./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/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_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/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_140ef971-6914-475c-be2f-095e7c28e3c2/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 954b1f05390ccaafb1cee97c6b5216f4167723fe344c33082a0f73951b4d6f58 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:50:53,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:50:53,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:50:54,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:50:54,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:50:54,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:50:54,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:50:54,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:50:54,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:50:54,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:50:54,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:50:54,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:50:54,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:50:54,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:50:54,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:50:54,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:50:54,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:50:54,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:50:54,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:50:54,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:50:54,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:50:54,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:50:54,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:50:54,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:50:54,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:50:54,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:50:54,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:50:54,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:50:54,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:50:54,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:50:54,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:50:54,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:50:54,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:50:54,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:50:54,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:50:54,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:50:54,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:50:54,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:50:54,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:50:54,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:50:54,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:50:54,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:50:54,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:50:54,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:50:54,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:50:54,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:50:54,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:50:54,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:50:54,127 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:50:54,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:50:54,127 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:50:54,127 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:50:54,128 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:50:54,129 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:50:54,129 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:50:54,129 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:50:54,129 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:50:54,130 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:50:54,130 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:50:54,130 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:50:54,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:50:54,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:50:54,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:50:54,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:50:54,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:50:54,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:50:54,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:50:54,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:50:54,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:50:54,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:50:54,135 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:50:54,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:50:54,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:50:54,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:50:54,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:50:54,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:50:54,136 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:50:54,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:50:54,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:50:54,137 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:50:54,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:50:54,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:50:54,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:50:54,138 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_140ef971-6914-475c-be2f-095e7c28e3c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 954b1f05390ccaafb1cee97c6b5216f4167723fe344c33082a0f73951b4d6f58 [2022-11-03 03:50:54,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:50:54,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:50:54,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:50:54,514 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:50:54,515 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:50:54,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c [2022-11-03 03:50:54,592 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/data/9ce41ac73/362c340e6f1d4f259e7acbefa02d1ece/FLAG6cc692f2f [2022-11-03 03:50:55,724 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:50:55,724 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c [2022-11-03 03:50:55,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/data/9ce41ac73/362c340e6f1d4f259e7acbefa02d1ece/FLAG6cc692f2f [2022-11-03 03:50:55,984 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/data/9ce41ac73/362c340e6f1d4f259e7acbefa02d1ece [2022-11-03 03:50:55,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:50:55,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:50:55,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:50:55,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:50:55,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:50:55,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:55" (1/1) ... [2022-11-03 03:50:55,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7381b014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:55, skipping insertion in model container [2022-11-03 03:50:55,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:55" (1/1) ... [2022-11-03 03:50:56,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:50:56,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:50:58,843 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_140ef971-6914-475c-be2f-095e7c28e3c2/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[378560,378573] [2022-11-03 03:50:58,874 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_140ef971-6914-475c-be2f-095e7c28e3c2/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[383339,383352] [2022-11-03 03:50:59,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:50:59,049 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:51:00,257 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_140ef971-6914-475c-be2f-095e7c28e3c2/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[378560,378573] [2022-11-03 03:51:00,265 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_140ef971-6914-475c-be2f-095e7c28e3c2/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[383339,383352] [2022-11-03 03:51:00,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:51:00,353 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:51:00,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00 WrapperNode [2022-11-03 03:51:00,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:51:00,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:51:00,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:51:00,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:51:00,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:00,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:00,835 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12624 [2022-11-03 03:51:00,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:51:00,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:51:00,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:51:00,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:51:00,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:00,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:00,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:00,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:01,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:01,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:01,289 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:01,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:01,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:51:01,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:51:01,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:51:01,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:51:01,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (1/1) ... [2022-11-03 03:51:01,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:51:01,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:01,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:51:01,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:51:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:51:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-03 03:51:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-03 03:51:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-03 03:51:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-03 03:51:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-03 03:51:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-03 03:51:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 03:51:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 03:51:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-03 03:51:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-03 03:51:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-03 03:51:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-03 03:51:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:51:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-03 03:51:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-03 03:51:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:51:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:51:01,686 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:51:01,688 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:51:10,556 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:51:13,132 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:51:13,132 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-03 03:51:13,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:13 BoogieIcfgContainer [2022-11-03 03:51:13,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:51:13,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:51:13,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:51:13,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:51:13,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:50:55" (1/3) ... [2022-11-03 03:51:13,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c15a1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:13, skipping insertion in model container [2022-11-03 03:51:13,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:00" (2/3) ... [2022-11-03 03:51:13,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c15a1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:13, skipping insertion in model container [2022-11-03 03:51:13,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:13" (3/3) ... [2022-11-03 03:51:13,149 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.02.cil-2.c [2022-11-03 03:51:13,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:51:13,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 03:51:13,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:51:13,265 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;@5b022b82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:51:13,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 03:51:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 1727 states, 1699 states have (on average 1.9770453207769276) internal successors, (3359), 1704 states have internal predecessors, (3359), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 03:51:13,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 03:51:13,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:13,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:13,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:13,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2069298848, now seen corresponding path program 1 times [2022-11-03 03:51:13,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:13,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574522469] [2022-11-03 03:51:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:13,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:13,746 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 03:51:13,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:13,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574522469] [2022-11-03 03:51:13,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574522469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:13,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:13,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:13,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233107009] [2022-11-03 03:51:13,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:13,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:13,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:13,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:13,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:13,800 INFO L87 Difference]: Start difference. First operand has 1727 states, 1699 states have (on average 1.9770453207769276) internal successors, (3359), 