./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS --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 cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 --- 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-8393723 [2022-11-19 07:35:53,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:35:53,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:35:53,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:35:53,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:35:53,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:35:53,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:35:53,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:35:53,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:35:53,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:35:53,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:35:53,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:35:53,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:35:53,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:35:53,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:35:53,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:35:53,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:35:53,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:35:53,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:35:53,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:35:53,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:35:53,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:35:53,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:35:53,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:35:53,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:35:53,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:35:53,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:35:53,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:35:53,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:35:53,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:35:53,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:35:53,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:35:53,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:35:53,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:35:53,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:35:53,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:35:53,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:35:53,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:35:53,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:35:53,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:35:53,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:35:53,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:35:53,197 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:35:53,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:35:53,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:35:53,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:35:53,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:35:53,199 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:35:53,199 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:35:53,199 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:35:53,200 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:35:53,200 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:35:53,200 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:35:53,201 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:35:53,201 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:35:53,201 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:35:53,201 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:35:53,202 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:35:53,202 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:35:53,202 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:35:53,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:35:53,203 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:35:53,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:35:53,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:35:53,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:35:53,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:35:53,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:35:53,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:35:53,205 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:35:53,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:35:53,206 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:35:53,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:35:53,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:35:53,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:35:53,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:35:53,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:35:53,207 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:35:53,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:35:53,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:35:53,208 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:35:53,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:35:53,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:35:53,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:35:53,209 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_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 [2022-11-19 07:35:53,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:35:53,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:35:53,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:35:53,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:35:53,490 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:35:53,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2022-11-19 07:35:53,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/data/ef69a461e/7d5ef27f37474159aa4839e37f44fa92/FLAGc79a36050 [2022-11-19 07:35:54,660 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:35:54,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2022-11-19 07:35:54,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/data/ef69a461e/7d5ef27f37474159aa4839e37f44fa92/FLAGc79a36050 [2022-11-19 07:35:55,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/data/ef69a461e/7d5ef27f37474159aa4839e37f44fa92 [2022-11-19 07:35:55,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:35:55,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:35:55,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:55,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:35:55,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:35:55,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:55" (1/1) ... [2022-11-19 07:35:55,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2170f414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55, skipping insertion in model container [2022-11-19 07:35:55,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:55" (1/1) ... [2022-11-19 07:35:55,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:35:55,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:35:57,599 WARN L234 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_05f6695c-214d-47af-98ee-114dde8fd872/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2022-11-19 07:35:57,632 WARN L234 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_05f6695c-214d-47af-98ee-114dde8fd872/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2022-11-19 07:35:57,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:57,830 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:35:59,043 WARN L234 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_05f6695c-214d-47af-98ee-114dde8fd872/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2022-11-19 07:35:59,051 WARN L234 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_05f6695c-214d-47af-98ee-114dde8fd872/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2022-11-19 07:35:59,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:59,135 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:35:59,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59 WrapperNode [2022-11-19 07:35:59,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:59,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:59,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:35:59,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:35:59,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:35:59,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:35:59,714 