./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur --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 eeee6bfce8612e4c7a8797e69f7e2696f4f49417b2ea41e83d66cf7e8ad61db4 --- 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-38b53e6 [2022-11-25 23:16:09,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:16:09,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:16:09,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:16:09,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:16:09,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:16:09,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:16:09,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:16:09,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:16:09,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:16:09,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:16:09,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:16:09,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:16:09,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:16:09,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:16:09,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:16:09,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:16:09,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:16:09,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:16:09,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:16:09,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:16:09,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:16:09,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:16:09,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:16:09,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:16:09,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:16:09,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:16:09,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:16:09,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:16:09,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:16:09,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:16:09,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:16:09,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:16:09,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:16:09,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:16:09,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:16:09,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:16:09,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:16:09,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:16:09,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:16:09,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:16:09,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:16:09,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:16:09,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:16:09,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:16:09,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:16:09,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:16:09,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:16:09,800 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:16:09,801 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:16:09,801 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:16:09,801 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:16:09,803 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:16:09,803 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:16:09,803 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:16:09,804 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:16:09,804 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:16:09,804 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:16:09,805 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:16:09,805 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:16:09,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:16:09,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:16:09,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:16:09,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:16:09,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:16:09,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:16:09,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:16:09,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:16:09,810 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:16:09,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:16:09,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:16:09,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:16:09,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:16:09,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:16:09,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:16:09,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:16:09,813 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:16:09,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:16:09,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:16:09,813 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:16:09,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:16:09,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:16:09,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:16:09,816 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_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eeee6bfce8612e4c7a8797e69f7e2696f4f49417b2ea41e83d66cf7e8ad61db4 [2022-11-25 23:16:10,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:16:10,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:16:10,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:16:10,209 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:16:10,210 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:16:10,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c [2022-11-25 23:16:13,629 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:16:14,574 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:16:14,575 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c [2022-11-25 23:16:14,642 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/data/e9cd6722e/53be3cb3ae6c4d4d92fd519f63a19243/FLAGc4d8bb551 [2022-11-25 23:16:14,665 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/data/e9cd6722e/53be3cb3ae6c4d4d92fd519f63a19243 [2022-11-25 23:16:14,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:16:14,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:16:14,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:16:14,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:16:14,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:16:14,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:16:14" (1/1) ... [2022-11-25 23:16:14,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6bbc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:14, skipping insertion in model container [2022-11-25 23:16:14,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:16:14" (1/1) ... [2022-11-25 23:16:14,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:16:14,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:16:17,890 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_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c[380593,380606] [2022-11-25 23:16:17,920 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_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c[383339,383352] [2022-11-25 23:16:18,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:16:18,114 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:16:19,547 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_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c[380593,380606] [2022-11-25 23:16:19,554 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_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c[383339,383352] [2022-11-25 23:16:19,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:16:19,657 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:16:19,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19 WrapperNode [2022-11-25 23:16:19,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:16:19,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:16:19,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:16:19,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:16:19,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:19,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:20,448 INFO L138 Inliner]: procedures = 46, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12566 [2022-11-25 23:16:20,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:16:20,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:16:20,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:16:20,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:16:20,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:20,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:20,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:20,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:20,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:20,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:20,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:20,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:21,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:16:21,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:16:21,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:16:21,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:16:21,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (1/1) ... [2022-11-25 