1704 states have internal predecessors, (3359), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:51:14,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:14,819 INFO L93 Difference]: Finished difference Result 3514 states and 6887 transitions. [2022-11-03 03:51:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:14,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2022-11-03 03:51:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:14,852 INFO L225 Difference]: With dead ends: 3514 [2022-11-03 03:51:14,853 INFO L226 Difference]: Without dead ends: 1786 [2022-11-03 03:51:14,864 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 03:51:14,867 INFO L413 NwaCegarLoop]: 3218 mSDtfsCounter, 3457 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3457 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:14,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3457 Valid, 6376 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:51:14,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-11-03 03:51:14,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1785. [2022-11-03 03:51:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1741 states have (on average 1.9563469270534175) internal successors, (3406), 1745 states have internal predecessors, (3406), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-03 03:51:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 3464 transitions. [2022-11-03 03:51:14,989 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 3464 transitions. Word has length 38 [2022-11-03 03:51:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:14,989 INFO L495 AbstractCegarLoop]: Abstraction has 1785 states and 3464 transitions. [2022-11-03 03:51:14,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:51:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 3464 transitions. [2022-11-03 03:51:14,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:51:14,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:14,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:14,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:51:14,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:14,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:14,995 INFO L85 PathProgramCache]: Analyzing trace with hash -663308944, now seen corresponding path program 1 times [2022-11-03 03:51:14,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:14,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498278469] [2022-11-03 03:51:14,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:14,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:51:15,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:15,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498278469] [2022-11-03 03:51:15,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498278469] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:15,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878256527] [2022-11-03 03:51:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:15,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:15,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:15,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:15,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:51:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:15,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:51:15,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:51:15,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:15,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878256527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:15,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:15,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:51:15,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439460390] [2022-11-03 03:51:15,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:15,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:15,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:15,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:15,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:15,483 INFO L87 Difference]: Start difference. First operand 1785 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:51:15,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:15,960 INFO L93 Difference]: Finished difference Result 2056 states and 3839 transitions. [2022-11-03 03:51:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:15,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-11-03 03:51:15,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:15,985 INFO L225 Difference]: With dead ends: 2056 [2022-11-03 03:51:15,985 INFO L226 Difference]: Without dead ends: 1917 [2022-11-03 03:51:15,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:15,988 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 3356 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:15,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3356 Valid, 3269 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:51:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2022-11-03 03:51:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1911. [2022-11-03 03:51:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1833 states have (on average 1.9252591380250954) internal successors, (3529), 1838 states have internal predecessors, (3529), 52 states have call successors, (52), 25 states have call predecessors, (52), 24 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 03:51:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 3631 transitions. [2022-11-03 03:51:16,061 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 3631 transitions. Word has length 67 [2022-11-03 03:51:16,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:16,061 INFO L495 AbstractCegarLoop]: Abstraction has 1911 states and 3631 transitions. [2022-11-03 03:51:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:51:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 3631 transitions. [2022-11-03 03:51:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:51:16,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:16,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:16,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:16,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:16,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1613665072, now seen corresponding path program 1 times [2022-11-03 03:51:16,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:16,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866457021] [2022-11-03 03:51:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:16,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 03:51:16,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:16,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866457021] [2022-11-03 03:51:16,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866457021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:16,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:16,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:51:16,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503769600] [2022-11-03 03:51:16,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:16,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:51:16,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:16,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:51:16,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:16,724 INFO L87 Difference]: Start difference. First operand 1911 states and 3631 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 03:51:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:17,658 INFO L93 Difference]: Finished difference Result 2467 states and 4380 transitions. [2022-11-03 03:51:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:51:17,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 67 [2022-11-03 03:51:17,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:17,670 INFO L225 Difference]: With dead ends: 2467 [2022-11-03 03:51:17,671 INFO L226 Difference]: Without dead ends: 2203 [2022-11-03 03:51:17,673 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 03:51:17,674 INFO L413 NwaCegarLoop]: 3165 mSDtfsCounter, 3530 mSDsluCounter, 6702 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 9419 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:17,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3541 Valid, 9419 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:51:17,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2022-11-03 03:51:17,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2147. [2022-11-03 03:51:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2003 states have (on average 1.872690963554668) internal successors, (3751), 2010 states have internal predecessors, (3751), 94 states have call successors, (94), 49 states have call predecessors, (94), 48 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-03 03:51:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3937 transitions. [2022-11-03 03:51:17,757 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3937 transitions. Word has length 67 [2022-11-03 03:51:17,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:17,757 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3937 transitions. [2022-11-03 03:51:17,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 03:51:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3937 transitions. [2022-11-03 03:51:17,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 03:51:17,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:17,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:17,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:51:17,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:17,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:17,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1513893631, now seen corresponding path program 1 times [2022-11-03 03:51:17,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:17,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958887324] [2022-11-03 03:51:17,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:17,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 03:51:17,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:17,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958887324] [2022-11-03 03:51:17,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958887324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:17,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:17,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987586035] [2022-11-03 03:51:17,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:17,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:17,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:17,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:17,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:17,871 INFO L87 Difference]: Start difference. First operand 2147 states and 3937 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:51:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:18,403 INFO L93 Difference]: Finished difference Result 2536 states and 4460 transitions. [2022-11-03 03:51:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-03 03:51:18,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:18,419 INFO L225 Difference]: With dead ends: 2536 [2022-11-03 03:51:18,420 INFO L226 Difference]: Without dead ends: 2268 [2022-11-03 03:51:18,422 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 03:51:18,427 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 36 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:18,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 6336 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:51:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2022-11-03 03:51:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2205. [2022-11-03 03:51:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 2053 states have (on average 1.864101315148563) internal successors, (3827), 2060 states have internal predecessors, (3827), 98 states have call successors, (98), 53 states have call predecessors, (98), 52 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-03 03:51:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 4021 transitions. [2022-11-03 03:51:18,530 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 4021 transitions. Word has length 68 [2022-11-03 03:51:18,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:18,531 INFO L495 AbstractCegarLoop]: Abstraction has 2205 states and 4021 transitions. [2022-11-03 03:51:18,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:51:18,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 4021 transitions. [2022-11-03 03:51:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 03:51:18,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:18,537 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:18,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:51:18,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:18,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:18,540 INFO L85 PathProgramCache]: Analyzing trace with hash 934667471, now seen corresponding path program 1 times [2022-11-03 03:51:18,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:18,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912057997] [2022-11-03 03:51:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:18,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:51:18,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:18,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912057997] [2022-11-03 03:51:18,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912057997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:18,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:18,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529414190] [2022-11-03 03:51:18,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:18,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:18,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:18,601 INFO L87 Difference]: Start difference. First operand 2205 states and 4021 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:51:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:19,072 INFO L93 Difference]: Finished difference Result 3043 states and 5150 transitions. [2022-11-03 03:51:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:19,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2022-11-03 03:51:19,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:19,086 INFO L225 Difference]: With dead ends: 3043 [2022-11-03 03:51:19,086 INFO L226 Difference]: Without dead ends: 2484 [2022-11-03 03:51:19,091 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 03:51:19,094 INFO L413 NwaCegarLoop]: 3188 mSDtfsCounter, 3349 