INFO L138 Inliner]: procedures = 46, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12566 [2022-11-19 07:35:59,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:59,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:35:59,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:35:59,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:35:59,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:35:59,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:35:59,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:35:59,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:36:00,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:36:00,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:36:00,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:36:00,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:36:00,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:36:00,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:36:00,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:36:00,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:36:00,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (1/1) ... [2022-11-19 07:36:00,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:36:00,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:00,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:36:00,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:36:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:36:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-19 07:36:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-19 07:36:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-19 07:36:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-19 07:36:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-19 07:36:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-19 07:36:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-19 07:36:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-19 07:36:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-19 07:36:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-19 07:36:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-19 07:36:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-19 07:36:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:36:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-19 07:36:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-19 07:36:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:36:00,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:36:00,630 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:36:00,635 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:36:09,390 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:36:11,257 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:36:11,258 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-19 07:36:11,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:11 BoogieIcfgContainer [2022-11-19 07:36:11,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:36:11,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:36:11,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:36:11,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:36:11,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:55" (1/3) ... [2022-11-19 07:36:11,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46199d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:11, skipping insertion in model container [2022-11-19 07:36:11,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:59" (2/3) ... [2022-11-19 07:36:11,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46199d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:11, skipping insertion in model container [2022-11-19 07:36:11,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:11" (3/3) ... [2022-11-19 07:36:11,273 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.01.cil-2.c [2022-11-19 07:36:11,293 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:36:11,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:36:11,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:36:11,394 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;@6dd1089, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:36:11,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:36:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 1716 states, 1689 states have (on average 1.9792776791000593) internal successors, (3343), 1694 states have internal predecessors, (3343), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-19 07:36:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 07:36:11,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:11,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:11,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:11,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1699445636, now seen corresponding path program 1 times [2022-11-19 07:36:11,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:11,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088373120] [2022-11-19 07:36:11,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:11,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:36:11,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:11,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088373120] [2022-11-19 07:36:11,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088373120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:11,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:11,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:36:11,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217739521] [2022-11-19 07:36:11,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:11,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:36:11,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:11,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:36:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:36:11,837 INFO L87 Difference]: Start difference. First operand has 1716 states, 1689 states have (on average 1.9792776791000593) internal successors, (3343), 1694 states have internal predecessors, (3343), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:36:12,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:12,703 INFO L93 Difference]: Finished difference Result 3481 states and 6831 transitions. [2022-11-19 07:36:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:36:12,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2022-11-19 07:36:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:12,733 INFO L225 Difference]: With dead ends: 3481 [2022-11-19 07:36:12,737 INFO L226 Difference]: Without dead ends: 1764 [2022-11-19 07:36:12,747 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 [2022-11-19 07:36:12,751 INFO L413 NwaCegarLoop]: 3188 mSDtfsCounter, 3424 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:12,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3424 Valid, 6320 Invalid, 568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:36:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-11-19 07:36:12,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1763. [2022-11-19 07:36:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1721 states have (on average 1.9604880883207438) internal successors, (3374), 1725 states have internal predecessors, (3374), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-19 07:36:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 3428 transitions. [2022-11-19 07:36:12,885 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 3428 transitions. Word has length 35 [2022-11-19 07:36:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:12,887 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 3428 transitions. [2022-11-19 07:36:12,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:36:12,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 3428 transitions. [2022-11-19 07:36:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:36:12,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:12,897 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:12,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:36:12,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:12,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash 987803097, now seen corresponding path program 1 times [2022-11-19 07:36:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:12,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028892883] [2022-11-19 07:36:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:36:13,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:13,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028892883] [2022-11-19 07:36:13,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028892883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:13,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:13,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:36:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069675785] [2022-11-19 07:36:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:36:13,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:13,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:36:13,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:36:13,428 INFO L87 Difference]: Start difference. First operand 1763 states and 3428 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-19 07:36:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:14,246 INFO L93 Difference]: Finished difference Result 1995 states and 3731 transitions. [2022-11-19 07:36:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:36:14,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 60 [2022-11-19 07:36:14,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:14,263 INFO L225 Difference]: With dead ends: 1995 [2022-11-19 07:36:14,264 INFO L226 Difference]: Without dead ends: 1879 [2022-11-19 07:36:14,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:36:14,274 INFO L413 NwaCegarLoop]: 3147 mSDtfsCounter, 3446 mSDsluCounter, 6222 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3456 SdHoareTripleChecker+Valid, 9369 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:14,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3456 Valid, 9369 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:36:14,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-19 07:36:14,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1863. [2022-11-19 07:36:14,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1789 states have (on average 1.9334823923979878) internal successors, (3459), 1794 states have internal predecessors, (3459), 48 states have call successors, (48), 25 states have call predecessors, (48), 24 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-19 07:36:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 3553 transitions. [2022-11-19 07:36:14,349 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 3553 transitions. Word has length 60 [2022-11-19 07:36:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:14,350 INFO L495 AbstractCegarLoop]: Abstraction has 1863 states and 3553 transitions. [2022-11-19 07:36:14,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-19 07:36:14,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 3553 transitions. [2022-11-19 07:36:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 07:36:14,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:14,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:14,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:36:14,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:14,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1537854482, now seen corresponding path program 1 times [2022-11-19 07:36:14,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:14,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369016963] [2022-11-19 07:36:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:14,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:36:14,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:14,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369016963] [2022-11-19 07:36:14,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369016963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:14,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:14,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:36:14,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18013806] [2022-11-19 07:36:14,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:14,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:36:14,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:36:14,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:36:14,452 INFO L87 Difference]: Start difference. First operand 1863 states and 3553 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:36:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:14,938 INFO L93 Difference]: Finished difference Result 2031 states and 3769 transitions. [2022-11-19 07:36:14,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:36:14,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2022-11-19 07:36:14,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:14,947 INFO L225 Difference]: With dead ends: 2031 [2022-11-19 07:36:14,948 INFO L226 Difference]: Without dead ends: 1913 [2022-11-19 07:36:14,953 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 [2022-11-19 07:36:14,956 INFO L413 NwaCegarLoop]: 3163 mSDtfsCounter, 27 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6296 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:14,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6296 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:36:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2022-11-19 07:36:15,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1883. [2022-11-19 07:36:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1805 states have (on average 1.9285318559556788) internal successors, (3481), 1810 states have internal predecessors, (3481), 50 states have call successors, (50), 27 states have call predecessors, (50), 26 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-19 07:36:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3579 transitions. [2022-11-19 07:36:15,027 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3579 transitions. Word has length 61 [2022-11-19 07:36:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:15,030 INFO L495 AbstractCegarLoop]: Abstraction has 1883 states and 3579 transitions. [2022-11-19 07:36:15,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:36:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3579 transitions. [2022-11-19 07:36:15,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 07:36:15,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:15,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:15,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:36:15,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:15,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1975236521, now seen corresponding path program 1 times [2022-11-19 07:36:15,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:15,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494108457] [2022-11-19 07:36:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:15,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 07:36:15,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:15,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494108457] [2022-11-19 07:36:15,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494108457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:15,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:15,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:36:15,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135091904] [2022-11-19 07:36:15,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:15,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:36:15,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:15,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:36:15,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:36:15,098 INFO L87 Difference]: Start difference. First operand 1883 states and 3579 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 07:36:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:15,640 INFO L93 Difference]: Finished difference Result 2239 states and 4039 transitions. [2022-11-19 07:36:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:36:15,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2022-11-19 