23:16:21,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:16:21,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:21,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:16:21,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:16:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:16:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-25 23:16:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-25 23:16:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 23:16:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 23:16:21,306 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 23:16:21,307 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 23:16:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 23:16:21,307 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 23:16:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 23:16:21,308 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 23:16:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 23:16:21,308 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 23:16:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:16:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 23:16:21,309 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 23:16:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:16:21,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:16:21,546 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:16:21,564 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:16:32,836 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:16:35,368 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:16:35,369 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 23:16:35,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:16:35 BoogieIcfgContainer [2022-11-25 23:16:35,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:16:35,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:16:35,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:16:35,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:16:35,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:16:14" (1/3) ... [2022-11-25 23:16:35,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cbe1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:16:35, skipping insertion in model container [2022-11-25 23:16:35,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:19" (2/3) ... [2022-11-25 23:16:35,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cbe1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:16:35, skipping insertion in model container [2022-11-25 23:16:35,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:16:35" (3/3) ... [2022-11-25 23:16:35,387 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.01.cil-2.c [2022-11-25 23:16:35,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:16:35,416 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:16:35,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:16:35,537 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;@a9eec4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:16:35,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:16:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 1716 states, 1689 states have (on average 1.9792776791000593) internal successors, (3343), 1694 states have internal predecessors, (3343), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-25 23:16:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 23:16:35,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:35,574 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] [2022-11-25 23:16:35,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:35,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:35,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1275591431, now seen corresponding path program 1 times [2022-11-25 23:16:35,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:35,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118473639] [2022-11-25 23:16:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:35,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:16:36,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:36,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118473639] [2022-11-25 23:16:36,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118473639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:36,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:36,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:16:36,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555144523] [2022-11-25 23:16:36,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:36,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:16:36,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:36,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:16:36,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:16:36,145 INFO L87 Difference]: Start difference. First operand has 1716 states, 1689 states have (on average 1.9792776791000593) internal successors, (3343), 1694 states have internal predecessors, (3343), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-11-25 23:16:37,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:37,424 INFO L93 Difference]: Finished difference Result 3481 states and 6831 transitions. [2022-11-25 23:16:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:16:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 35 [2022-11-25 23:16:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:37,457 INFO L225 Difference]: With dead ends: 3481 [2022-11-25 23:16:37,457 INFO L226 Difference]: Without dead ends: 1764 [2022-11-25 23:16:37,468 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 [2022-11-25 23:16:37,472 INFO L413 NwaCegarLoop]: 3188 mSDtfsCounter, 3424 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:37,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3424 Valid, 6320 Invalid, 568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:16:37,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-11-25 23:16:37,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1763. [2022-11-25 23:16:37,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1721 states have (on average 1.9604880883207438) internal successors, (3374), 1725 states have internal predecessors, (3374), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-25 23:16:37,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 3428 transitions. [2022-11-25 23:16:37,653 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 3428 transitions. Word has length 35 [2022-11-25 23:16:37,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:37,655 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 3428 transitions. [2022-11-25 23:16:37,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-11-25 23:16:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 3428 transitions. [2022-11-25 23:16:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 23:16:37,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:37,667 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:37,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:16:37,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1220668140, now seen corresponding path program 1 times [2022-11-25 23:16:37,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:37,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604471028] [2022-11-25 23:16:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:37,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:16:38,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:38,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604471028] [2022-11-25 23:16:38,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604471028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:38,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:38,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:16:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927290704] [2022-11-25 23:16:38,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:38,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:16:38,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:38,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:16:38,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:16:38,351 INFO L87 Difference]: Start difference. First operand 1763 states and 3428 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-11-25 23:16:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:39,671 INFO L93 Difference]: Finished difference Result 1995 states and 3731 transitions. [2022-11-25 23:16:39,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:16:39,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 60 [2022-11-25 23:16:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:39,685 INFO L225 Difference]: With dead ends: 1995 [2022-11-25 23:16:39,685 INFO L226 Difference]: Without dead ends: 1879 [2022-11-25 23:16:39,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:16:39,688 INFO L413 NwaCegarLoop]: 3147 mSDtfsCounter, 3444 mSDsluCounter, 6222 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3454 SdHoareTripleChecker+Valid, 9369 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:39,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3454 Valid, 9369 Invalid, 861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:16:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-25 23:16:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1863. [2022-11-25 