./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba --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 954b1f05390ccaafb1cee97c6b5216f4167723fe344c33082a0f73951b4d6f58 --- 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-b5237d8 [2022-11-22 00:28:16,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:28:16,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:28:16,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:28:16,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:28:16,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:28:16,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:28:16,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:28:16,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:28:16,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:28:16,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:28:16,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:28:16,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:28:16,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:28:16,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:28:16,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:28:16,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:28:16,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:28:16,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:28:16,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:28:16,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:28:16,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:28:16,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:28:16,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:28:16,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:28:16,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:28:16,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:28:16,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:28:16,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:28:16,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:28:16,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:28:16,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:28:16,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:28:16,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:28:16,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:28:16,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:28:16,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:28:16,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:28:16,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:28:16,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:28:16,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:28:16,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 00:28:16,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:28:16,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:28:16,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:28:16,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:28:16,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:28:16,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:28:16,788 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:28:16,788 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:28:16,788 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:28:16,789 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:28:16,789 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:28:16,789 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:28:16,789 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:28:16,790 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:28:16,790 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:28:16,790 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:28:16,791 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:28:16,791 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:28:16,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:28:16,792 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:28:16,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:28:16,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:28:16,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:28:16,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:28:16,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:28:16,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:28:16,794 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:28:16,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:28:16,795 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:28:16,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:28:16,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:28:16,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:28:16,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:28:16,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:28:16,796 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:28:16,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:28:16,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:28:16,797 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:28:16,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:28:16,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:28:16,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:28:16,799 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_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 954b1f05390ccaafb1cee97c6b5216f4167723fe344c33082a0f73951b4d6f58 [2022-11-22 00:28:17,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:28:17,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:28:17,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:28:17,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:28:17,079 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:28:17,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c [2022-11-22 00:28:20,179 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:28:20,924 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:28:20,924 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c [2022-11-22 00:28:20,975 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/data/72af76866/5c628e0ecd3242e292c134378e2c8299/FLAG33b104a96 [2022-11-22 00:28:20,994 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/data/72af76866/5c628e0ecd3242e292c134378e2c8299 [2022-11-22 00:28:20,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:28:21,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:28:21,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:28:21,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:28:21,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:28:21,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:28:20" (1/1) ... [2022-11-22 00:28:21,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bdd24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:21, skipping insertion in model container [2022-11-22 00:28:21,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:28:20" (1/1) ... [2022-11-22 00:28:21,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:28:21,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:28:23,647 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_0887d091-9645-4986-93c3-603b05bed8d2/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[378560,378573] [2022-11-22 00:28:23,686 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_0887d091-9645-4986-93c3-603b05bed8d2/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[383339,383352] [2022-11-22 00:28:23,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:28:23,912 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:28:25,132 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_0887d091-9645-4986-93c3-603b05bed8d2/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[378560,378573] [2022-11-22 00:28:25,141 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_0887d091-9645-4986-93c3-603b05bed8d2/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[383339,383352] [2022-11-22 00:28:25,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:28:25,206 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:28:25,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25 WrapperNode [2022-11-22 00:28:25,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:28:25,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:28:25,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:28:25,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:28:25,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:25,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:25,686 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12624 [2022-11-22 00:28:25,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:28:25,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:28:25,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:28:25,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:28:25,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:25,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:25,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:25,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:26,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:26,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:26,089 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:26,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:26,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:28:26,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:28:26,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:28:26,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:28:26,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (1/1) ... [2022-11-22 00:28:26,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:28:26,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:26,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:28:26,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:28:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:28:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-22 00:28:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-22 00:28:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-22 00:28:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-22 00:28:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-22 00:28:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-22 00:28:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-22 00:28:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-22 00:28:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-22 00:28:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-22 00:28:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-22 00:28:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-22 00:28:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:28:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-22 00:28:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-22 00:28:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:28:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:28:26,587 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:28:26,604 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:28:35,437 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:28:38,118 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:28:38,118 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-22 00:28:38,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:28:38 BoogieIcfgContainer [2022-11-22 00:28:38,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:28:38,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:28:38,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:28:38,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:28:38,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:28:20" (1/3) ... [2022-11-22 00:28:38,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79923bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:28:38, skipping insertion in model container [2022-11-22 00:28:38,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:25" (2/3) ... [2022-11-22 00:28:38,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79923bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:28:38, skipping insertion in model container [2022-11-22 00:28:38,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:28:38" (3/3) ... [2022-11-22 00:28:38,147 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.02.cil-2.c [2022-11-22 00:28:38,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:28:38,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 00:28:38,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:28:38,283 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;@1919b4dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:28:38,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 00:28:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 1727 states, 1699 states have (on average 1.9770453207769276) internal successors, (3359), 1704 states have internal predecessors, (3359), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-22 00:28:38,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-22 00:28:38,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:38,311 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] [2022-11-22 00:28:38,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:38,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:38,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2069298848, now seen corresponding path program 1 times [2022-11-22 00:28:38,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:38,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750785889] [2022-11-22 00:28:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:38,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:38,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:38,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750785889] [2022-11-22 00:28:38,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750785889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:38,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:38,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:28:38,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123571953] [2022-11-22 00:28:38,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:38,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:28:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:28:38,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:38,737 INFO L87 Difference]: Start difference. First operand has 1727 states, 1699 states have (on average 1.9770453207769276) internal successors, (3359), 1704 states have internal predecessors, (3359), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 00:28:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:39,703 INFO L93 Difference]: Finished difference Result 3514 states and 6887 transitions. [2022-11-22 00:28:39,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:28:39,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2022-11-22 00:28:39,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:39,731 INFO L225 Difference]: With dead ends: 3514 [2022-11-22 00:28:39,731 INFO L226 Difference]: Without dead ends: 1786 [2022-11-22 