07:36:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:15,652 INFO L225 Difference]: With dead ends: 2239 [2022-11-19 07:36:15,652 INFO L226 Difference]: Without dead ends: 2002 [2022-11-19 07:36:15,654 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 [2022-11-19 07:36:15,659 INFO L413 NwaCegarLoop]: 3172 mSDtfsCounter, 3331 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:15,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 3239 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:36:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-11-19 07:36:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1995. [2022-11-19 07:36:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1883 states have (on average 1.8990971853425385) internal successors, (3576), 1889 states have internal predecessors, (3576), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-19 07:36:15,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3716 transitions. [2022-11-19 07:36:15,747 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3716 transitions. Word has length 77 [2022-11-19 07:36:15,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:15,748 INFO L495 AbstractCegarLoop]: Abstraction has 1995 states and 3716 transitions. [2022-11-19 07:36:15,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 07:36:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3716 transitions. [2022-11-19 07:36:15,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-19 07:36:15,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:15,752 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:15,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:36:15,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:15,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:15,753 INFO L85 PathProgramCache]: Analyzing trace with hash -9510204, now seen corresponding path program 1 times [2022-11-19 07:36:15,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:15,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142464916] [2022-11-19 07:36:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:15,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 07:36:15,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:15,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142464916] [2022-11-19 07:36:15,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142464916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:15,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220933341] [2022-11-19 07:36:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:16,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:16,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:16,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:36:16,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:36:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:16,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:36:16,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 07:36:16,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:36:16,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220933341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:16,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:36:16,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-19 07:36:16,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123945933] [2022-11-19 07:36:16,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:16,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:36:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:36:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:16,233 INFO L87 Difference]: Start difference. First operand 1995 states and 3716 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:36:16,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:16,766 INFO L93 Difference]: Finished difference Result 2237 states and 4040 transitions. [2022-11-19 07:36:16,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:36:16,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 88 [2022-11-19 07:36:16,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:16,776 INFO L225 Difference]: With dead ends: 2237 [2022-11-19 07:36:16,776 INFO L226 Difference]: Without dead ends: 2001 [2022-11-19 07:36:16,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:16,779 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 65 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6288 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:16,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6288 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:36:16,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2022-11-19 07:36:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1993. [2022-11-19 07:36:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1881 states have (on average 1.894736842105263) internal successors, (3564), 1887 states have internal predecessors, (3564), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-19 07:36:16,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3704 transitions. [2022-11-19 07:36:16,863 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3704 transitions. Word has length 88 [2022-11-19 07:36:16,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:16,863 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3704 transitions. [2022-11-19 07:36:16,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:36:16,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3704 transitions. [2022-11-19 07:36:16,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-19 07:36:16,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:16,866 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:16,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:17,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:17,074 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:17,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:17,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1920907138, now seen corresponding path program 1 times [2022-11-19 07:36:17,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:17,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891488098] [2022-11-19 07:36:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:17,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 07:36:17,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:17,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891488098] [2022-11-19 07:36:17,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891488098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:17,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032940233] [2022-11-19 07:36:17,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:17,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:17,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:17,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:36:17,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:36:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:17,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:36:17,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:36:17,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:36:17,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032940233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:17,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:36:17,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-19 07:36:17,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567178998] [2022-11-19 07:36:17,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:17,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:36:17,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:17,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:36:17,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:17,486 INFO L87 Difference]: Start difference. First operand 1993 states and 3704 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-19 07:36:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:17,936 INFO L93 Difference]: Finished difference Result 2287 states and 4066 transitions. [2022-11-19 07:36:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:36:17,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2022-11-19 07:36:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:17,947 