23:16:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1789 states have (on average 1.9334823923979878) internal successors, (3459), 1794 states have internal predecessors, (3459), 48 states have call successors, (48), 25 states have call predecessors, (48), 24 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-25 23:16:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 3553 transitions. [2022-11-25 23:16:39,765 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 3553 transitions. Word has length 60 [2022-11-25 23:16:39,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:39,766 INFO L495 AbstractCegarLoop]: Abstraction has 1863 states and 3553 transitions. [2022-11-25 23:16:39,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-11-25 23:16:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 3553 transitions. [2022-11-25 23:16:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 23:16:39,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:39,769 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:16:39,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:16:39,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:39,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:39,771 INFO L85 PathProgramCache]: Analyzing trace with hash 202148845, now seen corresponding path program 1 times [2022-11-25 23:16:39,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:39,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807878598] [2022-11-25 23:16:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:39,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:16:39,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:39,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807878598] [2022-11-25 23:16:39,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807878598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:39,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:39,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:16:39,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518722781] [2022-11-25 23:16:39,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:39,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:16:39,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:16:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:16:39,848 INFO L87 Difference]: Start difference. First operand 1863 states and 3553 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2022-11-25 23:16:40,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:40,548 INFO L93 Difference]: Finished difference Result 2031 states and 3769 transitions. [2022-11-25 23:16:40,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:40,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 61 [2022-11-25 23:16:40,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:40,561 INFO L225 Difference]: With dead ends: 2031 [2022-11-25 23:16:40,561 INFO L226 Difference]: Without dead ends: 1913 [2022-11-25 23:16:40,563 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 [2022-11-25 23:16:40,564 INFO L413 NwaCegarLoop]: 3163 mSDtfsCounter, 27 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6296 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:40,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6296 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:16:40,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2022-11-25 23:16:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1883. [2022-11-25 23:16:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1805 states have (on average 1.9285318559556788) internal successors, (3481), 1810 states have internal predecessors, (3481), 50 states have call successors, (50), 27 states have call predecessors, (50), 26 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-25 23:16:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3579 transitions. [2022-11-25 23:16:40,639 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3579 transitions. Word has length 61 [2022-11-25 23:16:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:40,640 INFO L495 AbstractCegarLoop]: Abstraction has 1883 states and 3579 transitions. [2022-11-25 23:16:40,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2022-11-25 23:16:40,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3579 transitions. [2022-11-25 23:16:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 23:16:40,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:40,643 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:16:40,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:16:40,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:40,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:40,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1499595289, now seen corresponding path program 1 times [2022-11-25 23:16:40,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:40,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065430057] [2022-11-25 23:16:40,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:40,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 23:16:40,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:40,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065430057] [2022-11-25 23:16:40,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065430057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:40,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:40,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:16:40,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550670105] [2022-11-25 23:16:40,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:40,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:16:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:16:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:16:40,711 INFO L87 Difference]: Start difference. First operand 1883 states and 3579 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2022-11-25 23:16:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:41,297 INFO L93 Difference]: Finished difference Result 2239 states and 4039 transitions. [2022-11-25 23:16:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:41,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 77 [2022-11-25 23:16:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:41,310 INFO L225 Difference]: With dead ends: 2239 [2022-11-25 23:16:41,310 INFO L226 Difference]: Without dead ends: 2002 [2022-11-25 23:16:41,312 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 [2022-11-25 23:16:41,313 INFO L413 NwaCegarLoop]: 3172 mSDtfsCounter, 3331 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:41,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 3239 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:16:41,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-11-25 23:16:41,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1995. [2022-11-25 23:16:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1883 states have (on average 1.8990971853425385) internal successors, (3576), 1889 states have internal predecessors, (3576), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-25 23:16:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3716 transitions. [2022-11-25 23:16:41,400 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3716 transitions. Word has length 77 [2022-11-25 23:16:41,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:41,401 INFO L495 AbstractCegarLoop]: Abstraction has 1995 states and 3716 transitions. [2022-11-25 23:16:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2022-11-25 23:16:41,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3716 transitions. [2022-11-25 23:16:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-25 23:16:41,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:41,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:41,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:16:41,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash -585214695, now seen corresponding path program 1 times [2022-11-25 23:16:41,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:41,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856324954] [2022-11-25 23:16:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:41,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 23:16:41,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:41,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856324954] [2022-11-25 23:16:41,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856324954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:16:41,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774638863] [2022-11-25 23:16:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:41,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:41,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:41,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:41,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:16:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:41,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:16:41,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:16:41,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:16:41,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774638863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:41,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:16:41,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-25 23:16:41,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243262394] [2022-11-25 