00:28:39,741 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 [2022-11-22 00:28:39,745 INFO L413 NwaCegarLoop]: 3218 mSDtfsCounter, 3457 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3457 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:39,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3457 Valid, 6376 Invalid, 584 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:28:39,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-11-22 00:28:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1785. [2022-11-22 00:28:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1741 states have (on average 1.9563469270534175) internal successors, (3406), 1745 states have internal predecessors, (3406), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-22 00:28:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 3464 transitions. [2022-11-22 00:28:39,895 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 3464 transitions. Word has length 38 [2022-11-22 00:28:39,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:39,896 INFO L495 AbstractCegarLoop]: Abstraction has 1785 states and 3464 transitions. [2022-11-22 00:28:39,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 00:28:39,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 3464 transitions. [2022-11-22 00:28:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 00:28:39,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:39,906 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 00:28:39,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:28:39,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:39,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:39,908 INFO L85 PathProgramCache]: Analyzing trace with hash -663308944, now seen corresponding path program 1 times [2022-11-22 00:28:39,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:39,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598248991] [2022-11-22 00:28:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:39,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:28:40,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:40,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598248991] [2022-11-22 00:28:40,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598248991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:40,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41687950] [2022-11-22 00:28:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:40,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:40,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:40,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:40,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:28:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:40,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:28:40,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 00:28:40,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:40,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41687950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:40,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:40,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 00:28:40,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964563364] [2022-11-22 00:28:40,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:40,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:40,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:28:40,360 INFO L87 Difference]: Start difference. First operand 1785 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:28:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:40,825 INFO L93 Difference]: Finished difference Result 2056 states and 3839 transitions. [2022-11-22 00:28:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:40,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-11-22 00:28:40,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:40,836 INFO L225 Difference]: With dead ends: 2056 [2022-11-22 00:28:40,837 INFO L226 Difference]: Without dead ends: 1917 [2022-11-22 00:28:40,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:28:40,840 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 3356 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:40,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3356 Valid, 3269 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:28:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2022-11-22 00:28:40,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1911. [2022-11-22 00:28:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1833 states have (on average 1.9252591380250954) internal successors, (3529), 1838 states have internal predecessors, (3529), 52 states have call successors, (52), 25 states have call predecessors, (52), 24 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-22 00:28:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 3631 transitions. [2022-11-22 00:28:40,899 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 3631 transitions. Word has length 67 [2022-11-22 00:28:40,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:40,899 INFO L495 AbstractCegarLoop]: Abstraction has 1911 states and 3631 transitions. [2022-11-22 00:28:40,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:28:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 3631 transitions. [2022-11-22 00:28:40,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 00:28:40,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:40,902 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 00:28:40,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:41,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:41,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:41,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1613665072, now seen corresponding path program 1 times [2022-11-22 00:28:41,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:41,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696336341] [2022-11-22 00:28:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:41,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 00:28:41,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:41,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696336341] [2022-11-22 00:28:41,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696336341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:41,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:41,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:28:41,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221088331] [2022-11-22 00:28:41,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:41,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:28:41,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:28:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:28:41,524 INFO L87 Difference]: Start difference. First operand 1911 states and 3631 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 00:28:42,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:42,402 INFO L93 Difference]: Finished difference Result 2467 states and 4380 transitions. [2022-11-22 00:28:42,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:28:42,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 67 [2022-11-22 00:28:42,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:42,414 INFO L225 Difference]: With dead ends: 2467 [2022-11-22 00:28:42,414 INFO L226 Difference]: Without dead ends: 2203 [2022-11-22 00:28:42,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:28:42,417 INFO L413 NwaCegarLoop]: 3162 mSDtfsCounter, 3535 mSDsluCounter, 6254 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3546 SdHoareTripleChecker+Valid, 9416 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:42,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3546 Valid, 9416 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:28:42,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2022-11-22 00:28:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2147. [2022-11-22 00:28:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2003 states have (on average 1.872690963554668) internal successors, (3751), 2010 states have internal predecessors, (3751), 94 states have call successors, (94), 49 states have call predecessors, (94), 48 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-22 00:28:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3937 transitions. [2022-11-22 00:28:42,497 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3937 transitions. Word has length 67 [2022-11-22 00:28:42,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:42,498 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3937 transitions. [2022-11-22 00:28:42,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 00:28:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3937 transitions. [2022-11-22 00:28:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-22 00:28:42,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:42,501 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 00:28:42,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:28:42,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:42,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1513893631, now seen corresponding path program 1 times [2022-11-22 00:28:42,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:42,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574220988] [2022-11-22 00:28:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:42,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 00:28:42,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:42,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574220988] [2022-11-22 00:28:42,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574220988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:42,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:42,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:28:42,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247214877] [2022-11-22 00:28:42,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:42,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:42,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:42,566 INFO L87 Difference]: Start difference. First operand 2147 states and 3937 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 00:28:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:43,101 INFO L93 Difference]: Finished difference Result 2536 states and 4460 transitions. [2022-11-22 00:28:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:43,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-22 00:28:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:43,113 INFO L225 Difference]: With dead ends: 2536 [2022-11-22 00:28:43,113 INFO L226 Difference]: Without dead ends: 2268 [2022-11-22 00:28:43,214 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 [2022-11-22 00:28:43,215 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 36 mSDsluCounter, 3149 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:43,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 6336 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:28:43,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2022-11-22 00:28:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2205. [2022-11-22 00:28:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 2053 states have (on average 1.864101315148563) internal successors, (3827), 2060 states have internal predecessors, (3827), 98 states have call successors, (98), 53 states have call predecessors, (98), 52 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-22 00:28:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 4021 transitions. [2022-11-22 00:28:43,295 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 4021 transitions. Word has length 68 [2022-11-22 00:28:43,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:43,299 INFO L495 AbstractCegarLoop]: Abstraction has 2205 states and 4021 transitions. [2022-11-22 00:28:43,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 00:28:43,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 4021 transitions. [2022-11-22 00:28:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-22 00:28:43,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:43,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:43,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:28:43,309 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:43,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash 934667471, now seen corresponding path program 1 times [2022-11-22 00:28:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:43,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507266160] [2022-11-22 00:28:43,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:43,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-22 00:28:43,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:43,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507266160] [2022-11-22 00:28:43,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507266160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:43,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:43,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:28:43,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558416507] [2022-11-22 00:28:43,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:43,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:43,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:43,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:43,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:43,410 INFO L87 Difference]: Start difference. First operand 2205 states and 4021 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-22 00:28:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:43,894 INFO L93 Difference]: Finished difference Result 3043 states and 5150 transitions. [2022-11-22 00:28:43,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:43,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2022-11-22 00:28:43,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:43,907 INFO L225 Difference]: With dead ends: 3043 [2022-11-22 00:28:43,907 INFO L226 Difference]: Without dead ends: 2484 [2022-11-22 00:28:43,910 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 [2022-11-22 00:28:43,911 INFO L413 NwaCegarLoop]: 3188 mSDtfsCounter, 3349 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:43,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3349 Valid, 3270 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:28:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2022-11-22 00:28:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2022-11-22 00:28:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2252 states have (on average 1.813943161634103) internal successors, (4085), 2261 states have internal predecessors, (4085), 142 states have call successors, (142), 79 states have call predecessors, (142), 78 states have return successors, (140), 134 states have call predecessors, (140), 140 states have call successors, (140) [2022-11-22 00:28:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4367 transitions. [2022-11-22 00:28:44,055 