:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29603 states, 25068 states have (on average 1.2275809797351205) internal successors, (30773), 25124 states have internal predecessors, (30773), 2352 states have call successors, (2352), 2096 states have call predecessors, (2352), 2182 states have return successors, (2680), 2382 states have call predecessors, (2680), 2352 states have call successors, (2680) [2022-12-14 16:14:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29603 states to 29603 states and 35805 transitions. [2022-12-14 16:14:48,509 INFO L78 Accepts]: Start accepts. Automaton has 29603 states and 35805 transitions. Word has length 141 [2022-12-14 16:14:48,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:14:48,509 INFO L495 AbstractCegarLoop]: Abstraction has 29603 states and 35805 transitions. [2022-12-14 16:14:48,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 16:14:48,509 INFO L276 IsEmpty]: Start isEmpty. Operand 29603 states and 35805 transitions. [2022-12-14 16:14:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 16:14:48,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:14:48,520 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, 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] [2022-12-14 16:14:48,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 16:14:48,520 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:14:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:14:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash -985968290, now seen corresponding path program 1 times [2022-12-14 16:14:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:14:48,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938809328] [2022-12-14 16:14:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:14:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:14:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:14:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 16:14:48,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:14:48,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938809328] [2022-12-14 16:14:48,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938809328] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:14:48,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644008718] [2022-12-14 16:14:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:14:48,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:14:48,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:14:48,650 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:14:48,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 16:14:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:14:48,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 16:14:48,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:14:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-14 16:14:48,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:14:48,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644008718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:14:48,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:14:48,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-12-14 16:14:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026367558] [2022-12-14 16:14:48,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:14:48,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:14:48,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:14:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:14:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-14 16:14:48,780 INFO L87 Difference]: Start difference. First operand 29603 states and 35805 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 16:14:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:14:54,054 INFO L93 Difference]: Finished difference Result 69670 states and 84584 transitions. [2022-12-14 16:14:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 16:14:54,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 141 [2022-12-14 16:14:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:14:54,134 INFO L225 Difference]: With dead ends: 69670 [2022-12-14 16:14:54,134 INFO L226 Difference]: Without dead ends: 46678 [2022-12-14 16:14:54,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:14:54,164 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 108 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:14:54,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 465 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:14:54,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46678 states. [2022-12-14 16:14:59,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46678 to 43888. [2022-12-14 16:14:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43888 states, 37160 states have (on average 1.2105489773950484) internal successors, (44984), 37608 states have internal predecessors, (44984), 3308 states have call successors, (3308), 2836 states have call predecessors, (3308), 3419 states have return successors, (4922), 3443 states have call predecessors, (4922), 3308 states have call successors, (4922) [2022-12-14 16:14:59,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43888 states to 43888 states and 53214 transitions. [2022-12-14 16:14:59,284 INFO L78 Accepts]: Start accepts. Automaton has 43888 states and 53214 transitions. Word has length 141 [2022-12-14 16:14:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:14:59,285 INFO L495 AbstractCegarLoop]: Abstraction has 43888 states and 53214 transitions. [2022-12-14 16:14:59,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 16:14:59,285 INFO L276 IsEmpty]: Start isEmpty. Operand 43888 states and 53214 transitions. [2022-12-14 16:14:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-14 16:14:59,299 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:14:59,299 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, 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] [2022-12-14 16:14:59,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 16:14:59,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 16:14:59,500 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:14:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:14:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1239700847, now seen corresponding path program 1 times [2022-12-14 16:14:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:14:59,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27521937] [2022-12-14 16:14:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:14:59,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:14:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:14:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 16:14:59,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:14:59,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27521937] [2022-12-14 16:14:59,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27521937] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:14:59,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118301075] [2022-12-14 16:14:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:14:59,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:14:59,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:14:59,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:14:59,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 16:14:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:14:59,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 16:14:59,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:14:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 16:14:59,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:15:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-14 16:15:00,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118301075] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:15:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1908352333] [2022-12-14 16:15:00,103 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-12-14 16:15:00,103 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:15:00,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:15:00,103 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:15:00,104 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:15:10,332 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 56 for LOIs [2022-12-14 16:15:10,348 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 56 for LOIs [2022-12-14 16:15:10,364 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 146 for LOIs [2022-12-14 16:15:10,389 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 32 for LOIs [2022-12-14 16:15:10,396 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 49 for LOIs [2022-12-14 16:15:10,445 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 66 for LOIs [2022-12-14 16:15:10,714 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:15:22,946 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2379041#(and (<= ~t1_pc~0 1) (<= ~m_st~0 2) (<= |ULTIMATE.start_eval_~tmp_ndt_1~0#1| 2147483647) (= ~t1_i~0 1) (<= |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 2147483647) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= |ULTIMATE.start_eval_~tmp~0#1| 1) (= 0 ~t3_pc~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_1~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_2~0#1| 2147483648)) (= ~m_i~0 1) (<= ~m_pc~0 1) (= 1 ~t4_st~0) (= |ULTIMATE.start_eval_~tmp_ndt_4~0#1| 0) (not (= |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 0)) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 2147483648)) (= ~t2_i~0 1) (<= ~t1_st~0 2) (= 0 ~t2_pc~0) (= |#NULL.offset| 0) (<= 0 ~m_pc~0) (= 1 ~t4_pc~0) (<= |ULTIMATE.start_eval_~tmp_ndt_2~0#1| 2147483647) (= 0 ~t2_st~0) (<= 0 ~m_st~0) (= ~t3_i~0 1) (= 0 ~t3_st~0) (= ~t4_i~0 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_eval_~tmp~0#1|) (= |ULTIMATE.start_eval_~tmp_ndt_3~0#1| 0) (<= 0 ~t1_st~0) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-12-14 16:15:22,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:15:22,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:15:22,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2022-12-14 16:15:22,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005617767] [2022-12-14 