23:16:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:41,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:16:41,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:41,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:16:41,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:16:41,897 INFO L87 Difference]: Start difference. First operand 1995 states and 3716 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-11-25 23:16:42,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:42,595 INFO L93 Difference]: Finished difference Result 2237 states and 4040 transitions. [2022-11-25 23:16:42,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:42,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 88 [2022-11-25 23:16:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:42,609 INFO L225 Difference]: With dead ends: 2237 [2022-11-25 23:16:42,609 INFO L226 Difference]: Without dead ends: 2001 [2022-11-25 23:16:42,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:16:42,617 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 65 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6288 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:42,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6288 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:16:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2022-11-25 23:16:42,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1993. [2022-11-25 23:16:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1881 states have (on average 1.894736842105263) internal successors, (3564), 1887 states have internal predecessors, (3564), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-25 23:16:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3704 transitions. [2022-11-25 23:16:42,723 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3704 transitions. Word has length 88 [2022-11-25 23:16:42,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:42,724 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3704 transitions. [2022-11-25 23:16:42,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-11-25 23:16:42,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3704 transitions. [2022-11-25 23:16:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-25 23:16:42,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:42,727 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:16:42,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:16:42,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:42,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:42,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:42,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1345202647, now seen corresponding path program 1 times [2022-11-25 23:16:42,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:42,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141862823] [2022-11-25 23:16:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 23:16:43,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:43,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141862823] [2022-11-25 23:16:43,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141862823] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:16:43,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827217409] [2022-11-25 23:16:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:43,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:43,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:43,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:43,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:16:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:43,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:16:43,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:16:43,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:16:43,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827217409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:43,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:16:43,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-25 23:16:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131376631] [2022-11-25 23:16:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:43,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:16:43,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:43,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:16:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:16:43,428 INFO L87 Difference]: Start difference. First operand 1993 states and 3704 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (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) [2022-11-25 23:16:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:44,176 INFO L93 Difference]: Finished difference Result 2287 states and 4066 transitions. [2022-11-25 23:16:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:44,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (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 88 [2022-11-25 23:16:44,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:44,191 INFO L225 Difference]: With dead ends: 2287 [2022-11-25 23:16:44,191 INFO L226 Difference]: Without dead ends: 2054 [2022-11-25 23:16:44,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:16:44,205 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 3341 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3341 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:44,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3341 Valid, 3152 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:16:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-11-25 23:16:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2054. [2022-11-25 23:16:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1932 states have (on average 1.8726708074534162) internal successors, (3618), 1938 states have internal predecessors, (3618), 73 states have call successors, (73), 48 states have call predecessors, (73), 47 states have return successors, (71), 68 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-25 23:16:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3762 transitions. [2022-11-25 23:16:44,300 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3762 transitions. Word has length 88 [2022-11-25 23:16:44,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:44,301 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3762 transitions. [2022-11-25 23:16:44,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (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) [2022-11-25 23:16:44,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3762 transitions. [2022-11-25 23:16:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 23:16:44,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:44,304 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:16:44,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:16:44,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:16:44,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash -806847022, now seen corresponding path program 1 times [2022-11-25 23:16:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:44,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584015367] [2022-11-25 23:16:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:44,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 23:16:44,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:44,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584015367] [2022-11-25 23:16:44,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584015367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:16:44,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564096613] [2022-11-25 23:16:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:44,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:44,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:44,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:44,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:16:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:44,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:16:44,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:16:44,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:16:44,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564096613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:44,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:16:44,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-25 23:16:44,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934096133] [2022-11-25 23:16:44,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:44,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:16:44,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:44,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:16:44,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:16:44,953 INFO L87 Difference]: Start difference. First operand 2054 states and 3762 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), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 23:16:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:45,661 INFO L93 Difference]: Finished difference Result 2606 states and 4422 transitions. [2022-11-25 23:16:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:45,662 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), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2022-11-25 23:16:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:45,675 INFO L225 Difference]: With dead ends: 2606 [2022-11-25 23:16:45,675 INFO L226 Difference]: Without dead ends: 2199 [2022-11-25 23:16:45,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:16:45,679 INFO L413 NwaCegarLoop]: 3151 mSDtfsCounter, 39 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6269 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:45,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6269 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:16:45,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2022-11-25 23:16:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2090. [2022-11-25 23:16:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1958 states have (on average 1.86414708886619) internal successors, (3650), 1965 states have internal predecessors, (3650), 78 states have call successors, (78), 53 states have call predecessors, (78), 52 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2022-11-25 23:16:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3804 transitions. [2022-11-25 23:16:45,797 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3804 transitions. Word has length 89 [2022-11-25 23:16:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:45,798 INFO L495 AbstractCegarLoop]: Abstraction has 2090 states and 3804 transitions. [2022-11-25 23:16:45,798 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), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 23:16:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3804 transitions. [2022-11-25 23:16:45,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 23:16:45,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:45,801 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:45,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:16:46,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:46,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:46,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:46,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1559151755, now seen corresponding path program 1 times [2022-11-25 23:16:46,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:46,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801471956] [2022-11-25 23:16:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:46,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 23:16:46,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801471956] [2022-11-25 23:16:46,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801471956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:16:46,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238476748] [2022-11-25 23:16:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:46,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:46,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:46,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:46,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:16:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:46,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:16:46,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:16:46,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:16:46,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238476748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:46,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:16:46,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-25 23:16:46,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354751837] [2022-11-25 23:16:46,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:46,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:16:46,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:16:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:16:46,298 INFO L87 Difference]: Start difference. First operand 2090 states and 3804 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2022-11-25 23:16:46,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:46,979 INFO L93 Difference]: Finished difference Result 2487 states and 4283 transitions. [2022-11-25 23:16:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:46,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 89 [2022-11-25 23:16:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:46,993 INFO L225 Difference]: With dead ends: 2487 [2022-11-25 23:16:46,994 INFO L226 Difference]: Without dead ends: 2193 [2022-11-25 23:16:46,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:16:46,996 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 42 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:46,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6298 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:16:47,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2022-11-25 23:16:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2124. [2022-11-25 23:16:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 1984 states have (on average 1.8568548387096775) internal successors, (3684), 1991 states have internal predecessors, (3684), 82 states have call successors, (82), 57 states have call predecessors, (82), 56 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2022-11-25 23:16:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3846 transitions. [2022-11-25 23:16:47,096 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3846 transitions. Word has length 89 [2022-11-25 23:16:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:47,097 INFO L495 AbstractCegarLoop]: Abstraction has 2124 states and 3846 transitions. [2022-11-25 23:16:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2022-11-25 23:16:47,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3846 transitions. [2022-11-25 23:16:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 23:16:47,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:47,100 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:47,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:16:47,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:47,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:47,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1833979819, now seen corresponding path program 1 times [2022-11-25 23:16:47,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:47,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377594399] [2022-11-25 23:16:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:47,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 23:16:47,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:47,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377594399] [2022-11-25 23:16:47,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377594399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:47,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:47,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:16:47,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790054994] [2022-11-25 23:16:47,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:47,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:16:47,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:47,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:16:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:16:47,452 INFO L87 Difference]: Start difference. First operand 2124 states and 3846 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 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) [2022-11-25 23:16:48,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:48,548 INFO L93 Difference]: Finished difference Result 2868 states and 4744 transitions. [2022-11-25 23:16:48,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:16:48,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 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 90 [2022-11-25 23:16:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:48,563 INFO L225 Difference]: With dead ends: 2868 [2022-11-25 23:16:48,564 INFO L226 Difference]: Without dead ends: 2618 [2022-11-25 23:16:48,566 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 [2022-11-25 23:16:48,567 INFO L413 NwaCegarLoop]: 3195 mSDtfsCounter, 3404 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3404 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:48,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3404 Valid, 6353 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:16:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-11-25 23:16:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2422. [2022-11-25 23:16:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2196 states have (on average 1.7950819672131149) internal successors, (3942), 2202 states have internal predecessors, (3942), 133 states have call successors, (133), 92 states have call predecessors, (133), 91 states have return successors, (131), 128 states have call predecessors, (131), 131 states have call successors, (131) [2022-11-25 23:16:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 4206 transitions. [2022-11-25 23:16:48,786 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 4206 transitions. Word has length 90 [2022-11-25 23:16:48,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:48,787 INFO L495 AbstractCegarLoop]: Abstraction has 2422 states and 4206 transitions. [2022-11-25 23:16:48,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 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) [2022-11-25 23:16:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 4206 transitions. [2022-11-25 23:16:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-25 