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:19,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3349 Valid, 3270 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:51:19,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2022-11-03 03:51:19,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2022-11-03 03:51:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2252 states have (on average 1.813943161634103) internal successors, (4085), 2261 states have internal predecessors, (4085), 142 states have call successors, (142), 79 states have call predecessors, (142), 78 states have return successors, (140), 134 states have call predecessors, (140), 140 states have call successors, (140) [2022-11-03 03:51:19,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4367 transitions. [2022-11-03 03:51:19,200 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4367 transitions. Word has length 87 [2022-11-03 03:51:19,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:19,201 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 4367 transitions. [2022-11-03 03:51:19,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:51:19,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4367 transitions. [2022-11-03 03:51:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 03:51:19,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:19,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:19,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:51:19,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1788899467, now seen corresponding path program 1 times [2022-11-03 03:51:19,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:19,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120838648] [2022-11-03 03:51:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 03:51:19,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:19,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120838648] [2022-11-03 03:51:19,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120838648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:19,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646409630] [2022-11-03 03:51:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:19,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:19,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:19,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:19,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:51:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:19,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:51:19,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:51:19,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:19,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646409630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:19,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:19,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-03 03:51:19,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744292305] [2022-11-03 03:51:19,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:19,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:19,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:19,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:19,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:19,492 INFO L87 Difference]: Start difference. First operand 2474 states and 4367 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:51:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:20,030 INFO L93 Difference]: Finished difference Result 3213 states and 5363 transitions. [2022-11-03 03:51:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:20,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-11-03 03:51:20,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:20,043 INFO L225 Difference]: With dead ends: 3213 [2022-11-03 03:51:20,044 INFO L226 Difference]: Without dead ends: 2655 [2022-11-03 03:51:20,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:20,048 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 52 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6338 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:20,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 6338 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:51:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2022-11-03 03:51:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2553. [2022-11-03 03:51:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2319 states have (on average 1.8055196205260888) internal successors, (4187), 2328 states have internal predecessors, (4187), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-03 03:51:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4481 transitions. [2022-11-03 03:51:20,161 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4481 transitions. Word has length 99 [2022-11-03 03:51:20,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:20,162 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 4481 transitions. [2022-11-03 03:51:20,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:51:20,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4481 transitions. [2022-11-03 03:51:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 03:51:20,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:20,172 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:20,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:20,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 03:51:20,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:20,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1679988491, now seen corresponding path program 2 times [2022-11-03 03:51:20,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:20,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025695549] [2022-11-03 03:51:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 03:51:20,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:20,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025695549] [2022-11-03 03:51:20,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025695549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:20,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072451698] [2022-11-03 03:51:20,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:51:20,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:20,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:20,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:20,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:51:20,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 03:51:20,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:51:20,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:51:20,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 03:51:20,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:20,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072451698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:20,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:20,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 03:51:20,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027509961] [2022-11-03 03:51:20,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:20,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:20,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:20,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:20,850 INFO L87 Difference]: Start difference. First operand 2553 states and 4481 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:51:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:21,375 INFO L93 Difference]: Finished difference Result 3198 states and 5385 transitions. [2022-11-03 03:51:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:21,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-03 03:51:21,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:21,386 INFO L225 Difference]: With dead ends: 3198 [2022-11-03 03:51:21,387 INFO L226 Difference]: Without dead ends: 2561 [2022-11-03 03:51:21,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:21,390 INFO L413 NwaCegarLoop]: 3194 mSDtfsCounter, 92 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:21,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6333 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:51:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2022-11-03 03:51:21,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2549. [2022-11-03 03:51:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2315 states have (on average 1.7982721382289417) internal successors, (4163), 2324 states have internal predecessors, (4163), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-03 03:51:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 4457 transitions. [2022-11-03 03:51:21,487 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 4457 transitions. Word has length 99 [2022-11-03 03:51:21,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:21,488 INFO L495 AbstractCegarLoop]: Abstraction has 2549 states and 4457 transitions. [2022-11-03 03:51:21,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:51:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 4457 transitions. [2022-11-03 03:51:21,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 03:51:21,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:21,492 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:21,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:21,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 03:51:21,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:21,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1685620309, now seen corresponding path program 1 times [2022-11-03 03:51:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:21,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668630655] [2022-11-03 03:51:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:21,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 03:51:22,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:22,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668630655] [2022-11-03 03:51:22,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668630655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:22,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463328231] [2022-11-03 03:51:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:22,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:22,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:22,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:22,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:51:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:22,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:51:22,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-03 03:51:22,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:22,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463328231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:22,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:22,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 03:51:22,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695923702] [2022-11-03 03:51:22,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:22,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:22,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:22,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:22,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:22,213 INFO L87 Difference]: Start difference. First operand 2549 states and 4457 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:51:22,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:22,650 INFO L93 Difference]: Finished difference Result 3331 states and 5474 transitions. [2022-11-03 03:51:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:22,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-03 03:51:22,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:22,661 INFO L225 Difference]: With dead ends: 3331 [2022-11-03 03:51:22,661 INFO L226 Difference]: Without dead ends: 2725 [2022-11-03 03:51:22,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:22,664 INFO L413 NwaCegarLoop]: 3156 mSDtfsCounter, 3359 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:22,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 3175 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:51:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2022-11-03 03:51:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2725. [2022-11-03 03:51:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2463 states have (on average 1.7576126674786845) internal successors, (4329), 2472 states have internal predecessors, (4329), 156 states have call successors, (156), 105 states have call predecessors, (156), 104 states have return successors, (154), 148 states have call predecessors, (154), 154 states have call successors, (154) [2022-11-03 03:51:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 4639 transitions. [2022-11-03 03:51:22,789 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 4639 transitions. Word has length 99 [2022-11-03 03:51:22,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:22,791 INFO L495 AbstractCegarLoop]: Abstraction has 2725 states and 4639 transitions. [2022-11-03 03:51:22,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:51:22,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 4639 transitions. [2022-11-03 03:51:22,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 03:51:22,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:22,795 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:22,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:23,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 03:51:23,011 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:23,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:23,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1848697004, now seen corresponding path program 1 times [2022-11-03 03:51:23,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:23,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087606911] [2022-11-03 03:51:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:23,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:23,210 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 03:51:23,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:23,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087606911] [2022-11-03 03:51:23,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087606911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:23,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231113873] [2022-11-03 