./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI --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 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 --- 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-5e519f3 [2022-11-03 02:20:25,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:20:25,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:20:25,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:20:25,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:20:25,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:20:25,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:20:25,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:20:25,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:20:25,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:20:25,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:20:25,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:20:25,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:20:25,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:20:25,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:20:25,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:20:25,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:20:25,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:20:25,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:20:25,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:20:25,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:20:25,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:20:25,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:20:25,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:20:25,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:20:25,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:20:25,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:20:25,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:20:25,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:20:25,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:20:25,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:20:25,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:20:25,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:20:25,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:20:25,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:20:25,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:20:25,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:20:25,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:20:25,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:20:25,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:20:25,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:20:25,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:20:25,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:20:25,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:20:25,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:20:25,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:20:25,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:20:25,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:20:25,765 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:20:25,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:20:25,766 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:20:25,766 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:20:25,767 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:20:25,768 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:20:25,768 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:20:25,768 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:20:25,769 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:20:25,769 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:20:25,769 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:20:25,770 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:20:25,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:20:25,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:20:25,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:20:25,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:20:25,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:20:25,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:20:25,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:20:25,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:20:25,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:20:25,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:20:25,775 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:20:25,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:20:25,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:20:25,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:20:25,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:25,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:20:25,777 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:20:25,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:20:25,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:20:25,778 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:20:25,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:20:25,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:20:25,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:20:25,779 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_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 [2022-11-03 02:20:26,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:20:26,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:20:26,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:20:26,163 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:20:26,164 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:20:26,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2022-11-03 02:20:26,256 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/data/56c3459e9/0da6e4f7600b4e21b8a8414dda413aaf/FLAGd7cfd09c5 [2022-11-03 02:20:27,397 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:20:27,398 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2022-11-03 02:20:27,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/data/56c3459e9/0da6e4f7600b4e21b8a8414dda413aaf/FLAGd7cfd09c5 [2022-11-03 02:20:27,665 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/data/56c3459e9/0da6e4f7600b4e21b8a8414dda413aaf [2022-11-03 02:20:27,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:20:27,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:20:27,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:27,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:20:27,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:20:27,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1d96e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27, skipping insertion in model container [2022-11-03 02:20:27,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:20:27,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:20:30,401 WARN L230 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_f561f22a-8dd5-42dc-be77-21f00c42f5ca/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[378560,378573] [2022-11-03 02:20:30,438 WARN L230 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_f561f22a-8dd5-42dc-be77-21f00c42f5ca/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[383339,383352] [2022-11-03 02:20:30,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:30,667 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:20:31,879 WARN L230 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_f561f22a-8dd5-42dc-be77-21f00c42f5ca/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[378560,378573] [2022-11-03 02:20:31,886 WARN L230 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_f561f22a-8dd5-42dc-be77-21f00c42f5ca/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[383339,383352] [2022-11-03 02:20:31,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:32,040 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:20:32,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32 WrapperNode [2022-11-03 02:20:32,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:32,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:32,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:20:32,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:20:32,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:32,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:32,509 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12682 [2022-11-03 02:20:32,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:32,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:20:32,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:20:32,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:20:32,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:32,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:32,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:32,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:32,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:32,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:33,042 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:33,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:33,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:20:33,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:20:33,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:20:33,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:20:33,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (1/1) ... [2022-11-03 02:20:33,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:33,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:33,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:20:33,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:20:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:20:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-03 02:20:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-03 02:20:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 02:20:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 02:20:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-03 02:20:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-03 02:20:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-03 02:20:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-03 02:20:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-03 02:20:33,266 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-03 02:20:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-03 02:20:33,266 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-03 02:20:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-03 02:20:33,266 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-03 02:20:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:20:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:20:33,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:20:33,421 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:20:33,423 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:20:42,935 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:20:45,068 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:20:45,068 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-03 02:20:45,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:45 BoogieIcfgContainer [2022-11-03 02:20:45,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:20:45,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:20:45,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:20:45,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:20:45,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:20:27" (1/3) ... [2022-11-03 02:20:45,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640cb349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:45, skipping insertion in model container [2022-11-03 02:20:45,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:32" (2/3) ... [2022-11-03 02:20:45,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640cb349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:45, skipping insertion in model container [2022-11-03 02:20:45,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:45" (3/3) ... [2022-11-03 02:20:45,085 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.03.cil-1.c [2022-11-03 02:20:45,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:20:45,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:20:45,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:20:45,228 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;@67b30a9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:20:45,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:20:45,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 1738 states, 1709 states have (on average 1.9748390871854886) internal successors, (3375), 1714 states have internal predecessors, (3375), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-03 02:20:45,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 02:20:45,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:45,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:45,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:45,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash -554508062, now seen corresponding path program 1 times [2022-11-03 02:20:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:45,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282289122] [2022-11-03 02:20:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:45,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:45,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:45,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282289122] [2022-11-03 02:20:45,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282289122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:45,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:45,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:20:45,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205495445] [2022-11-03 02:20:45,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:45,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:20:45,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:20:45,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:20:45,765 INFO L87 Difference]: Start difference. First operand has 1738 states, 1709 states have (on average 1.9748390871854886) internal successors, (3375), 1714 states have internal predecessors, (3375), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2022-11-03 02:20:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:46,940 INFO L93 Difference]: Finished difference Result 3547 states and 6943 transitions. [2022-11-03 02:20:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:20:46,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 41 [2022-11-03 02:20:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:46,970 INFO L225 Difference]: With dead ends: 3547 [2022-11-03 02:20:46,970 INFO L226 Difference]: Without dead ends: 1808 [2022-11-03 02:20:46,981 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 [2022-11-03 02:20:46,986 INFO L413 NwaCegarLoop]: 3248 mSDtfsCounter, 3490 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 6432 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:46,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3490 Valid, 6432 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:20:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-11-03 02:20:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1807. [2022-11-03 02:20:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1761 states have (on average 1.9522998296422487) internal successors, (3438), 1765 states have internal predecessors, (3438), 32 states have call successors, (32), 13 states have call predecessors, (32), 12 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-03 02:20:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3500 transitions. [2022-11-03 02:20:47,165 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3500 transitions. Word has length 41 [2022-11-03 02:20:47,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:47,166 INFO L495 AbstractCegarLoop]: Abstraction has 1807 states and 3500 transitions. [2022-11-03 02:20:47,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2022-11-03 02:20:47,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3500 transitions. [2022-11-03 02:20:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:20:47,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:47,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:47,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:20:47,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash -604417362, now seen corresponding path program 1 times [2022-11-03 02:20:47,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:47,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444330354] [2022-11-03 02:20:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:47,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:20:47,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:47,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444330354] [2022-11-03 02:20:47,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444330354] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:47,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198764777] [2022-11-03 02:20:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:47,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:47,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:47,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:47,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:20:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:47,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:47,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:20:47,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:47,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198764777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:47,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:47,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:20:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178745202] [2022-11-03 02:20:47,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:47,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:47,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:47,765 INFO L87 Difference]: Start difference. First operand 1807 states and 3500 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:48,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:48,381 INFO L93 Difference]: Finished difference Result 2122 states and 3949 transitions. [2022-11-03 02:20:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:48,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-11-03 02:20:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:48,402 INFO L225 Difference]: With dead ends: 2122 [2022-11-03 02:20:48,407 INFO L226 Difference]: Without dead ends: 1961 [2022-11-03 02:20:48,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:48,410 INFO L413 NwaCegarLoop]: 3204 mSDtfsCounter, 3374 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:48,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3374 Valid, 3301 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:20:48,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2022-11-03 02:20:48,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1955. [2022-11-03 02:20:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1873 states have (on average 1.9183128670581955) internal successors, (3593), 1878 states have internal