16:15:22,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:15:22,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 16:15:22,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:15:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 16:15:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=5476, Unknown=0, NotChecked=0, Total=6006 [2022-12-14 16:15:22,949 INFO L87 Difference]: Start difference. First operand 43888 states and 53214 transitions. Second operand has 17 states, 14 states have (on average 11.785714285714286) internal successors, (165), 15 states have internal predecessors, (165), 7 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-12-14 16:15:30,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:15:30,721 INFO L93 Difference]: Finished difference Result 82739 states and 102134 transitions. [2022-12-14 16:15:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-12-14 16:15:30,722 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 11.785714285714286) internal successors, (165), 15 states have internal predecessors, (165), 7 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 142 [2022-12-14 16:15:30,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:15:30,789 INFO L225 Difference]: With dead ends: 82739 [2022-12-14 16:15:30,790 INFO L226 Difference]: Without dead ends: 40724 [2022-12-14 16:15:30,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 411 SyntacticMatches, 10 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16966 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=2405, Invalid=34651, Unknown=0, NotChecked=0, Total=37056 [2022-12-14 16:15:30,836 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 2165 mSDsluCounter, 4095 mSDsCounter, 0 mSdLazyCounter, 2582 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:15:30,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 4586 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2582 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 16:15:30,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40724 states. [2022-12-14 16:15:34,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40724 to 30322. [2022-12-14 16:15:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30322 states, 25893 states have (on average 1.2246939327231299) internal successors, (31711), 26145 states have internal predecessors, (31711), 2108 states have call successors, (2108), 1912 states have call predecessors, (2108), 2320 states have return successors, (3014), 2264 states have call predecessors, (3014), 2108 states have call successors, (3014) [2022-12-14 16:15:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30322 states to 30322 states and 36833 transitions. [2022-12-14 16:15:34,262 INFO L78 Accepts]: Start accepts. Automaton has 30322 states and 36833 transitions. Word has length 142 [2022-12-14 16:15:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:15:34,262 INFO L495 AbstractCegarLoop]: Abstraction has 30322 states and 36833 transitions. [2022-12-14 16:15:34,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 11.785714285714286) internal successors, (165), 15 states have internal predecessors, (165), 7 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-12-14 16:15:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 30322 states and 36833 transitions. [2022-12-14 16:15:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-14 16:15:34,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:15:34,273 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, 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] [2022-12-14 16:15:34,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 16:15:34,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:34,474 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:15:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:15:34,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1010805903, now seen corresponding path program 1 times [2022-12-14 16:15:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:15:34,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111077704] [2022-12-14 16:15:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:34,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:15:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:15:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 16:15:34,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:15:34,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111077704] [2022-12-14 16:15:34,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111077704] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:15:34,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521299522] [2022-12-14 16:15:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:34,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:34,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:15:34,623 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:15:34,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 16:15:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:15:34,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 16:15:34,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:15:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 16:15:34,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:15:34,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521299522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:15:34,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:15:34,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-12-14 16:15:34,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847186160] [2022-12-14 16:15:34,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:15:34,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:15:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:15:34,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:15:34,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-14 16:15:34,777 INFO L87 Difference]: Start difference. First operand 30322 states and 36833 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 16:15:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:15:41,138 INFO L93 Difference]: Finished difference Result 79148 states and 96041 transitions. [2022-12-14 16:15:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 16:15:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 143 [2022-12-14 16:15:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:15:41,232 INFO L225 Difference]: With dead ends: 79148 [2022-12-14 16:15:41,232 INFO L226 Difference]: Without dead ends: 50060 [2022-12-14 16:15:41,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:15:41,266 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 102 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:15:41,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 441 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:15:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50060 states. [2022-12-14 16:15:46,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50060 to 45628. [2022-12-14 16:15:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45628 states, 38918 states have (on average 1.1964900560152114) internal successors, (46565), 39775 states have internal predecessors, (46565), 3032 states have call successors, (3032), 2640 states have call predecessors, (3032), 3677 states have return successors, (6154), 3212 states have call predecessors, (6154), 3032 states have call successors, (6154) [2022-12-14 16:15:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45628 states to 45628 states and 55751 transitions. [2022-12-14 16:15:46,561 INFO L78 Accepts]: Start accepts. Automaton has 45628 states and 55751 transitions. Word has length 143 [2022-12-14 16:15:46,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:15:46,562 INFO L495 AbstractCegarLoop]: Abstraction has 45628 states and 55751 transitions. [2022-12-14 16:15:46,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 16:15:46,562 INFO L276 IsEmpty]: Start isEmpty. Operand 45628 states and 55751 transitions. [2022-12-14 16:15:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-14 16:15:46,577 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:15:46,577 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, 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] [2022-12-14 16:15:46,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 16:15:46,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 16:15:46,779 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:15:46,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:15:46,780 INFO L85 PathProgramCache]: Analyzing trace with hash 887724402, now seen corresponding path program 1 times [2022-12-14 16:15:46,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:15:46,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965902668] [2022-12-14 16:15:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:46,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:15:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:15:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 16:15:46,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:15:46,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965902668] [2022-12-14 16:15:46,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965902668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:15:46,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:15:46,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 16:15:46,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041474308] [2022-12-14 16:15:46,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:15:46,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:15:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:15:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:15:46,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:15:46,831 INFO L87 Difference]: Start difference. First operand 45628 states and 55751 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 16:15:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:15:52,863 INFO L93 Difference]: Finished difference Result 89650 states and 112114 transitions. [2022-12-14 16:15:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:15:52,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 