INFO L225 Difference]: With dead ends: 2287 [2022-11-19 07:36:17,948 INFO L226 Difference]: Without dead ends: 2054 [2022-11-19 07:36:17,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:17,954 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 3341 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3341 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:17,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3341 Valid, 3152 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:36:17,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-11-19 07:36:18,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2054. [2022-11-19 07:36:18,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1932 states have (on average 1.8726708074534162) internal successors, (3618), 1938 states have internal predecessors, (3618), 73 states have call successors, (73), 48 states have call predecessors, (73), 47 states have return successors, (71), 68 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-19 07:36:18,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3762 transitions. [2022-11-19 07:36:18,049 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3762 transitions. Word has length 88 [2022-11-19 07:36:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:18,050 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3762 transitions. [2022-11-19 07:36:18,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-19 07:36:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3762 transitions. [2022-11-19 07:36:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-19 07:36:18,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:18,059 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:18,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:18,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:36:18,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:18,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1365012435, now seen corresponding path program 1 times [2022-11-19 07:36:18,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:18,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664800248] [2022-11-19 07:36:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:18,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 07:36:18,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:18,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664800248] [2022-11-19 07:36:18,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664800248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:18,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864738523] [2022-11-19 07:36:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:18,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:18,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:18,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:36:18,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:36:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:18,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:36:18,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:36:18,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:36:18,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864738523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:18,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:36:18,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-19 07:36:18,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897801028] [2022-11-19 07:36:18,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:18,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:36:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:18,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:36:18,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:18,698 INFO L87 Difference]: Start difference. First operand 2054 states and 3762 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-19 07:36:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:19,277 INFO L93 Difference]: Finished difference Result 2606 states and 4422 transitions. [2022-11-19 07:36:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:36:19,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2022-11-19 07:36:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:19,290 INFO L225 Difference]: With dead ends: 2606 [2022-11-19 07:36:19,291 INFO L226 Difference]: Without dead ends: 2199 [2022-11-19 07:36:19,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:19,294 INFO L413 NwaCegarLoop]: 3151 mSDtfsCounter, 39 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6269 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:19,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6269 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:36:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2022-11-19 07:36:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2090. [2022-11-19 07:36:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1958 states have (on average 1.86414708886619) internal successors, (3650), 1965 states have internal predecessors, (3650), 78 states have call successors, (78), 53 states have call predecessors, (78), 52 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2022-11-19 07:36:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3804 transitions. [2022-11-19 07:36:19,402 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3804 transitions. Word has length 89 [2022-11-19 07:36:19,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:19,403 INFO L495 AbstractCegarLoop]: Abstraction has 2090 states and 3804 transitions. [2022-11-19 07:36:19,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-19 07:36:19,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3804 transitions. [2022-11-19 07:36:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-19 07:36:19,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:19,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:19,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:19,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:36:19,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:19,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:19,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1207598722, now seen corresponding path program 1 times [2022-11-19 07:36:19,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:19,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024787378] [2022-11-19 07:36:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:19,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 07:36:19,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:19,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024787378] [2022-11-19 07:36:19,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024787378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:19,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401013941] [2022-11-19 07:36:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:19,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:19,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:19,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:36:19,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:36:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:19,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:36:19,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:36:19,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:36:19,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401013941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:19,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:36:19,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-19 07:36:19,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152556167] [2022-11-19 07:36:19,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:19,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:36:19,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:36:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:36:19,872 INFO L87 Difference]: Start difference. First operand 2090 states and 3804 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:36:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:20,528 INFO L93 Difference]: Finished difference Result 2487 states and 4283 transitions. [2022-11-19 