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4367 transitions. Word has length 87 [2022-11-22 00:28:44,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:44,059 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 4367 transitions. [2022-11-22 00:28:44,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-22 00:28:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4367 transitions. [2022-11-22 00:28:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 00:28:44,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:44,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:44,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:28:44,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:44,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1788899467, now seen corresponding path program 1 times [2022-11-22 00:28:44,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:44,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076529460] [2022-11-22 00:28:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:44,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 00:28:44,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:44,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076529460] [2022-11-22 00:28:44,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076529460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:44,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718838435] [2022-11-22 00:28:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:44,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:44,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:44,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:44,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:28:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:44,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:28:44,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:28:44,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:44,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718838435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:44,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:44,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-22 00:28:44,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787748060] [2022-11-22 00:28:44,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:44,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:44,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:44,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:28:44,415 INFO L87 Difference]: Start difference. First operand 2474 states and 4367 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 00:28:44,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:44,977 INFO L93 Difference]: Finished difference Result 3213 states and 5363 transitions. [2022-11-22 00:28:44,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:44,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-11-22 00:28:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:44,992 INFO L225 Difference]: With dead ends: 3213 [2022-11-22 00:28:44,993 INFO L226 Difference]: Without dead ends: 2655 [2022-11-22 00:28:44,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:28:45,002 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 52 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6338 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:45,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 6338 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:28:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2022-11-22 00:28:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2553. [2022-11-22 00:28:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2319 states have (on average 1.8055196205260888) internal successors, (4187), 2328 states have internal predecessors, (4187), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-22 00:28:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4481 transitions. [2022-11-22 00:28:45,121 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4481 transitions. Word has length 99 [2022-11-22 00:28:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:45,122 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 4481 transitions. [2022-11-22 00:28:45,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 00:28:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4481 transitions. [2022-11-22 00:28:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 00:28:45,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:45,132 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:45,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:45,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 00:28:45,339 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:45,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:45,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1679988491, now seen corresponding path program 2 times [2022-11-22 00:28:45,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:45,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796174102] [2022-11-22 00:28:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:45,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-22 00:28:45,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:45,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796174102] [2022-11-22 00:28:45,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796174102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294796717] [2022-11-22 00:28:45,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:28:45,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:45,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:45,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:45,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:28:45,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 00:28:45,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:28:45,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:28:45,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 00:28:45,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:45,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294796717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:45,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:45,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-22 00:28:45,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019659769] [2022-11-22 00:28:45,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:45,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:45,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:45,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:45,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:28:45,768 INFO L87 Difference]: Start difference. First operand 2553 states and 4481 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:28:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:46,310 INFO L93 Difference]: Finished difference Result 3198 states and 5385 transitions. [2022-11-22 00:28:46,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:46,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-22 00:28:46,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:46,323 INFO L225 Difference]: With dead ends: 3198 [2022-11-22 00:28:46,324 INFO L226 Difference]: Without dead ends: 2561 [2022-11-22 00:28:46,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:28:46,328 INFO L413 NwaCegarLoop]: 3194 mSDtfsCounter, 92 mSDsluCounter, 3139 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:46,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6333 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:28:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2022-11-22 00:28:46,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2549. [2022-11-22 00:28:46,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2315 states have (on average 1.7982721382289417) internal successors, (4163), 2324 states have internal predecessors, (4163), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-22 00:28:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 4457 transitions. [2022-11-22 00:28:46,432 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 4457 transitions. Word has length 99 [2022-11-22 00:28:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:46,433 INFO L495 AbstractCegarLoop]: Abstraction has 2549 states and 4457 transitions. [2022-11-22 00:28:46,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:28:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 4457 transitions. [2022-11-22 00:28:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 00:28:46,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:46,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:46,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:46,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:46,652 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1685620309, now seen corresponding path program 1 times [2022-11-22 00:28:46,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:46,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991852084] [2022-11-22 00:28:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-22 00:28:46,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:46,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991852084] [2022-11-22 00:28:46,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991852084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:46,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506701702] [2022-11-22 00:28:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:46,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:46,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:46,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:47,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:28:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:47,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:28:47,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-22 00:28:47,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:47,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506701702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:47,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:47,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-22 00:28:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920290099] [2022-11-22 00:28:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:47,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:28:47,158 INFO L87 Difference]: Start difference. First operand 2549 states and 4457 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:28:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:47,603 INFO L93 Difference]: Finished difference Result 3331 states and 5474 transitions. [2022-11-22 00:28:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:47,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-22 00:28:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:47,616 INFO L225 Difference]: With dead ends: 3331 [2022-11-22 00:28:47,616 INFO L226 Difference]: Without dead ends: 2725 [2022-11-22 00:28:47,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:28:47,620 INFO L413 NwaCegarLoop]: 3156 mSDtfsCounter, 3359 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:47,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 3175 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:28:47,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2022-11-22 00:28:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2725. [2022-11-22 00:28:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2463 states have (on average 1.7576126674786845) internal successors, (4329), 2472 states have internal predecessors, (4329), 156 states have call successors, (156), 105 states have call predecessors, (156), 104 states have return successors, (154), 148 states have call predecessors, (154), 154 states have call successors, (154) [2022-11-22 00:28:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 4639 transitions. [2022-11-22 00:28:47,737 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 4639 transitions. Word has length 99 [2022-11-22 00:28:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:47,738 INFO L495 AbstractCegarLoop]: Abstraction has 2725 states and 4639 transitions. [2022-11-22 00:28:47,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:28:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 4639 transitions. [2022-11-22 00:28:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:28:47,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:47,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:47,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:47,947 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:47,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1848697004, now seen corresponding path program 1 times [2022-11-22 00:28:47,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:47,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597543225] [2022-11-22 00:28:47,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:47,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-22 00:28:48,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:48,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597543225] [2022-11-22 00:28:48,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597543225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:48,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830435214] [2022-11-22 00:28:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:48,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:48,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:48,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:48,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:28:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:48,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:28:48,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:28:48,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:48,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830435214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:48,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:48,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-22 00:28:48,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171752913] [2022-11-22 00:28:48,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:48,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:48,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:48,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:28:48,345 INFO L87 Difference]: Start difference. First operand 2725 states and 4639 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:28:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:48,907 INFO L93 Difference]: Finished difference Result 4207 states and 6540 transitions. [2022-11-22 00:28:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:48,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-11-22 00:28:48,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:48,933 INFO L225 Difference]: With dead ends: 4207 [2022-11-22 00:28:48,933 INFO L226 Difference]: Without dead ends: 3129 [2022-11-22 00:28:48,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:28:48,939 INFO L413 NwaCegarLoop]: 3167 mSDtfsCounter, 48 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 6301 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:48,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 6301 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:28:48,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-11-22 00:28:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2841. [2022-11-22 00:28:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2559 states have (on average 1.7456037514654161) internal successors, (4467), 2569 states have internal predecessors, (4467), 166 states have call successors, (166), 115 states have call predecessors, (166), 114 states have return successors, (164), 157 states have call predecessors, (164), 164 states have call successors, (164) [2022-11-22 00:28:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4797 transitions. [2022-11-22 00:28:49,088 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4797 transitions. Word has length 100 [2022-11-22 00:28:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:49,089 INFO L495 AbstractCegarLoop]: Abstraction has 2841 states and 4797 transitions. [2022-11-22 00:28:49,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:28:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4797 transitions. [2022-11-22 00:28:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-22 00:28:49,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:49,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:49,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:49,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-22 00:28:49,301 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1329117843, now seen corresponding path program 1 times [2022-11-22 00:28:49,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276235198] [2022-11-22 00:28:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:49,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-22 00:28:49,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:49,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276235198] [2022-11-22 00:28:49,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276235198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:49,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048420214] [2022-11-22 00:28:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:49,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:49,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:49,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:49,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:28:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:49,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:28:49,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:28:49,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:49,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048420214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:49,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:49,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-22 00:28:49,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053187692] [2022-11-22 00:28:49,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:49,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:49,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:49,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:28:49,565 INFO L87 Difference]: Start difference. First operand 2841 states and 4797 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 00:28:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:50,261 INFO L93 Difference]: Finished difference Result 3881 states and 6149 transitions. [2022-11-22 00:28:50,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:50,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2022-11-22 00:28:50,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:50,275 INFO L225 Difference]: With dead ends: 3881 [2022-11-22 00:28:50,275 INFO L226 Difference]: Without dead ends: 3260 [2022-11-22 00:28:50,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:28:50,278 INFO L413 NwaCegarLoop]: 3206 mSDtfsCounter, 56 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6356 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:50,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6356 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:28:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-11-22 00:28:50,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3009. [2022-11-22 00:28:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 2695 states have (on average 1.72430426716141) internal successors, (4647), 2705 states have internal predecessors, (4647), 182 states have call successors, (182), 131 states have call predecessors, (182), 130 states have return successors, (180), 173 states have call predecessors, (180), 180 states have call successors, (180) [2022-11-22 00:28:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 5009 transitions. [2022-11-22 00:28:50,480 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 5009 transitions. Word has length 101 [2022-11-22 00:28:50,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:50,480 INFO L495 AbstractCegarLoop]: Abstraction has 3009 states and 5009 transitions. [2022-11-22 00:28:50,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 00:28:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 5009 transitions. [2022-11-22 00:28:50,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-22 00:28:50,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:50,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:50,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:50,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 00:28:50,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:50,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:50,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1548947729, now seen corresponding path program 1 times [2022-11-22 00:28:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:50,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822139328] [2022-11-22 00:28:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:50,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 00:28:50,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:50,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822139328] [2022-11-22 00:28:50,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822139328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:50,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122783065] [2022-11-22 00:28:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:50,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:50,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:50,894 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:50,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:28:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:51,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 00:28:51,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 00:28:51,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:51,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122783065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:51,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:51,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2022-11-22 00:28:51,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739044221] [2022-11-22 00:28:51,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:51,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:28:51,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:51,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:28:51,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:28:51,156 INFO L87 Difference]: Start difference. First operand 3009 states and 5009 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-22 00:28:52,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:52,250 INFO L93 Difference]: Finished difference Result 4904 states and 7404 transitions. [2022-11-22 00:28:52,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:28:52,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 101 [2022-11-22 00:28:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:52,273 INFO L225 Difference]: With dead ends: 4904 [2022-11-22 00:28:52,273 INFO L226 Difference]: Without dead ends: 3542 [2022-11-22 00:28:52,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-22 00:28:52,279 INFO L413 NwaCegarLoop]: 3163 mSDtfsCounter, 3501 mSDsluCounter, 6266 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 9429 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:52,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3512 Valid, 9429 Invalid, 869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:28:52,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2022-11-22 00:28:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3538. [2022-11-22 00:28:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3096 states have (on average 1.6563307493540051) internal successors, (5128), 3109 states have internal predecessors, (5128), 256 states have call successors, (256), 185 states have call predecessors, (256), 184 states have return successors, (254), 244 states have call predecessors, (254), 254 states have call successors, (254) [2022-11-22 00:28:52,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5638 transitions. [2022-11-22 00:28:52,585 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5638 transitions. Word has length 101 [2022-11-22 00:28:52,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:52,586 INFO L495 AbstractCegarLoop]: Abstraction has 3538 states and 5638 transitions. [2022-11-22 00:28:52,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-22 00:28:52,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5638 transitions. [2022-11-22 00:28:52,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 00:28:52,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:52,593 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:52,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:52,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:52,803 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:52,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:52,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1348845533, now seen corresponding path program 1 times [2022-11-22 00:28:52,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:52,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181513230] [2022-11-22 00:28:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:52,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-22 00:28:53,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:53,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181513230] [2022-11-22 00:28:53,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181513230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:53,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470093021] [2022-11-22 00:28:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:53,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:53,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:53,443 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:53,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 00:28:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:53,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 00:28:53,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 00:28:53,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:53,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470093021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:53,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:53,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-22 00:28:53,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487587551] [2022-11-22 00:28:53,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:53,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:28:53,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:28:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-22 00:28:53,825 INFO L87 Difference]: Start difference. First operand 3538 states and 5638 transitions. Second operand has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 00:28:55,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:55,150 INFO L93 Difference]: Finished difference Result 4977 states and 7487 transitions. [2022-11-22 00:28:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:28:55,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-11-22 00:28:55,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:55,161 INFO L225 Difference]: With dead ends: 4977 [2022-11-22 00:28:55,161 INFO L226 Difference]: Without dead ends: 3659 [2022-11-22 00:28:55,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:28:55,166 INFO L413 NwaCegarLoop]: 3116 mSDtfsCounter, 3387 mSDsluCounter, 9286 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3395 SdHoareTripleChecker+Valid, 12402 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:55,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3395 Valid, 12402 Invalid, 1126 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [50 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:28:55,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2022-11-22 00:28:55,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3623. [2022-11-22 00:28:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 3171 states have (on average 1.6367076631977293) internal successors, (5190), 3184 states have internal predecessors, (5190), 258 states have call successors, (258), 193 states have call predecessors, (258), 192 states have return successors, (256), 246 states have call predecessors, (256), 256 states have call successors, (256) [2022-11-22 00:28:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5704 transitions. [2022-11-22 00:28:55,396 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5704 transitions. Word has length 102 [2022-11-22 00:28:55,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:55,396 INFO L495 AbstractCegarLoop]: Abstraction has 3623 states and 5704 transitions. [2022-11-22 00:28:55,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 00:28:55,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5704 transitions. [2022-11-22 00:28:55,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 00:28:55,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:55,401 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:55,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:55,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:55,608 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:55,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash -899746115, now seen corresponding path program 1 times [2022-11-22 00:28:55,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:55,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667283096] [2022-11-22 00:28:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-22 