23:16:48,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:48,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:48,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:16:48,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash 955597827, now seen corresponding path program 1 times [2022-11-25 23:16:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:48,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828789440] [2022-11-25 23:16:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:16:48,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:16:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:16:48,947 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:16:48,948 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:16:48,949 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-25 23:16:48,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-25 23:16:48,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:16:48,956 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:48,962 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:16:49,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:16:49 BoogieIcfgContainer [2022-11-25 23:16:49,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:16:49,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:16:49,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:16:49,105 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:16:49,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:16:35" (3/4) ... [2022-11-25 23:16:49,109 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 23:16:49,217 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:16:49,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:16:49,218 INFO L158 Benchmark]: Toolchain (without parser) took 34542.69ms. Allocated memory was 213.9MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 147.4MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 289.1MB. Max. memory is 16.1GB. [2022-11-25 23:16:49,219 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 146.8MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:16:49,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4980.28ms. Allocated memory was 213.9MB in the beginning and 316.7MB in the end (delta: 102.8MB). Free memory was 146.6MB in the beginning and 183.8MB in the end (delta: -37.2MB). Peak memory consumption was 110.4MB. Max. memory is 16.1GB. [2022-11-25 23:16:49,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 790.39ms. Allocated memory is still 316.7MB. Free memory was 183.8MB in the beginning and 177.5MB in the end (delta: 6.3MB). Peak memory consumption was 112.2MB. Max. memory is 16.1GB. [2022-11-25 23:16:49,220 INFO L158 Benchmark]: Boogie Preprocessor took 619.92ms. Allocated memory was 316.7MB in the beginning and 633.3MB in the end (delta: 316.7MB). Free memory was 177.5MB in the beginning and 465.4MB in the end (delta: -287.9MB). Peak memory consumption was 93.9MB. Max. memory is 16.1GB. [2022-11-25 23:16:49,221 INFO L158 Benchmark]: RCFGBuilder took 14302.93ms. Allocated memory was 633.3MB in the beginning and 1.6GB in the end (delta: 962.6MB). Free memory was 465.4MB in the beginning and 1.2GB in the end (delta: -727.1MB). Peak memory consumption was 457.2MB. Max. memory is 16.1GB. [2022-11-25 23:16:49,221 INFO L158 Benchmark]: TraceAbstraction took 13725.94ms. Allocated memory was 1.6GB in the beginning and 2.7GB in the end (delta: 1.1GB). Free memory was 1.2GB in the beginning and 2.3GB in the end (delta: -1.2GB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:16:49,222 INFO L158 Benchmark]: Witness Printer took 112.88ms. Allocated memory is still 2.7GB. Free memory was 2.3GB in the beginning and 2.3GB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:16:49,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 146.8MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4980.28ms. Allocated memory was 213.9MB in the beginning and 316.7MB in the end (delta: 102.8MB). Free memory was 146.6MB in the beginning and 183.8MB in the end (delta: -37.2MB). Peak memory consumption was 110.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 790.39ms. Allocated memory is still 316.7MB. Free memory was 183.8MB in the beginning and 177.5MB in the end (delta: 6.3MB). Peak memory consumption was 112.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 619.92ms. Allocated memory was 316.7MB in the beginning and 633.3MB in the end (delta: 316.7MB). Free memory was 177.5MB in the beginning and 465.4MB in the end (delta: -287.9MB). Peak memory consumption was 93.9MB. Max. memory is 16.1GB. * RCFGBuilder took 14302.93ms. Allocated memory was 633.3MB in the beginning and 1.6GB in the end (delta: 962.6MB). Free memory was 465.4MB in the beginning and 1.2GB in the end (delta: -727.1MB). Peak memory consumption was 457.2MB. Max. memory is 16.1GB. * TraceAbstraction took 13725.94ms. Allocated memory was 1.6GB in the beginning and 2.7GB in the end (delta: 1.1GB). Free memory was 1.2GB in the beginning and 2.3GB in the end (delta: -1.2GB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 112.88ms. Allocated memory is still 2.7GB. Free memory was 2.3GB in the beginning and 2.3GB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. 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 m_st ; [L11180] int t1_st ; [L11181] int m_i ; [L11182] int t1_i ; [L11183] int M_E = 2; [L11184] int T1_E = 2; [L11185] int E_M = 2; [L11186] int E_1 = 2; [L11190] int token ; [L11192] int local ; [L11651] COND FALSE !(__VERIFIER_nondet_int()) [L11654] CALL main2() [L11638] int __retres1 ; [L11642] CALL init_model() [L11553] m_i = 1 [L11554] t1_i = 1 [L11642] RET init_model() [L11643] CALL start_simulation() [L11579] int kernel_st ; [L11580] int tmp ; [L11581] int tmp___0 ; [L11585] 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_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, token=0] [L11586] 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_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, token=0] [L11587] CALL init_threads() [L11335] COND TRUE m_i == 1 [L11336] m_st = 0 [L11340] COND TRUE t1_i == 1 [L11341] t1_st = 0 [L11587] RET init_threads() [L11588] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_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_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, token=0] [L11424] COND FALSE !(M_E == 0) [L11429] COND FALSE !(T1_E == 0) [L11434] COND FALSE !(E_M == 0) [L11439] COND FALSE !(E_1 == 0) [L11588] 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_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, token=0] [L11589] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_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_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, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=0, \old(t1_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_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, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_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_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, token=0] [L11299] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_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_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, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=0, \old(t1_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_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, token=0] [L11308] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_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_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, token=0] [L11318] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_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_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, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) [L11589] 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_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, token=0] [L11590] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_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_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, token=0] [L11452] COND FALSE !(M_E == 1) [L11457] COND FALSE !(T1_E == 1) [L11462] COND FALSE !(E_M == 1) [L11467] COND FALSE !