predecessors, (3593), 56 states have call successors, (56), 25 states have call predecessors, (56), 24 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-03 02:20:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3703 transitions. [2022-11-03 02:20:48,522 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3703 transitions. Word has length 74 [2022-11-03 02:20:48,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:48,522 INFO L495 AbstractCegarLoop]: Abstraction has 1955 states and 3703 transitions. [2022-11-03 02:20:48,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:48,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3703 transitions. [2022-11-03 02:20:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:20:48,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:48,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:48,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:20:48,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:48,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:48,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2036667664, now seen corresponding path program 1 times [2022-11-03 02:20:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:48,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837459775] [2022-11-03 02:20:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:20:49,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:49,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837459775] [2022-11-03 02:20:49,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837459775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:49,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477109223] [2022-11-03 02:20:49,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:49,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:49,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:49,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:49,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:20:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:49,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:49,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:20:49,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:49,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477109223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:49,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:49,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:20:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462613628] [2022-11-03 02:20:49,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:49,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:49,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:49,253 INFO L87 Difference]: Start difference. First operand 1955 states and 3703 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:49,813 INFO L93 Difference]: Finished difference Result 2560 states and 4558 transitions. [2022-11-03 02:20:49,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:49,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-11-03 02:20:49,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:49,835 INFO L225 Difference]: With dead ends: 2560 [2022-11-03 02:20:49,835 INFO L226 Difference]: Without dead ends: 2251 [2022-11-03 02:20:49,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:49,841 INFO L413 NwaCegarLoop]: 3173 mSDtfsCounter, 3371 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3371 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:49,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3371 Valid, 3270 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:49,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2022-11-03 02:20:49,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2243. [2022-11-03 02:20:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2091 states have (on average 1.860832137733142) internal successors, (3891), 2098 states have internal predecessors, (3891), 102 states have call successors, (102), 49 states have call predecessors, (102), 48 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-03 02:20:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4093 transitions. [2022-11-03 02:20:49,969 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4093 transitions. Word has length 74 [2022-11-03 02:20:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:49,970 INFO L495 AbstractCegarLoop]: Abstraction has 2243 states and 4093 transitions. [2022-11-03 02:20:49,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:49,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4093 transitions. [2022-11-03 02:20:49,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:20:49,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:49,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:50,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:50,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:50,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:50,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:50,194 INFO L85 PathProgramCache]: Analyzing trace with hash 770705902, now seen corresponding path program 1 times [2022-11-03 02:20:50,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:50,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935776989] [2022-11-03 02:20:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:50,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:20:50,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:50,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935776989] [2022-11-03 02:20:50,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935776989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:50,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:50,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:50,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190275271] [2022-11-03 02:20:50,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:50,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:50,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:50,681 INFO L87 Difference]: Start difference. First operand 2243 states and 4093 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2022-11-03 02:20:51,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:51,911 INFO L93 Difference]: Finished difference Result 3547 states and 5884 transitions. [2022-11-03 02:20:51,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:20:51,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 74 [2022-11-03 02:20:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:51,928 INFO L225 Difference]: With dead ends: 3547 [2022-11-03 02:20:51,928 INFO L226 Difference]: Without dead ends: 2951 [2022-11-03 02:20:51,931 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 [2022-11-03 02:20:51,932 INFO L413 NwaCegarLoop]: 3180 mSDtfsCounter, 3607 mSDsluCounter, 10080 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3619 SdHoareTripleChecker+Valid, 12580 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:51,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3619 Valid, 12580 Invalid, 1163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:20:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2022-11-03 02:20:52,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2787. [2022-11-03 02:20:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2499 states have (on average 1.776310524209684) internal successors, (4439), 2510 states have internal predecessors, (4439), 190 states have call successors, (190), 97 states have call predecessors, (190), 96 states have return successors, (188), 180 states have call predecessors, (188), 188 states have call successors, (188) [2022-11-03 02:20:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4817 transitions. [2022-11-03 02:20:52,066 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4817 transitions. Word has length 74 [2022-11-03 02:20:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:52,067 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4817 transitions. [2022-11-03 02:20:52,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2022-11-03 02:20:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4817 transitions. [2022-11-03 02:20:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:20:52,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:52,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:52,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:20:52,071 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:52,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:52,072 INFO L85 PathProgramCache]: Analyzing trace with hash -534618991, now seen corresponding path program 1 times [2022-11-03 02:20:52,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:52,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690576099] [2022-11-03 02:20:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:52,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:20:52,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:52,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690576099] [2022-11-03 02:20:52,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690576099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:52,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661034787] [2022-11-03 02:20:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:52,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:52,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:52,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:52,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:20:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:52,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:52,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:20:52,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:52,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661034787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:52,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:52,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 02:20:52,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389741952] [2022-11-03 02:20:52,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:52,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:52,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:52,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:52,599 INFO L87 Difference]: Start difference. First operand 2787 states and 4817 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:20:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:53,224 INFO L93 Difference]: Finished difference Result 3674 states and 6046 transitions. [2022-11-03 02:20:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:53,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-11-03 02:20:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:53,239 INFO L225 Difference]: With dead ends: 3674 [2022-11-03 02:20:53,240 INFO L226 Difference]: Without dead ends: 3070 [2022-11-03 02:20:53,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:53,244 INFO L413 NwaCegarLoop]: 3211 mSDtfsCounter, 44 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:53,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 6376 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:20:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2022-11-03 02:20:53,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2939. [2022-11-03 02:20:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2635 states have (on average 1.7666034155597723) internal successors, (4655), 2646 states have internal predecessors, (4655), 198 states have call successors, (198), 105 states have call predecessors, (198), 104 states have return successors, (196), 188 states have call predecessors, (196), 196 states have call successors, (196) [2022-11-03 02:20:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 5049 transitions. [2022-11-03 02:20:53,374 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 5049 transitions. Word has length 87 [2022-11-03 02:20:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:53,377 INFO L495 AbstractCegarLoop]: Abstraction has 2939 states and 5049 transitions. [2022-11-03 02:20:53,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:20:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 5049 transitions. [2022-11-03 02:20:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 02:20:53,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:53,383 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:53,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:53,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:53,597 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:53,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2134626193, now seen corresponding path program 1 times [2022-11-03 02:20:53,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:53,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354400449] [2022-11-03 02:20:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-03 02:20:53,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:53,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354400449] [2022-11-03 02:20:53,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354400449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:53,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:53,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:53,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418840169] [2022-11-03 02:20:53,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:53,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:53,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:53,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:53,695 INFO L87 Difference]: Start difference. First operand 2939 states and 5049 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-03 02:20:54,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:54,246 INFO L93 Difference]: Finished difference Result 4876 states and 7734 transitions. [2022-11-03 02:20:54,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:54,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 97 [2022-11-03 02:20:54,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:54,265 INFO L225 Difference]: With dead ends: 4876 [2022-11-03 02:20:54,266 INFO L226 Difference]: Without dead ends: 3583 [2022-11-03 02:20:54,271 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 [2022-11-03 02:20:54,273 INFO L413 NwaCegarLoop]: 3204 mSDtfsCounter, 3367 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:54,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 3301 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2022-11-03 02:20:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3567. [2022-11-03 02:20:54,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3567 states, 3119 states have (on average 1.7015068932350113) internal successors, (5307), 3134 states have internal predecessors, (5307), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2022-11-03 02:20:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3567 states to 3567 states and 5885 transitions. [2022-11-03 02:20:54,450 INFO L78 Accepts]: Start accepts. Automaton has 3567 states and 5885 transitions. Word has length 97 [2022-11-03 02:20:54,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:54,452 INFO L495 AbstractCegarLoop]: Abstraction has 3567 states and 5885 transitions. [2022-11-03 02:20:54,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-03 02:20:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states and 5885 transitions. [2022-11-03 02:20:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:20:54,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:54,460 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:54,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:20:54,461 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:54,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1770730894, now seen corresponding path program 1 times [2022-11-03 02:20:54,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:54,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752906595] [2022-11-03 02:20:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:54,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 02:20:54,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:54,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752906595] [2022-11-03 02:20:54,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752906595] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:54,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131881971] [2022-11-03 02:20:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:54,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:54,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:54,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:54,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:20:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:54,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:20:54,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:20:54,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:54,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131881971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:54,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:54,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 02:20:54,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388761209] [2022-11-03 02:20:54,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:54,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:54,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:54,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:54,964 INFO L87 Difference]: Start difference. First operand 3567 states and 5885 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-11-03 02:20:55,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:55,603 INFO L93 Difference]: Finished difference Result 4871 states and 7755 transitions. [2022-11-03 02:20:55,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:55,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 110 [2022-11-03 02:20:55,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:55,620 INFO L225 Difference]: With dead ends: 4871 [2022-11-03 02:20:55,621 INFO L226 Difference]: Without dead ends: 3579 [2022-11-03 02:20:55,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:55,627 INFO L413 NwaCegarLoop]: 3224 mSDtfsCounter, 99 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 6378 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:55,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 6378 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:20:55,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2022-11-03 02:20:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3559. [2022-11-03 02:20:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3559 states, 3111 states have (on average 1.6904532304725168) internal successors, (5259), 3126 states have internal predecessors, (5259), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2022-11-03 02:20:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 5837 transitions. [2022-11-03 02:20:55,812 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 5837 transitions. Word has length 110 [2022-11-03 02:20:55,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:55,812 INFO L495 AbstractCegarLoop]: Abstraction has 3559 states and 5837 transitions. [2022-11-03 