00:28:55,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:55,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667283096] [2022-11-22 00:28:55,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667283096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:55,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123966588] [2022-11-22 00:28:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:55,688 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:55,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 00:28:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:55,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:28:55,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 00:28:55,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:55,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123966588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:55,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:55,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-22 00:28:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430877740] [2022-11-22 00:28:55,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:55,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:55,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:55,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:55,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:55,857 INFO L87 Difference]: Start difference. First operand 3623 states and 5704 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 00:28:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:56,533 INFO L93 Difference]: Finished difference Result 5011 states and 7486 transitions. [2022-11-22 00:28:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:56,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2022-11-22 00:28:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:56,544 INFO L225 Difference]: With dead ends: 5011 [2022-11-22 00:28:56,544 INFO L226 Difference]: Without dead ends: 3633 [2022-11-22 00:28:56,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:56,549 INFO L413 NwaCegarLoop]: 3223 mSDtfsCounter, 79 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 6361 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:56,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 6361 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:28:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-11-22 00:28:56,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3603. [2022-11-22 00:28:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 3151 states have (on average 1.6217073944779434) internal successors, (5110), 3164 states have internal predecessors, (5110), 258 states have call successors, (258), 193 states have call predecessors, (258), 192 states have return successors, (256), 246 states have call predecessors, (256), 256 states have call successors, (256) [2022-11-22 00:28:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 5624 transitions. [2022-11-22 00:28:56,767 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 5624 transitions. Word has length 102 [2022-11-22 00:28:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:56,768 INFO L495 AbstractCegarLoop]: Abstraction has 3603 states and 5624 transitions. [2022-11-22 00:28:56,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 00:28:56,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 5624 transitions. [2022-11-22 00:28:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-22 00:28:56,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:56,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:56,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:56,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-22 00:28:56,979 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:56,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:56,979 INFO L85 PathProgramCache]: Analyzing trace with hash -14759137, now seen corresponding path program 1 times [2022-11-22 00:28:56,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:56,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524663247] [2022-11-22 00:28:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:56,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-22 00:28:57,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:57,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524663247] [2022-11-22 00:28:57,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524663247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:57,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519477627] [2022-11-22 00:28:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:57,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:57,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:57,120 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:57,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 00:28:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:57,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 00:28:57,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 00:28:57,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:57,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519477627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:57,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:57,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-11-22 00:28:57,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857190511] [2022-11-22 00:28:57,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:57,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:28:57,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:57,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:28:57,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:28:57,379 INFO L87 Difference]: Start difference. First operand 3603 states and 5624 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-22 00:28:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:58,198 INFO L93 Difference]: Finished difference Result 5257 states and 7636 transitions. [2022-11-22 00:28:58,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:28:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 103 [2022-11-22 00:28:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:58,209 INFO L225 Difference]: With dead ends: 5257 [2022-11-22 00:28:58,210 INFO L226 Difference]: Without dead ends: 4239 [2022-11-22 00:28:58,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:28:58,213 INFO L413 NwaCegarLoop]: 3204 mSDtfsCounter, 3395 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3395 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:58,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3395 Valid, 3303 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:28:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2022-11-22 00:28:58,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3827. [2022-11-22 00:28:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 3356 states have (on average 1.58015494636472) internal successors, (5303), 3369 states have internal predecessors, (5303), 258 states have call successors, (258), 212 states have call predecessors, (258), 211 states have return successors, (268), 246 states have call predecessors, (268), 256 states have call successors, (268) [2022-11-22 00:28:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5829 transitions. [2022-11-22 00:28:58,472 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5829 transitions. Word has length 103 [2022-11-22 00:28:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:58,473 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5829 transitions. [2022-11-22 00:28:58,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-22 00:28:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5829 transitions. [2022-11-22 00:28:58,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-22 00:28:58,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:58,480 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:58,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:58,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-22 00:28:58,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:58,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash -484329719, now seen corresponding path program 1 times [2022-11-22 00:28:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:58,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803824339] [2022-11-22 00:28:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:58,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 00:28:58,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:58,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803824339] [2022-11-22 00:28:58,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803824339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:58,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:58,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:28:58,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14086502] [2022-11-22 00:28:58,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:58,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:28:58,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:28:58,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:28:58,918 INFO L87 Difference]: Start difference. First operand 3827 states and 5829 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:29:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:00,058 INFO L93 Difference]: Finished difference Result 5705 states and 8066 transitions. [2022-11-22 00:29:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:29:00,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-11-22 00:29:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:00,072 INFO L225 Difference]: With dead ends: 5705 [2022-11-22 00:29:00,072 INFO L226 Difference]: Without dead ends: 4576 [2022-11-22 00:29:00,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:29:00,077 INFO L413 NwaCegarLoop]: 3192 mSDtfsCounter, 76 mSDsluCounter, 9387 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 12579 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:00,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 12579 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:29:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2022-11-22 00:29:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4477. [2022-11-22 00:29:00,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 3833 states have (on average 1.5246543177667624) internal successors, (5844), 3846 states have internal predecessors, (5844), 358 states have call successors, (358), 291 states have call predecessors, (358), 284 states have return successors, (386), 340 states have call predecessors, (386), 356 states have call successors, (386) [2022-11-22 00:29:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 6588 transitions. [2022-11-22 00:29:00,396 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 6588 transitions. Word has length 104 [2022-11-22 00:29:00,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:00,396 INFO L495 AbstractCegarLoop]: Abstraction has 4477 states and 6588 transitions. [2022-11-22 00:29:00,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:29:00,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 6588 transitions. [2022-11-22 00:29:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-22 00:29:00,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:00,402 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:29:00,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:29:00,403 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:29:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1130106033, now seen corresponding path program 1 times [2022-11-22 00:29:00,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:00,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219273711] [2022-11-22 00:29:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:00,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 00:29:00,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:00,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219273711] [2022-11-22 00:29:00,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219273711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:29:00,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546915575] [2022-11-22 00:29:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:00,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:29:00,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:29:00,610 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:29:00,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 00:29:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:00,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-22 00:29:00,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:29:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:29:00,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:29:00,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546915575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:29:00,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:29:00,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-11-22 00:29:00,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790590606] [2022-11-22 00:29:00,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:29:00,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:29:00,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:00,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:29:00,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:29:00,921 INFO L87 Difference]: Start difference. First operand 4477 states and 6588 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-22 00:29:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:02,244 INFO L93 Difference]: Finished difference Result 6777 states and 9277 transitions. [2022-11-22 00:29:02,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:29:02,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 104 [2022-11-22 00:29:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:02,259 INFO L225 Difference]: With dead ends: 6777 [2022-11-22 00:29:02,259 INFO L226 Difference]: Without dead ends: 4825 [2022-11-22 00:29:02,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:29:02,266 INFO L413 NwaCegarLoop]: 3193 mSDtfsCounter, 183 mSDsluCounter, 12444 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 15637 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:02,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 15637 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 00:29:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2022-11-22 00:29:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4662. [2022-11-22 00:29:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4662 states, 3973 states have (on average 1.506670022652907) internal successors, (5986), 3990 states have internal predecessors, (5986), 380 states have call successors, (380), 310 states have call predecessors, (380), 307 states have return successors, (418), 362 states have call predecessors, (418), 378 states have call successors, (418) [2022-11-22 