(E_1 == 1) [L11590] 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_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, token=0] [L11593] COND TRUE 1 [L11596] kernel_st = 1 [L11597] CALL eval() [L11371] 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_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, token=0] [L11375] 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_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, token=0] [L11378] 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_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, token=0] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] 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_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, token=0] [L11378] tmp = exists_runnable_thread() [L11380] 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_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, tmp=1, token=0] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] 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_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, tmp=1, tmp_ndt_1=0, token=0] [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE \read(tmp_ndt_2) [L11404] t1_st = 1 [L11405] CALL transmit1() [L11253] 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_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, token=0] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 [L11405] RET transmit1() [L11375] 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_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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L11378] 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_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, token=0] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] 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_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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L11378] tmp = exists_runnable_thread() [L11380] 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_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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE \read(tmp_ndt_1) [L11390] m_st = 1 [L11391] CALL master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] 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_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, tmp_var=0, token=0] [L11208] COND TRUE 1 [L11211] token = __VERIFIER_nondet_int() [L11212] local = token [L11213] 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_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, tmp_var=0, token=0] [L11214] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_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_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, token=0] [L11506] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_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_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, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=1, \old(t1_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_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, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_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_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, token=0] [L11299] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_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_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, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=1, \old(t1_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_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, token=0] [L11308] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_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_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, token=0] [L11309] COND TRUE E_1 == 1 [L11310] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_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_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, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND TRUE \read(tmp___0) [L11493] t1_st = 0 [L11506] RET activate_threads() VAL [\old(m_st)=1, \old(t1_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_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, token=0] [L11214] 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_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, tmp_var=0, token=0] [L11215] E_1 = 2 [L11216] m_pc = 1 [L11217] 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_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, tmp_var=0, token=0] [L11391] RET master() [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE \read(tmp_ndt_2) [L11404] t1_st = 1 [L11405] CALL transmit1() [L11253] 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_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, token=0] [L11256] COND TRUE t1_pc == 1 [L11272] token += 1 [L11273] 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_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=1, token=1] [L11274] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_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_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=1, token=1] [L11506] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_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_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=1, token=1] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=2, \old(t1_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_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=1, token=1] [L11289] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_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_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=1, token=1] [L11290] COND TRUE E_M == 1 [L11291] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_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_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=1, token=1] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND TRUE \read(tmp) [L11485] m_st = 0 [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=2, \old(t1_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_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=1, token=1] [L11308] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_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_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=1, token=1] [L11309] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_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_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=1, token=1] [L11318] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_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_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=1, token=1] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) [L11506] RET activate_threads() VAL [\old(m_st)=2, \old(t1_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_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=1, token=1] [L11274] 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_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=1, token=1] [L11275] 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_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=1, token=1] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 [L11405] RET transmit1() [L11375] 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_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, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L11378] 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_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, token=1] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] 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_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, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L11378] tmp = exists_runnable_thread() [L11380] 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_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, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE \read(tmp_ndt_1) [L11390] m_st = 1 [L11391] CALL master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] 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_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, tmp_var=5, token=1] [L11200] 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_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, tmp_var=5, token=1] [L11222] COND FALSE !(token != local + 1) [L11227] COND TRUE tmp_var <= 5 [L11228] 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_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, tmp_var=5, token=1] [L11233] 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_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, tmp_var=5, token=1] [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_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, tmp_var=5, token=1] [L11235] 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_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, tmp_var=5, token=1] [L11236] 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_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, token=1] [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_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, token=1] - UnprovableResult [Line: 11094]: 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, 1716 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 13.5s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17127 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17117 mSDsluCounter, 53584 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25102 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4204 IncrementalHoareTripleChecker+Invalid, 4318 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 28482 mSDtfsCounter, 4204 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 414 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2422occurred in iteration=9, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 436 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1124 NumberOfCodeBlocks, 1124 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1018 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1553 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 488/531 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-25 23:16:49,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6153aa38-fdff-4b46-8c5c-fbc3c7a5f5cb/bin/utaipan-ByfvJB40ur/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