03:51:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:23,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:23,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:23,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:23,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:51:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:23,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:51:23,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:51:23,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:23,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231113873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:23,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:23,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 03:51:23,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62871728] [2022-11-03 03:51:23,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:23,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:23,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:23,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:23,365 INFO L87 Difference]: Start difference. First operand 2725 states and 4639 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:51:23,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:23,921 INFO L93 Difference]: Finished difference Result 4207 states and 6540 transitions. [2022-11-03 03:51:23,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:23,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-11-03 03:51:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:23,946 INFO L225 Difference]: With dead ends: 4207 [2022-11-03 03:51:23,946 INFO L226 Difference]: Without dead ends: 3129 [2022-11-03 03:51:23,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:23,952 INFO L413 NwaCegarLoop]: 3167 mSDtfsCounter, 48 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 6301 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:23,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 6301 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:51:23,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-11-03 03:51:24,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2841. [2022-11-03 03:51:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2559 states have (on average 1.7456037514654161) internal successors, (4467), 2569 states have internal predecessors, (4467), 166 states have call successors, (166), 115 states have call predecessors, (166), 114 states have return successors, (164), 157 states have call predecessors, (164), 164 states have call successors, (164) [2022-11-03 03:51:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4797 transitions. [2022-11-03 03:51:24,084 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4797 transitions. Word has length 100 [2022-11-03 03:51:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:24,084 INFO L495 AbstractCegarLoop]: Abstraction has 2841 states and 4797 transitions. [2022-11-03 03:51:24,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:51:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4797 transitions. [2022-11-03 03:51:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 03:51:24,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:24,090 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:24,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:24,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:24,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1329117843, now seen corresponding path program 1 times [2022-11-03 03:51:24,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:24,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655089676] [2022-11-03 03:51:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:24,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 03:51:24,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:24,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655089676] [2022-11-03 03:51:24,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655089676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:24,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211425543] [2022-11-03 03:51:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:24,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:24,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:24,394 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:24,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:51:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:24,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:51:24,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:51:24,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:24,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211425543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:24,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:24,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-03 03:51:24,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487024929] [2022-11-03 03:51:24,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:24,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:24,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:24,551 INFO L87 Difference]: Start difference. First operand 2841 states and 4797 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:51:25,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:25,119 INFO L93 Difference]: Finished difference Result 3881 states and 6149 transitions. [2022-11-03 03:51:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:25,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2022-11-03 03:51:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:25,141 INFO L225 Difference]: With dead ends: 3881 [2022-11-03 03:51:25,141 INFO L226 Difference]: Without dead ends: 3260 [2022-11-03 03:51:25,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:25,145 INFO L413 NwaCegarLoop]: 3206 mSDtfsCounter, 56 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6356 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:25,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6356 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:51:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-11-03 03:51:25,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3009. [2022-11-03 03:51:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 2695 states have (on average 1.72430426716141) internal successors, (4647), 2705 states have internal predecessors, (4647), 182 states have call successors, (182), 131 states have call predecessors, (182), 130 states have return successors, (180), 173 states have call predecessors, (180), 180 states have call successors, (180) [2022-11-03 03:51:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 5009 transitions. [2022-11-03 03:51:25,457 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 5009 transitions. Word has length 101 [2022-11-03 03:51:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:25,458 INFO L495 AbstractCegarLoop]: Abstraction has 3009 states and 5009 transitions. [2022-11-03 03:51:25,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:51:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 5009 transitions. [2022-11-03 03:51:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 03:51:25,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:25,463 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:25,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:25,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:25,679 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:25,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:25,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1548947729, now seen corresponding path program 1 times [2022-11-03 03:51:25,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:25,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369807733] [2022-11-03 03:51:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:25,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:51:25,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:25,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369807733] [2022-11-03 03:51:25,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369807733] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371305634] [2022-11-03 03:51:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:25,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:25,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:25,855 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:25,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:51:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:25,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:51:25,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:51:26,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:26,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371305634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:26,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:26,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2022-11-03 03:51:26,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417253817] [2022-11-03 03:51:26,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:26,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:51:26,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:26,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:51:26,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:26,096 INFO L87 Difference]: Start difference. First operand 3009 states and 5009 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:51:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:27,021 INFO L93 Difference]: Finished difference Result 4904 states and 7404 transitions. [2022-11-03 03:51:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:51:27,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 101 [2022-11-03 03:51:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:27,033 INFO L225 Difference]: With dead ends: 4904 [2022-11-03 03:51:27,033 INFO L226 Difference]: Without dead ends: 3542 [2022-11-03 03:51:27,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:51:27,038 INFO L413 NwaCegarLoop]: 3166 mSDtfsCounter, 3498 mSDsluCounter, 6724 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3509 SdHoareTripleChecker+Valid, 9432 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:27,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3509 Valid, 9432 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:51:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2022-11-03 03:51:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3538. [2022-11-03 03:51:27,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3096 states have (on average 1.6563307493540051) internal successors, (5128), 3109 states have internal predecessors, (5128), 256 states have call successors, (256), 185 states have call predecessors, (256), 184 states have return successors, (254), 244 states have call predecessors, (254), 254 states have call successors, (254) [2022-11-03 03:51:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5638 transitions. [2022-11-03 03:51:27,250 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5638 transitions. Word has length 101 [2022-11-03 03:51:27,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:27,250 INFO L495 AbstractCegarLoop]: Abstraction has 3538 states and 5638 transitions. [2022-11-03 03:51:27,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:51:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5638 transitions. [2022-11-03 03:51:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:51:27,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:27,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:27,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:27,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 03:51:27,474 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:27,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1348845533, now seen corresponding path program 1 times [2022-11-03 03:51:27,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:27,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15196433] [2022-11-03 03:51:27,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:27,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 03:51:27,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:27,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15196433] [2022-11-03 03:51:27,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15196433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:27,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306361208] [2022-11-03 03:51:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:27,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:27,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:27,971 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:27,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:51:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:28,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:51:28,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:51:28,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:28,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306361208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:28,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:28,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-03 03:51:28,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329811555] [2022-11-03 03:51:28,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:28,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:51:28,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:28,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:51:28,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:51:28,283 INFO L87 Difference]: Start difference. First operand 3538 states and 5638 transitions. Second operand has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:51:29,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:29,346 INFO L93 Difference]: Finished difference Result 4977 states and 7487 transitions. [2022-11-03 03:51:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:51:29,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-11-03 03:51:29,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:29,358 INFO L225 Difference]: With dead ends: 4977 [2022-11-03 03:51:29,359 INFO L226 Difference]: Without dead ends: 3659 [2022-11-03 03:51:29,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:51:29,364 INFO L413 NwaCegarLoop]: 3134 mSDtfsCounter, 3386 mSDsluCounter, 9952 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 12420 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:29,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 12420 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:51:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2022-11-03 03:51:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3623. [2022-11-03 03:51:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 3171 states have (on average 1.6367076631977293) internal successors, (5190), 3184 states have internal predecessors, (5190), 