02:20:55,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-11-03 02:20:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 5837 transitions. [2022-11-03 02:20:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:20:55,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:55,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:20:55,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:56,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:20:56,034 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:56,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:56,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1278783220, now seen corresponding path program 1 times [2022-11-03 02:20:56,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:56,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286972908] [2022-11-03 02:20:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:56,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 02:20:56,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:56,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286972908] [2022-11-03 02:20:56,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286972908] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:56,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667634154] [2022-11-03 02:20:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:56,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:56,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:56,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:56,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:20:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:56,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:56,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:20:56,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:56,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667634154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:56,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:56,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 02:20:56,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902357689] [2022-11-03 02:20:56,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:56,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:56,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:56,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:56,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:56,465 INFO L87 Difference]: Start difference. First operand 3559 states and 5837 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (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) [2022-11-03 02:20:57,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:57,118 INFO L93 Difference]: Finished difference Result 5287 states and 8126 transitions. [2022-11-03 02:20:57,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:57,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (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 110 [2022-11-03 02:20:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:57,138 INFO L225 Difference]: With dead ends: 5287 [2022-11-03 02:20:57,139 INFO L226 Difference]: Without dead ends: 4007 [2022-11-03 02:20:57,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:57,145 INFO L413 NwaCegarLoop]: 3174 mSDtfsCounter, 3377 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:57,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3377 Valid, 3198 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:57,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2022-11-03 02:20:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 4007. [2022-11-03 02:20:57,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 3495 states have (on average 1.6317596566523604) internal successors, (5703), 3510 states have internal predecessors, (5703), 310 states have call successors, (310), 201 states have call predecessors, (310), 200 states have return successors, (308), 296 states have call predecessors, (308), 308 states have call successors, (308) [2022-11-03 02:20:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 6321 transitions. [2022-11-03 02:20:57,355 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 6321 transitions. Word has length 110 [2022-11-03 02:20:57,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:57,356 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 6321 transitions. [2022-11-03 02:20:57,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (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) [2022-11-03 02:20:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 6321 transitions. [2022-11-03 02:20:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 02:20:57,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:57,364 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:20:57,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-03 02:20:57,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:57,593 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:57,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:57,594 INFO L85 PathProgramCache]: Analyzing trace with hash 168817909, now seen corresponding path program 1 times [2022-11-03 02:20:57,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:57,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673930043] [2022-11-03 02:20:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:57,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 02:20:57,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:57,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673930043] [2022-11-03 02:20:57,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673930043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:57,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63688879] [2022-11-03 02:20:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:57,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:57,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:57,840 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:57,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:20:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:57,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:20:57,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:20:58,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:58,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63688879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:58,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:58,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 02:20:58,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430989141] [2022-11-03 02:20:58,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:58,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:58,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:58,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:58,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:58,023 INFO L87 Difference]: Start difference. First operand 4007 states and 6321 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (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) [2022-11-03 02:20:58,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:58,728 INFO L93 Difference]: Finished difference Result 7199 states and 10524 transitions. [2022-11-03 02:20:58,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:58,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (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 111 [2022-11-03 02:20:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:58,758 INFO L225 Difference]: With dead ends: 7199 [2022-11-03 02:20:58,758 INFO L226 Difference]: Without dead ends: 4839 [2022-11-03 02:20:58,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:58,768 INFO L413 NwaCegarLoop]: 3183 mSDtfsCounter, 57 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:58,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6333 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:20:58,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2022-11-03 02:20:59,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4235. [2022-11-03 02:20:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 3695 states have (on average 1.6267929634641407) internal successors, (6011), 3711 states have internal predecessors, (6011), 324 states have call successors, (324), 215 states have call predecessors, (324), 214 states have return successors, (322), 309 states have call predecessors, (322), 322 states have call successors, (322) [2022-11-03 02:20:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 6657 transitions. [2022-11-03 02:20:59,028 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 6657 transitions. Word has length 111 [2022-11-03 02:20:59,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:59,028 INFO L495 AbstractCegarLoop]: Abstraction has 4235 states and 6657 transitions. [2022-11-03 02:20:59,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (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) [2022-11-03 02:20:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 6657 transitions. [2022-11-03 02:20:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 02:20:59,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:59,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:59,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:59,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:59,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:59,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1838717512, now seen corresponding path program 1 times [2022-11-03 02:20:59,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:59,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392767558] [2022-11-03 02:20:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:59,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-03 02:20:59,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:59,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392767558] [2022-11-03 02:20:59,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392767558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:59,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643092291] [2022-11-03 02:20:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:59,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:59,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:59,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:59,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:20:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:59,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:59,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:20:59,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:59,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643092291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:59,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:59,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-03 02:20:59,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234151650] [2022-11-03 02:20:59,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:59,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:59,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:59,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:59,552 INFO L87 Difference]: Start difference. First operand 4235 states and 6657 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-11-03 02:21:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:00,415 INFO L93 Difference]: Finished difference Result 6519 states and 9705 transitions. [2022-11-03 02:21:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:00,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 111 [2022-11-03 02:21:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:00,431 INFO L225 Difference]: With dead ends: 6519 [2022-11-03 02:21:00,431 INFO L226 Difference]: Without dead ends: 4793 [2022-11-03 02:21:00,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:00,437 INFO L413 NwaCegarLoop]: 3212 mSDtfsCounter, 60 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 6378 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:00,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 6378 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2022-11-03 02:21:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4515. [2022-11-03 02:21:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4515 states, 3943 states have (on average 1.623890438752219) internal successors, (6403), 3959 states have internal predecessors, (6403), 340 states have call successors, (340), 231 states have call predecessors, (340), 230 states have return successors, (338), 325 states have call predecessors, (338), 338 states have call successors, (338) [2022-11-03 02:21:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4515 states to 4515 states and 7081 transitions. [2022-11-03 02:21:00,666 INFO L78 Accepts]: Start accepts. Automaton has 4515 states and 7081 transitions. Word has length 111 [2022-11-03 02:21:00,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:00,666 INFO L495 AbstractCegarLoop]: Abstraction has 4515 states and 7081 transitions. [2022-11-03 02:21:00,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-11-03 02:21:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4515 states and 7081 transitions. [2022-11-03 02:21:00,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 02:21:00,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:00,677 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:21:00,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-03 02:21:00,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:00,893 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:00,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:00,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1108603976, now seen corresponding path program 1 times [2022-11-03 02:21:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:00,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381358193] [2022-11-03 02:21:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:00,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-03 02:21:01,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:01,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381358193] [2022-11-03 02:21:01,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381358193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:01,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853584014] [2022-11-03 02:21:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:01,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:01,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:01,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:01,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:21:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:01,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:01,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:21:01,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:01,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853584014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:01,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:21:01,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-03 02:21:01,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213899047] [2022-11-03 02:21:01,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:01,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:01,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:01,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:01,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:01,217 INFO L87 Difference]: Start difference. First operand 4515 states and 7081 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:21:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:01,943 INFO L93 Difference]: Finished difference Result 6981 states and 10437 transitions. [2022-11-03 02:21:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:01,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-11-03 02:21:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:01,960 INFO L225 Difference]: With dead ends: 6981 [2022-11-03 02:21:01,960 INFO L226 Difference]: Without dead ends: 5503 [2022-11-03 02:21:01,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:01,966 INFO L413 NwaCegarLoop]: 3230 mSDtfsCounter, 65 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6396 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:01,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6396 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:01,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2022-11-03 02:21:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 4995. [2022-11-03 02:21:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4995 states, 4359 states have (on average 1.6102317045193852) internal successors, (7019), 4375 states have internal predecessors, (7019), 372 states have call successors, (372), 263 states have call predecessors, (372), 262 states have return successors, (370), 357 states have call predecessors, (370), 370 states have call successors, (370) [2022-11-03 02:21:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4995 states to 4995 states and 7761 transitions. [2022-11-03 02:21:02,241 INFO L78 Accepts]: Start accepts. Automaton has 4995 states and 7761 transitions. Word has length 112 [2022-11-03 02:21:02,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:02,242 INFO L495 AbstractCegarLoop]: Abstraction has 4995 states and 7761 transitions. [2022-11-03 02:21:02,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:21:02,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4995 states and 7761 transitions. [2022-11-03 02:21:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 02:21:02,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:02,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:21:02,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:02,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:21:02,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:02,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:02,465 INFO L85 PathProgramCache]: Analyzing trace with hash 255681219, now seen corresponding path program 1 times [2022-11-03 02:21:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:02,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676686502] [2022-11-03 02:21:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:02,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-03 02:21:02,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:02,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676686502] [2022-11-03 02:21:02,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676686502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:02,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815247928] [2022-11-03 02:21:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:02,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:02,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:02,590 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:02,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:21:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:02,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:02,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:21:02,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:02,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815247928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:02,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:21:02,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-03 