./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW --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 7ec37a095871269c822e7d35e6d840f2de134a68f657807281a5c0e96980df26 --- 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-4e7fbc6 [2022-11-23 15:44:53,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:44:53,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:44:53,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:44:53,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:44:53,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:44:53,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:44:53,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:44:53,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:44:53,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:44:53,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:44:53,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:44:53,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:44:53,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:44:53,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:44:53,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:44:53,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:44:53,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:44:53,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:44:53,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:44:53,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:44:53,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:44:53,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:44:53,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:44:53,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:44:53,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:44:53,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:44:53,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:44:53,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:44:53,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:44:53,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:44:53,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:44:53,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:44:53,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:44:53,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:44:53,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:44:53,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:44:53,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:44:53,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:44:53,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:44:53,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:44:53,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:44:53,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:44:53,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:44:53,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:44:53,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:44:53,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:44:53,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:44:53,453 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:44:53,453 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:44:53,453 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:44:53,454 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:44:53,455 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:44:53,455 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:44:53,455 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:44:53,456 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:44:53,456 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:44:53,456 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:44:53,457 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:44:53,457 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:44:53,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:44:53,458 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:44:53,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:44:53,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:44:53,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:44:53,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:44:53,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:44:53,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:44:53,461 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:44:53,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:44:53,461 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:44:53,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:44:53,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:44:53,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:44:53,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:44:53,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:44:53,463 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:44:53,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:44:53,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:44:53,464 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:44:53,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:44:53,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:44:53,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:44:53,465 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_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ec37a095871269c822e7d35e6d840f2de134a68f657807281a5c0e96980df26 [2022-11-23 15:44:53,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:44:53,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:44:53,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:44:53,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:44:53,856 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:44:53,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c [2022-11-23 15:44:56,943 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:44:57,701 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:44:57,702 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c [2022-11-23 15:44:57,742 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/data/92dee8032/3a0acf0d224e42beadbf829d0ba3d409/FLAG954f19d8f [2022-11-23 15:44:57,756 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/data/92dee8032/3a0acf0d224e42beadbf829d0ba3d409 [2022-11-23 15:44:57,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:44:57,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:44:57,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:44:57,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:44:57,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:44:57,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:44:57" (1/1) ... [2022-11-23 15:44:57,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d94f410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:57, skipping insertion in model container [2022-11-23 15:44:57,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:44:57" (1/1) ... [2022-11-23 15:44:57,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:44:58,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:45:00,536 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[380323,380336] [2022-11-23 15:45:00,568 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[383339,383352] [2022-11-23 15:45:00,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:00,851 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:45:02,251 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[380323,380336] [2022-11-23 15:45:02,259 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[383339,383352] [2022-11-23 15:45:02,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:02,356 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:45:02,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02 WrapperNode [2022-11-23 15:45:02,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:02,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:02,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:45:02,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:45:02,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:02,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:02,931 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12682 [2022-11-23 15:45:02,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:02,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:45:02,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:45:02,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:45:02,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:02,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:03,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:03,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:03,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:03,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:03,598 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:03,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:03,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:45:03,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:45:03,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:45:03,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:45:03,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (1/1) ... [2022-11-23 15:45:03,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:03,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:03,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:45:03,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:45:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:45:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 15:45:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 15:45:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 15:45:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 15:45:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 15:45:03,774 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 15:45:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-23 15:45:03,774 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-23 15:45:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 15:45:03,774 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 15:45:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 15:45:03,775 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 15:45:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 15:45:03,775 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 15:45:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:45:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:45:03,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:45:03,891 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:45:03,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:45:13,880 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:45:16,136 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:45:16,137 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-23 15:45:16,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:16 BoogieIcfgContainer [2022-11-23 15:45:16,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:45:16,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:45:16,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:45:16,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:45:16,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:44:57" (1/3) ... [2022-11-23 15:45:16,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a23ef27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:16, skipping insertion in model container [2022-11-23 15:45:16,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:02" (2/3) ... [2022-11-23 15:45:16,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a23ef27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:16, skipping insertion in model container [2022-11-23 15:45:16,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:16" (3/3) ... [2022-11-23 15:45:16,148 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.03.cil-1.c [2022-11-23 15:45:16,168 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:45:16,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:45:16,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:45:16,271 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;@e4feeae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:45:16,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:45:16,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 1738 states, 1709 states have (on average 1.9748390871854886) internal successors, (3375), 1714 states have internal predecessors, (3375), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-23 15:45:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-23 