258 states have call successors, (258), 193 states have call predecessors, (258), 192 states have return successors, (256), 246 states have call predecessors, (256), 256 states have call successors, (256) [2022-11-03 03:51:29,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5704 transitions. [2022-11-03 03:51:29,786 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5704 transitions. Word has length 102 [2022-11-03 03:51:29,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:29,787 INFO L495 AbstractCegarLoop]: Abstraction has 3623 states and 5704 transitions. [2022-11-03 03:51:29,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:51:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5704 transitions. [2022-11-03 03:51:29,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:51:29,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:29,795 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:29,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:30,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 03:51:30,011 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:30,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:30,011 INFO L85 PathProgramCache]: Analyzing trace with hash -899746115, now seen corresponding path program 1 times [2022-11-03 03:51:30,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:30,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904027032] [2022-11-03 03:51:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 03:51:30,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:30,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904027032] [2022-11-03 03:51:30,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904027032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:30,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506222876] [2022-11-03 03:51:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:30,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:30,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:30,097 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:30,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 03:51:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:30,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:51:30,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 03:51:30,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:30,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506222876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:30,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:30,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-03 03:51:30,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595225957] [2022-11-03 03:51:30,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:30,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:30,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:30,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:30,279 INFO L87 Difference]: Start difference. First operand 3623 states and 5704 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:51:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:31,039 INFO L93 Difference]: Finished difference Result 5011 states and 7486 transitions. [2022-11-03 03:51:31,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:31,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2022-11-03 03:51:31,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:31,051 INFO L225 Difference]: With dead ends: 5011 [2022-11-03 03:51:31,052 INFO L226 Difference]: Without dead ends: 3633 [2022-11-03 03:51:31,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:31,058 INFO L413 NwaCegarLoop]: 3223 mSDtfsCounter, 79 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 6361 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:31,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 6361 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:51:31,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-11-03 03:51:31,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3603. [2022-11-03 03:51:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 3151 states have (on average 1.6217073944779434) internal successors, (5110), 3164 states have internal predecessors, (5110), 258 states have call successors, (258), 193 states have call predecessors, (258), 192 states have return successors, (256), 246 states have call predecessors, (256), 256 states have call successors, (256) [2022-11-03 03:51:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 5624 transitions. [2022-11-03 03:51:31,373 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 5624 transitions. Word has length 102 [2022-11-03 03:51:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:31,373 INFO L495 AbstractCegarLoop]: Abstraction has 3603 states and 5624 transitions. [2022-11-03 03:51:31,374 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 03:51:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 5624 transitions. [2022-11-03 03:51:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 03:51:31,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:31,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:31,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:31,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 03:51:31,601 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:31,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:31,602 INFO L85 PathProgramCache]: Analyzing trace with hash -14759137, now seen corresponding path program 1 times [2022-11-03 03:51:31,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:31,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630807708] [2022-11-03 03:51:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:31,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 03:51:31,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:31,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630807708] [2022-11-03 03:51:31,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630807708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:31,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841569604] [2022-11-03 03:51:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:31,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:31,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:31,809 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:31,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 03:51:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:31,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:51:31,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:51:32,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:32,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841569604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:32,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:32,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-11-03 03:51:32,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275440071] [2022-11-03 03:51:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:32,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:32,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:32,055 INFO L87 Difference]: Start difference. First operand 3603 states and 5624 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:51:32,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:32,850 INFO L93 Difference]: Finished difference Result 5257 states and 7636 transitions. [2022-11-03 03:51:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:32,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 103 [2022-11-03 03:51:32,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:32,865 INFO L225 Difference]: With dead ends: 5257 [2022-11-03 03:51:32,865 INFO L226 Difference]: Without dead ends: 4239 [2022-11-03 03:51:32,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:32,870 INFO L413 NwaCegarLoop]: 3204 mSDtfsCounter, 3395 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3395 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:32,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3395 Valid, 3303 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:51:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2022-11-03 03:51:33,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3827. [2022-11-03 03:51:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 3356 states have (on average 1.58015494636472) internal successors, (5303), 3369 states have internal predecessors, (5303), 258 states have call successors, (258), 212 states have call predecessors, (258), 211 states have return successors, (268), 246 states have call predecessors, (268), 256 states have call successors, (268) [2022-11-03 03:51:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5829 transitions. [2022-11-03 03:51:33,170 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5829 transitions. Word has length 103 [2022-11-03 03:51:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:33,171 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5829 transitions. [2022-11-03 03:51:33,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:51:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5829 transitions. [2022-11-03 03:51:33,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 03:51:33,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:33,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:33,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:33,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 03:51:33,383 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:33,384 INFO L85 PathProgramCache]: Analyzing trace with hash -484329719, now seen corresponding path program 1 times [2022-11-03 03:51:33,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:33,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957894061] [2022-11-03 03:51:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:33,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:51:33,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:33,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957894061] [2022-11-03 03:51:33,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957894061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:33,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:33,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:33,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661036183] [2022-11-03 03:51:33,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:33,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:33,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:33,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:33,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:33,712 INFO L87 Difference]: Start difference. First operand 3827 states and 5829 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:51:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:34,754 INFO L93 Difference]: Finished difference Result 5705 states and 8066 transitions. [2022-11-03 03:51:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:51:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-11-03 03:51:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:34,769 INFO L225 Difference]: With dead ends: 5705 [2022-11-03 03:51:34,769 INFO L226 Difference]: Without dead ends: 4576 [2022-11-03 03:51:34,774 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 03:51:34,774 INFO L413 NwaCegarLoop]: 3195 mSDtfsCounter, 76 mSDsluCounter, 10074 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 12582 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:34,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 12582 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:51:34,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2022-11-03 03:51:35,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4477. [2022-11-03 03:51:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 3833 states have (on average 1.5246543177667624) internal successors, (5844), 3846 states have internal predecessors, (5844), 358 states have call successors, (358), 291 states have call predecessors, (358), 284 states have return successors, (386), 340 states have call predecessors, (386), 356 states have call successors, (386) [2022-11-03 03:51:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 6588 transitions. [2022-11-03 03:51:35,083 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 6588 transitions. Word has length 104 [2022-11-03 03:51:35,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:35,083 INFO L495 AbstractCegarLoop]: Abstraction has 4477 states and 6588 transitions. [2022-11-03 03:51:35,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:51:35,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 6588 transitions. [2022-11-03 03:51:35,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 03:51:35,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:35,089 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:35,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:51:35,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:35,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:35,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1130106033, now seen corresponding path program 1 times [2022-11-03 03:51:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:35,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444743304] [2022-11-03 03:51:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:35,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:51:35,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:35,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444743304] [2022-11-03 03:51:35,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444743304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:35,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062556600] [2022-11-03 03:51:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:35,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:35,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:35,304 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:35,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 03:51:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:35,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 03:51:35,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:35,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:35,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062556600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:35,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:35,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-11-03 03:51:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665255341] [2022-11-03 