02:21:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751321257] [2022-11-03 02:21:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:02,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:02,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:02,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:02,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:02,777 INFO L87 Difference]: Start difference. First operand 4995 states and 7761 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:21:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:03,727 INFO L93 Difference]: Finished difference Result 7977 states and 11825 transitions. [2022-11-03 02:21:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:03,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-11-03 02:21:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:03,753 INFO L225 Difference]: With dead ends: 7977 [2022-11-03 02:21:03,753 INFO L226 Difference]: Without dead ends: 6251 [2022-11-03 02:21:03,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:03,760 INFO L413 NwaCegarLoop]: 3235 mSDtfsCounter, 71 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 6401 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:03,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 6401 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:03,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2022-11-03 02:21:04,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 5659. [2022-11-03 02:21:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5659 states, 4927 states have (on average 1.5894053176375076) internal successors, (7831), 4943 states have internal predecessors, (7831), 420 states have call successors, (420), 311 states have call predecessors, (420), 310 states have return successors, (418), 405 states have call predecessors, (418), 418 states have call successors, (418) [2022-11-03 02:21:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5659 states to 5659 states and 8669 transitions. [2022-11-03 02:21:04,196 INFO L78 Accepts]: Start accepts. Automaton has 5659 states and 8669 transitions. Word has length 112 [2022-11-03 02:21:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:04,197 INFO L495 AbstractCegarLoop]: Abstraction has 5659 states and 8669 transitions. [2022-11-03 02:21:04,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:21:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5659 states and 8669 transitions. [2022-11-03 02:21:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 02:21:04,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:04,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:04,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:04,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 02:21:04,433 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:04,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash 703746860, now seen corresponding path program 1 times [2022-11-03 02:21:04,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:04,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155565784] [2022-11-03 02:21:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:04,681 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:21:04,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:04,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155565784] [2022-11-03 02:21:04,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155565784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:04,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72242416] [2022-11-03 02:21:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:04,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:04,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:04,684 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:04,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:21:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:04,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:21:04,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:21:04,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:04,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72242416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:04,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:21:04,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2022-11-03 02:21:04,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052322543] [2022-11-03 02:21:04,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:04,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:04,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:04,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:04,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:04,993 INFO L87 Difference]: Start difference. First operand 5659 states and 8669 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:21:06,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:06,484 INFO L93 Difference]: Finished difference Result 11169 states and 16023 transitions. [2022-11-03 02:21:06,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:06,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 112 [2022-11-03 02:21:06,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:06,510 INFO L225 Difference]: With dead ends: 11169 [2022-11-03 02:21:06,511 INFO L226 Difference]: Without dead ends: 7157 [2022-11-03 02:21:06,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:21:06,521 INFO L413 NwaCegarLoop]: 3181 mSDtfsCounter, 3573 mSDsluCounter, 6745 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3585 SdHoareTripleChecker+Valid, 9465 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:06,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3585 Valid, 9465 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:21:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2022-11-03 02:21:06,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7153. [2022-11-03 02:21:06,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7153 states, 6119 states have (on average 1.5275371792776598) internal successors, (9347), 6141 states have internal predecessors, (9347), 594 states have call successors, (594), 439 states have call predecessors, (594), 438 states have return successors, (592), 573 states have call predecessors, (592), 592 states have call successors, (592) [2022-11-03 02:21:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 10533 transitions. [2022-11-03 02:21:06,988 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 10533 transitions. Word has length 112 [2022-11-03 02:21:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:06,989 INFO L495 AbstractCegarLoop]: Abstraction has 7153 states and 10533 transitions. [2022-11-03 02:21:06,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:21:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 10533 transitions. [2022-11-03 02:21:07,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 02:21:07,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:07,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:07,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:07,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:07,217 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:07,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:07,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1916763306, now seen corresponding path program 1 times [2022-11-03 02:21:07,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:07,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893417234] [2022-11-03 02:21:07,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:07,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 02:21:07,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:07,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893417234] [2022-11-03 02:21:07,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893417234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:07,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852170439] [2022-11-03 02:21:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:07,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:07,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:07,441 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:07,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:21:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:07,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:21:07,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-03 02:21:07,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:07,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852170439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:07,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:21:07,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2022-11-03 02:21:07,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301917261] [2022-11-03 02:21:07,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:07,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:07,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:07,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:07,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:07,689 INFO L87 Difference]: Start difference. First operand 7153 states and 10533 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:21:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:09,052 INFO L93 Difference]: Finished difference Result 14750 states and 20484 transitions. [2022-11-03 02:21:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:09,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 113 [2022-11-03 02:21:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:09,087 INFO L225 Difference]: With dead ends: 14750 [2022-11-03 02:21:09,087 INFO L226 Difference]: Without dead ends: 9244 [2022-11-03 02:21:09,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:21:09,104 INFO L413 NwaCegarLoop]: 3173 mSDtfsCounter, 3583 mSDsluCounter, 6739 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 9452 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:09,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3595 Valid, 9452 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:21:09,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2022-11-03 02:21:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 9240. [2022-11-03 02:21:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9240 states, 7776 states have (on average 1.4681069958847737) internal successors, (11416), 7807 states have internal predecessors, (11416), 842 states have call successors, (842), 621 states have call predecessors, (842), 620 states have return successors, (840), 812 states have call predecessors, (840), 840 states have call successors, (840) [2022-11-03 02:21:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9240 states to 9240 states and 13098 transitions. [2022-11-03 02:21:09,912 INFO L78 Accepts]: Start accepts. Automaton has 9240 states and 13098 transitions. Word has length 113 [2022-11-03 02:21:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:09,912 INFO L495 AbstractCegarLoop]: Abstraction has 9240 states and 13098 transitions. [2022-11-03 02:21:09,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:21:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 9240 states and 13098 transitions. [2022-11-03 02:21:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:21:09,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:09,928 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:09,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:10,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 02:21:10,145 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:10,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash -408692205, now seen corresponding path program 1 times [2022-11-03 02:21:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:10,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123367493] [2022-11-03 02:21:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:10,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:21:10,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:10,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123367493] [2022-11-03 02:21:10,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123367493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:10,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29247714] [2022-11-03 02:21:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:10,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:10,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:10,320 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:10,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 02:21:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:10,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:21:10,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:21:10,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:10,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29247714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:10,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:21:10,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-03 02:21:10,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152858544] [2022-11-03 02:21:10,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:10,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:21:10,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:10,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:21:10,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:10,532 INFO L87 Difference]: Start difference. First operand 9240 states and 13098 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:21:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:11,870 INFO L93 Difference]: Finished difference Result 12457 states and 17284 transitions. [2022-11-03 02:21:11,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:11,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2022-11-03 02:21:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:11,901 INFO L225 Difference]: With dead ends: 12457 [2022-11-03 02:21:11,901 INFO L226 Difference]: Without dead ends: 9712 [2022-11-03 02:21:11,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:11,911 INFO L413 NwaCegarLoop]: 3234 mSDtfsCounter, 3381 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 6557 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:11,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3381 Valid, 6557 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:11,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2022-11-03 02:21:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 9482. [2022-11-03 02:21:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9482 states, 7971 states have (on average 1.4629281144147535) internal successors, (11661), 8020 states have internal predecessors, (11661), 849 states have call successors, (849), 625 states have call predecessors, (849), 660 states have return successors, (883), 837 states have call predecessors, (883), 847 states have call successors, (883) [2022-11-03 02:21:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9482 states to 9482 states and 13393 transitions. [2022-11-03 02:21:12,649 INFO L78 Accepts]: Start accepts. Automaton has 9482 states and 13393 transitions. Word has length 117 [2022-11-03 02:21:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:12,650 INFO L495 AbstractCegarLoop]: Abstraction has 9482 states and 13393 transitions. [2022-11-03 02:21:12,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:21:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 9482 states and 13393 transitions. [2022-11-03 02:21:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:21:12,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:12,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:12,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:12,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 02:21:12,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:12,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash -237944294, now seen corresponding path program 1 times [2022-11-03 02:21:12,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:12,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630771330] [2022-11-03 02:21:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:12,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 02:21:12,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:12,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630771330] [2022-11-03 02:21:12,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630771330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:12,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784933553] [2022-11-03 02:21:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:12,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:12,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:12,960 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:12,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 02:21:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:13,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:21:13,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:21:13,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:13,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784933553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:13,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:21:13,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-03 02:21:13,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229492134] [2022-11-03 02:21:13,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:13,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:13,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:13,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:13,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:21:13,141 INFO L87 Difference]: Start difference. First operand 9482 states and 13393 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:21:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:14,202 INFO L93 Difference]: Finished difference Result 12293 states and 17122 transitions. [2022-11-03 02:21:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:14,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2022-11-03 02:21:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:14,233 INFO L225 Difference]: With dead ends: 12293 [2022-11-03 02:21:14,233 INFO L226 Difference]: Without dead ends: 9224 [2022-11-03 02:21:14,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:21:14,244 INFO L413 NwaCegarLoop]: 3176 mSDtfsCounter, 22 mSDsluCounter, 3388 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6335 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:14,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 6335 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:14,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9224 states. [2022-11-03 02:21:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9224 to 8786. [2022-11-03 02:21:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8786 states, 7383 states have (on average 1.4758228362454286) internal successors, (10896), 7405 states have internal predecessors, (10896), 813 states have call successors, (813), 589 states have call predecessors, (813), 588 states have return