15:45:16,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:16,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:16,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:16,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:16,306 INFO L85 PathProgramCache]: Analyzing trace with hash -554508062, now seen corresponding path program 1 times [2022-11-23 15:45:16,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:16,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156021852] [2022-11-23 15:45:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:16,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:16,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:16,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156021852] [2022-11-23 15:45:16,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156021852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:16,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:16,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:45:16,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022521321] [2022-11-23 15:45:16,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:16,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:16,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:16,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:16,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:16,724 INFO L87 Difference]: Start difference. First operand has 1738 states, 1709 states have (on average 1.9748390871854886) internal successors, (3375), 1714 states have internal predecessors, (3375), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:45:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:17,802 INFO L93 Difference]: Finished difference Result 3547 states and 6943 transitions. [2022-11-23 15:45:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:45:17,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2022-11-23 15:45:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:17,824 INFO L225 Difference]: With dead ends: 3547 [2022-11-23 15:45:17,824 INFO L226 Difference]: Without dead ends: 1808 [2022-11-23 15:45:17,831 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 [2022-11-23 15:45:17,834 INFO L413 NwaCegarLoop]: 3248 mSDtfsCounter, 3490 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 6432 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:17,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3490 Valid, 6432 Invalid, 600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:45:17,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-11-23 15:45:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1807. [2022-11-23 15:45:17,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1761 states have (on average 1.9522998296422487) internal successors, (3438), 1765 states have internal predecessors, (3438), 32 states have call successors, (32), 13 states have call predecessors, (32), 12 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-23 15:45:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3500 transitions. [2022-11-23 15:45:17,951 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3500 transitions. Word has length 41 [2022-11-23 15:45:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:17,952 INFO L495 AbstractCegarLoop]: Abstraction has 1807 states and 3500 transitions. [2022-11-23 15:45:17,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:45:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3500 transitions. [2022-11-23 15:45:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:45:17,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:17,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:17,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:45:17,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:17,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash -604417362, now seen corresponding path program 1 times [2022-11-23 15:45:17,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:17,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216062042] [2022-11-23 15:45:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:17,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:45:18,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:18,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216062042] [2022-11-23 15:45:18,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216062042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:18,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924667147] [2022-11-23 15:45:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:18,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:18,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:18,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:18,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:45:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:18,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:45:18,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:45:18,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:18,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924667147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:18,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:18,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 15:45:18,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292418913] [2022-11-23 15:45:18,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:18,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:18,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:18,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:18,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:18,532 INFO L87 Difference]: Start difference. First operand 1807 states and 3500 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:45:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:19,056 INFO L93 Difference]: Finished difference Result 2122 states and 3949 transitions. [2022-11-23 15:45:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:19,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-11-23 15:45:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:19,074 INFO L225 Difference]: With dead ends: 2122 [2022-11-23 15:45:19,075 INFO L226 Difference]: Without dead ends: 1961 [2022-11-23 15:45:19,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:19,078 INFO L413 NwaCegarLoop]: 3204 mSDtfsCounter, 3374 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:19,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3374 Valid, 3301 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:45:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2022-11-23 15:45:19,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1955. [2022-11-23 15:45:19,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1873 states have (on average 1.9183128670581955) internal successors, (3593), 1878 states have internal predecessors, (3593), 56 states have call successors, (56), 25 states have call predecessors, (56), 24 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-23 15:45:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3703 transitions. [2022-11-23 15:45:19,153 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3703 transitions. Word has length 74 [2022-11-23 15:45:19,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:19,154 INFO L495 AbstractCegarLoop]: Abstraction has 1955 states and 3703 transitions. [2022-11-23 15:45:19,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:45:19,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3703 transitions. [2022-11-23 15:45:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:45:19,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:19,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:19,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:19,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:19,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:19,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2036667664, now seen corresponding path program 1 times [2022-11-23 15:45:19,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:19,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819742262] [2022-11-23 15:45:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:19,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:45:19,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:19,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819742262] [2022-11-23 15:45:19,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819742262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:19,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566116382] [2022-11-23 15:45:19,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:19,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:19,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:19,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:45:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:19,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:45:19,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:45:19,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:19,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566116382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:19,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:19,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 15:45:19,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68144142] [2022-11-23 15:45:19,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:19,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:19,797 INFO L87 Difference]: Start difference. First operand 1955 states and 3703 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:45:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:20,356 INFO L93 Difference]: Finished difference Result 2560 states and 4558 transitions. [2022-11-23 15:45:20,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:20,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-11-23 15:45:20,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:20,382 INFO L225 Difference]: With dead ends: 2560 [2022-11-23 15:45:20,383 INFO L226 Difference]: Without dead ends: 2251 [2022-11-23 15:45:20,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:20,388 INFO L413 NwaCegarLoop]: 3173 mSDtfsCounter, 3371 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3371 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:20,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3371 Valid, 3270 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:45:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2022-11-23 15:45:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2243. [2022-11-23 15:45:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2091 states have (on average 1.860832137733142) internal successors, (3891), 2098 states have internal predecessors, (3891), 102 states have call successors, (102), 49 states have call predecessors, (102), 48 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-23 15:45:20,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4093 transitions. [2022-11-23 15:45:20,479 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4093 transitions. Word has length 74 [2022-11-23 15:45:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:20,479 INFO L495 AbstractCegarLoop]: Abstraction has 2243 states and 4093 transitions. [2022-11-23 15:45:20,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:45:20,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4093 transitions. [2022-11-23 15:45:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:45:20,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:20,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:20,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:20,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:20,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:20,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:20,690 INFO L85 PathProgramCache]: Analyzing trace with hash 770705902, now seen corresponding path program 1 times [2022-11-23 15:45:20,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:20,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566168169] [2022-11-23 15:45:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:45:21,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:21,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566168169] [2022-11-23 15:45:21,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566168169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:21,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:21,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:45:21,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118793909] [2022-11-23 15:45:21,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:21,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:45:21,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:45:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:21,280 