03:51:35,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:51:35,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:35,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:51:35,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:35,523 INFO L87 Difference]: Start difference. First operand 4477 states and 6588 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 03:51:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:36,762 INFO L93 Difference]: Finished difference Result 6777 states and 9277 transitions. [2022-11-03 03:51:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:51:36,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 104 [2022-11-03 03:51:36,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:36,776 INFO L225 Difference]: With dead ends: 6777 [2022-11-03 03:51:36,777 INFO L226 Difference]: Without dead ends: 4825 [2022-11-03 03:51:36,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 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 03:51:36,782 INFO L413 NwaCegarLoop]: 3196 mSDtfsCounter, 180 mSDsluCounter, 13340 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 15640 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:36,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 15640 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:51:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2022-11-03 03:51:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4662. [2022-11-03 03:51:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4662 states, 3973 states have (on average 1.506670022652907) internal successors, (5986), 3990 states have internal predecessors, (5986), 380 states have call successors, (380), 310 states have call predecessors, (380), 307 states have return successors, (418), 362 states have call predecessors, (418), 378 states have call successors, (418) [2022-11-03 03:51:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4662 states to 4662 states and 6784 transitions. [2022-11-03 03:51:37,121 INFO L78 Accepts]: Start accepts. Automaton has 4662 states and 6784 transitions. Word has length 104 [2022-11-03 03:51:37,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:37,121 INFO L495 AbstractCegarLoop]: Abstraction has 4662 states and 6784 transitions. [2022-11-03 03:51:37,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 03:51:37,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4662 states and 6784 transitions. [2022-11-03 03:51:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 03:51:37,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:37,127 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:37,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:37,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 03:51:37,343 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:37,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1845237448, now seen corresponding path program 1 times [2022-11-03 03:51:37,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:37,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550283944] [2022-11-03 03:51:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:37,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:51:37,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:37,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550283944] [2022-11-03 03:51:37,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550283944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:37,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45537082] [2022-11-03 03:51:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:37,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:37,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:37,900 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:37,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 03:51:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:38,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 03:51:38,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:51:38,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-03 03:51:38,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45537082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:38,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [255760044] [2022-11-03 03:51:38,652 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-03 03:51:38,652 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:51:38,656 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:51:38,661 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:51:38,662 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:51:44,904 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-03 03:51:49,777 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-03 03:51:50,339 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-03 03:51:50,385 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 67 for LOIs [2022-11-03 03:51:50,393 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-03 03:51:50,533 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-03 03:51:50,755 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:52:10,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [255760044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:10,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:52:10,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [13, 8, 6] total 64 [2022-11-03 03:52:10,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375474458] [2022-11-03 03:52:10,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:10,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-03 03:52:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:10,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-03 03:52:10,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=3582, Unknown=0, NotChecked=0, Total=4032 [2022-11-03 03:52:10,765 INFO L87 Difference]: Start difference. First operand 4662 states and 6784 transitions. Second operand has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-03 03:52:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:58,411 INFO L93 Difference]: Finished difference Result 7242 states and 9783 transitions. [2022-11-03 03:52:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-03 03:52:58,412 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) Word has length 110 [2022-11-03 03:52:58,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:58,425 INFO L225 Difference]: With dead ends: 7242 [2022-11-03 03:52:58,425 INFO L226 Difference]: Without dead ends: 4544 [2022-11-03 03:52:58,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3704 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=1204, Invalid=9926, Unknown=0, NotChecked=0, Total=11130 [2022-11-03 03:52:58,433 INFO L413 NwaCegarLoop]: 3157 mSDtfsCounter, 286 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 21442 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 3928 SdHoareTripleChecker+Invalid, 21579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 21442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:58,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 3928 Invalid, 21579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [137 Valid, 21442 Invalid, 0 Unknown, 0 Unchecked, 28.4s Time] [2022-11-03 03:52:58,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2022-11-03 03:52:58,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4516. [2022-11-03 03:52:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3862 states have (on average 1.5145002589331953) internal successors, (5849), 3878 states have internal predecessors, (5849), 359 states have call successors, (359), 295 states have call predecessors, (359), 293 states have return successors, (395), 343 states have call predecessors, (395), 357 states have call successors, (395) [2022-11-03 03:52:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 6603 transitions. [2022-11-03 03:52:58,893 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 6603 transitions. Word has length 110 [2022-11-03 03:52:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:58,894 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 6603 transitions. [2022-11-03 03:52:58,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-03 03:52:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 6603 transitions. [2022-11-03 03:52:58,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 03:52:58,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:58,898 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:58,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:59,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 03:52:59,115 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:59,115 INFO L85 PathProgramCache]: Analyzing trace with hash -806825934, now seen corresponding path program 1 times [2022-11-03 03:52:59,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:59,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729213957] [2022-11-03 03:52:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:59,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:52:59,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:59,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729213957] [2022-11-03 03:52:59,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729213957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:52:59,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239647054] [2022-11-03 03:52:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:59,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:59,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:59,385 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:52:59,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 03:52:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:59,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 03:52:59,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:52:59,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-03 03:52:59,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239647054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:52:59,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [143087040] [2022-11-03 03:52:59,934 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-03 03:52:59,934 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:52:59,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:52:59,935 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:52:59,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:53:04,828 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 72 for LOIs [2022-11-03 03:53:04,832 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-03 03:53:12,220 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-03 03:53:15,357 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-03 03:53:15,409 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 115 for LOIs [2022-11-03 03:53:15,432 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 121 for LOIs [2022-11-03 03:53:15,593 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-03 03:53:15,764 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:53:22,796 WARN L234 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 307 DAG size of output: 235 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:32,262 WARN L234 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 389 DAG size of output: 258 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:46,167 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '158636#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-03 03:53:46,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:53:46,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:53:46,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2022-11-03 03:53:46,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678971820] [2022-11-03 03:53:46,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:53:46,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:53:46,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:46,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:53:46,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3799, Unknown=0, NotChecked=0, Total=4290 [2022-11-03 03:53:46,171 INFO L87 Difference]: Start difference. First operand 4516 states and 6603 transitions. Second operand has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 03:53:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:49,941 INFO L93 Difference]: Finished difference Result 7170 states and 9780 transitions. [2022-11-03 03:53:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-03 03:53:49,943 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 113 [2022-11-03 03:53:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:49,957 INFO L225 Difference]: With dead ends: 7170 [2022-11-03 03:53:49,957 INFO L226 Difference]: Without dead ends: 4298 [2022-11-03 03:53:49,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 315 SyntacticMatches, 6 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9673 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=1755, Invalid=20895, Unknown=0, NotChecked=0, Total=22650 [2022-11-03 03:53:49,969 INFO L413 NwaCegarLoop]: 3309 mSDtfsCounter, 10429 mSDsluCounter, 21927 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10434 SdHoareTripleChecker+Valid, 23659 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:49,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10434 Valid, 23659 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 03:53:49,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2022-11-03 03:53:50,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 3758. [2022-11-03 03:53:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3281 states have (on average 1.56903383114904) internal successors, (5148), 3301 states have internal predecessors, (5148), 251 states have call successors, (251), 220 states have call predecessors, (251), 224 states have return successors, (277), 237 states have call predecessors, (277), 249 states have call successors, (277) [2022-11-03 03:53:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5676 transitions. [2022-11-03 03:53:50,268 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5676 transitions. Word has length 113 [2022-11-03 03:53:50,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:50,269 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 5676 transitions. [2022-11-03 03:53:50,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 03:53:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5676 transitions. [2022-11-03 03:53:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 03:53:50,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:50,272 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:50,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:50,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 03:53:50,485 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:50,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash -724063171, now seen corresponding path program 1 times [2022-11-03 03:53:50,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:50,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299027387] [2022-11-03 03:53:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:50,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:53:51,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:51,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299027387] [2022-11-03 03:53:51,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299027387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:51,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215666408] [2022-11-03 03:53:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:51,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:51,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:51,020 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:51,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 03:53:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:51,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 03:53:51,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:53:51,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-03 03:53:51,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215666408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:51,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1027362774] [2022-11-03 03:53:51,576 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-03 03:53:51,576 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:53:51,576 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:53:51,577 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:53:51,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:53:56,022 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-03 03:53:59,714 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-03 03:54:03,386 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-03 03:54:03,429 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 68 for LOIs [2022-11-03 03:54:03,439 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-03 03:54:03,518 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-03 03:54:03,764 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:54:12,737 WARN L234 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 342 DAG size of output: 270 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:29,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1027362774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:29,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:54:29,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [13, 8, 6] total 65 [2022-11-03 03:54:29,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599537365] [2022-11-03 03:54:29,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:29,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-03 03:54:29,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:29,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-03 03:54:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=3702, Unknown=0, NotChecked=0, Total=4160 [2022-11-03 03:54:29,371 INFO L87 Difference]: Start difference. First operand 3758 states and 5676 transitions. Second operand has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-03 03:54:59,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:59,298 INFO L93 Difference]: Finished difference Result 5482 states and 7655 transitions. [2022-11-03 03:54:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-03 03:54:59,299 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) Word has length 113 [2022-11-03 03:54:59,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:59,307 INFO L225 Difference]: With dead ends: 5482 [2022-11-03 03:54:59,308 INFO L226 Difference]: Without dead ends: 3579 [2022-11-03 03:54:59,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3855 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=1203, Invalid=10139, Unknown=0, NotChecked=0, Total=11342 [2022-11-03 03:54:59,314 INFO L413 NwaCegarLoop]: 3157 mSDtfsCounter, 330 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 8941 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 3834 SdHoareTripleChecker+Invalid, 9105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 8941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:59,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 3834 Invalid, 9105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 8941 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2022-11-03 03:54:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2022-11-03 03:54:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3527. [2022-11-03 03:54:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3109 states have (on average 1.594724991958829) internal successors, (4958), 3127 states have internal predecessors, (4958), 218 states have call successors, (218), 193 states have call predecessors, (218), 198 states have return successors, (242), 207 states have call predecessors, (242), 216 states have call successors, (242) [2022-11-03 03:54:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 5418 transitions. [2022-11-03 03:54:59,579 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 5418 transitions. Word has length 113 [2022-11-03 03:54:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:59,580 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 5418 transitions. [2022-11-03 03:54:59,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-03 03:54:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 5418 transitions. [2022-11-03 03:54:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 03:54:59,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:59,583 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:59,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:59,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:59,799 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:59,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1607272299, now seen corresponding path program 1 times [2022-11-03 03:54:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:59,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202941891] [2022-11-03 03:54:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:59,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:55:00,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:00,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202941891] [2022-11-03 03:55:00,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202941891] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:00,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559900570] [2022-11-03 03:55:00,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:00,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:00,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:00,503 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:00,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 03:55:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:00,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 03:55:00,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:55:01,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-03 03:55:02,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559900570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:55:02,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1152209338] [2022-11-03 03:55:02,010 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-03 03:55:02,010 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:55:02,010 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:55:02,010 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:55:02,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:55:07,028 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 63 for LOIs [2022-11-03 03:55:07,031 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 170 for LOIs [2022-11-03 03:55:10,921 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-03 03:55:12,803 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-03 03:55:12,846 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 56 for LOIs [2022-11-03 03:55:12,852 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-03 03:55:12,935 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 56 for LOIs [2022-11-03 03:55:13,228 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:55:44,224 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '185712#(and (= ~a15~0 1) (= 5 ~a20~0) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (= ~a27~0 1) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-03 03:55:44,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:55:44,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:55:44,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 14] total 37 [2022-11-03 03:55:44,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270380282] [2022-11-03 03:55:44,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:55:44,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-03 03:55:44,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:44,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-03 03:55:44,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=696, Invalid=7676, Unknown=0, NotChecked=0, Total=8372 [2022-11-03 03:55:44,228 INFO L87 Difference]: Start difference. First operand 3527 states and 5418 transitions. Second operand has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) [2022-11-03 03:55:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:53,841 INFO L93 Difference]: Finished difference Result 7917 states and 10527 transitions. [2022-11-03 03:55:53,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-03 03:55:53,842 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) Word has length 116 [2022-11-03 03:55:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:53,861 INFO L225 Difference]: With dead ends: 7917 [2022-11-03 03:55:53,861 INFO L226 Difference]: Without dead ends: 6794 [2022-11-03 03:55:53,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 284 SyntacticMatches, 17 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14629 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=3805, Invalid=30977, Unknown=0, NotChecked=0, Total=34782 [2022-11-03 03:55:53,873 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 21944 mSDsluCounter, 37497 mSDsCounter, 0 mSdLazyCounter, 7181 mSolverCounterSat, 1702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21950 SdHoareTripleChecker+Valid, 38117 SdHoareTripleChecker+Invalid, 8883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1702 IncrementalHoareTripleChecker+Valid, 7181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:53,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21950 Valid, 38117 Invalid, 8883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1702 Valid, 7181 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 03:55:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2022-11-03 03:55:54,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 3841. [2022-11-03 03:55:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3841 states, 3338 states have (on average 1.5566207309766327) internal successors, (5196), 3366 states have internal predecessors, (5196), 263 states have call successors, (263), 229 states have call predecessors, (263), 238 states have return successors, (281), 246 states have call predecessors, (281), 261 states have call successors, (281) [2022-11-03 03:55:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 5740 transitions. [2022-11-03 03:55:54,316 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 5740 transitions. Word has length 116 [2022-11-03 03:55:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:54,318 INFO L495 AbstractCegarLoop]: Abstraction has 3841 states and 5740 transitions. [2022-11-03 03:55:54,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) [2022-11-03 03:55:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 5740 transitions. [2022-11-03 03:55:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 03:55:54,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:54,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:54,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:54,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:54,547 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:54,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash 907514321, now seen corresponding path program 1 times [2022-11-03 03:55:54,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:54,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524271358] [2022-11-03 03:55:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:54,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 03:55:54,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:54,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524271358] [2022-11-03 03:55:54,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524271358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:54,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:54,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:55:54,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117908410] [2022-11-03 03:55:54,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:54,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:55:54,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:54,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:55:54,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:55:54,750 INFO L87 Difference]: Start difference. First operand 3841 states and 5740 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:55:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:56,125 INFO L93 Difference]: Finished difference Result 7345 states and 9735 transitions. [2022-11-03 03:55:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:55:56,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 128 [2022-11-03 03:55:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:56,138 INFO L225 Difference]: With dead ends: 7345 [2022-11-03 03:55:56,138 INFO L226 Difference]: Without dead ends: 6105 [2022-11-03 03:55:56,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:55:56,144 INFO L413 NwaCegarLoop]: 3285 mSDtfsCounter, 3501 mSDsluCounter, 6942 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 9727 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:56,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3501 Valid, 9727 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:55:56,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2022-11-03 03:55:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 4798. [2022-11-03 03:55:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4067 states have (on average 1.484140644209491) internal