successors, (811), 792 states have call predecessors, (811), 811 states have call successors, (811) [2022-11-03 02:21:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8786 states to 8786 states and 12520 transitions. [2022-11-03 02:21:15,093 INFO L78 Accepts]: Start accepts. Automaton has 8786 states and 12520 transitions. Word has length 118 [2022-11-03 02:21:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:15,093 INFO L495 AbstractCegarLoop]: Abstraction has 8786 states and 12520 transitions. [2022-11-03 02:21:15,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:21:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 8786 states and 12520 transitions. [2022-11-03 02:21:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:21:15,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:15,118 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:15,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:15,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:21:15,341 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:15,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:15,341 INFO L85 PathProgramCache]: Analyzing trace with hash -896277157, now seen corresponding path program 1 times [2022-11-03 02:21:15,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:15,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779215991] [2022-11-03 02:21:15,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:15,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 02:21:15,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:15,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779215991] [2022-11-03 02:21:15,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779215991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:15,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853177692] [2022-11-03 02:21:15,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:15,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:15,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:15,569 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:15,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:21:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:15,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:15,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:21:15,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:15,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853177692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:15,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:21:15,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-11-03 02:21:15,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249048818] [2022-11-03 02:21:15,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:15,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:15,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:15,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:15,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:15,796 INFO L87 Difference]: Start difference. First operand 8786 states and 12520 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2022-11-03 02:21:16,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:16,869 INFO L93 Difference]: Finished difference Result 14823 states and 20438 transitions. [2022-11-03 02:21:16,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:16,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 118 [2022-11-03 02:21:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:16,897 INFO L225 Difference]: With dead ends: 14823 [2022-11-03 02:21:16,898 INFO L226 Difference]: Without dead ends: 9813 [2022-11-03 02:21:16,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:16,908 INFO L413 NwaCegarLoop]: 3183 mSDtfsCounter, 3352 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:16,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3352 Valid, 3214 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:21:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9813 states. [2022-11-03 02:21:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9813 to 9721. [2022-11-03 02:21:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9721 states, 8243 states have (on average 1.4396457600388208) internal successors, (11867), 8265 states have internal predecessors, (11867), 823 states have call successors, (823), 654 states have call predecessors, (823), 653 states have return successors, (877), 802 states have call predecessors, (877), 821 states have call successors, (877) [2022-11-03 02:21:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9721 states to 9721 states and 13567 transitions. [2022-11-03 02:21:17,598 INFO L78 Accepts]: Start accepts. Automaton has 9721 states and 13567 transitions. Word has length 118 [2022-11-03 02:21:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:17,598 INFO L495 AbstractCegarLoop]: Abstraction has 9721 states and 13567 transitions. [2022-11-03 02:21:17,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2022-11-03 02:21:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 9721 states and 13567 transitions. [2022-11-03 02:21:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:21:17,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:17,615 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:17,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:17,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:21:17,841 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:17,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1723632955, now seen corresponding path program 1 times [2022-11-03 02:21:17,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:17,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100068815] [2022-11-03 02:21:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-03 02:21:17,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:17,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100068815] [2022-11-03 02:21:17,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100068815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:17,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537636299] [2022-11-03 02:21:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:17,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:17,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:17,915 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:17,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 02:21:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:18,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:21:18,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 02:21:18,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:18,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537636299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:18,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:21:18,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-03 02:21:18,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752566067] [2022-11-03 02:21:18,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:18,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:18,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:18,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:18,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:21:18,116 INFO L87 Difference]: Start difference. First operand 9721 states and 13567 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:21:19,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:19,159 INFO L93 Difference]: Finished difference Result 15347 states and 21023 transitions. [2022-11-03 02:21:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:19,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2022-11-03 02:21:19,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:19,192 INFO L225 Difference]: With dead ends: 15347 [2022-11-03 02:21:19,192 INFO L226 Difference]: Without dead ends: 9707 [2022-11-03 02:21:19,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:21:19,206 INFO L413 NwaCegarLoop]: 3241 mSDtfsCounter, 94 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:19,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 6394 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9707 states. [2022-11-03 02:21:19,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9707 to 9593. [2022-11-03 02:21:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9593 states, 8115 states have (on average 1.418977202711029) internal successors, (11515), 8137 states have internal predecessors, (11515), 823 states have call successors, (823), 654 states have call predecessors, (823), 653 states have return successors, (877), 802 states have call predecessors, (877), 821 states have call successors, (877) [2022-11-03 02:21:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 13215 transitions. [2022-11-03 02:21:19,929 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 13215 transitions. Word has length 118 [2022-11-03 02:21:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:19,930 INFO L495 AbstractCegarLoop]: Abstraction has 9593 states and 13215 transitions. [2022-11-03 02:21:19,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:21:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 13215 transitions. [2022-11-03 02:21:19,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:21:19,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:19,944 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:19,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-03 02:21:20,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 02:21:20,169 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:20,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:20,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1140686886, now seen corresponding path program 1 times [2022-11-03 02:21:20,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:20,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347154661] [2022-11-03 02:21:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:20,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 02:21:20,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:20,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347154661] [2022-11-03 02:21:20,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347154661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:20,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:20,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:21:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216163121] [2022-11-03 02:21:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:20,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:21:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:20,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:21:20,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:21:20,295 INFO L87 Difference]: Start difference. First operand 9593 states and 13215 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:21:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:21,466 INFO L93 Difference]: Finished difference Result 14593 states and 19514 transitions. [2022-11-03 02:21:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:21:21,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 115 [2022-11-03 02:21:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:21,499 INFO L225 Difference]: With dead ends: 14593 [2022-11-03 02:21:21,500 INFO L226 Difference]: Without dead ends: 10549 [2022-11-03 02:21:21,513 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 [2022-11-03 02:21:21,513 INFO L413 NwaCegarLoop]: 3203 mSDtfsCounter, 3377 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 6393 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:21,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3377 Valid, 6393 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10549 states. [2022-11-03 02:21:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10549 to 10336. [2022-11-03 02:21:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10336 states, 8810 states have (on average 1.3917139614074916) internal successors, (12261), 8832 states have internal predecessors, (12261), 829 states have call successors, (829), 696 states have call predecessors, (829), 695 states have return successors, (879), 808 states have call predecessors, (879), 827 states have call successors, (879) [2022-11-03 02:21:22,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10336 states to 10336 states and 13969 transitions. [2022-11-03 02:21:22,389 INFO L78 Accepts]: Start accepts. Automaton has 10336 states and 13969 transitions. Word has length 115 [2022-11-03 02:21:22,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:22,389 INFO L495 AbstractCegarLoop]: Abstraction has 10336 states and 13969 transitions. [2022-11-03 02:21:22,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:21:22,390 INFO L276 IsEmpty]: Start isEmpty. Operand 10336 states and 13969 transitions. [2022-11-03 02:21:22,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 02:21:22,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:22,402 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:22,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:21:22,402 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:22,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1718597664, now seen corresponding path program 1 times [2022-11-03 02:21:22,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:22,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289375364] [2022-11-03 02:21:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-03 02:21:22,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:22,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289375364] [2022-11-03 02:21:22,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289375364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:22,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:22,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:21:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119549399] [2022-11-03 02:21:22,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:22,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:22,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:22,592 INFO L87 Difference]: Start difference. First operand 10336 states and 13969 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:21:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:24,249 INFO L93 Difference]: Finished difference Result 18018 states and 23459 transitions. [2022-11-03 02:21:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:21:24,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2022-11-03 02:21:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:24,292 INFO L225 Difference]: With dead ends: 18018 [2022-11-03 02:21:24,292 INFO L226 Difference]: Without dead ends: 13546 [2022-11-03 02:21:24,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:24,308 INFO L413 NwaCegarLoop]: 3221 mSDtfsCounter, 104 mSDsluCounter, 6756 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 9514 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:24,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 9514 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:21:24,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13546 states. [2022-11-03 02:21:25,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13546 to 13066. [2022-11-03 02:21:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13066 states, 10962 states have (on average 1.353311439518336) internal successors, (14835), 11020 states have internal predecessors, (14835), 1145 states have call successors, (1145), 949 states have call predecessors, (1145), 957 states have return successors, (1275), 1097 states have call predecessors, (1275), 1143 states have call successors, (1275) [2022-11-03 02:21:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13066 states to 13066 states and 17255 transitions. [2022-11-03 02:21:25,613 INFO L78 Accepts]: Start accepts. Automaton has 13066 states and 17255 transitions. Word has length 116 [2022-11-03 02:21:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:25,613 INFO L495 AbstractCegarLoop]: Abstraction has 13066 states and 17255 transitions. [2022-11-03 02:21:25,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:21:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 13066 states and 17255 transitions. [2022-11-03 02:21:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 02:21:25,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:25,628 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:25,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 02:21:25,629 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:25,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1419528625, now seen corresponding path program 1 times [2022-11-03 02:21:25,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:25,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204763505] [2022-11-03 02:21:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:25,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:21:26,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:26,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204763505] [2022-11-03 02:21:26,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204763505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:26,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945529780] [2022-11-03 02:21:26,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:26,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:26,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:26,209 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:26,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-03 02:21:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:26,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:21:26,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:21:26,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 02:21:26,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945529780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:26,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1999096998] [2022-11-03 02:21:26,947 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 02:21:26,947 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:21:26,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:21:26,957 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:21:26,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:21:36,346 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 75 for LOIs [2022-11-03 02:21:36,351 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2022-11-03 02:21:38,924 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2022-11-03 02:21:38,975 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2022-11-03 02:21:38,996 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 71 for LOIs [2022-11-03 02:21:39,005 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 86 for LOIs [2022-11-03 02:21:39,305 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 131 for LOIs [2022-11-03 02:21:40,061 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:22:06,750 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '387894#(and (= ~a15~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (= |#NULL.base| 0))' at error location [2022-11-03 02:22:06,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:22:06,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:22:06,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 