INFO L87 Difference]: Start difference. First operand 2243 states and 4093 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-23 15:45:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:22,638 INFO L93 Difference]: Finished difference Result 3547 states and 5884 transitions. [2022-11-23 15:45:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:45:22,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2022-11-23 15:45:22,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:22,663 INFO L225 Difference]: With dead ends: 3547 [2022-11-23 15:45:22,664 INFO L226 Difference]: Without dead ends: 2951 [2022-11-23 15:45:22,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:45:22,673 INFO L413 NwaCegarLoop]: 3177 mSDtfsCounter, 3612 mSDsluCounter, 9400 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3624 SdHoareTripleChecker+Valid, 12577 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:22,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3624 Valid, 12577 Invalid, 1161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 15:45:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2022-11-23 15:45:22,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2787. [2022-11-23 15:45:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2499 states have (on average 1.776310524209684) internal successors, (4439), 2510 states have internal predecessors, (4439), 190 states have call successors, (190), 97 states have call predecessors, (190), 96 states have return successors, (188), 180 states have call predecessors, (188), 188 states have call successors, (188) [2022-11-23 15:45:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4817 transitions. [2022-11-23 15:45:22,858 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4817 transitions. Word has length 74 [2022-11-23 15:45:22,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:22,859 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4817 transitions. [2022-11-23 15:45:22,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-23 15:45:22,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4817 transitions. [2022-11-23 15:45:22,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 15:45:22,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:22,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:22,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:45:22,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash -534618991, now seen corresponding path program 1 times [2022-11-23 15:45:22,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:22,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791615952] [2022-11-23 15:45:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:45:23,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:23,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791615952] [2022-11-23 15:45:23,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791615952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:23,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765385087] [2022-11-23 15:45:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:23,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:23,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:23,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:23,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:45:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:23,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:45:23,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:45:23,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:23,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765385087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:23,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:23,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 15:45:23,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246553402] [2022-11-23 15:45:23,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:23,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:23,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:23,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:23,372 INFO L87 Difference]: Start difference. First operand 2787 states and 4817 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:45:24,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:24,074 INFO L93 Difference]: Finished difference Result 3674 states and 6046 transitions. [2022-11-23 15:45:24,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:24,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-11-23 15:45:24,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:24,092 INFO L225 Difference]: With dead ends: 3674 [2022-11-23 15:45:24,092 INFO L226 Difference]: Without dead ends: 3070 [2022-11-23 15:45:24,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:24,096 INFO L413 NwaCegarLoop]: 3211 mSDtfsCounter, 44 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:24,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 6376 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:45:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2022-11-23 15:45:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2939. [2022-11-23 15:45:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2635 states have (on average 1.7666034155597723) internal successors, (4655), 2646 states have internal predecessors, (4655), 198 states have call successors, (198), 105 states have call predecessors, (198), 104 states have return successors, (196), 188 states have call predecessors, (196), 196 states have call successors, (196) [2022-11-23 15:45:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 5049 transitions. [2022-11-23 15:45:24,256 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 5049 transitions. Word has length 87 [2022-11-23 15:45:24,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:24,257 INFO L495 AbstractCegarLoop]: Abstraction has 2939 states and 5049 transitions. [2022-11-23 15:45:24,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:45:24,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 5049 transitions. [2022-11-23 15:45:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-23 15:45:24,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:24,268 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:24,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:24,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:24,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2134626193, now seen corresponding path program 1 times [2022-11-23 15:45:24,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:24,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523402090] [2022-11-23 15:45:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:24,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 15:45:24,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:24,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523402090] [2022-11-23 15:45:24,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523402090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:24,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:24,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:45:24,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190263070] [2022-11-23 15:45:24,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:24,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:24,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:24,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:24,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:45:24,589 INFO L87 Difference]: Start difference. First operand 2939 states and 5049 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:45:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:25,215 INFO L93 Difference]: Finished difference Result 4876 states and 7734 transitions. [2022-11-23 15:45:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 97 [2022-11-23 15:45:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:25,236 INFO L225 Difference]: With dead ends: 4876 [2022-11-23 15:45:25,236 INFO L226 Difference]: Without dead ends: 3583 [2022-11-23 15:45:25,241 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 [2022-11-23 15:45:25,243 INFO L413 NwaCegarLoop]: 3204 mSDtfsCounter, 3367 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:25,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 3301 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:45:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2022-11-23 15:45:25,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3567. [2022-11-23 15:45:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3567 states, 3119 states have (on average 1.7015068932350113) internal successors, (5307), 3134 states have internal predecessors, (5307), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2022-11-23 15:45:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3567 states to 3567 states and 5885 transitions. [2022-11-23 15:45:25,436 INFO L78 Accepts]: Start accepts. Automaton has 3567 states and 5885 transitions. Word has length 97 [2022-11-23 15:45:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:25,436 INFO L495 AbstractCegarLoop]: Abstraction has 3567 states and 5885 transitions. [2022-11-23 15:45:25,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:45:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states and 5885 transitions. [2022-11-23 15:45:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 15:45:25,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:25,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:25,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:45:25,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:25,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:25,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1770730894, now seen corresponding path program 1 times [2022-11-23 15:45:25,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:25,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986380593] [2022-11-23 15:45:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:25,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 15:45:25,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:25,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986380593] [2022-11-23 15:45:25,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986380593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:25,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468724977] [2022-11-23 15:45:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:25,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:25,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:25,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:25,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:45:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:25,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:25,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:45:25,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:25,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468724977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:25,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:25,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 15:45:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580128866] [2022-11-23 15:45:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:25,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:25,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:25,916 INFO L87 Difference]: Start difference. First operand 3567 states and 5885 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:45:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:26,818 INFO L93 Difference]: Finished difference Result 4871 states and 7755 transitions. [2022-11-23 15:45:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:26,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2022-11-23 15:45:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:26,838 INFO L225 Difference]: With dead ends: 4871 [2022-11-23 15:45:26,838 INFO L226 Difference]: Without dead ends: 3579 [2022-11-23 15:45:26,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:26,845 INFO L413 NwaCegarLoop]: 3224 mSDtfsCounter, 99 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 6378 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:26,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 6378 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:45:26,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2022-11-23 15:45:27,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3559. [2022-11-23 15:45:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3559 