successors, (6036), 4104 states have internal predecessors, (6036), 384 states have call successors, (384), 330 states have call predecessors, (384), 345 states have return successors, (408), 364 states have call predecessors, (408), 382 states have call successors, (408) [2022-11-03 03:55:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6828 transitions. [2022-11-03 03:55:56,745 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6828 transitions. Word has length 128 [2022-11-03 03:55:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:56,745 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6828 transitions. [2022-11-03 03:55:56,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:55:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6828 transitions. [2022-11-03 03:55:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 03:55:56,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:56,749 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:56,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 03:55:56,749 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:56,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash -713986447, now seen corresponding path program 1 times [2022-11-03 03:55:56,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:56,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821666714] [2022-11-03 03:55:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:56,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:55:56,782 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:55:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:55:56,898 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:55:56,899 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:55:56,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-03 03:55:56,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-03 03:55:56,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 03:55:56,906 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:56,912 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:55:57,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:55:57 BoogieIcfgContainer [2022-11-03 03:55:57,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:55:57,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:55:57,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:55:57,085 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:55:57,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:13" (3/4) ... [2022-11-03 03:55:57,090 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 03:55:57,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:55:57,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:55:57,231 INFO L158 Benchmark]: Toolchain (without parser) took 301238.33ms. Allocated memory was 100.7MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 58.2MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-03 03:55:57,231 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:55:57,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4361.41ms. Allocated memory was 100.7MB in the beginning and 257.9MB in the end (delta: 157.3MB). Free memory was 57.8MB in the beginning and 147.6MB in the end (delta: -89.9MB). Peak memory consumption was 131.8MB. Max. memory is 16.1GB. [2022-11-03 03:55:57,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 480.78ms. Allocated memory is still 257.9MB. Free memory was 147.6MB in the beginning and 118.8MB in the end (delta: 28.8MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. [2022-11-03 03:55:57,234 INFO L158 Benchmark]: Boogie Preprocessor took 608.54ms. Allocated memory was 257.9MB in the beginning and 463.5MB in the end (delta: 205.5MB). Free memory was 118.8MB in the beginning and 303.4MB in the end (delta: -184.5MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. [2022-11-03 03:55:57,234 INFO L158 Benchmark]: RCFGBuilder took 11692.15ms. Allocated memory was 463.5MB in the beginning and 1.4GB in the end (delta: 975.2MB). Free memory was 303.4MB in the beginning and 805.5MB in the end (delta: -502.2MB). Peak memory consumption was 532.8MB. Max. memory is 16.1GB. [2022-11-03 03:55:57,235 INFO L158 Benchmark]: TraceAbstraction took 283943.43ms. Allocated memory was 1.4GB in the beginning and 2.7GB in the end (delta: 1.3GB). Free memory was 805.5MB in the beginning and 1.6GB in the end (delta: -764.7MB). Peak memory consumption was 535.5MB. Max. memory is 16.1GB. [2022-11-03 03:55:57,235 INFO L158 Benchmark]: Witness Printer took 141.66ms. Allocated memory is still 2.7GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 03:55:57,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4361.41ms. Allocated memory was 100.7MB in the beginning and 257.9MB in the end (delta: 157.3MB). Free memory was 57.8MB in the beginning and 147.6MB in the end (delta: -89.9MB). Peak memory consumption was 131.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 480.78ms. Allocated memory is still 257.9MB. Free memory was 147.6MB in the beginning and 118.8MB in the end (delta: 28.8MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 608.54ms. Allocated memory was 257.9MB in the beginning and 463.5MB in the end (delta: 205.5MB). Free memory was 118.8MB in the beginning and 303.4MB in the end (delta: -184.5MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. * RCFGBuilder took 11692.15ms. Allocated memory was 463.5MB in the beginning and 1.4GB in the end (delta: 975.2MB). Free memory was 303.4MB in the beginning and 805.5MB in the end (delta: -502.2MB). Peak memory consumption was 532.8MB. Max. memory is 16.1GB. * TraceAbstraction took 283943.43ms. Allocated memory was 1.4GB in the beginning and 2.7GB in the end (delta: 1.3GB). Free memory was 805.5MB in the beginning and 1.6GB in the end (delta: -764.7MB). Peak memory consumption was 535.5MB. Max. memory is 16.1GB. * Witness Printer took 141.66ms. Allocated memory is still 2.7GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int t2_pc = 0; [L11180] int m_st ; [L11181] int t1_st ; [L11182] int t2_st ; [L11183] int m_i ; [L11184] int t1_i ; [L11185] int t2_i ; [L11186] int M_E = 2; [L11187] int T1_E = 2; [L11188] int T2_E = 2; [L11189] int E_M = 2; [L11190] int E_1 = 2; [L11191] int E_2 = 2; [L11196] int token ; [L11198] int local ; [L11776] COND FALSE !(__VERIFIER_nondet_int()) [L11779] CALL main2() [L11763] int __retres1 ; [L11767] CALL init_model() [L11677] m_i = 1 [L11678] t1_i = 1 [L11679] t2_i = 1 [L11767] RET init_model() [L11768] CALL start_simulation() [L11704] int kernel_st ; [L11705] int tmp ; [L11706] int tmp___0 ; [L11710] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11711] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11712] CALL init_threads() [L11396] COND TRUE m_i == 1 [L11397] m_st = 0 [L11401] COND TRUE t1_i == 1 [L11402] t1_st = 0 [L11406] COND TRUE t2_i == 1 [L11407] t2_st = 0 [L11712] RET init_threads() [L11713] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11509] COND FALSE !(M_E == 0) [L11514] COND FALSE !(T1_E == 0) [L11519] COND FALSE !(T2_E == 0) [L11524] COND FALSE !(E_M == 0) [L11529] COND FALSE !(E_1 == 0) [L11534] COND FALSE !(E_2 == 0) [L11713] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11714] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11341] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11350] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11360] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11369] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11379] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11714] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11715] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11547] COND FALSE !(M_E == 1) [L11552] COND FALSE !(T1_E == 1) [L11557] COND FALSE !(T2_E == 1) [L11562] COND FALSE !(E_M == 1) [L11567] COND FALSE !(E_1 == 1) [L11572] COND FALSE !(E_2 == 1) [L11715] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11718] COND TRUE 1 [L11721] kernel_st = 1 [L11722] CALL eval() [L11442] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE \read(tmp_ndt_2) [L11475] t1_st = 1 [L11476] CALL transmit1() [L11259] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET transmit1() [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE \read(tmp_ndt_3) [L11489] t2_st = 1 [L11490] CALL transmit2() [L11295] COND TRUE t2_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, token=0] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET transmit2() [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11214] COND TRUE 1 [L11217] token = __VERIFIER_nondet_int() [L11218] local = token [L11219] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11220] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11620] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11341] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11351] COND TRUE E_1 == 1 [L11352] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND TRUE \read(tmp___0) [L11599] t1_st = 0 [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11370] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11379] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11220] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11221] E_1 = 2 [L11222] m_pc = 1 [L11223] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11462] RET master() [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE \read(tmp_ndt_2) [L11475] t1_st = 1 [L11476] CALL transmit1() [L11259] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11262] COND TRUE t1_pc == 1 [L11278] token += 1 [L11279] E_2 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11280] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11620] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11331] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11332] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11341] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11351] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11360] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11370] COND TRUE E_2 == 1 [L11371] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND TRUE \read(tmp___1) [L11607] t2_st = 0 [L11620] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L11280] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L11281] E_2 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET transmit1() [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE \read(tmp_ndt_3) [L11489] t2_st = 1 [L11490] CALL transmit2() [L11295] COND FALSE !(t2_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=1] [L11298] COND TRUE t2_pc == 1 [L11314] token += 1 [L11315] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11316] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11620] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11331] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11332] COND TRUE E_M == 1 [L11333] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND TRUE \read(tmp) [L11591] m_st = 0 [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11351] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11360] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11370] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11379] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11316] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11317] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET transmit2() [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11206] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11228] COND FALSE !(token != local + 2) [L11233] COND TRUE tmp_var <= 5 [L11234] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11239] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11240] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11241] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11242] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] - UnprovableResult [Line: 11049]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1727 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 283.7s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 104.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64511 SdHoareTripleChecker+Valid, 55.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64439 mSDsluCounter, 196176 SdHoareTripleChecker+Invalid, 49.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138653 mSDsCounter, 2616 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50811 IncrementalHoareTripleChecker+Invalid, 53427 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2616 mSolverCounterUnsat, 67068 mSDtfsCounter, 50811 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2949 GetRequests, 2295 SyntacticMatches, 25 SemanticMatches, 629 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31945 ImplicationChecksByTransitivity, 150.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4798occurred in iteration=21, InterpolantAutomatonStates: 414, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 6413 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 3681 NumberOfCodeBlocks, 3642 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 3962 ConstructedInterpolants, 0 QuantifiedInterpolants, 8318 SizeOfPredicates, 24 NumberOfNonLiveVariables, 7246 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 40 InterpolantComputations, 17 PerfectInterpolantSequences, 2132/2425 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 24.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 14, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 176, DAG_INTERPRETER_EARLY_EXITS: 11, TOOLS_POST_APPLICATIONS: 197, TOOLS_POST_TIME: 16.2s, TOOLS_POST_CALL_APPLICATIONS: 126, TOOLS_POST_CALL_TIME: 3.2s, TOOLS_POST_RETURN_APPLICATIONS: 100, TOOLS_POST_RETURN_TIME: 1.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 413, TOOLS_QUANTIFIERELIM_TIME: 21.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 4.9s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 497, FLUID_YES_ANSWERS: 1, DOMAIN_JOIN_APPLICATIONS: 143, DOMAIN_JOIN_TIME: 2.4s, DOMAIN_ALPHA_APPLICATIONS: 1, DOMAIN_ALPHA_TIME: 0.1s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 8, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 176, DOMAIN_ISBOTTOM_TIME: 0.3s, LOOP_SUMMARIZER_APPLICATIONS: 8, LOOP_SUMMARIZER_CACHE_MISSES: 8, LOOP_SUMMARIZER_OVERALL_TIME: 3.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 3.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 8, CALL_SUMMARIZER_APPLICATIONS: 100, CALL_SUMMARIZER_CACHE_MISSES: 12, CALL_SUMMARIZER_OVERALL_TIME: 0.3s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 7082, DAG_COMPRESSION_RETAINED_NODES: 489, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-03 03:55:57,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140ef971-6914-475c-be2f-095e7c28e3c2/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