07:36:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:36:20,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 89 [2022-11-19 07:36:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:20,538 INFO L225 Difference]: With dead ends: 2487 [2022-11-19 07:36:20,538 INFO L226 Difference]: Without dead ends: 2193 [2022-11-19 07:36:20,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:36:20,541 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 42 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:20,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6298 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:36:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2022-11-19 07:36:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2124. [2022-11-19 07:36:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 1984 states have (on average 1.8568548387096775) internal successors, (3684), 1991 states have internal predecessors, (3684), 82 states have call successors, (82), 57 states have call predecessors, (82), 56 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2022-11-19 07:36:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3846 transitions. [2022-11-19 07:36:20,621 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3846 transitions. Word has length 89 [2022-11-19 07:36:20,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:20,621 INFO L495 AbstractCegarLoop]: Abstraction has 2124 states and 3846 transitions. [2022-11-19 07:36:20,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:36:20,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3846 transitions. [2022-11-19 07:36:20,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 07:36:20,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:20,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:20,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:20,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 07:36:20,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:20,832 INFO L85 PathProgramCache]: Analyzing trace with hash 625350610, now seen corresponding path program 1 times [2022-11-19 07:36:20,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:20,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504334522] [2022-11-19 07:36:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:20,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 07:36:21,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:21,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504334522] [2022-11-19 07:36:21,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504334522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:21,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:21,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:36:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10881924] [2022-11-19 07:36:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:21,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:36:21,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:21,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:36:21,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:36:21,051 INFO L87 Difference]: Start difference. First operand 2124 states and 3846 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 07:36:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:21,818 INFO L93 Difference]: Finished difference Result 2868 states and 4744 transitions. [2022-11-19 07:36:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:36:21,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2022-11-19 07:36:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:21,837 INFO L225 Difference]: With dead ends: 2868 [2022-11-19 07:36:21,851 INFO L226 Difference]: Without dead ends: 2618 [2022-11-19 07:36:21,853 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 [2022-11-19 07:36:21,854 INFO L413 NwaCegarLoop]: 3195 mSDtfsCounter, 3404 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3404 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:21,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3404 Valid, 6353 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:36:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-11-19 07:36:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2422. [2022-11-19 07:36:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2196 states have (on average 1.7950819672131149) internal successors, (3942), 2202 states have internal predecessors, (3942), 133 states have call successors, (133), 92 states have call predecessors, (133), 91 states have return successors, (131), 128 states have call predecessors, (131), 131 states have call successors, (131) [2022-11-19 07:36:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 4206 transitions. [2022-11-19 07:36:22,010 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 4206 transitions. Word has length 90 [2022-11-19 07:36:22,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:22,010 INFO L495 AbstractCegarLoop]: Abstraction has 2422 states and 4206 transitions. [2022-11-19 07:36:22,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 07:36:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 4206 transitions. [2022-11-19 07:36:22,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 07:36:22,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:22,014 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:22,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:36:22,014 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:22,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:22,015 INFO L85 PathProgramCache]: Analyzing trace with hash -520437671, now seen corresponding path program 1 times [2022-11-19 07:36:22,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:22,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040566233] [2022-11-19 07:36:22,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:22,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:36:22,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:36:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:36:22,094 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:36:22,095 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:36:22,096 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-19 07:36:22,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-19 07:36:22,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:36:22,101 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:22,106 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:36:22,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:36:22 BoogieIcfgContainer [2022-11-19 07:36:22,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:36:22,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:36:22,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:36:22,220 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:36:22,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:11" (3/4) ... [2022-11-19 07:36:22,223 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:36:22,341 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:36:22,342 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:36:22,342 INFO L158 Benchmark]: Toolchain (without parser) took 27327.98ms. Allocated memory was 127.9MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 89.0MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 480.9MB. Max. memory is 16.1GB. [2022-11-19 07:36:22,342 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:36:22,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4117.41ms. Allocated memory was 127.9MB in the beginning and 192.9MB in the end (delta: 65.0MB). Free memory was 89.0MB in the beginning and 86.3MB in the end (delta: 2.6MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. [2022-11-19 07:36:22,344 INFO L158 Benchmark]: Boogie Procedure Inliner took 578.12ms. Allocated memory was 192.9MB in the beginning and 297.8MB in the end (delta: 104.9MB). Free memory was 86.3MB in the beginning and 157.6MB in the end (delta: -71.3MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2022-11-19 07:36:22,344 INFO L158 Benchmark]: Boogie Preprocessor took 628.20ms. Allocated memory is still 297.8MB. Free memory was 157.6MB in the beginning and 132.7MB in the end (delta: 24.9MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2022-11-19 07:36:22,344 