states, 3111 states have (on average 1.6904532304725168) internal successors, (5259), 3126 states have internal predecessors, (5259), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2022-11-23 15:45:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 5837 transitions. [2022-11-23 15:45:27,083 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 5837 transitions. Word has length 110 [2022-11-23 15:45:27,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:27,084 INFO L495 AbstractCegarLoop]: Abstraction has 3559 states and 5837 transitions. [2022-11-23 15:45:27,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:45:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 5837 transitions. [2022-11-23 15:45:27,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 15:45:27,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:27,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:27,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:27,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 15:45:27,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:27,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1278783220, now seen corresponding path program 1 times [2022-11-23 15:45:27,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:27,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571461799] [2022-11-23 15:45:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 15:45:27,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:27,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571461799] [2022-11-23 15:45:27,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571461799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:27,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138708997] [2022-11-23 15:45:27,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:27,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:27,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:27,651 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:27,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:45:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:27,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:45:27,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:45:27,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:27,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138708997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:27,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:27,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 15:45:27,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414377866] [2022-11-23 15:45:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:27,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:27,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:27,890 INFO L87 Difference]: Start difference. First operand 3559 states and 5837 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:28,664 INFO L93 Difference]: Finished difference Result 5287 states and 8126 transitions. [2022-11-23 15:45:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:28,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2022-11-23 15:45:28,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:28,690 INFO L225 Difference]: With dead ends: 5287 [2022-11-23 15:45:28,690 INFO L226 Difference]: Without dead ends: 4007 [2022-11-23 15:45:28,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:28,697 INFO L413 NwaCegarLoop]: 3174 mSDtfsCounter, 3377 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:28,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3377 Valid, 3198 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:45:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2022-11-23 15:45:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 4007. [2022-11-23 15:45:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 3495 states have (on average 1.6317596566523604) internal successors, (5703), 3510 states have internal predecessors, (5703), 310 states have call successors, (310), 201 states have call predecessors, (310), 200 states have return successors, (308), 296 states have call predecessors, (308), 308 states have call successors, (308) [2022-11-23 15:45:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 6321 transitions. [2022-11-23 15:45:28,971 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 6321 transitions. Word has length 110 [2022-11-23 15:45:28,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:28,971 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 6321 transitions. [2022-11-23 15:45:28,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 6321 transitions. [2022-11-23 15:45:28,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 15:45:28,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:28,981 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:28,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:29,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:29,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash 168817909, now seen corresponding path program 1 times [2022-11-23 15:45:29,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:29,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485313034] [2022-11-23 15:45:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:29,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 15:45:29,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:29,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485313034] [2022-11-23 15:45:29,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485313034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:29,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44660169] [2022-11-23 15:45:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:29,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:29,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:29,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:29,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:45:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:29,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:29,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:45:29,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:29,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44660169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:29,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:29,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 15:45:29,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918122499] [2022-11-23 15:45:29,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:29,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:29,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:29,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:29,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:29,685 INFO L87 Difference]: Start difference. First operand 4007 states and 6321 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:30,578 INFO L93 Difference]: Finished difference Result 7199 states and 10524 transitions. [2022-11-23 15:45:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:30,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2022-11-23 15:45:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:30,606 INFO L225 Difference]: With dead ends: 7199 [2022-11-23 15:45:30,606 INFO L226 Difference]: Without dead ends: 4839 [2022-11-23 15:45:30,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:30,615 INFO L413 NwaCegarLoop]: 3183 mSDtfsCounter, 57 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:30,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6333 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:45:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2022-11-23 15:45:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4235. [2022-11-23 15:45:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 3695 states have (on average 1.6267929634641407) internal successors, (6011), 3711 states have internal predecessors, (6011), 324 states have call successors, (324), 215 states have call predecessors, (324), 214 states have return successors, (322), 309 states have call predecessors, (322), 322 states have call successors, (322) [2022-11-23 15:45:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 6657 transitions. [2022-11-23 15:45:30,858 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 6657 transitions. Word has length 111 [2022-11-23 15:45:30,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:30,859 INFO L495 AbstractCegarLoop]: Abstraction has 4235 states and 6657 transitions. [2022-11-23 15:45:30,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 6657 transitions. [2022-11-23 15:45:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 15:45:30,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:30,866 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:30,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:31,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:31,073 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:31,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:31,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1838717512, now seen corresponding path program 1 times [2022-11-23 15:45:31,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:31,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592599859] [2022-11-23 15:45:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:31,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-23 15:45:31,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:31,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592599859] [2022-11-23 15:45:31,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592599859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:31,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443232462] [2022-11-23 15:45:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:31,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:31,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:31,179 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:31,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:45:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:31,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:45:31,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:45:31,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:31,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443232462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:31,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:31,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-23 15:45:31,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847825856] [2022-11-23 15:45:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:31,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:31,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:31,361 INFO L87 Difference]: Start difference. First operand 4235 states and 6657 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:45:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:32,042 INFO L93 Difference]: Finished difference Result 6519 states and 9705 transitions. [2022-11-23 15:45:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:32,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-11-23 15:45:32,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:32,062 INFO L225 Difference]: With dead ends: 6519 [2022-11-23 15:45:32,062 INFO L226 Difference]: Without dead ends: 4793 [2022-11-23 15:45:32,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:32,069 INFO L413 NwaCegarLoop]: 3212 mSDtfsCounter, 60 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 6378 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:32,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 6378 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:45:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2022-11-23 15:45:32,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4515. [2022-11-23 15:45:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4515 states, 3943 states have (on average 1.623890438752219) internal successors, (6403), 3959 states have internal predecessors, (6403), 340 states have call successors, (340), 231 states have call predecessors, (340), 230 states have return successors, (338), 325 states have call predecessors, (338), 338 states have call successors, (338) [2022-11-23 15:45:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4515 states to 4515 states and 7081 transitions. [2022-11-23 15:45:32,318 INFO L78 Accepts]: Start accepts. Automaton has 4515 states and 7081 transitions. Word has length 111 [2022-11-23 15:45:32,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:32,318 INFO L495 AbstractCegarLoop]: Abstraction has 4515 states and 7081 