143 [2022-12-14 16:15:52,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:15:52,946 INFO L225 Difference]: With dead ends: 89650 [2022-12-14 16:15:52,946 INFO L226 Difference]: Without dead ends: 45252 [2022-12-14 16:15:53,000 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 [2022-12-14 16:15:53,001 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 187 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:15:53,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 290 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:15:53,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45252 states. [2022-12-14 16:15:58,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45252 to 45092. [2022-12-14 16:15:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45092 states, 38430 states have (on average 1.156856622430393) internal successors, (44458), 39287 states have internal predecessors, (44458), 3008 states have call successors, (3008), 2616 states have call predecessors, (3008), 3653 states have return successors, (6130), 3188 states have call predecessors, (6130), 3008 states have call successors, (6130) [2022-12-14 16:15:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45092 states to 45092 states and 53596 transitions. [2022-12-14 16:15:58,544 INFO L78 Accepts]: Start accepts. Automaton has 45092 states and 53596 transitions. Word has length 143 [2022-12-14 16:15:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:15:58,544 INFO L495 AbstractCegarLoop]: Abstraction has 45092 states and 53596 transitions. [2022-12-14 16:15:58,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 16:15:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 45092 states and 53596 transitions. [2022-12-14 16:15:58,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 16:15:58,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:15:58,560 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, 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] [2022-12-14 16:15:58,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 16:15:58,561 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:15:58,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:15:58,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1822540198, now seen corresponding path program 1 times [2022-12-14 16:15:58,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:15:58,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383755273] [2022-12-14 16:15:58,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:58,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:15:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:15:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 29 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 16:15:58,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:15:58,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383755273] [2022-12-14 16:15:58,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383755273] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:15:58,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029705146] [2022-12-14 16:15:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:58,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:15:58,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:15:58,725 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:15:58,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 16:15:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:15:58,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 16:15:58,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:15:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 70 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 16:15:58,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:15:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-12-14 16:15:59,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029705146] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:15:59,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1530544106] [2022-12-14 16:15:59,245 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2022-12-14 16:15:59,245 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:15:59,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:15:59,246 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:15:59,246 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:16:12,547 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 52 for LOIs [2022-12-14 16:16:12,559 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 52 for LOIs [2022-12-14 16:16:12,572 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 143 for LOIs [2022-12-14 16:16:12,596 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 29 for LOIs [2022-12-14 16:16:12,602 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 47 for LOIs [2022-12-14 16:16:12,648 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 53 for LOIs [2022-12-14 16:16:12,864 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:16:22,174 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2881802#(and (<= ~m_st~0 2) (<= |ULTIMATE.start_eval_~tmp_ndt_1~0#1| 2147483647) (= ~t1_i~0 1) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_3~0#1| 2147483648)) (<= 0 ~t2_pc~0) (<= |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 2147483647) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= |ULTIMATE.start_eval_~tmp~0#1| 1) (<= |ULTIMATE.start_eval_~tmp_ndt_3~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_1~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_2~0#1| 2147483648)) (= 1 ~t4_st~0) (<= 1 ~m_i~0) (<= ~t3_st~0 0) (= |ULTIMATE.start_eval_~tmp_ndt_4~0#1| 0) (not (= |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 0)) (<= 0 ~t3_st~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 2147483648)) (= ~t2_i~0 1) (<= ~t1_st~0 2) (<= ~t2_st~0 2) (<= ~m_i~0 1) (<= ~t3_pc~0 0) (= |#NULL.offset| 0) (<= 0 ~m_pc~0) (= 1 ~t4_pc~0) (<= 0 ~t2_st~0) (<= 0 ~t3_pc~0) (<= |ULTIMATE.start_eval_~tmp_ndt_2~0#1| 2147483647) (<= 0 ~m_st~0) (= ~t3_i~0 1) (= ~t4_i~0 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_eval_~tmp~0#1|) (<= 0 ~t1_st~0) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-12-14 16:16:22,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:16:22,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:16:22,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 18 [2022-12-14 16:16:22,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220734578] [2022-12-14 16:16:22,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:16:22,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 16:16:22,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:16:22,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 16:16:22,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=6227, Unknown=0, NotChecked=0, Total=6806 [2022-12-14 16:16:22,178 INFO L87 Difference]: Start difference. First operand 45092 states and 53596 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, (30), 4 states have call predecessors, (30), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-12-14 16:16:29,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:16:29,819 INFO L93 Difference]: Finished difference Result 80294 states and 96165 transitions. [2022-12-14 16:16:29,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-12-14 16:16:29,820 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, (30), 4 states have call predecessors, (30), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 144 [2022-12-14 16:16:29,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:16:29,889 INFO L225 Difference]: With dead ends: 80294 [2022-12-14 16:16:29,889 INFO L226 Difference]: Without dead ends: 38654 [2022-12-14 16:16:29,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 400 SyntacticMatches, 10 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16896 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=2404, Invalid=35038, Unknown=0, NotChecked=0, Total=37442 [2022-12-14 16:16:29,943 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1276 mSDsluCounter, 4423 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 4848 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:16:29,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 4848 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 16:16:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38654 states. [2022-12-14 16:16:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38654 to 32801. [2022-12-14 16:16:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32801 states, 28051 states have (on average 1.1589604648675627) internal successors, (32510), 28603 states have internal predecessors, (32510), 2094 states have call successors, (2094), 1886 states have call predecessors, (2094), 2655 states have return successors, (4063), 2311 states have call predecessors, (4063), 2094 states have call successors, (4063) [2022-12-14 16:16:33,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32801 states to 32801 states and 38667 transitions. [2022-12-14 16:16:33,786 INFO L78 Accepts]: Start accepts. Automaton has 32801 states and 38667 transitions. Word has length 144 [2022-12-14 16:16:33,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:16:33,786 INFO L495 AbstractCegarLoop]: Abstraction has 32801 states and 38667 transitions. [2022-12-14 16:16:33,786 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, (30), 4 states have call predecessors, (30), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-12-14 16:16:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 32801 states and 38667 transitions. [2022-12-14 16:16:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 16:16:33,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:16:33,796 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:16:33,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 16:16:33,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:16:33,997 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:16:33,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:16:33,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2120520408, now seen corresponding path program 1 times [2022-12-14 16:16:33,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:16:33,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11562370] [2022-12-14 16:16:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:16:33,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:16:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:16:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 35 proven. 