00:29:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4662 states to 4662 states and 6784 transitions. [2022-11-22 00:29:02,633 INFO L78 Accepts]: Start accepts. Automaton has 4662 states and 6784 transitions. Word has length 104 [2022-11-22 00:29:02,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:02,633 INFO L495 AbstractCegarLoop]: Abstraction has 4662 states and 6784 transitions. [2022-11-22 00:29:02,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-22 00:29:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4662 states and 6784 transitions. [2022-11-22 00:29:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-22 00:29:02,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:02,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:29:02,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 00:29:02,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 00:29:02,844 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:29:02,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:02,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1845237448, now seen corresponding path program 1 times [2022-11-22 00:29:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:02,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702885884] [2022-11-22 00:29:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:02,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 00:29:03,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:03,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702885884] [2022-11-22 00:29:03,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702885884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:29:03,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972255441] [2022-11-22 00:29:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:03,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:29:03,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:29:03,381 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:29:03,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 00:29:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:03,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 00:29:03,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:29:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 00:29:03,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:29:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-22 00:29:03,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972255441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:29:03,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1750659074] [2022-11-22 00:29:04,009 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-22 00:29:04,009 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:29:04,013 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:29:04,019 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:29:04,020 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:29:11,106 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-22 00:29:16,159 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-22 00:29:16,807 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-22 00:29:16,874 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 67 for LOIs [2022-11-22 00:29:16,900 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-22 00:29:17,175 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-22 00:29:17,501 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:29:37,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1750659074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:29:37,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:29:37,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [13, 8, 6] total 64 [2022-11-22 00:29:37,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862624075] [2022-11-22 00:29:37,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:29:37,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-22 00:29:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:37,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-22 00:29:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=3582, Unknown=0, NotChecked=0, Total=4032 [2022-11-22 00:29:37,864 INFO L87 Difference]: Start difference. First operand 4662 states and 6784 transitions. Second operand has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-22 00:30:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:30:27,721 INFO L93 Difference]: Finished difference Result 7242 states and 9783 transitions. [2022-11-22 00:30:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-22 00:30:27,722 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) Word has length 110 [2022-11-22 00:30:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:30:27,735 INFO L225 Difference]: With dead ends: 7242 [2022-11-22 00:30:27,735 INFO L226 Difference]: Without dead ends: 4544 [2022-11-22 00:30:27,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3704 ImplicationChecksByTransitivity, 40.0s TimeCoverageRelationStatistics Valid=1204, Invalid=9926, Unknown=0, NotChecked=0, Total=11130 [2022-11-22 00:30:27,744 INFO L413 NwaCegarLoop]: 3152 mSDtfsCounter, 325 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 21447 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 21545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 21447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:30:27,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 3923 Invalid, 21545 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 21447 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2022-11-22 00:30:27,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2022-11-22 00:30:28,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4516. [2022-11-22 00:30:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3862 states have (on average 1.5145002589331953) internal successors, (5849), 3878 states have internal predecessors, (5849), 359 states have call successors, (359), 295 states have call predecessors, (359), 293 states have return successors, (395), 343 states have call predecessors, (395), 357 states have call successors, (395) [2022-11-22 00:30:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 6603 transitions. [2022-11-22 00:30:28,121 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 6603 transitions. Word has length 110 [2022-11-22 00:30:28,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:30:28,122 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 6603 transitions. [2022-11-22 00:30:28,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-22 00:30:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 6603 transitions. [2022-11-22 00:30:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-22 00:30:28,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:30:28,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:30:28,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 00:30:28,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 00:30:28,340 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:30:28,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:30:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash -806825934, now seen corresponding path program 1 times [2022-11-22 00:30:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:30:28,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693752389] [2022-11-22 00:30:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:30:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:30:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-22 00:30:28,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:30:28,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693752389] [2022-11-22 00:30:28,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693752389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:30:28,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97627895] [2022-11-22 00:30:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:30:28,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:30:28,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:30:28,600 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:30:28,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 00:30:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:28,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-22 00:30:28,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:30:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 00:30:28,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:30:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-22 00:30:29,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97627895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:30:29,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2013853088] [2022-11-22 00:30:29,171 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-22 00:30:29,172 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:30:29,172 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:30:29,172 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:30:29,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:30:34,867 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 72 for LOIs [2022-11-22 00:30:34,871 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-22 00:30:42,842 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-22 00:30:46,101 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-22 00:30:46,146 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 115 for LOIs [2022-11-22 00:30:46,166 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 121 for LOIs [2022-11-22 00:30:46,350 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-22 00:30:46,556 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:31:03,178 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 389 DAG size of output: 258 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:31:17,353 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '158636#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-22 00:31:17,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:31:17,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:31:17,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2022-11-22 00:31:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051477621] [2022-11-22 00:31:17,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:31:17,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:31:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:17,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:31:17,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3799, Unknown=0, NotChecked=0, Total=4290 [2022-11-22 00:31:17,357 INFO L87 Difference]: Start difference. First operand 4516 states and 6603 transitions. Second operand has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-22 00:31:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:21,340 INFO L93 Difference]: Finished difference Result 7170 states and 9780 transitions. [2022-11-22 00:31:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-22 00:31:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 113 [2022-11-22 00:31:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:21,353 INFO L225 Difference]: With dead ends: 7170 [2022-11-22 00:31:21,353 INFO L226 Difference]: Without dead ends: 4298 [2022-11-22 00:31:21,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 315 SyntacticMatches, 6 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9673 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=1755, Invalid=20895, Unknown=0, NotChecked=0, Total=22650 [2022-11-22 00:31:21,366 INFO L413 NwaCegarLoop]: 3309 mSDtfsCounter, 10442 mSDsluCounter, 20350 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10447 SdHoareTripleChecker+Valid, 23659 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:21,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10447 Valid, 23659 Invalid, 3070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [238 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 00:31:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2022-11-22 00:31:21,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 3758. [2022-11-22 00:31:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3281 states have (on average 1.56903383114904) internal successors, (5148), 3301 states have internal predecessors, (5148), 251 states have call successors, (251), 220 states have call predecessors, (251), 224 states have return successors, (277), 237 states have call predecessors, (277), 249 states have call successors, (277) [2022-11-22 00:31:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5676 transitions. [2022-11-22 00:31:21,762 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5676 transitions. Word has length 113 [2022-11-22 00:31:21,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:21,762 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 5676 transitions. [2022-11-22 00:31:21,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-22 00:31:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5676 transitions. [2022-11-22 00:31:21,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-22 00:31:21,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:21,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:21,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-22 00:31:21,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 00:31:21,973 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:31:21,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:21,973 INFO L85 PathProgramCache]: Analyzing trace with hash -724063171, now seen corresponding path program 1 times [2022-11-22 00:31:21,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:21,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831807668] [2022-11-22 00:31:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:21,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 00:31:22,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:22,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831807668] [2022-11-22 00:31:22,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831807668] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:31:22,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624276461] [2022-11-22 00:31:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:22,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:31:22,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:31:22,463 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:31:22,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-22 00:31:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:22,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 00:31:22,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:31:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 00:31:22,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:31:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-22 00:31:23,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624276461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:31:23,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [252934003] [2022-11-22 00:31:23,034 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-22 