transitions. [2022-11-23 15:45:32,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:45:32,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4515 states and 7081 transitions. [2022-11-23 15:45:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 15:45:32,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:32,329 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:32,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:32,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:45:32,536 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:32,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1313014030, now seen corresponding path program 1 times [2022-11-23 15:45:32,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:32,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363586841] [2022-11-23 15:45:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:32,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-23 15:45:32,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:32,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363586841] [2022-11-23 15:45:32,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363586841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:32,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656309001] [2022-11-23 15:45:32,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:32,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:32,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:32,759 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:32,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:45:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:32,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:45:32,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:45:32,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:32,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656309001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:32,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:32,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-23 15:45:32,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681779315] [2022-11-23 15:45:32,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:32,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:32,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:32,953 INFO L87 Difference]: Start difference. First operand 4515 states and 7081 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:45:33,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:33,731 INFO L93 Difference]: Finished difference Result 6981 states and 10437 transitions. [2022-11-23 15:45:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:33,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-11-23 15:45:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:33,754 INFO L225 Difference]: With dead ends: 6981 [2022-11-23 15:45:33,754 INFO L226 Difference]: Without dead ends: 5503 [2022-11-23 15:45:33,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:33,761 INFO L413 NwaCegarLoop]: 3230 mSDtfsCounter, 65 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6396 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:33,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6396 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:45:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2022-11-23 15:45:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 4995. [2022-11-23 15:45:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4995 states, 4359 states have (on average 1.6102317045193852) internal successors, (7019), 4375 states have internal predecessors, (7019), 372 states have call successors, (372), 263 states have call predecessors, (372), 262 states have return successors, (370), 357 states have call predecessors, (370), 370 states have call successors, (370) [2022-11-23 15:45:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4995 states to 4995 states and 7761 transitions. [2022-11-23 15:45:34,063 INFO L78 Accepts]: Start accepts. Automaton has 4995 states and 7761 transitions. Word has length 112 [2022-11-23 15:45:34,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:34,064 INFO L495 AbstractCegarLoop]: Abstraction has 4995 states and 7761 transitions. [2022-11-23 15:45:34,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:45:34,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4995 states and 7761 transitions. [2022-11-23 15:45:34,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 15:45:34,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:34,074 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:34,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:34,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 15:45:34,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash 255681219, now seen corresponding path program 1 times [2022-11-23 15:45:34,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:34,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276050949] [2022-11-23 15:45:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-23 15:45:34,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:34,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276050949] [2022-11-23 15:45:34,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276050949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:34,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133816935] [2022-11-23 15:45:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:34,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:34,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:34,414 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:34,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 15:45:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:34,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:45:34,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:45:34,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:34,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133816935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:34,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:34,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-23 15:45:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729265013] [2022-11-23 15:45:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:34,650 INFO L87 Difference]: Start difference. First operand 4995 states and 7761 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:45:35,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:35,546 INFO L93 Difference]: Finished difference Result 7977 states and 11825 transitions. [2022-11-23 15:45:35,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:35,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-11-23 15:45:35,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:35,570 INFO L225 Difference]: With dead ends: 7977 [2022-11-23 15:45:35,570 INFO L226 Difference]: Without dead ends: 6251 [2022-11-23 15:45:35,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:35,578 INFO L413 NwaCegarLoop]: 3235 mSDtfsCounter, 71 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 6401 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:35,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 6401 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:45:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2022-11-23 15:45:35,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 5659. [2022-11-23 15:45:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5659 states, 4927 states have (on average 1.5894053176375076) internal successors, (7831), 4943 states have internal predecessors, (7831), 420 states have call successors, (420), 311 states have call predecessors, (420), 310 states have return successors, (418), 405 states have call predecessors, (418), 418 states have call successors, (418) [2022-11-23 15:45:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5659 states to 5659 states and 8669 transitions. [2022-11-23 15:45:35,950 INFO L78 Accepts]: Start accepts. Automaton has 5659 states and 8669 transitions. Word has length 112 [2022-11-23 15:45:35,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:35,951 INFO L495 AbstractCegarLoop]: Abstraction has 5659 states and 8669 transitions. [2022-11-23 15:45:35,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:45:35,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5659 states and 8669 transitions. [2022-11-23 15:45:35,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 15:45:36,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:36,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:36,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:36,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:36,237 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:36,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash 703746860, now seen corresponding path program 1 times [2022-11-23 15:45:36,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:36,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797802117] [2022-11-23 15:45:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:36,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 15:45:36,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:36,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797802117] [2022-11-23 15:45:36,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797802117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:36,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654653195] [2022-11-23 15:45:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:36,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:36,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:36,525 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:36,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 15:45:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:36,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:45:36,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 15:45:36,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:36,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654653195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:36,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:36,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2022-11-23 15:45:36,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081288459] [2022-11-23 15:45:36,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:36,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:45:36,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:36,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:45:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:36,831 INFO L87 Difference]: Start difference. First operand 5659 states and 8669 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:45:38,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:38,312 INFO L93 Difference]: Finished difference Result 11169 states and 16023 transitions. [2022-11-23 15:45:38,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:45:38,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 112 [2022-11-23 15:45:38,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:38,343 INFO L225 Difference]: With dead ends: 11169 [2022-11-23 15:45:38,344 INFO L226 Difference]: Without dead ends: 7157 [2022-11-23 15:45:38,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:45:38,356 INFO L413 NwaCegarLoop]: 3178 mSDtfsCounter, 3576 mSDsluCounter, 6284 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3588 SdHoareTripleChecker+Valid, 9462 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:38,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3588 Valid, 9462 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:45:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2022-11-23 15:45:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7153. [2022-11-23 15:45:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7153 states, 6119 states have (on average 1.5275371792776598) internal successors, (9347), 6141 states have internal predecessors, (9347), 594 states have call successors, (594), 439 states have call predecessors, (594), 438 states have return successors, (592), 573 states have call predecessors, (592), 592 states have call successors, (592) [2022-11-23 15:45:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 10533 transitions. [2022-11-23 15:45:38,830 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 10533 transitions. Word has length 112 [2022-11-23 15:45:38,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:38,831 INFO L495 AbstractCegarLoop]: Abstraction has 7153 states and 10533 transitions. [2022-11-23 15:45:38,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:45:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 