29 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 16:16:34,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:16:34,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11562370] [2022-12-14 16:16:34,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11562370] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:16:34,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468518657] [2022-12-14 16:16:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:16:34,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:16:34,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:16:34,174 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:16:34,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 16:16:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:16:34,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 16:16:34,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:16:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 16:16:34,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:16:34,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468518657] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:16:34,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:16:34,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-12-14 16:16:34,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690329078] [2022-12-14 16:16:34,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:16:34,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 16:16:34,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:16:34,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 16:16:34,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:16:34,303 INFO L87 Difference]: Start difference. First operand 32801 states and 38667 transitions. Second operand has 5 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 16:16:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:16:37,275 INFO L93 Difference]: Finished difference Result 51260 states and 61183 transitions. [2022-12-14 16:16:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 16:16:37,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 146 [2022-12-14 16:16:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:16:37,313 INFO L225 Difference]: With dead ends: 51260 [2022-12-14 16:16:37,313 INFO L226 Difference]: Without dead ends: 24239 [2022-12-14 16:16:37,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-14 16:16:37,348 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 169 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:16:37,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 161 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:16:37,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24239 states. [2022-12-14 16:16:39,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24239 to 23071. [2022-12-14 16:16:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23071 states, 19716 states have (on average 1.157739906674782) internal successors, (22826), 19923 states have internal predecessors, (22826), 1568 states have call successors, (1568), 1456 states have call predecessors, (1568), 1786 states have return successors, (2248), 1691 states have call predecessors, (2248), 1568 states have call successors, (2248) [2022-12-14 16:16:40,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23071 states to 23071 states and 26642 transitions. [2022-12-14 16:16:40,035 INFO L78 Accepts]: Start accepts. Automaton has 23071 states and 26642 transitions. Word has length 146 [2022-12-14 16:16:40,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:16:40,036 INFO L495 AbstractCegarLoop]: Abstraction has 23071 states and 26642 transitions. [2022-12-14 16:16:40,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 16:16:40,036 INFO L276 IsEmpty]: Start isEmpty. Operand 23071 states and 26642 transitions. [2022-12-14 16:16:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 16:16:40,045 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:16:40,045 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, 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] [2022-12-14 16:16:40,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 16:16:40,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:16:40,246 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:16:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:16:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1505752020, now seen corresponding path program 1 times [2022-12-14 16:16:40,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:16:40,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76771111] [2022-12-14 16:16:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:16:40,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:16:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:16:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 32 proven. 37 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 16:16:40,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:16:40,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76771111] [2022-12-14 16:16:40,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76771111] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:16:40,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801848844] [2022-12-14 16:16:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:16:40,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:16:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:16:40,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:16:40,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 16:16:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:16:40,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 16:16:40,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:16:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 16:16:40,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:16:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 16:16:41,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801848844] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:16:41,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [657287894] [2022-12-14 16:16:41,451 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-12-14 16:16:41,451 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:16:41,452 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:16:41,452 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:16:41,452 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:17:13,033 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 53 for LOIs [2022-12-14 16:17:13,049 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 53 for LOIs [2022-12-14 16:17:13,064 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 148 for LOIs [2022-12-14 16:17:13,090 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 34 for LOIs [2022-12-14 16:17:13,098 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 51 for LOIs [2022-12-14 16:17:13,146 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 66 for LOIs [2022-12-14 16:17:13,385 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:17:25,539 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3133883#(and (<= ~t2_i~0 1) (<= ~t1_pc~0 1) (<= ~m_st~0 2) (<= 1 |ULTIMATE.start_start_simulation_~kernel_st~0#1|) (<= ~t4_st~0 1) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_eval_~tmp_ndt_1~0#1| 2147483647) (<= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~t3_i~0 1) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_3~0#1| 2147483648)) (<= 0 ~t2_pc~0) (<= 1 ~t1_i~0) (<= 1 ~t4_i~0) (<= |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 2147483647) (<= |ULTIMATE.start_eval_~tmp~0#1| 1) (<= |ULTIMATE.start_eval_~tmp_ndt_3~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_1~0#1| 2147483648)) (<= |#NULL.offset| 0) (<= 1 ~t2_i~0) (<= ~t2_pc~0 1) (<= ~m_pc~0 1) (<= ~t3_pc~0 1) (<= 1 ~m_i~0) (not (= |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 0)) (<= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 2147483648)) (<= 1 ~t4_st~0) (<= ~t2_st~0 2) (<= ~m_i~0 1) (<= 0 ~m_pc~0) (= 1 ~t4_pc~0) (<= 0 ~t2_st~0) (<= 0 ~t3_pc~0) (<= ~t4_i~0 1) (<= 0 ~m_st~0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_eval_~tmp~0#1|) (<= 1 ~t3_i~0) (<= ~t1_i~0 1) (<= 0 ~t1_pc~0))' at error location [2022-12-14 16:17:25,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:17:25,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:17:25,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 12] total 37 [2022-12-14 16:17:25,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391530742] [2022-12-14 16:17:25,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:17:25,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-14 16:17:25,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:17:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-14 16:17:25,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=10215, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 16:17:25,542 INFO L87 Difference]: Start difference. First operand 23071 states and 26642 transitions. Second operand has 37 states, 25 states have (on average 9.6) internal successors, (240), 28 states have internal predecessors, (240), 14 states have call successors, (40), 11 states have call predecessors, (40), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2022-12-14 16:17:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:17:37,037 INFO L93 Difference]: Finished difference Result 62540 states and 76139 transitions. [2022-12-14 16:17:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-14 16:17:37,037 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 25 states have (on average 9.6) internal successors, (240), 28 states have internal predecessors, (240), 14 states have call successors, (40), 11 states have call predecessors, (40), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) Word has length 146 [2022-12-14 