6] total 21 [2022-11-03 02:22:06,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373036793] [2022-11-03 02:22:06,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:22:06,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:22:06,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:06,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:22:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=4623, Unknown=0, NotChecked=0, Total=5112 [2022-11-03 02:22:06,754 INFO L87 Difference]: Start difference. First operand 13066 states and 17255 transitions. Second operand has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-11-03 02:22:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:11,832 INFO L93 Difference]: Finished difference Result 24294 states and 31582 transitions. [2022-11-03 02:22:11,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-03 02:22:11,832 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 121 [2022-11-03 02:22:11,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:11,865 INFO L225 Difference]: With dead ends: 24294 [2022-11-03 02:22:11,865 INFO L226 Difference]: Without dead ends: 12843 [2022-11-03 02:22:11,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 333 SyntacticMatches, 15 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8792 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=1374, Invalid=18086, Unknown=0, NotChecked=0, Total=19460 [2022-11-03 02:22:11,892 INFO L413 NwaCegarLoop]: 3292 mSDtfsCounter, 14815 mSDsluCounter, 31991 mSDsCounter, 0 mSdLazyCounter, 4328 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14826 SdHoareTripleChecker+Valid, 32935 SdHoareTripleChecker+Invalid, 4869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 4328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:11,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14826 Valid, 32935 Invalid, 4869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [541 Valid, 4328 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 02:22:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12843 states. [2022-11-03 02:22:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12843 to 9720. [2022-11-03 02:22:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9720 states, 8302 states have (on average 1.3986991086485183) internal successors, (11612), 8327 states have internal predecessors, (11612), 748 states have call successors, (748), 666 states have call predecessors, (748), 668 states have return successors, (794), 726 states have call predecessors, (794), 746 states have call successors, (794) [2022-11-03 02:22:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9720 states to 9720 states and 13154 transitions. [2022-11-03 02:22:12,846 INFO L78 Accepts]: Start accepts. Automaton has 9720 states and 13154 transitions. Word has length 121 [2022-11-03 02:22:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:12,847 INFO L495 AbstractCegarLoop]: Abstraction has 9720 states and 13154 transitions. [2022-11-03 02:22:12,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-11-03 02:22:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 9720 states and 13154 transitions. [2022-11-03 02:22:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:22:12,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:12,853 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:12,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:13,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:13,081 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash -978382447, now seen corresponding path program 1 times [2022-11-03 02:22:13,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:13,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422647288] [2022-11-03 02:22:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:13,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:22:13,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:13,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422647288] [2022-11-03 02:22:13,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422647288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:13,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200718560] [2022-11-03 02:22:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:13,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:13,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:13,276 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:13,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 02:22:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:13,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 02:22:13,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:13,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:22:13,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200718560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:13,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:22:13,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-11-03 02:22:13,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136600611] [2022-11-03 02:22:13,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:13,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:22:13,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:13,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:22:13,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:22:13,522 INFO L87 Difference]: Start difference. First operand 9720 states and 13154 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 02:22:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:15,301 INFO L93 Difference]: Finished difference Result 16949 states and 22056 transitions. [2022-11-03 02:22:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:22:15,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 117 [2022-11-03 02:22:15,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:15,329 INFO L225 Difference]: With dead ends: 16949 [2022-11-03 02:22:15,329 INFO L226 Difference]: Without dead ends: 11638 [2022-11-03 02:22:15,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:22:15,338 INFO L413 NwaCegarLoop]: 3225 mSDtfsCounter, 216 mSDsluCounter, 13409 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 15725 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:15,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 15725 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:22:15,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11638 states. [2022-11-03 02:22:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11638 to 10635. [2022-11-03 02:22:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10635 states, 9008 states have (on average 1.3769982238010656) internal successors, (12404), 9047 states have internal predecessors, (12404), 862 states have call successors, (862), 753 states have call predecessors, (862), 763 states have return successors, (964), 834 states have call predecessors, (964), 860 states have call successors, (964) [2022-11-03 02:22:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10635 states to 10635 states and 14230 transitions. [2022-11-03 02:22:16,147 INFO L78 Accepts]: Start accepts. Automaton has 10635 states and 14230 transitions. Word has length 117 [2022-11-03 02:22:16,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:16,147 INFO L495 AbstractCegarLoop]: Abstraction has 10635 states and 14230 transitions. [2022-11-03 02:22:16,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 02:22:16,148 INFO L276 IsEmpty]: Start isEmpty. Operand 10635 states and 14230 transitions. [2022-11-03 02:22:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-03 02:22:16,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:16,154 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:16,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:16,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:16,354 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:16,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1311080883, now seen corresponding path program 1 times [2022-11-03 02:22:16,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:16,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672412208] [2022-11-03 02:22:16,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:16,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 02:22:16,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:16,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672412208] [2022-11-03 02:22:16,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672412208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:16,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111751344] [2022-11-03 02:22:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:16,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:16,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:16,607 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:16,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-03 02:22:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:16,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:22:16,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:22:16,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 02:22:17,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111751344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:17,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [305144505] [2022-11-03 02:22:17,290 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-11-03 02:22:17,290 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:22:17,290 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:22:17,291 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:22:17,291 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:22:23,358 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 76 for LOIs [2022-11-03 02:22:23,362 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2022-11-03 02:22:28,259 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2022-11-03 02:22:28,311 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2022-11-03 02:22:28,329 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 72 for LOIs [2022-11-03 02:22:28,337 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 132 for LOIs [2022-11-03 02:22:28,546 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 120 for LOIs [2022-11-03 02:22:28,862 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:22:55,618 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '471008#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-03 02:22:55,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:22:55,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:22:55,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2022-11-03 02:22:55,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156556429] [2022-11-03 02:22:55,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:22:55,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 02:22:55,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 02:22:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=4665, Unknown=0, NotChecked=0, Total=5112 [2022-11-03 02:22:55,622 INFO L87 Difference]: Start difference. First operand 10635 states and 14230 transitions. Second operand has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 02:23:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:01,398 INFO L93 Difference]: Finished difference Result 19244 states and 25127 transitions. [2022-11-03 02:23:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-11-03 02:23:01,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 124 [2022-11-03 02:23:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:01,420 INFO L225 Difference]: With dead ends: 19244 [2022-11-03 02:23:01,420 INFO L226 Difference]: Without dead ends: 11153 [2022-11-03 02:23:01,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 352 SyntacticMatches, 16 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13853 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=2000, Invalid=28450, Unknown=0, NotChecked=0, Total=30450 [2022-11-03 02:23:01,436 INFO L413 NwaCegarLoop]: 3477 mSDtfsCounter, 11377 mSDsluCounter, 26851 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11384 SdHoareTripleChecker+Valid, 28292 SdHoareTripleChecker+Invalid, 4405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:01,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11384 Valid, 28292 Invalid, 4405 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [395 Valid, 4010 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:23:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11153 states. [2022-11-03 02:23:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11153 to 8079. [2022-11-03 02:23:02,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8079 states, 6978 states have (on average 1.420464316423044) internal successors, (9912), 6995 states have internal predecessors, (9912), 566 states have call successors, (566), 529 states have call predecessors, (566), 533 states have return successors, (628), 554 states have call predecessors, (628), 564 states have call successors, (628) [2022-11-03 02:23:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 11106 transitions. [2022-11-03 02:23:02,306 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 11106 transitions. Word has length 124 [2022-11-03 02:23:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:02,306 INFO L495 AbstractCegarLoop]: Abstraction has 8079 states and 11106 transitions. [2022-11-03 02:23:02,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 02:23:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 11106 transitions. [2022-11-03 02:23:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-03 02:23:02,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:02,311 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:02,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:02,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-03 02:23:02,511 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:02,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:02,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1894062133, now seen corresponding path program 1 times [2022-11-03 02:23:02,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:02,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111839468] [2022-11-03 02:23:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:02,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 02:23:02,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:02,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111839468] [2022-11-03 02:23:02,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111839468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:23:02,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156695841] [2022-11-03 02:23:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:02,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:02,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:02,757 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:23:02,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-03 02:23:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:02,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:23:02,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:23:03,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:23:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 02:23:03,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156695841] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:23:03,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2089329563] [2022-11-03 02:23:03,436 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-03 02:23:03,436 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:23:03,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:23:03,437 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:23:03,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:23:09,601 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 77 for LOIs [2022-11-03 02:23:09,607 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2022-11-03 02:23:18,559 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2022-11-03 02:23:18,598 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2022-11-03 02:23:18,615 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 73 for LOIs [2022-11-03 02:23:18,630 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 90 for LOIs [2022-11-03 02:23:18,790 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-03 02:23:19,098 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:23:32,200 WARN L234 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 365 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:49,701 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '508290#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (<= ~t2_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-03 02:23:49,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:23:49,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:23:49,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 18 [2022-11-03 02:23:49,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955579068] [2022-11-03 02:23:49,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:23:49,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 02:23:49,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 02:23:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=5202, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 02:23:49,704 INFO L87 Difference]: Start difference. First operand 8079 states and 11106 transitions. Second operand has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 02:23:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:55,513 INFO L93 Difference]: Finished difference Result 13899 states and 18254 transitions. [2022-11-03 02:23:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-11-03 02:23:55,514 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 126 [2022-11-03 02:23:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:55,527 INFO L225 Difference]: With dead ends: 13899 [2022-11-03 02:23:55,527 INFO L226 Difference]: Without dead ends: 8612 [2022-11-03 02:23:55,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 358 SyntacticMatches, 16 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17279 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=2363, Invalid=35467, Unknown=0, NotChecked=0, Total=37830 [2022-11-03 02:23:55,536 INFO L413 NwaCegarLoop]: 3402 mSDtfsCounter, 14679 mSDsluCounter, 25810 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14685 SdHoareTripleChecker+Valid, 27356 SdHoareTripleChecker+Invalid, 4184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:55,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14685 Valid, 27356 Invalid, 4184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [496 Valid, 3688 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 02:23:55,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8612 states. [2022-11-03 02:23:56,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8612 to 6838. [2022-11-03 02:23:56,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 5955 states have (on average 1.4408060453400504) internal successors, (8580), 5970 states have internal predecessors, (8580), 447 states have call successors, (447), 428 states have call predecessors, (447), 434 states have return successors, (503), 439 states have call predecessors, (503), 445 states