10533 transitions. [2022-11-23 15:45:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 15:45:38,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:38,845 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:38,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:39,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:39,052 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:39,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:39,052 INFO L85 PathProgramCache]: Analyzing trace with hash 573759670, now seen corresponding path program 1 times [2022-11-23 15:45:39,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:39,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350179773] [2022-11-23 15:45:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:39,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 15:45:39,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:39,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350179773] [2022-11-23 15:45:39,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350179773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:39,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861359981] [2022-11-23 15:45:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:39,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:39,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:39,293 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:39,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 15:45:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:39,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:45:39,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 15:45:39,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:39,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861359981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:39,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:39,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2022-11-23 15:45:39,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031228087] [2022-11-23 15:45:39,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:39,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:45:39,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:39,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:45:39,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:39,541 INFO L87 Difference]: Start difference. First operand 7153 states and 10533 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:45:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:41,512 INFO L93 Difference]: Finished difference Result 14750 states and 20484 transitions. [2022-11-23 15:45:41,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:45:41,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 113 [2022-11-23 15:45:41,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:41,551 INFO L225 Difference]: With dead ends: 14750 [2022-11-23 15:45:41,551 INFO L226 Difference]: Without dead ends: 9244 [2022-11-23 15:45:41,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:45:41,569 INFO L413 NwaCegarLoop]: 3170 mSDtfsCounter, 3586 mSDsluCounter, 6279 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3598 SdHoareTripleChecker+Valid, 9449 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:41,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3598 Valid, 9449 Invalid, 893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:45:41,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2022-11-23 15:45:42,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 9240. [2022-11-23 15:45:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9240 states, 7776 states have (on average 1.4681069958847737) internal successors, (11416), 7807 states have internal predecessors, (11416), 842 states have call successors, (842), 621 states have call predecessors, (842), 620 states have return successors, (840), 812 states have call predecessors, (840), 840 states have call successors, (840) [2022-11-23 15:45:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9240 states to 9240 states and 13098 transitions. [2022-11-23 15:45:42,328 INFO L78 Accepts]: Start accepts. Automaton has 9240 states and 13098 transitions. Word has length 113 [2022-11-23 15:45:42,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:42,328 INFO L495 AbstractCegarLoop]: Abstraction has 9240 states and 13098 transitions. [2022-11-23 15:45:42,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:45:42,329 INFO L276 IsEmpty]: Start isEmpty. Operand 9240 states and 13098 transitions. [2022-11-23 15:45:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 15:45:42,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:42,346 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:42,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:42,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 15:45:42,553 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -408692205, now seen corresponding path program 1 times [2022-11-23 15:45:42,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:42,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028750909] [2022-11-23 15:45:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:42,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:45:42,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:42,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028750909] [2022-11-23 15:45:42,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028750909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:42,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313468712] [2022-11-23 15:45:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:42,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:42,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:42,821 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:42,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 15:45:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:43,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:45:43,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 15:45:43,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:43,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313468712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:43,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:43,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-23 15:45:43,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000825753] [2022-11-23 15:45:43,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:43,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:43,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:43,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:43,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:43,038 INFO L87 Difference]: Start difference. First operand 9240 states and 13098 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 15:45:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:44,326 INFO L93 Difference]: Finished difference Result 12457 states and 17284 transitions. [2022-11-23 15:45:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:45:44,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2022-11-23 15:45:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:44,366 INFO L225 Difference]: With dead ends: 12457 [2022-11-23 15:45:44,366 INFO L226 Difference]: Without dead ends: 9712 [2022-11-23 15:45:44,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:44,378 INFO L413 NwaCegarLoop]: 3234 mSDtfsCounter, 3381 mSDsluCounter, 3323 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 6557 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:44,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3381 Valid, 6557 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:45:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2022-11-23 15:45:45,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 9482. [2022-11-23 15:45:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9482 states, 7971 states have (on average 1.4629281144147535) internal successors, (11661), 8020 states have internal predecessors, (11661), 849 states have call successors, (849), 625 states have call predecessors, (849), 660 states have return successors, (883), 837 states have call predecessors, (883), 847 states have call successors, (883) [2022-11-23 15:45:45,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9482 states to 9482 states and 13393 transitions. [2022-11-23 15:45:45,126 INFO L78 Accepts]: Start accepts. Automaton has 9482 states and 13393 transitions. Word has length 117 [2022-11-23 15:45:45,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:45,127 INFO L495 AbstractCegarLoop]: Abstraction has 9482 states and 13393 transitions. [2022-11-23 15:45:45,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 15:45:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 9482 states and 13393 transitions. [2022-11-23 15:45:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-23 15:45:45,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:45,142 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:45,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:45,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 15:45:45,349 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:45,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:45,350 INFO L85 PathProgramCache]: Analyzing trace with hash -237944294, now seen corresponding path program 1 times [2022-11-23 15:45:45,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:45,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537392634] [2022-11-23 15:45:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:45,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 15:45:45,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:45,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537392634] [2022-11-23 15:45:45,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537392634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:45,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243335412] [2022-11-23 15:45:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:45,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:45,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:45,416 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:45,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 15:45:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:45,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:45,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 15:45:45,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:45,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243335412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:45,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:45,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-23 15:45:45,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949226437] [2022-11-23 15:45:45,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:45,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:45,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:45,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:45,583 INFO L87 Difference]: Start difference. First operand 9482 states and 13393 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:46,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:46,582 INFO L93 Difference]: Finished difference Result 12293 states and 17122 transitions. [2022-11-23 15:45:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:46,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2022-11-23 15:45:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:46,623 INFO L225 Difference]: With dead ends: 12293 [2022-11-23 15:45:46,623 INFO L226 Difference]: Without dead ends: 9224 [2022-11-23 15:45:46,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:46,634 INFO L413 NwaCegarLoop]: 3176 mSDtfsCounter, 22 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6335 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:46,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 6335 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:45:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9224 states. [2022-11-23 15:45:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9224 to 8786. [2022-11-23 15:45:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8786 states, 7383 states have (on average 1.4758228362454286) internal successors, (10896), 7405 states have internal predecessors, (10896), 813 states have call successors, (813), 589 states have call predecessors, (813), 588 states have return successors, (811), 792 states have call predecessors, (811), 811 states have call successors, (811) [2022-11-23 15:45:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8786 