16:17:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:17:37,100 INFO L225 Difference]: With dead ends: 62540 [2022-12-14 16:17:37,100 INFO L226 Difference]: Without dead ends: 41015 [2022-12-14 16:17:37,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 359 SyntacticMatches, 16 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13213 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=2923, Invalid=27877, Unknown=0, NotChecked=0, Total=30800 [2022-12-14 16:17:37,139 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 5417 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 4110 mSolverCounterSat, 2496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5417 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 6606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2496 IncrementalHoareTripleChecker+Valid, 4110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:17:37,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5417 Valid, 2040 Invalid, 6606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2496 Valid, 4110 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 16:17:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41015 states. [2022-12-14 16:17:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41015 to 17206. [2022-12-14 16:17:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17206 states, 14722 states have (on average 1.1597609020513517) internal successors, (17074), 14797 states have internal predecessors, (17074), 1192 states have call successors, (1192), 1140 states have call predecessors, (1192), 1291 states have return successors, (1412), 1268 states have call predecessors, (1412), 1192 states have call successors, (1412) [2022-12-14 16:17:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17206 states to 17206 states and 19678 transitions. [2022-12-14 16:17:39,791 INFO L78 Accepts]: Start accepts. Automaton has 17206 states and 19678 transitions. Word has length 146 [2022-12-14 16:17:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:17:39,791 INFO L495 AbstractCegarLoop]: Abstraction has 17206 states and 19678 transitions. [2022-12-14 16:17:39,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 25 states have (on average 9.6) internal successors, (240), 28 states have internal predecessors, (240), 14 states have call successors, (40), 11 states have call predecessors, (40), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2022-12-14 16:17:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 17206 states and 19678 transitions. [2022-12-14 16:17:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 16:17:39,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:17:39,797 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] [2022-12-14 16:17:39,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 16:17:39,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-14 16:17:39,999 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:17:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:17:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1770873359, now seen corresponding path program 1 times [2022-12-14 16:17:40,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:17:40,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095628998] [2022-12-14 16:17:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:17:40,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:17:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:17:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 16:17:40,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:17:40,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095628998] [2022-12-14 16:17:40,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095628998] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:17:40,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111092747] [2022-12-14 16:17:40,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:17:40,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:17:40,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:17:40,418 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:17:40,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 16:17:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:17:40,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 16:17:40,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:17:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 16:17:40,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:17:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-14 16:17:41,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111092747] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:17:41,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [601728875] [2022-12-14 16:17:41,138 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-12-14 16:17:41,138 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:17:41,139 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:17:41,139 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:17:41,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:18:10,756 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 53 for LOIs [2022-12-14 16:18:10,770 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 53 for LOIs [2022-12-14 16:18:10,783 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 148 for LOIs [2022-12-14 16:18:10,809 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 34 for LOIs [2022-12-14 16:18:10,816 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 73 for LOIs [2022-12-14 16:18:10,938 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 56 for LOIs [2022-12-14 16:18:11,151 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:18:20,324 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3240548#(and (<= ~t1_pc~0 1) (<= ~t3_i~0 1) (<= 0 ~t2_pc~0) (<= 1 ~t1_i~0) (<= 1 ~t4_i~0) (<= |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 2147483647) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= |ULTIMATE.start_eval_~tmp~0#1| 1) (<= |#NULL.offset| 0) (<= ~t2_pc~0 1) (<= ~m_pc~0 1) (<= ~t3_pc~0 1) (= 1 ~t4_st~0) (<= 1 ~m_i~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp_ndt_5~0#1| 2147483648)) (= ~t2_i~0 1) (<= ~m_i~0 1) (<= 0 ~m_pc~0) (= 1 ~t4_pc~0) (<= 0 ~t3_pc~0) (<= ~t4_i~0 1) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_eval_~tmp~0#1|) (<= 1 ~t3_i~0) (<= ~t1_i~0 1) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-12-14 16:18:20,324 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:18:20,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:18:20,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 12] total 33 [2022-12-14 16:18:20,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926133612] [2022-12-14 16:18:20,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:18:20,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-14 16:18:20,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:18:20,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-14 16:18:20,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=8089, Unknown=0, NotChecked=0, Total=8742 [2022-12-14 16:18:20,326 INFO L87 Difference]: Start difference. First operand 17206 states and 19678 transitions. Second operand has 33 states, 21 states have (on average 10.952380952380953) internal successors, (230), 26 states have internal predecessors, (230), 13 states have call successors, (39), 9 states have call predecessors, (39), 17 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2022-12-14 16:18:30,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:18:30,592 INFO L93 Difference]: Finished difference Result 42897 states and 51075 transitions. [2022-12-14 16:18:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-14 16:18:30,593 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 21 states have (on average 10.952380952380953) internal successors, (230), 26 states have internal predecessors, (230), 13 states have call successors, (39), 9 states have call predecessors, (39), 17 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) Word has length 146 [2022-12-14 16:18:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:18:30,648 INFO L225 Difference]: With dead ends: 42897 [2022-12-14 16:18:30,648 INFO L226 Difference]: Without dead ends: 39293 [2022-12-14 16:18:30,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 345 SyntacticMatches, 35 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11946 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=2566, Invalid=22240, Unknown=0, NotChecked=0, Total=24806 [2022-12-14 16:18:30,660 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 2497 mSDsluCounter, 2178 mSDsCounter, 0 mSdLazyCounter, 4343 mSolverCounterSat, 1272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2499 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 5615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1272 IncrementalHoareTripleChecker+Valid, 4343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:18:30,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2499 Valid, 2339 Invalid, 5615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1272 Valid, 4343 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 16:18:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39293 states. [2022-12-14 16:18:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39293 to 15703. [2022-12-14 16:18:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15703 states, 13458 states have (on average 1.1590132263337791) internal successors, (15598), 13521 states have internal predecessors, (15598), 1082 states have call successors, (1082), 1036 states have call predecessors, (1082), 1162 states have return successors, (1256), 1145 states have call predecessors, (1256), 1082 states have call successors, (1256) [2022-12-14 16:18:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15703 states to 15703 states and 17936 transitions. [2022-12-14 16:18:33,391 INFO L78 Accepts]: Start accepts. Automaton has 15703 states and 17936 transitions. Word has length 146 [2022-12-14 16:18:33,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:18:33,391 INFO L495 AbstractCegarLoop]: Abstraction has 15703 states and 17936 transitions. [2022-12-14 16:18:33,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 21 states have (on average 10.952380952380953) internal successors, (230), 26 states have internal predecessors, (230), 13 states have call successors, (39), 9 states have call predecessors, (39), 17 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2022-12-14 16:18:33,391 INFO L276 IsEmpty]: Start isEmpty. Operand 15703 states and 17936 transitions. [2022-12-14 16:18:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-14 16:18:33,398 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:18:33,398 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2022-12-14 16:18:33,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 16:18:33,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-14 16:18:33,600 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:18:33,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:18:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash -971115821, now seen corresponding path program 1 times [2022-12-14 16:18:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:18:33,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505550072] [2022-12-14 16:18:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:18:33,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:18:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:18:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 36 proven. 