have call successors, (503) [2022-11-03 02:23:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 9530 transitions. [2022-11-03 02:23:56,157 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 9530 transitions. Word has length 126 [2022-11-03 02:23:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:56,157 INFO L495 AbstractCegarLoop]: Abstraction has 6838 states and 9530 transitions. [2022-11-03 02:23:56,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 02:23:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 9530 transitions. [2022-11-03 02:23:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:23:56,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:56,163 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:56,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:56,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-03 02:23:56,363 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:56,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1717450905, now seen corresponding path program 1 times [2022-11-03 02:23:56,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:56,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098448] [2022-11-03 02:23:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:56,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 23 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:23:57,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:57,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098448] [2022-11-03 02:23:57,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098448] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:23:57,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380079645] [2022-11-03 02:23:57,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:57,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:57,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:57,041 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:23:57,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-03 02:23:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:57,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:23:57,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:23:57,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:23:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-03 02:23:58,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380079645] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:23:58,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [826100603] [2022-11-03 02:23:58,310 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-11-03 02:23:58,312 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:23:58,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:23:58,313 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:23:58,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:24:12,593 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 78 for LOIs [2022-11-03 02:24:12,599 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 127 for LOIs [2022-11-03 02:24:12,632 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 240 for LOIs [2022-11-03 02:24:16,683 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 208 for LOIs [2022-11-03 02:24:16,742 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 123 for LOIs [2022-11-03 02:24:16,766 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 92 for LOIs [2022-11-03 02:24:16,967 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 121 for LOIs [2022-11-03 02:24:17,612 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:24:28,529 WARN L234 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 279 DAG size of output: 229 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:56,355 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '536346#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (<= ~t2_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (<= ~t3_pc~0 1) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (<= 0 ~t3_pc~0) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-03 02:24:56,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:24:56,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:24:56,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 36 [2022-11-03 02:24:56,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576324016] [2022-11-03 02:24:56,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:24:56,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 02:24:56,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:56,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 02:24:56,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=8809, Unknown=0, NotChecked=0, Total=9506 [2022-11-03 02:24:56,358 INFO L87 Difference]: Start difference. First operand 6838 states and 9530 transitions. Second operand has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2022-11-03 02:25:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:05,083 INFO L93 Difference]: Finished difference Result 14852 states and 19482 transitions. [2022-11-03 02:25:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-03 02:25:05,083 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) Word has length 128 [2022-11-03 02:25:05,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:05,098 INFO L225 Difference]: With dead ends: 14852 [2022-11-03 02:25:05,099 INFO L226 Difference]: Without dead ends: 10539 [2022-11-03 02:25:05,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 313 SyntacticMatches, 13 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10221 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=2367, Invalid=22439, Unknown=0, NotChecked=0, Total=24806 [2022-11-03 02:25:05,107 INFO L413 NwaCegarLoop]: 3212 mSDtfsCounter, 20572 mSDsluCounter, 40341 mSDsCounter, 0 mSdLazyCounter, 6201 mSolverCounterSat, 1862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20572 SdHoareTripleChecker+Valid, 40779 SdHoareTripleChecker+Invalid, 8063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1862 IncrementalHoareTripleChecker+Valid, 6201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:05,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20572 Valid, 40779 Invalid, 8063 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1862 Valid, 6201 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 02:25:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10539 states. [2022-11-03 02:25:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10539 to 6549. [2022-11-03 02:25:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 5717 states have (on average 1.4483120517754067) internal successors, (8280), 5730 states have internal predecessors, (8280), 427 states have call successors, (427), 404 states have call predecessors, (427), 403 states have return successors, (425), 414 states have call predecessors, (425), 425 states have call successors, (425) [2022-11-03 02:25:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 9132 transitions. [2022-11-03 02:25:05,960 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 9132 transitions. Word has length 128 [2022-11-03 02:25:05,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:05,960 INFO L495 AbstractCegarLoop]: Abstraction has 6549 states and 9132 transitions. [2022-11-03 02:25:05,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2022-11-03 02:25:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 9132 transitions. [2022-11-03 02:25:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-03 02:25:05,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:05,963 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:05,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:06,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-03 02:25:06,175 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:06,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1877972872, now seen corresponding path program 1 times [2022-11-03 02:25:06,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:06,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646722409] [2022-11-03 02:25:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:06,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 31 proven. 19 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 02:25:06,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:06,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646722409] [2022-11-03 02:25:06,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646722409] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:25:06,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093819934] [2022-11-03 02:25:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:06,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:06,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:06,325 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:06,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-03 02:25:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:06,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:06,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 02:25:06,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:06,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093819934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:06,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:25:06,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-11-03 02:25:06,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305249123] [2022-11-03 02:25:06,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:06,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:06,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:06,562 INFO L87 Difference]: Start difference. First operand 6549 states and 9132 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:25:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:07,585 INFO L93 Difference]: Finished difference Result 11165 states and 14746 transitions. [2022-11-03 02:25:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:07,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 142 [2022-11-03 02:25:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:07,596 INFO L225 Difference]: With dead ends: 11165 [2022-11-03 02:25:07,597 INFO L226 Difference]: Without dead ends: 6837 [2022-11-03 02:25:07,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:07,603 INFO L413 NwaCegarLoop]: 3182 mSDtfsCounter, 3353 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:07,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 3211 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:25:07,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6837 states. [2022-11-03 02:25:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6837 to 6655. [2022-11-03 02:25:08,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6655 states, 5817 states have (on average 1.4321815368746778) internal successors, (8331), 5830 states have internal predecessors, (8331), 427 states have call successors, (427), 410 states have call predecessors, (427), 409 states have return successors, (435), 414 states have call predecessors, (435), 425 states have call successors, (435) [2022-11-03 02:25:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6655 states to 6655 states and 9193 transitions. [2022-11-03 02:25:08,210 INFO L78 Accepts]: Start accepts. Automaton has 6655 states and 9193 transitions. Word has length 142 [2022-11-03 02:25:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:08,210 INFO L495 AbstractCegarLoop]: Abstraction has 6655 states and 9193 transitions. [2022-11-03 02:25:08,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:25:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6655 states and 9193 transitions. [2022-11-03 02:25:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-03 02:25:08,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:08,213 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:08,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:08,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:08,414 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:08,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:08,414 INFO L85 PathProgramCache]: Analyzing trace with hash -14720069, now seen corresponding path program 1 times [2022-11-03 02:25:08,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:08,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326579056] [2022-11-03 02:25:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:08,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-03 02:25:08,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:08,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326579056] [2022-11-03 02:25:08,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326579056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:25:08,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417881462] [2022-11-03 02:25:08,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:08,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:08,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:08,482 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:08,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-03 02:25:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:08,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:25:08,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 02:25:08,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:08,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417881462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:08,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:25:08,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-03 02:25:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477963598] [2022-11-03 02:25:08,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:08,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:08,690 INFO L87 Difference]: Start difference. First operand 6655 states and 9193 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:25:09,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:09,785 INFO L93 Difference]: Finished difference Result 10847 states and 14327 transitions. [2022-11-03 02:25:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:09,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 142 [2022-11-03 02:25:09,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:09,796 INFO L225 Difference]: With dead ends: 10847 [2022-11-03 02:25:09,796 INFO L226 Difference]: Without dead ends: 6410 [2022-11-03 02:25:09,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:09,806 INFO L413 NwaCegarLoop]: 3214 mSDtfsCounter, 93 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 6329 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:09,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 6329 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2022-11-03 02:25:10,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 6334. [2022-11-03 02:25:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6334 states, 5534 states have (on average 1.4110950487893026) internal successors, (7809), 5547 states have internal predecessors, (7809), 408 states have call successors, (408), 391 states have call predecessors, (408), 390 states have return successors, (416), 395 states have call predecessors, (416), 406 states have call successors, (416) [2022-11-03 02:25:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6334 states to 6334 states and 8633 transitions. [2022-11-03 02:25:10,510 INFO L78 Accepts]: Start accepts. Automaton has 6334 states and 8633 transitions. Word has length 142 [2022-11-03 02:25:10,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:10,511 INFO L495 AbstractCegarLoop]: Abstraction has 6334 states and 8633 transitions. [2022-11-03 02:25:10,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:25:10,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6334 states and 8633 transitions. [2022-11-03 02:25:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-03 02:25:10,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:10,514 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:10,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:10,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-03 02:25:10,714 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:10,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:10,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2064322620, now seen corresponding path program 1 times [2022-11-03 02:25:10,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:10,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327885642] [2022-11-03 02:25:10,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:10,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 02:25:10,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:10,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327885642] [2022-11-03 02:25:10,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327885642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:25:10,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479533097] [2022-11-03 02:25:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:10,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:10,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:10,914 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:10,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-03 02:25:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:11,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 02:25:11,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:25:11,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:11,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479533097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:11,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:25:11,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-11-03 02:25:11,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565967846] [2022-11-03 02:25:11,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:11,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:11,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:11,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:11,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:11,131 INFO L87 Difference]: Start difference. First operand 6334 states and 8633 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 02:25:12,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:12,752 INFO L93 Difference]: Finished difference Result 11273 states and 14321 transitions. [2022-11-03 02:25:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:25:12,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 145 [2022-11-03 02:25:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:12,763 INFO L225 Difference]: With dead ends: 11273 [2022-11-03 02:25:12,763 INFO L226 Difference]: Without dead ends: 7253 [2022-11-03 02:25:12,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:12,769 INFO L413 NwaCegarLoop]: 3214 mSDtfsCounter, 232 mSDsluCounter, 10029 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 12569 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:12,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 12569 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:25:12,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2022-11-03 02:25:13,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 6800. [2022-11-03 02:25:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 5874 states have (on average 1.3859380320054477) internal