00:31:23,034 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:31:23,035 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:31:23,035 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:31:23,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:31:27,671 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-22 00:31:31,636 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-22 00:31:35,591 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-22 00:31:35,637 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 68 for LOIs [2022-11-22 00:31:35,645 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-22 00:31:35,760 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-22 00:31:35,953 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:31:45,138 WARN L233 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 342 DAG size of output: 270 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:32:02,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [252934003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:02,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:32:02,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [13, 8, 6] total 65 [2022-11-22 00:32:02,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658926356] [2022-11-22 00:32:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-22 00:32:02,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-22 00:32:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=3702, Unknown=0, NotChecked=0, Total=4160 [2022-11-22 00:32:02,676 INFO L87 Difference]: Start difference. First operand 3758 states and 5676 transitions. Second operand has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-22 00:32:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:34,899 INFO L93 Difference]: Finished difference Result 5482 states and 7655 transitions. [2022-11-22 00:32:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-22 00:32:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) Word has length 113 [2022-11-22 00:32:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:34,909 INFO L225 Difference]: With dead ends: 5482 [2022-11-22 00:32:34,909 INFO L226 Difference]: Without dead ends: 3579 [2022-11-22 00:32:34,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3855 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=1203, Invalid=10139, Unknown=0, NotChecked=0, Total=11342 [2022-11-22 00:32:34,917 INFO L413 NwaCegarLoop]: 3152 mSDtfsCounter, 375 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 8946 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 9065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 8946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:34,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 3829 Invalid, 9065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 8946 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-11-22 00:32:34,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2022-11-22 00:32:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3527. [2022-11-22 00:32:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3109 states have (on average 1.594724991958829) internal successors, (4958), 3127 states have internal predecessors, (4958), 218 states have call successors, (218), 193 states have call predecessors, (218), 198 states have return successors, (242), 207 states have call predecessors, (242), 216 states have call successors, (242) [2022-11-22 00:32:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 5418 transitions. [2022-11-22 00:32:35,213 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 5418 transitions. Word has length 113 [2022-11-22 00:32:35,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:35,213 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 5418 transitions. [2022-11-22 00:32:35,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-22 00:32:35,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 5418 transitions. [2022-11-22 00:32:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-22 00:32:35,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:35,217 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 00:32:35,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:35,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:35,423 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:35,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:35,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1607272299, now seen corresponding path program 1 times [2022-11-22 00:32:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:35,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022682774] [2022-11-22 00:32:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:35,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:36,041 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 00:32:36,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:36,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022682774] [2022-11-22 00:32:36,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022682774] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:32:36,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805176449] [2022-11-22 00:32:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:36,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:36,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:36,047 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:36,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-22 00:32:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:36,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-22 00:32:36,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 00:32:36,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 00:32:37,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805176449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:37,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [889625780] [2022-11-22 00:32:37,599 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-22 00:32:37,599 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:32:37,600 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:32:37,600 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:32:37,600 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:32:43,043 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 63 for LOIs [2022-11-22 00:32:43,046 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 170 for LOIs [2022-11-22 00:32:47,143 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-22 00:32:49,170 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-22 00:32:49,213 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 56 for LOIs [2022-11-22 00:32:49,221 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-22 00:32:49,296 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 56 for LOIs [2022-11-22 00:32:49,605 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:33:21,267 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '185712#(and (= ~a15~0 1) (= 5 ~a20~0) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (= ~a27~0 1) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-22 00:33:21,268 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:33:21,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:33:21,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 14] total 37 [2022-11-22 00:33:21,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020138515] [2022-11-22 00:33:21,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:33:21,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-22 00:33:21,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-22 00:33:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=696, Invalid=7676, Unknown=0, NotChecked=0, Total=8372 [2022-11-22 00:33:21,272 INFO L87 Difference]: Start difference. First operand 3527 states and 5418 transitions. Second operand has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) [2022-11-22 00:33:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:31,533 INFO L93 Difference]: Finished difference Result 7917 states and 10527 transitions. [2022-11-22 00:33:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-22 00:33:31,534 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) Word has length 116 [2022-11-22 00:33:31,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:31,553 INFO L225 Difference]: With dead ends: 7917 [2022-11-22 00:33:31,553 INFO L226 Difference]: Without dead ends: 6794 [2022-11-22 00:33:31,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 284 SyntacticMatches, 17 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14629 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=3805, Invalid=30977, Unknown=0, NotChecked=0, Total=34782 [2022-11-22 00:33:31,562 INFO L413 NwaCegarLoop]: 3135 mSDtfsCounter, 21989 mSDsluCounter, 34930 mSDsCounter, 0 mSdLazyCounter, 7233 mSolverCounterSat, 1657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21995 SdHoareTripleChecker+Valid, 38065 SdHoareTripleChecker+Invalid, 8890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1657 IncrementalHoareTripleChecker+Valid, 7233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:31,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21995 Valid, 38065 Invalid, 8890 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1657 Valid, 7233 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-22 00:33:31,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2022-11-22 00:33:32,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 3841. [2022-11-22 00:33:32,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3841 states, 3338 states have (on average 1.5566207309766327) internal successors, (5196), 3366 states have internal predecessors, (5196), 263 states have call successors, (263), 229 states have call predecessors, (263), 238 states have return successors, (281), 246 states have call predecessors, (281), 261 states have call successors, (281) [2022-11-22 00:33:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 5740 transitions. [2022-11-22 00:33:32,038 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 5740 transitions. Word has length 116 [2022-11-22 00:33:32,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:32,038 INFO L495 AbstractCegarLoop]: Abstraction has 3841 states and 5740 transitions. [2022-11-22 00:33:32,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) [2022-11-22 00:33:32,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 5740 transitions. [2022-11-22 00:33:32,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-22 00:33:32,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:32,042 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:32,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-22 00:33:32,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-22 00:33:32,249 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash 907514321, now seen corresponding path program 1 times [2022-11-22 00:33:32,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:32,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429340237] [2022-11-22 00:33:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:32,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-22 00:33:32,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:32,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429340237] [2022-11-22 00:33:32,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429340237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:32,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:32,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:33:32,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746430753] [2022-11-22 00:33:32,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:32,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:33:32,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:33:32,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:33:32,420 INFO L87 Difference]: Start difference. First operand 3841 states and 5740 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-22 00:33:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:33,855 INFO L93 Difference]: Finished difference Result 7345 states and 9735 transitions. [2022-11-22 00:33:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:33:33,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 128 [2022-11-22 00:33:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:33,872 INFO L225 Difference]: With dead ends: 7345 [2022-11-22 00:33:33,872 INFO L226 Difference]: Without dead ends: 6105 [2022-11-22 00:33:33,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:33:33,878 INFO L413 NwaCegarLoop]: 3285 mSDtfsCounter, 3501 mSDsluCounter, 6442 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 9727 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:33,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3501 Valid, 9727 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:33:33,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2022-11-22 00:33:34,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 4798. [2022-11-22 00:33:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4067 states have (on average 1.484140644209491) internal successors, (6036), 4104 states have internal predecessors, (6036), 384 states have call successors, (384), 330 states have call predecessors, (384), 345 states have return successors, (408), 364 states have call predecessors, (408), 382 states have call successors, (408) [2022-11-22 00:33:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6828 transitions. [2022-11-22 00:33:34,523 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6828 transitions. Word has length 128 [2022-11-22 00:33:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:34,524 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6828 transitions. [2022-11-22 00:33:34,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-22 00:33:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6828 transitions. [2022-11-22 00:33:34,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 00:33:34,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:34,529 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:34,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 00:33:34,529 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash -713986447, now seen corresponding path program 1 times [2022-11-22 00:33:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:34,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175207539] [2022-11-22 00:33:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:34,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:33:34,554 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 00:33:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:33:34,648 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 00:33:34,648 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 00:33:34,650 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-22 00:33:34,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-22 00:33:34,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 00:33:34,657 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:34,663 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:33:34,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:33:34 BoogieIcfgContainer [2022-11-22 00:33:34,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:33:34,858 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:33:34,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:33:34,859 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:33:34,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:28:38" (3/4) ... [2022-11-22 00:33:34,861 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-22 00:33:35,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:33:35,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:33:35,012 INFO L158 Benchmark]: Toolchain (without parser) took 314008.08ms. Allocated memory was 148.9MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 74.