44 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-14 16:18:33,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:18:33,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505550072] [2022-12-14 16:18:33,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505550072] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:18:33,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555170311] [2022-12-14 16:18:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:18:33,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:18:33,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:18:33,723 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:18:33,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 16:18:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:18:33,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 16:18:33,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:18:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 16:18:33,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:18:33,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555170311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:18:33,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:18:33,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-12-14 16:18:33,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923406634] [2022-12-14 16:18:33,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:18:33,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 16:18:33,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:18:33,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 16:18:33,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:18:33,861 INFO L87 Difference]: Start difference. First operand 15703 states and 17936 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-14 16:18:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:18:36,167 INFO L93 Difference]: Finished difference Result 26274 states and 29903 transitions. [2022-12-14 16:18:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 16:18:36,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 156 [2022-12-14 16:18:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:18:36,183 INFO L225 Difference]: With dead ends: 26274 [2022-12-14 16:18:36,183 INFO L226 Difference]: Without dead ends: 12286 [2022-12-14 16:18:36,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:18:36,195 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 223 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:18:36,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 414 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:18:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12286 states. [2022-12-14 16:18:38,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12286 to 10296. [2022-12-14 16:18:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10296 states, 8811 states have (on average 1.1203041652479855) internal successors, (9871), 8853 states have internal predecessors, (9871), 712 states have call successors, (712), 676 states have call predecessors, (712), 772 states have return successors, (844), 766 states have call predecessors, (844), 712 states have call successors, (844) [2022-12-14 16:18:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10296 states to 10296 states and 11427 transitions. [2022-12-14 16:18:38,118 INFO L78 Accepts]: Start accepts. Automaton has 10296 states and 11427 transitions. Word has length 156 [2022-12-14 16:18:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:18:38,118 INFO L495 AbstractCegarLoop]: Abstraction has 10296 states and 11427 transitions. [2022-12-14 16:18:38,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-14 16:18:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 10296 states and 11427 transitions. [2022-12-14 16:18:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-12-14 16:18:38,122 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:18:38,123 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:18:38,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-14 16:18:38,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-14 16:18:38,324 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:18:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:18:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1667553196, now seen corresponding path program 1 times [2022-12-14 16:18:38,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:18:38,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237705174] [2022-12-14 16:18:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:18:38,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:18:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:18:38,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 16:18:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:18:38,418 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 16:18:38,418 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 16:18:38,419 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 16:18:38,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-14 16:18:38,422 INFO L445 BasicCegarLoop]: Path program 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] [2022-12-14 16:18:38,425 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 16:18:38,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:18:38 BoogieIcfgContainer [2022-12-14 16:18:38,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 16:18:38,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 16:18:38,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 16:18:38,532 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 16:18:38,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:10:57" (3/4) ... [2022-12-14 16:18:38,534 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 16:18:38,653 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 16:18:38,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 16:18:38,653 INFO L158 Benchmark]: Toolchain (without parser) took 462110.84ms. Allocated memory was 107.0MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 72.6MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2022-12-14 16:18:38,653 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:18:38,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.30ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 57.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 16:18:38,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.87ms. Allocated memory is still 107.0MB. Free memory was 57.3MB in the beginning and 54.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:18:38,654 INFO L158 Benchmark]: Boogie Preprocessor took 23.20ms. Allocated memory is still 107.0MB. Free memory was 54.8MB in the beginning and 52.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:18:38,654 INFO L158 Benchmark]: RCFGBuilder took 651.29ms. Allocated memory was 107.0MB in the beginning and 146.8MB in the end (delta: 39.8MB). Free memory was 52.5MB in the beginning and 71.3MB in the end (delta: -18.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 16:18:38,654 INFO L158 Benchmark]: TraceAbstraction took 461058.40ms. Allocated memory was 146.8MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 70.5MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2022-12-14 16:18:38,655 INFO L158 Benchmark]: Witness Printer took 121.27ms. Allocated memory is still 4.2GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 16:18:38,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.30ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 57.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.87ms. Allocated memory is still 107.0MB. Free memory was 57.3MB in the beginning and 54.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.20ms. Allocated memory is still 107.0MB. Free memory was 54.8MB in the beginning and 52.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 651.29ms. Allocated memory was 107.0MB in the beginning and 146.8MB in the end (delta: 39.8MB). Free memory was 52.5MB in the beginning and 71.3MB in the end (delta: -18.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 461058.40ms. Allocated memory was 146.8MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 70.5MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 121.27ms. Allocated memory is still 4.2GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * 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: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int m_pc = 0; [L26] int t1_pc = 0; [L27] int t2_pc = 0; [L28] int t3_pc = 0; [L29] int t4_pc = 0; [L30] int m_st ; [L31] int t1_st ; [L32] int t2_st ; [L33] int t3_st ; [L34] int t4_st ; [L35] int m_i ; [L36] int t1_i ; [L37] int t2_i ; [L38] int t3_i ; [L39] int t4_i ; [L40] int M_E = 2; [L41] int T1_E = 2; [L42] int T2_E = 2; [L43] int T3_E = 2; [L44] int T4_E = 2; [L45] int E_1 = 2; [L46] int E_2 = 2; [L47] int E_3 = 2; [L48] int E_4 = 2; [L821] int __retres1 ; [L825] CALL init_model() [L733] m_i = 1 [L734] t1_i = 1 [L735] t2_i = 1 [L736] t3_i = 1 [L737] t4_i = 1 [L825] RET init_model() [L826] CALL start_simulation() [L762] int kernel_st ; [L763] int tmp ; [L764] int tmp___0 ; [L768] kernel_st = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L769] FCALL update_channels() VAL [E_1=2, E_2=2, E_3=2, E_4=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L770] CALL init_threads() [L341] COND TRUE m_i == 1 [L342] m_st = 0 [L346] COND TRUE t1_i == 1 [L347] t1_st = 0 [L351] COND TRUE t2_i == 1 [L352] t2_st = 0 [L356] COND TRUE t3_i == 1 [L357] t3_st = 0 [L361] COND TRUE t4_i == 1 [L362] t4_st = 0 [L770] RET init_threads() [L771] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_4)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, \old(T4_E)=2, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L502] COND FALSE !