successors, (8141), 5894 states have internal predecessors, (8141), 474 states have call successors, (474), 441 states have call predecessors, (474), 450 states have return successors, (522), 464 states have call predecessors, (522), 472 states have call successors, (522) [2022-11-03 02:25:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 9137 transitions. [2022-11-03 02:25:13,482 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 9137 transitions. Word has length 145 [2022-11-03 02:25:13,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:13,482 INFO L495 AbstractCegarLoop]: Abstraction has 6800 states and 9137 transitions. [2022-11-03 02:25:13,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 02:25:13,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 9137 transitions. [2022-11-03 02:25:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 02:25:13,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:13,486 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:13,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:13,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-03 02:25:13,686 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1458844482, now seen corresponding path program 1 times [2022-11-03 02:25:13,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:13,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518370856] [2022-11-03 02:25:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:13,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-11-03 02:25:13,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:13,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518370856] [2022-11-03 02:25:13,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518370856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:13,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:13,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:13,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793736119] [2022-11-03 02:25:13,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:14,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:14,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:14,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:14,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:14,001 INFO L87 Difference]: Start difference. First operand 6800 states and 9137 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 02:25:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:17,231 INFO L93 Difference]: Finished difference Result 19033 states and 23159 transitions. [2022-11-03 02:25:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 174 [2022-11-03 02:25:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:17,257 INFO L225 Difference]: With dead ends: 19033 [2022-11-03 02:25:17,257 INFO L226 Difference]: Without dead ends: 16437 [2022-11-03 02:25:17,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:17,264 INFO L413 NwaCegarLoop]: 3413 mSDtfsCounter, 3643 mSDsluCounter, 10759 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3643 SdHoareTripleChecker+Valid, 13362 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:17,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3643 Valid, 13362 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:25:17,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16437 states. [2022-11-03 02:25:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16437 to 10769. [2022-11-03 02:25:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10769 states, 9079 states have (on average 1.301354774754929) internal successors, (11815), 9109 states have internal predecessors, (11815), 875 states have call successors, (875), 795 states have call predecessors, (875), 813 states have return successors, (975), 864 states have call predecessors, (975), 873 states have call successors, (975) [2022-11-03 02:25:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10769 states to 10769 states and 13665 transitions. [2022-11-03 02:25:18,740 INFO L78 Accepts]: Start accepts. Automaton has 10769 states and 13665 transitions. Word has length 174 [2022-11-03 02:25:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:18,741 INFO L495 AbstractCegarLoop]: Abstraction has 10769 states and 13665 transitions. [2022-11-03 02:25:18,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 02:25:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 10769 states and 13665 transitions. [2022-11-03 02:25:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-03 02:25:18,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:18,749 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:18,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 02:25:18,749 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:18,750 INFO L85 PathProgramCache]: Analyzing trace with hash -856025454, now seen corresponding path program 1 times [2022-11-03 02:25:18,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:18,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615701700] [2022-11-03 02:25:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:18,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:25:18,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:25:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:25:18,934 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:25:18,936 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:25:18,937 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-03 02:25:18,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-03 02:25:18,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 02:25:18,943 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:18,948 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:25:19,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:25:19 BoogieIcfgContainer [2022-11-03 02:25:19,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:25:19,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:25:19,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:25:19,151 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:25:19,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:45" (3/4) ... [2022-11-03 02:25:19,153 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 02:25:19,358 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:25:19,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:25:19,360 INFO L158 Benchmark]: Toolchain (without parser) took 291687.54ms. Allocated memory was 113.2MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 77.0MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-11-03 02:25:19,360 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:19,361 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4367.78ms. Allocated memory was 113.2MB in the beginning and 287.3MB in the end (delta: 174.1MB). Free memory was 76.6MB in the beginning and 195.4MB in the end (delta: -118.8MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. [2022-11-03 02:25:19,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 467.24ms. Allocated memory is still 287.3MB. Free memory was 195.4MB in the beginning and 119.9MB in the end (delta: 75.5MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2022-11-03 02:25:19,369 INFO L158 Benchmark]: Boogie Preprocessor took 650.33ms. Allocated memory is still 287.3MB. Free memory was 119.9MB in the beginning and 117.8MB in the end (delta: 2.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-11-03 02:25:19,370 INFO L158 Benchmark]: RCFGBuilder took 11913.44ms. Allocated memory was 287.3MB in the beginning and 857.7MB in the end (delta: 570.4MB). Free memory was 117.8MB in the beginning and 282.2MB in the end (delta: -164.4MB). Peak memory consumption was 493.9MB. Max. memory is 16.1GB. [2022-11-03 02:25:19,370 INFO L158 Benchmark]: TraceAbstraction took 274070.99ms. Allocated memory was 857.7MB in the beginning and 3.1GB in the end (delta: 2.2GB). Free memory was 281.1MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 701.9MB. Max. memory is 16.1GB. [2022-11-03 02:25:19,370 INFO L158 Benchmark]: Witness Printer took 208.65ms. Allocated memory is still 3.1GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-03 02:25:19,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4367.78ms. Allocated memory was 113.2MB in the beginning and 287.3MB in the end (delta: 174.1MB). Free memory was 76.6MB in the beginning and 195.4MB in the end (delta: -118.8MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 467.24ms. Allocated memory is still 287.3MB. Free memory was 195.4MB in the beginning and 119.9MB in the end (delta: 75.5MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 650.33ms. Allocated memory is still 287.3MB. Free memory was 119.9MB in the beginning and 117.8MB in the end (delta: 2.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * RCFGBuilder took 11913.44ms. Allocated memory was 287.3MB in the beginning and 857.7MB in the end (delta: 570.4MB). Free memory was 117.8MB in the beginning and 282.2MB in the end (delta: -164.4MB). Peak memory consumption was 493.9MB. Max. memory is 16.1GB. * TraceAbstraction took 274070.99ms. Allocated memory was 857.7MB in the beginning and 3.1GB in the end (delta: 2.2GB). Free memory was 281.1MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 701.9MB. Max. memory is 16.1GB. * Witness Printer took 208.65ms. Allocated memory is still 3.1GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int t2_pc = 0; [L11180] int t3_pc = 0; [L11181] int m_st ; [L11182] int t1_st ; [L11183] int t2_st ; [L11184] int t3_st ; [L11185] int m_i ; [L11186] int t1_i ; [L11187] int t2_i ; [L11188] int t3_i ; [L11189] int M_E = 2; [L11190] int T1_E = 2; [L11191] int T2_E = 2; [L11192] int T3_E = 2; [L11193] int E_M = 2; [L11194] int E_1 = 2; [L11195] int E_2 = 2; [L11196] int E_3 = 2; [L11202] int token ; [L11204] int local ; [L11901] COND FALSE !(__VERIFIER_nondet_int()) [L11904] CALL main2() [L11888] int __retres1 ; [L11892] CALL init_model() [L11801] m_i = 1 [L11802] t1_i = 1 [L11803] t2_i = 1 [L11804] t3_i = 1 [L11892] RET init_model() [L11893] CALL start_simulation() [L11829] int kernel_st ; [L11830] int tmp ; [L11831] int tmp___0 ; [L11835] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11836] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11837] CALL init_threads() [L11457] COND TRUE m_i == 1 [L11458] m_st = 0 [L11462] COND TRUE t1_i == 1 [L11463] t1_st = 0 [L11467] COND TRUE t2_i == 1 [L11468] t2_st = 0 [L11472] COND TRUE t3_i == 1 [L11473] t3_st = 0 [L11837] RET init_threads() [L11838] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11594] COND FALSE !(M_E == 0) [L11599] COND FALSE !(T1_E == 0) [L11604] COND FALSE !(T2_E == 0) [L11609] COND FALSE !(T3_E == 0) [L11614] COND FALSE !(E_M == 0) [L11619] COND FALSE !(E_1 == 0) [L11624] COND FALSE !(E_2 == 0) [L11629] COND FALSE !(E_3 == 0) [L11838] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11839] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11373] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11383] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11392] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11402] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11411] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11421] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11430] COND FALSE !(t3_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11440] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11839] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11840] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11642] COND FALSE !(M_E == 1) [L11647] COND FALSE !(T1_E == 1) [L11652] COND FALSE !(T2_E == 1) [L11657] COND FALSE !(T3_E == 1) [L11662] COND FALSE !(E_M == 1) [L11667] COND FALSE !(E_1 == 1) [L11672] COND FALSE !(E_2 == 1) [L11677] COND FALSE !(E_3 == 1) [L11840] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11843] COND TRUE 1 [L11846] kernel_st = 1 [L11847] CALL eval() [L11513] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, tmp=1, token=0] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11541] COND TRUE t1_st == 0 [L11542] int tmp_ndt_2; [L11543] tmp_ndt_2 = __VERIFIER_nondet_int() [L11544] COND TRUE \read(tmp_ndt_2) [L11546] t1_st = 1 [L11547] CALL transmit1() [L11265] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11276] COND TRUE 1 [L11278] t1_pc = 1 [L11279] t1_st = 2 [L11547] RET transmit1() [L11555] COND TRUE t2_st == 0 [L11556] int tmp_ndt_3; [L11557] tmp_ndt_3 = __VERIFIER_nondet_int() [L11558] COND TRUE \read(tmp_ndt_3) [L11560] t2_st = 1 [L11561] CALL transmit2() [L11301] COND TRUE t2_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11312] COND TRUE 1 [L11314] t2_pc = 1 [L11315] t2_st = 2 [L11561] RET transmit2() [L11569] COND TRUE t3_st == 0 [L11570] int tmp_ndt_4; [L11571] tmp_ndt_4 = __VERIFIER_nondet_int() [L11572] COND TRUE \read(tmp_ndt_4) [L11574] t3_st = 1 [L11575] CALL transmit3() [L11337] COND TRUE t3_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=0, t3_st=1, token=0] [L11348] COND TRUE 1 [L11350] t3_pc = 1 [L11351] t3_st = 2 [L11575] RET transmit3() [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND TRUE \read(tmp_ndt_1) [L11532] m_st = 1 [L11533] CALL master() [L11207] int tmp_var = __VERIFIER_nondet_int(); [L11209] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11220] COND TRUE 1 [L11223] token = __VERIFIER_nondet_int() [L11224] local = token [L11225] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11226] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11734] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11373] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11383] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11393] COND TRUE E_1 == 1 [L11394] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND TRUE \read(tmp___0) [L11705] t1_st = 0 [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11421] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11440] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11226] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11227] E_1 = 2 [L11228] m_pc = 1 [L11229] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11533] RET master() [L11541] COND TRUE t1_st == 0 [L11542] int tmp_ndt_2; [L11543] tmp_ndt_2 = __VERIFIER_nondet_int() [L11544] COND TRUE \read(tmp_ndt_2) [L11546] t1_st = 1 [L11547] CALL transmit1() [L11265] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11268] COND TRUE t1_pc == 1 [L11284] token += 1 [L11285] E_2 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11286] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11374] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11383] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11412] COND TRUE E_2 == 1 [L11413] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND TRUE \read(tmp___1) [L11713] t2_st = 0 [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11440] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11286] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11287] E_2 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11276] COND TRUE 1 [L11278] t1_pc = 1 [L11279] t1_st = 2 [L11547] RET transmit1() [L11555] COND TRUE t2_st == 0 [L11556] int tmp_ndt_3; [L11557] tmp_ndt_3 = __VERIFIER_nondet_int() [L11558] COND TRUE \read(tmp_ndt_3) [L11560] t2_st = 1 [L11561] CALL transmit2() [L11301] COND FALSE !(t2_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11304] COND TRUE t2_pc == 1 [L11320] token += 1 [L11321] E_3 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11322] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11374] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11383] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11421] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11431] COND TRUE E_3 == 1 [L11432] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND TRUE \read(tmp___2) [L11721] t3_st = 0 [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11322] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11323] E_3 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11312] COND TRUE 1 [L11314] t2_pc = 1 [L11315] t2_st = 2 [L11561] RET transmit2() [L11569] COND TRUE t3_st == 0 [L11570] int tmp_ndt_4; [L11571] tmp_ndt_4 = __VERIFIER_nondet_int() [L11572] COND TRUE \read(tmp_ndt_4) [L11574] t3_st = 1 [L11575] CALL transmit3() [L11337] COND FALSE !(t3_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=2] [L11340] COND TRUE t3_pc == 1 [L11356] token += 1 [L11357] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11358] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11374] COND TRUE E_M == 1 [L11375] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND TRUE \read(tmp) [L11697] m_st = 0 [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11421] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11440] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11358] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11359] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11348] COND TRUE 1 [L11350] t3_pc = 1 [L11351] t3_st = 2 [L11575] RET transmit3() [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND TRUE \read(tmp_ndt_1) [L11532] m_st = 1 [L11533] CALL master() [L11207] int tmp_var = __VERIFIER_nondet_int(); [L11209] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11212] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11234] COND FALSE !(token != local + 3) [L11239] COND TRUE tmp_var <= 5 [L11240] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11245] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11246] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11247] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11248] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] - UnprovableResult [Line: 11049]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1738 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 273.8s, OverallIterations: 30, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 54.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107543 SdHoareTripleChecker+Valid, 25.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107448 mSDsluCounter, 308226 SdHoareTripleChecker+Invalid, 21.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 230852 mSDsCounter, 3851 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33017 IncrementalHoareTripleChecker+Invalid, 36868 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3851 mSolverCounterUnsat, 93721 mSDtfsCounter, 33017 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4404 GetRequests, 3566 SyntacticMatches, 60 SemanticMatches, 778 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50189 ImplicationChecksByTransitivity, 132.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13066occurred in iteration=20, InterpolantAutomatonStates: 497, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.4s AutomataMinimizationTime, 29 MinimizatonAttempts, 23246 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 6078 NumberOfCodeBlocks, 6078 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 6344 ConstructedInterpolants, 0 QuantifiedInterpolants, 11583 SizeOfPredicates, 38 NumberOfNonLiveVariables, 13600 ConjunctsInSsa, 191 ConjunctsInUnsatCore, 56 InterpolantComputations, 25 PerfectInterpolantSequences, 3705/4211 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! [2022-11-03 02:25:19,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f561f22a-8dd5-42dc-be77-21f00c42f5ca/bin/utaipan-7li7fVZpFI/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