INFO L158 Benchmark]: RCFGBuilder took 10918.22ms. Allocated memory was 297.8MB in the beginning and 920.6MB in the end (delta: 622.9MB). Free memory was 132.7MB in the beginning and 662.3MB in the end (delta: -529.7MB). Peak memory consumption was 545.3MB. Max. memory is 16.1GB. [2022-11-19 07:36:22,345 INFO L158 Benchmark]: TraceAbstraction took 10953.72ms. Allocated memory was 920.6MB in the beginning and 1.6GB in the end (delta: 710.9MB). Free memory was 662.3MB in the beginning and 1.1GB in the end (delta: -461.2MB). Peak memory consumption was 250.8MB. Max. memory is 16.1GB. [2022-11-19 07:36:22,346 INFO L158 Benchmark]: Witness Printer took 121.59ms. Allocated memory is still 1.6GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:36:22,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4117.41ms. Allocated memory was 127.9MB in the beginning and 192.9MB in the end (delta: 65.0MB). Free memory was 89.0MB in the beginning and 86.3MB in the end (delta: 2.6MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 578.12ms. Allocated memory was 192.9MB in the beginning and 297.8MB in the end (delta: 104.9MB). Free memory was 86.3MB in the beginning and 157.6MB in the end (delta: -71.3MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 628.20ms. Allocated memory is still 297.8MB. Free memory was 157.6MB in the beginning and 132.7MB in the end (delta: 24.9MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * RCFGBuilder took 10918.22ms. Allocated memory was 297.8MB in the beginning and 920.6MB in the end (delta: 622.9MB). Free memory was 132.7MB in the beginning and 662.3MB in the end (delta: -529.7MB). Peak memory consumption was 545.3MB. Max. memory is 16.1GB. * TraceAbstraction took 10953.72ms. Allocated memory was 920.6MB in the beginning and 1.6GB in the end (delta: 710.9MB). Free memory was 662.3MB in the beginning and 1.1GB in the end (delta: -461.2MB). Peak memory consumption was 250.8MB. Max. memory is 16.1GB. * Witness Printer took 121.59ms. Allocated memory is still 1.6GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11179] int m_st ; [L45] int a12 = 4; [L44] int a15 = 1; [L11184] int T1_E = 2; [L43] int a16 = 1; [L11192] int local ; [L11178] int t1_pc = 0; [L11182] int t1_i ; [L11183] int M_E = 2; [L11185] int E_M = 2; [L11181] int m_i ; [L11180] int t1_st ; [L47] int a20 = 5; [L36] int a= 1; [L38] int b= 2; [L34] int c= 3; [L33] int d= 4; [L35] int e= 5; [L46] int a25 = 1; [L37] int f= 6; [L41] int a27 = 1; [L11190] int token ; [L42] int a2 = 10; [L11186] int E_1 = 2; [L11177] int m_pc = 0; [L40] int a9 = 18; [L11651] COND FALSE !(__VERIFIER_nondet_int()) [L11654] CALL main2() [L11638] int __retres1 ; [L11642] CALL init_model() [L11553] m_i = 1 [L11554] t1_i = 1 [L11642] RET init_model() [L11643] CALL start_simulation() [L11579] int kernel_st ; [L11580] int tmp ; [L11581] int tmp___0 ; [L11585] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11586] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11587] CALL init_threads() [L11335] COND TRUE m_i == 1 [L11336] m_st = 0 [L11340] COND TRUE t1_i == 1 [L11341] t1_st = 0 [L11587] RET init_threads() [L11588] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11424] COND FALSE !(M_E == 0) [L11429] COND FALSE !(T1_E == 0) [L11434] COND FALSE !(E_M == 0) [L11439] COND FALSE !(E_1 == 0) [L11588] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11589] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11299] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11308] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11318] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) [L11589] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11590] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11452] COND FALSE !(M_E == 1) [L11457] COND FALSE !(T1_E == 1) [L11462] COND FALSE !(E_M == 1) [L11467] COND FALSE !(E_1 == 1) [L11590] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11593] COND TRUE 1 [L11596] kernel_st = 1 [L11597] CALL eval() [L11371] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11375] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11378] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, token=0] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE \read(tmp_ndt_2) [L11404] t1_st = 1 [L11405] CALL transmit1() [L11253] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, token=0] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 [L11405] RET transmit1() [L11375] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L11378] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE \read(tmp_ndt_1) [L11390] m_st = 1 [L11391] CALL master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L11208] COND TRUE 1 [L11211] token = __VERIFIER_nondet_int() [L11212] local = token [L11213] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L11214] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11506] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11299] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11308] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11309] COND TRUE E_1 == 1 [L11310] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND TRUE \read(tmp___0) [L11493] t1_st = 0 [L11506] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, token=0] [L11214] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=0] [L11215] E_1 = 2 [L11216] m_pc = 1 [L11217] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=0] [L11391] RET master() [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE \read(tmp_ndt_2) [L11404] t1_st = 1 [L11405] CALL transmit1() [L11253] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L11256] COND TRUE t1_pc == 1 [L11272] token += 1 [L11273] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11274] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11506] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11289] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11290] COND TRUE E_M == 1 [L11291] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND TRUE \read(tmp) [L11485] m_st = 0 [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11308] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11309] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11318] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) [L11506] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11274] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11275] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 [L11405] RET transmit1() [L11375] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L11378] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE \read(tmp_ndt_1) [L11390] m_st = 1 [L11391] CALL master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11200] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11222] COND FALSE !(token != local + 1) [L11227] COND TRUE tmp_var <= 5 [L11228] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11233] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11234] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11235] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11236] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] - UnprovableResult [Line: 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, 1716 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17129 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17119 mSDsluCounter, 53584 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25102 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4204 IncrementalHoareTripleChecker+Invalid, 4318 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 28482 mSDtfsCounter, 4204 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 414 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2422occurred in iteration=9, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 436 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1124 NumberOfCodeBlocks, 1124 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1018 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1553 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 488/531 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-19 07:36:22,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05f6695c-214d-47af-98ee-114dde8fd872/bin/utaipan-I9t0OCRTmS/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