(M_E == 0) [L507] COND FALSE !(T1_E == 0) [L512] COND FALSE !(T2_E == 0) [L517] COND FALSE !(T3_E == 0) [L522] COND FALSE !(T4_E == 0) [L527] COND FALSE !(E_1 == 0) [L532] COND FALSE !(E_2 == 0) [L537] COND FALSE !(E_3 == 0) [L542] COND FALSE !(E_4 == 0) [L771] RET fire_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_4=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L772] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L605] int tmp ; [L606] int tmp___0 ; [L607] int tmp___1 ; [L608] int tmp___2 ; [L609] int tmp___3 ; [L613] CALL, EXPR is_master_triggered() [L235] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L238] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L248] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L250] return (__retres1); [L613] RET, EXPR is_master_triggered() [L613] tmp = is_master_triggered() [L615] COND FALSE !(\read(tmp)) [L621] CALL, EXPR is_transmit1_triggered() [L254] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L257] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L267] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L269] return (__retres1); [L621] RET, EXPR is_transmit1_triggered() [L621] tmp___0 = is_transmit1_triggered() [L623] COND FALSE !(\read(tmp___0)) [L629] CALL, EXPR is_transmit2_triggered() [L273] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L276] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L286] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L288] return (__retres1); [L629] RET, EXPR is_transmit2_triggered() [L629] tmp___1 = is_transmit2_triggered() [L631] COND FALSE !(\read(tmp___1)) [L637] CALL, EXPR is_transmit3_triggered() [L292] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L295] COND FALSE !(t3_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L305] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L307] return (__retres1); [L637] RET, EXPR is_transmit3_triggered() [L637] tmp___2 = is_transmit3_triggered() [L639] COND FALSE !(\read(tmp___2)) [L645] CALL, EXPR is_transmit4_triggered() [L311] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L314] COND FALSE !(t4_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L324] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L326] return (__retres1); [L645] RET, EXPR is_transmit4_triggered() [L645] tmp___3 = is_transmit4_triggered() [L647] COND FALSE !(\read(tmp___3)) [L772] RET activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L773] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_4)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, \old(T4_E)=2, E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L555] COND FALSE !(M_E == 1) [L560] COND FALSE !(T1_E == 1) [L565] COND FALSE !(T2_E == 1) [L570] COND FALSE !(T3_E == 1) [L575] COND FALSE !(T4_E == 1) [L580] COND FALSE !(E_1 == 1) [L585] COND FALSE !(E_2 == 1) [L590] COND FALSE !(E_3 == 1) [L595] COND FALSE !(E_4 == 1) [L773] RET reset_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_4=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L776] COND TRUE 1 [L779] kernel_st = 1 [L780] CALL eval() [L407] int tmp ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L411] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L414] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L371] int __retres1 ; [L374] COND TRUE m_st == 0 [L375] __retres1 = 1 [L402] return (__retres1); [L414] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, exists_runnable_thread()=1, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L414] tmp = exists_runnable_thread() [L416] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0, tmp=1] [L421] COND TRUE m_st == 0 [L422] int tmp_ndt_1; [L423] tmp_ndt_1 = __VERIFIER_nondet_int() [L424] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0, tmp=1, tmp_ndt_1=0] [L435] COND TRUE t1_st == 0 [L436] int tmp_ndt_2; [L437] tmp_ndt_2 = __VERIFIER_nondet_int() [L438] COND TRUE \read(tmp_ndt_2) [L440] t1_st = 1 [L441] CALL transmit1() [L100] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L111] COND TRUE 1 [L113] t1_pc = 1 [L114] t1_st = 2 [L441] RET transmit1() [L449] COND TRUE t2_st == 0 [L450] int tmp_ndt_3; [L451] tmp_ndt_3 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp_ndt_3) [L454] t2_st = 1 [L455] CALL transmit2() [L135] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L146] COND TRUE 1 [L148] t2_pc = 1 [L149] t2_st = 2 [L455] RET transmit2() [L463] COND TRUE t3_st == 0 [L464] int tmp_ndt_4; [L465] tmp_ndt_4 = __VERIFIER_nondet_int() [L466] COND TRUE \read(tmp_ndt_4) [L468] t3_st = 1 [L469] CALL transmit3() [L170] COND TRUE t3_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=0, t3_st=1, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L181] COND TRUE 1 [L183] t3_pc = 1 [L184] t3_st = 2 [L469] RET transmit3() [L477] COND TRUE t4_st == 0 [L478] int tmp_ndt_5; [L479] tmp_ndt_5 = __VERIFIER_nondet_int() [L480] COND TRUE \read(tmp_ndt_5) [L482] t4_st = 1 [L483] CALL transmit4() [L205] COND TRUE t4_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=0, t4_st=1] [L216] COND TRUE 1 [L218] t4_pc = 1 [L219] t4_st = 2 [L483] RET transmit4() [L411] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1, tmp_ndt_3=-1, tmp_ndt_4=1, tmp_ndt_5=-2] [L414] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L371] int __retres1 ; [L374] COND TRUE m_st == 0 [L375] __retres1 = 1 [L402] return (__retres1); [L414] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, exists_runnable_thread()=1, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1, tmp_ndt_3=-1, tmp_ndt_4=1, tmp_ndt_5=-2] [L414] tmp = exists_runnable_thread() [L416] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1, tmp_ndt_3=-1, tmp_ndt_4=1, tmp_ndt_5=-2] [L421] COND TRUE m_st == 0 [L422] int tmp_ndt_1; [L423] tmp_ndt_1 = __VERIFIER_nondet_int() [L424] COND TRUE \read(tmp_ndt_1) [L426] m_st = 1 [L427] CALL master() [L59] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L70] COND TRUE 1 [L73] E_1 = 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L74] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L661] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L605] int tmp ; [L606] int tmp___0 ; [L607] int tmp___1 ; [L608] int tmp___2 ; [L609] int tmp___3 ; [L613] CALL, EXPR is_master_triggered() [L235] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L238] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L248] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L250] return (__retres1); [L613] RET, EXPR is_master_triggered() [L613] tmp = is_master_triggered() [L615] COND FALSE !(\read(tmp)) [L621] CALL, EXPR is_transmit1_triggered() [L254] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L257] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L258] COND TRUE E_1 == 1 [L259] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=1, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L269] return (__retres1); [L621] RET, EXPR is_transmit1_triggered() [L621] tmp___0 = is_transmit1_triggered() [L623] COND TRUE \read(tmp___0) [L624] t1_st = 0 [L629] CALL, EXPR is_transmit2_triggered() [L273] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L276] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L277] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L286] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L288] return (__retres1); [L629] RET, EXPR is_transmit2_triggered() [L629] tmp___1 = is_transmit2_triggered() [L631] COND FALSE !(\read(tmp___1)) [L637] CALL, EXPR is_transmit3_triggered() [L292] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L295] COND TRUE t3_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L296] COND FALSE !(E_3 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L305] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L307] return (__retres1); [L637] RET, EXPR is_transmit3_triggered() [L637] tmp___2 = is_transmit3_triggered() [L639] COND FALSE !(\read(tmp___2)) [L645] CALL, EXPR is_transmit4_triggered() [L311] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L314] COND TRUE t4_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L315] COND FALSE !(E_4 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L324] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L326] return (__retres1); [L645] RET, EXPR is_transmit4_triggered() [L645] tmp___3 = is_transmit4_triggered() [L647] COND FALSE !(\read(tmp___3)) [L661] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L74] RET immediate_notify() VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L75] E_1 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L78] COND TRUE 1 [L80] m_pc = 1 [L81] m_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L427] RET master() [L435] COND TRUE t1_st == 0 [L436] int tmp_ndt_2; [L437] tmp_ndt_2 = __VERIFIER_nondet_int() [L438] COND TRUE \read(tmp_ndt_2) [L440] t1_st = 1 [L441] CALL transmit1() [L100] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L103] COND TRUE t1_pc == 1 [L119] E_2 = 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L120] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L661] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L605] int tmp ; [L606] int tmp___0 ; [L607] int tmp___1 ; [L608] int tmp___2 ; [L609] int tmp___3 ; [L613] CALL, EXPR is_master_triggered() [L235] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L238] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L239] COND FALSE !