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2022-11-22 00:33:35,012 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 118.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:33:35,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4206.25ms. Allocated memory was 148.9MB in the beginning and 220.2MB in the end (delta: 71.3MB). Free memory was 74.0MB in the beginning and 111.5MB in the end (delta: -37.5MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. [2022-11-22 00:33:35,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 478.37ms. Allocated memory was 220.2MB in the beginning and 325.1MB in the end (delta: 104.9MB). Free memory was 111.5MB in the beginning and 179.6MB in the end (delta: -68.2MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. [2022-11-22 00:33:35,015 INFO L158 Benchmark]: Boogie Preprocessor took 574.93ms. Allocated memory is still 325.1MB. Free memory was 179.6MB in the beginning and 164.0MB in the end (delta: 15.6MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2022-11-22 00:33:35,016 INFO L158 Benchmark]: RCFGBuilder took 11865.48ms. Allocated memory was 325.1MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 164.0MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 534.8MB. Max. memory is 16.1GB. [2022-11-22 00:33:35,016 INFO L158 Benchmark]: TraceAbstraction took 296724.36ms. Allocated memory was 1.5GB in the beginning and 3.2GB in the end (delta: 1.7GB). Free memory was 1.3GB in the beginning and 1.2GB in the end (delta: 82.6MB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-22 00:33:35,017 INFO L158 Benchmark]: Witness Printer took 148.70ms. Allocated memory is still 3.2GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-22 00:33:35,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 118.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4206.25ms. Allocated memory was 148.9MB in the beginning and 220.2MB in the end (delta: 71.3MB). Free memory was 74.0MB in the beginning and 111.5MB in the end (delta: -37.5MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 478.37ms. Allocated memory was 220.2MB in the beginning and 325.1MB in the end (delta: 104.9MB). Free memory was 111.5MB in the beginning and 179.6MB in the end (delta: -68.2MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 574.93ms. Allocated memory is still 325.1MB. Free memory was 179.6MB in the beginning and 164.0MB in the end (delta: 15.6MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * RCFGBuilder took 11865.48ms. Allocated memory was 325.1MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 164.0MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 534.8MB. Max. memory is 16.1GB. * TraceAbstraction took 296724.36ms. Allocated memory was 1.5GB in the beginning and 3.2GB in the end (delta: 1.7GB). Free memory was 1.3GB in the beginning and 1.2GB in the end (delta: 82.6MB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 148.70ms. Allocated memory is still 3.2GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. 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: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int t2_pc = 0; [L11180] int m_st ; [L11181] int t1_st ; [L11182] int t2_st ; [L11183] int m_i ; [L11184] int t1_i ; [L11185] int t2_i ; [L11186] int M_E = 2; [L11187] int T1_E = 2; [L11188] int T2_E = 2; [L11189] int E_M = 2; [L11190] int E_1 = 2; [L11191] int E_2 = 2; [L11196] int token ; [L11198] int local ; [L11776] COND FALSE !(__VERIFIER_nondet_int()) [L11779] CALL main2() [L11763] int __retres1 ; [L11767] CALL init_model() [L11677] m_i = 1 [L11678] t1_i = 1 [L11679] t2_i = 1 [L11767] RET init_model() [L11768] CALL start_simulation() [L11704] int kernel_st ; [L11705] int tmp ; [L11706] int tmp___0 ; [L11710] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=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, token=0] [L11711] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=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, token=0] [L11712] CALL init_threads() [L11396] COND TRUE m_i == 1 [L11397] m_st = 0 [L11401] COND TRUE t1_i == 1 [L11402] t1_st = 0 [L11406] COND TRUE t2_i == 1 [L11407] t2_st = 0 [L11712] RET init_threads() [L11713] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11509] COND FALSE !(M_E == 0) [L11514] COND FALSE !(T1_E == 0) [L11519] COND FALSE !(T2_E == 0) [L11524] COND FALSE !(E_M == 0) [L11529] COND FALSE !(E_1 == 0) [L11534] COND FALSE !(E_2 == 0) [L11713] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=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, token=0] [L11714] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11341] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11350] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11360] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11369] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11379] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11714] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=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, token=0] [L11715] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11547] COND FALSE !(M_E == 1) [L11552] COND FALSE !(T1_E == 1) [L11557] COND FALSE !(T2_E == 1) [L11562] COND FALSE !(E_M == 1) [L11567] COND FALSE !(E_1 == 1) [L11572] COND FALSE !(E_2 == 1) [L11715] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=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, token=0] [L11718] COND TRUE 1 [L11721] kernel_st = 1 [L11722] CALL eval() [L11442] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=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, token=0] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, tmp=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=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, tmp=1, tmp_ndt_1=0, token=0] [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE \read(tmp_ndt_2) [L11475] t1_st = 1 [L11476] CALL transmit1() [L11259] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET transmit1() [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE \read(tmp_ndt_3) [L11489] t2_st = 1 [L11490] CALL transmit2() [L11295] COND TRUE t2_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET transmit2() [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, 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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, 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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, 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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, 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, tmp_var=0, token=0] [L11214] COND TRUE 1 [L11217] token = __VERIFIER_nondet_int() [L11218] local = token [L11219] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, tmp_var=0, token=0] [L11220] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11620] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11341] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11351] COND TRUE E_1 == 1 [L11352] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND TRUE \read(tmp___0) [L11599] t1_st = 0 [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11370] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11379] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11220] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, 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, tmp_var=0, token=0] [L11221] E_1 = 2 [L11222] m_pc = 1 [L11223] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, 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, tmp_var=0, token=0] [L11462] RET master() [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE \read(tmp_ndt_2) [L11475] t1_st = 1 [L11476] CALL transmit1() [L11259] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, 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, token=0] [L11262] COND TRUE t1_pc == 1 [L11278] token += 1 [L11279] E_2 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11280] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11620] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11331] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11332] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11341] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11351] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11360] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11370] COND TRUE E_2 == 1 [L11371] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND TRUE \read(tmp___1) [L11607] t2_st = 0 [L11620] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11280] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, 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, token=1] [L11281] E_2 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, 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, token=1] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET transmit1() [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE \read(tmp_ndt_3) [L11489] t2_st = 1 [L11490] CALL transmit2() [L11295] COND FALSE !(t2_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, 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, token=1] [L11298] COND TRUE t2_pc == 1 [L11314] token += 1 [L11315] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, 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, token=2] [L11316] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, 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, token=2] [L11620] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, 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, token=2] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, 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, token=2] [L11331] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, 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, token=2] [L11332] COND TRUE E_M == 1 [L11333] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, 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, token=2] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND TRUE \read(tmp) [L11591] m_st = 0 [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11351] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11360] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11370] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11379] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11316] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11317] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET transmit2() [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, tmp_var=5, token=2] [L11206] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, tmp_var=5, token=2] [L11228] COND FALSE !(token != local + 2) [L11233] COND TRUE tmp_var <= 5 [L11234] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, tmp_var=5, token=2] [L11239] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, tmp_var=5, token=2] [L11240] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, tmp_var=5, token=2] [L11241] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, tmp_var=5, token=2] [L11242] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] - UnprovableResult [Line: 11049]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1727 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 296.4s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 110.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64665 SdHoareTripleChecker+Valid, 58.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64593 mSDsluCounter, 196084 SdHoareTripleChecker+Invalid, 52.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129108 mSDsCounter, 2462 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50903 IncrementalHoareTripleChecker+Invalid, 53365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2462 mSolverCounterUnsat, 66976 mSDtfsCounter, 50903 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2949 GetRequests, 2295 SyntacticMatches, 25 SemanticMatches, 629 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31945 ImplicationChecksByTransitivity, 154.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4798occurred in iteration=21, InterpolantAutomatonStates: 414, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.0s AutomataMinimizationTime, 21 MinimizatonAttempts, 6413 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 3681 NumberOfCodeBlocks, 3642 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 3962 ConstructedInterpolants, 0 QuantifiedInterpolants, 8318 SizeOfPredicates, 24 NumberOfNonLiveVariables, 7246 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 40 InterpolantComputations, 17 PerfectInterpolantSequences, 2132/2425 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: OVERALL_TIME: 26.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 14, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 176, DAG_INTERPRETER_EARLY_EXITS: 11, TOOLS_POST_APPLICATIONS: 197, TOOLS_POST_TIME: 17.1s, TOOLS_POST_CALL_APPLICATIONS: 126, TOOLS_POST_CALL_TIME: 3.6s, TOOLS_POST_RETURN_APPLICATIONS: 100, TOOLS_POST_RETURN_TIME: 2.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 413, TOOLS_QUANTIFIERELIM_TIME: 22.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 5.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 497, FLUID_YES_ANSWERS: 1, DOMAIN_JOIN_APPLICATIONS: 143, DOMAIN_JOIN_TIME: 2.8s, DOMAIN_ALPHA_APPLICATIONS: 1, DOMAIN_ALPHA_TIME: 0.1s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 8, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 176, DOMAIN_ISBOTTOM_TIME: 0.3s, LOOP_SUMMARIZER_APPLICATIONS: 8, LOOP_SUMMARIZER_CACHE_MISSES: 8, LOOP_SUMMARIZER_OVERALL_TIME: 3.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 3.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 8, CALL_SUMMARIZER_APPLICATIONS: 100, CALL_SUMMARIZER_CACHE_MISSES: 12, CALL_SUMMARIZER_OVERALL_TIME: 0.4s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.4s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 7082, DAG_COMPRESSION_RETAINED_NODES: 489, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-22 00:33:35,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0887d091-9645-4986-93c3-603b05bed8d2/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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