states to 8786 states and 12520 transitions. [2022-11-23 15:45:47,230 INFO L78 Accepts]: Start accepts. Automaton has 8786 states and 12520 transitions. Word has length 118 [2022-11-23 15:45:47,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:47,230 INFO L495 AbstractCegarLoop]: Abstraction has 8786 states and 12520 transitions. [2022-11-23 15:45:47,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 8786 states and 12520 transitions. [2022-11-23 15:45:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-23 15:45:47,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:47,260 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:47,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:47,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 15:45:47,468 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:47,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:47,468 INFO L85 PathProgramCache]: Analyzing trace with hash -896277157, now seen corresponding path program 1 times [2022-11-23 15:45:47,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:47,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611843485] [2022-11-23 15:45:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:47,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-23 15:45:47,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:47,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611843485] [2022-11-23 15:45:47,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611843485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:47,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102924599] [2022-11-23 15:45:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:47,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:47,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:47,682 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:47,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 15:45:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:47,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:45:47,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:45:47,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:47,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102924599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:47,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:47,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-11-23 15:45:47,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934357069] [2022-11-23 15:45:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:47,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:47,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:47,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:47,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:47,917 INFO L87 Difference]: Start difference. First operand 8786 states and 12520 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:48,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:48,992 INFO L93 Difference]: Finished difference Result 14823 states and 20438 transitions. [2022-11-23 15:45:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:48,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2022-11-23 15:45:48,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:49,033 INFO L225 Difference]: With dead ends: 14823 [2022-11-23 15:45:49,033 INFO L226 Difference]: Without dead ends: 9813 [2022-11-23 15:45:49,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:49,049 INFO L413 NwaCegarLoop]: 3183 mSDtfsCounter, 3352 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:49,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3352 Valid, 3214 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:45:49,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9813 states. [2022-11-23 15:45:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9813 to 9721. [2022-11-23 15:45:49,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9721 states, 8243 states have (on average 1.4396457600388208) internal successors, (11867), 8265 states have internal predecessors, (11867), 823 states have call successors, (823), 654 states have call predecessors, (823), 653 states have return successors, (877), 802 states have call predecessors, (877), 821 states have call successors, (877) [2022-11-23 15:45:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9721 states to 9721 states and 13567 transitions. [2022-11-23 15:45:49,719 INFO L78 Accepts]: Start accepts. Automaton has 9721 states and 13567 transitions. Word has length 118 [2022-11-23 15:45:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:49,720 INFO L495 AbstractCegarLoop]: Abstraction has 9721 states and 13567 transitions. [2022-11-23 15:45:49,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 9721 states and 13567 transitions. [2022-11-23 15:45:49,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-23 15:45:49,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:49,736 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:49,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:49,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 15:45:49,943 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:49,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:49,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1723632955, now seen corresponding path program 1 times [2022-11-23 15:45:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:49,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241461960] [2022-11-23 15:45:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-23 15:45:50,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:50,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241461960] [2022-11-23 15:45:50,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241461960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:50,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654586043] [2022-11-23 15:45:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:50,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:50,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:50,007 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:50,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 15:45:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:50,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:50,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:45:50,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:50,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654586043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:50,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:45:50,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-23 15:45:50,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732908523] [2022-11-23 15:45:50,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:50,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:50,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:50,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:50,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:50,202 INFO L87 Difference]: Start difference. First operand 9721 states and 13567 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:45:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:51,769 INFO L93 Difference]: Finished difference Result 15347 states and 21023 transitions. [2022-11-23 15:45:51,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:51,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2022-11-23 15:45:51,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:51,802 INFO L225 Difference]: With dead ends: 15347 [2022-11-23 15:45:51,802 INFO L226 Difference]: Without dead ends: 9707 [2022-11-23 15:45:51,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:51,816 INFO L413 NwaCegarLoop]: 3241 mSDtfsCounter, 94 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:51,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 6394 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:45:51,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9707 states. [2022-11-23 15:45:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9707 to 9593. [2022-11-23 15:45:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9593 states, 8115 states have (on average 1.418977202711029) internal successors, (11515), 8137 states have internal predecessors, (11515), 823 states have call successors, (823), 654 states have call predecessors, (823), 653 states have return successors, (877), 802 states have call predecessors, (877), 821 states have call successors, (877) [2022-11-23 15:45:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 13215 transitions. [2022-11-23 15:45:52,505 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 13215 transitions. Word has length 118 [2022-11-23 15:45:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:52,506 INFO L495 AbstractCegarLoop]: Abstraction has 9593 states and 13215 transitions. [2022-11-23 15:45:52,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:45:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 13215 transitions. [2022-11-23 15:45:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 15:45:52,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:52,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:52,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-23 15:45:52,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 15:45:52,729 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:52,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:52,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1341455148, now seen corresponding path program 1 times [2022-11-23 15:45:52,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:52,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427788283] [2022-11-23 15:45:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:52,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 15:45:52,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:52,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427788283] [2022-11-23 15:45:52,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427788283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:52,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:52,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:45:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136493822] [2022-11-23 15:45:52,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:52,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:52,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:52,859 INFO L87 Difference]: Start difference. First operand 9593 states and 13215 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:54,251 INFO L93 Difference]: Finished difference Result 14593 states and 19514 transitions. [2022-11-23 15:45:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:45:54,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 115 [2022-11-23 15:45:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:54,283 INFO L225 Difference]: With dead ends: 14593 [2022-11-23 15:45:54,283 INFO L226 Difference]: Without dead ends: 10549 [2022-11-23 15:45:54,295 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 [2022-11-23 15:45:54,296 INFO L413 NwaCegarLoop]: 3203 mSDtfsCounter, 3377 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 6393 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:54,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3377 Valid, 6393 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:45:54,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10549 states. [2022-11-23 15:45:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10549 to 10336. [2022-11-23 15:45:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10336 states, 8810 states have (on average 1.3917139614074916) internal successors, (12261), 8832 states have internal predecessors, (12261), 829 states have call successors, (829), 696 states have call predecessors, (829), 695 states have return successors, (879), 808 states have call predecessors, (879), 827 states have call successors, (879) [2022-11-23 15:45:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10336 states to 10336 states and 13969 transitions. [2022-11-23 15:45:55,177 INFO L78 Accepts]: Start accepts. Automaton has 10336 states and 13969 transitions. Word has length 115 [2022-11-23 15:45:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:55,178 INFO L495 AbstractCegarLoop]: Abstraction has 10336 states and 13969 transitions. [2022-11-23 15:45:55,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 10336 states and 13969 transitions. [2022-11-23 15:45:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 15:45:55,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:55,195 