(M_E == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L248] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L250] return (__retres1); [L613] RET, EXPR is_master_triggered() [L613] tmp = is_master_triggered() [L615] COND FALSE !(\read(tmp)) [L621] CALL, EXPR is_transmit1_triggered() [L254] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L257] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L258] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L267] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L269] return (__retres1); [L621] RET, EXPR is_transmit1_triggered() [L621] tmp___0 = is_transmit1_triggered() [L623] COND FALSE !(\read(tmp___0)) [L629] CALL, EXPR is_transmit2_triggered() [L273] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L276] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L277] COND TRUE E_2 == 1 [L278] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=1, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L288] return (__retres1); [L629] RET, EXPR is_transmit2_triggered() [L629] tmp___1 = is_transmit2_triggered() [L631] COND TRUE \read(tmp___1) [L632] t2_st = 0 [L637] CALL, EXPR is_transmit3_triggered() [L292] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L295] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L296] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L305] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L307] return (__retres1); [L637] RET, EXPR is_transmit3_triggered() [L637] tmp___2 = is_transmit3_triggered() [L639] COND FALSE !(\read(tmp___2)) [L645] CALL, EXPR is_transmit4_triggered() [L311] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L314] COND TRUE t4_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L315] COND FALSE !(E_4 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L324] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L326] return (__retres1); [L645] RET, EXPR is_transmit4_triggered() [L645] tmp___3 = is_transmit4_triggered() [L647] COND FALSE !(\read(tmp___3)) [L661] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L120] RET immediate_notify() VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L121] E_2 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L111] COND TRUE 1 [L113] t1_pc = 1 [L114] t1_st = 2 [L441] RET transmit1() [L449] COND TRUE t2_st == 0 [L450] int tmp_ndt_3; [L451] tmp_ndt_3 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp_ndt_3) [L454] t2_st = 1 [L455] CALL transmit2() [L135] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L138] COND TRUE t2_pc == 1 [L154] E_3 = 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L155] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L661] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L605] int tmp ; [L606] int tmp___0 ; [L607] int tmp___1 ; [L608] int tmp___2 ; [L609] int tmp___3 ; [L613] CALL, EXPR is_master_triggered() [L235] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L238] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L239] COND FALSE !(M_E == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L248] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L250] return (__retres1); [L613] RET, EXPR is_master_triggered() [L613] tmp = is_master_triggered() [L615] COND FALSE !(\read(tmp)) [L621] CALL, EXPR is_transmit1_triggered() [L254] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L257] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L258] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L267] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L269] return (__retres1); [L621] RET, EXPR is_transmit1_triggered() [L621] tmp___0 = is_transmit1_triggered() [L623] COND FALSE !(\read(tmp___0)) [L629] CALL, EXPR is_transmit2_triggered() [L273] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L276] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L277] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L286] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L288] return (__retres1); [L629] RET, EXPR is_transmit2_triggered() [L629] tmp___1 = is_transmit2_triggered() [L631] COND FALSE !(\read(tmp___1)) [L637] CALL, EXPR is_transmit3_triggered() [L292] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L295] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L296] COND TRUE E_3 == 1 [L297] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=1, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L307] return (__retres1); [L637] RET, EXPR is_transmit3_triggered() [L637] tmp___2 = is_transmit3_triggered() [L639] COND TRUE \read(tmp___2) [L640] t3_st = 0 [L645] CALL, EXPR is_transmit4_triggered() [L311] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L314] COND TRUE t4_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L315] COND FALSE !(E_4 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L324] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L326] return (__retres1); [L645] RET, EXPR is_transmit4_triggered() [L645] tmp___3 = is_transmit4_triggered() [L647] COND FALSE !(\read(tmp___3)) [L661] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L155] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L156] E_3 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L146] COND TRUE 1 [L148] t2_pc = 1 [L149] t2_st = 2 [L455] RET transmit2() [L463] COND TRUE t3_st == 0 [L464] int tmp_ndt_4; [L465] tmp_ndt_4 = __VERIFIER_nondet_int() [L466] COND TRUE \read(tmp_ndt_4) [L468] t3_st = 1 [L469] CALL transmit3() [L170] COND FALSE !(t3_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L173] COND TRUE t3_pc == 1 [L189] E_4 = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L190] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L661] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L605] int tmp ; [L606] int tmp___0 ; [L607] int tmp___1 ; [L608] int tmp___2 ; [L609] int tmp___3 ; [L613] CALL, EXPR is_master_triggered() [L235] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L238] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L239] COND FALSE !(M_E == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L248] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L250] return (__retres1); [L613] RET, EXPR is_master_triggered() [L613] tmp = is_master_triggered() [L615] COND FALSE !(\read(tmp)) [L621] CALL, EXPR is_transmit1_triggered() [L254] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L257] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L258] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L267] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L269] return (__retres1); [L621] RET, EXPR is_transmit1_triggered() [L621] tmp___0 = is_transmit1_triggered() [L623] COND FALSE !(\read(tmp___0)) [L629] CALL, EXPR is_transmit2_triggered() [L273] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L276] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L277] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L286] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L288] return (__retres1); [L629] RET, EXPR is_transmit2_triggered() [L629] tmp___1 = is_transmit2_triggered() [L631] COND FALSE !(\read(tmp___1)) [L637] CALL, EXPR is_transmit3_triggered() [L292] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L295] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L296] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L305] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L307] return (__retres1); [L637] RET, EXPR is_transmit3_triggered() [L637] tmp___2 = is_transmit3_triggered() [L639] COND FALSE !(\read(tmp___2)) [L645] CALL, EXPR is_transmit4_triggered() [L311] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L314] COND TRUE t4_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L315] COND TRUE E_4 == 1 [L316] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=1, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L326] return (__retres1); [L645] RET, EXPR is_transmit4_triggered() [L645] tmp___3 = is_transmit4_triggered() [L647] COND TRUE \read(tmp___3) [L648] t4_st = 0 [L661] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=0] [L190] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=0] [L191] E_4 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=0] [L181] COND TRUE 1 [L183] t3_pc = 1 [L184] t3_st = 2 [L469] RET transmit3() [L477] COND TRUE t4_st == 0 [L478] int tmp_ndt_5; [L479] tmp_ndt_5 = __VERIFIER_nondet_int() [L480] COND TRUE \read(tmp_ndt_5) [L482] t4_st = 1 [L483] CALL transmit4() [L205] COND FALSE !(t4_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=1] [L208] COND TRUE t4_pc == 1 [L224] CALL error() [L21] reach_error() VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 460.9s, OverallIterations: 35, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 119.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20459 SdHoareTripleChecker+Valid, 12.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20315 mSDsluCounter, 26591 SdHoareTripleChecker+Invalid, 10.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20443 mSDsCounter, 6524 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21859 IncrementalHoareTripleChecker+Invalid, 28383 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6524 mSolverCounterUnsat, 6148 mSDtfsCounter, 21859 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4583 GetRequests, 3442 SyntacticMatches, 76 SemanticMatches, 1065 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74090 ImplicationChecksByTransitivity, 95.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62499occurred in iteration=23, InterpolantAutomatonStates: 658, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 81.9s AutomataMinimizationTime, 34 MinimizatonAttempts, 133990 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 5893 NumberOfCodeBlocks, 5893 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 6367 ConstructedInterpolants, 0 QuantifiedInterpolants, 14528 SizeOfPredicates, 46 NumberOfNonLiveVariables, 10673 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 55 InterpolantComputations, 29 PerfectInterpolantSequences, 3174/3691 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! [2022-12-14 16:18:38,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f32de4-b890-4bdd-a0f8-3e640ec555a5/bin/utaipan-gh47qXpMRh/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