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:55,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 15:45:55,195 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:55,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1506815488, now seen corresponding path program 1 times [2022-11-23 15:45:55,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:55,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196217755] [2022-11-23 15:45:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:55,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 15:45:55,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:55,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196217755] [2022-11-23 15:45:55,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196217755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:55,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:55,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:45:55,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033772349] [2022-11-23 15:45:55,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:55,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:45:55,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:45:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:45:55,407 INFO L87 Difference]: Start difference. First operand 10336 states and 13969 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:57,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:57,313 INFO L93 Difference]: Finished difference Result 18018 states and 23459 transitions. [2022-11-23 15:45:57,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:45:57,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2022-11-23 15:45:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:57,352 INFO L225 Difference]: With dead ends: 18018 [2022-11-23 15:45:57,352 INFO L226 Difference]: Without dead ends: 13546 [2022-11-23 15:45:57,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:45:57,366 INFO L413 NwaCegarLoop]: 3218 mSDtfsCounter, 104 mSDsluCounter, 6293 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 9511 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:57,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 9511 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 15:45:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13546 states. [2022-11-23 15:45:58,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13546 to 13066. [2022-11-23 15:45:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13066 states, 10962 states have (on average 1.353311439518336) internal successors, (14835), 11020 states have internal predecessors, (14835), 1145 states have call successors, (1145), 949 states have call predecessors, (1145), 957 states have return successors, (1275), 1097 states have call predecessors, (1275), 1143 states have call successors, (1275) [2022-11-23 15:45:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13066 states to 13066 states and 17255 transitions. [2022-11-23 15:45:58,587 INFO L78 Accepts]: Start accepts. Automaton has 13066 states and 17255 transitions. Word has length 116 [2022-11-23 15:45:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:58,587 INFO L495 AbstractCegarLoop]: Abstraction has 13066 states and 17255 transitions. [2022-11-23 15:45:58,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:45:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 13066 states and 17255 transitions. [2022-11-23 15:45:58,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 15:45:58,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:58,598 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:58,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 15:45:58,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:58,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1419528625, now seen corresponding path program 1 times [2022-11-23 15:45:58,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:58,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457322611] [2022-11-23 15:45:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:58,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 15:45:59,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:59,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457322611] [2022-11-23 15:45:59,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457322611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:59,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723545676] [2022-11-23 15:45:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:59,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:59,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:59,183 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:59,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 15:45:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:59,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 15:45:59,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:45:59,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:45:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-23 15:45:59,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723545676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:45:59,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2000787522] [2022-11-23 15:45:59,971 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-23 15:45:59,971 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:45:59,975 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:45:59,981 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:45:59,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:46:10,311 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 75 for LOIs [2022-11-23 15:46:10,317 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2022-11-23 15:46:13,005 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2022-11-23 15:46:13,052 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2022-11-23 15:46:13,072 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 71 for LOIs [2022-11-23 15:46:13,083 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 86 for LOIs [2022-11-23 15:46:13,381 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 131 for LOIs [2022-11-23 15:46:14,405 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:46:40,788 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '387894#(and (= ~a15~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (= |#NULL.base| 0))' at error location [2022-11-23 15:46:40,788 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:46:40,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:46:40,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 6] total 21 [2022-11-23 15:46:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580503189] [2022-11-23 15:46:40,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:46:40,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 15:46:40,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 15:46:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=4623, Unknown=0, NotChecked=0, Total=5112 [2022-11-23 15:46:40,791 INFO L87 Difference]: Start difference. First operand 13066 states and 17255 transitions. Second operand has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-11-23 15:46:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:46,001 INFO L93 Difference]: Finished difference Result 24294 states and 31582 transitions. [2022-11-23 15:46:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-23 15:46:46,001 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 121 [2022-11-23 15:46:46,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:46,028 INFO L225 Difference]: With dead ends: 24294 [2022-11-23 15:46:46,029 INFO L226 Difference]: Without dead ends: 12843 [2022-11-23 15:46:46,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 333 SyntacticMatches, 15 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8792 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=1374, Invalid=18086, Unknown=0, NotChecked=0, Total=19460 [2022-11-23 15:46:46,049 INFO L413 NwaCegarLoop]: 3289 mSDtfsCounter, 14839 mSDsluCounter, 29643 mSDsCounter, 0 mSdLazyCounter, 4331 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14850 SdHoareTripleChecker+Valid, 32932 SdHoareTripleChecker+Invalid, 4848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 4331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:46,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14850 Valid, 32932 Invalid, 4848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [517 Valid, 4331 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 15:46:46,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12843 states. [2022-11-23 15:46:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12843 to 9720. [2022-11-23 15:46:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9720 states, 8302 states have (on average 1.3986991086485183) internal successors, (11612), 8327 states have internal predecessors, (11612), 748 states have call successors, (748), 666 states have call predecessors, (748), 668 states have return successors, (794), 726 states have call predecessors, (794), 746 states have call successors, (794) [2022-11-23 15:46:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9720 states to 9720 states and 13154 transitions. [2022-11-23 15:46:46,909 INFO L78 Accepts]: Start accepts. Automaton has 9720 states and 13154 transitions. Word has length 121 [2022-11-23 15:46:46,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:46,909 INFO L495 AbstractCegarLoop]: Abstraction has 9720 states and 13154 transitions. [2022-11-23 15:46:46,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-11-23 15:46:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 9720 states and 13154 transitions. [2022-11-23 15:46:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 15:46:46,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:46,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:46:46,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 15:46:47,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:46:47,122 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:47,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash -978382447, now seen corresponding path program 1 times [2022-11-23 15:46:47,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:47,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495427578] [2022-11-23 15:46:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:47,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 15:46:47,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:47,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495427578] [2022-11-23 15:46:47,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495427578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:46:47,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235989020] [2022-11-23 15:46:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:47,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:46:47,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:46:47,312 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:46:47,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 15:46:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:47,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:46:47,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:46:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:46:47,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:46:47,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235989020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:46:47,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:46:47,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-11-23 15:46:47,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085735799] [2022-11-23 15:46:47,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:46:47,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:46:47,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:46:47,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:46:47,557 INFO L87 Difference]: Start difference. First operand 9720 states and 13154 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-23 15:46:49,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:49,337 INFO L93 Difference]: Finished difference Result 16949 states and 22056 transitions. [2022-11-23 15:46:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:46:49,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 117 [2022-11-23 15:46:49,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:49,355 INFO L225 Difference]: With dead ends: 16949 [2022-11-23 15:46:49,355 INFO L226 Difference]: Without dead ends: 11638 [2022-11-23 15:46:49,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:46:49,363 INFO L413 NwaCegarLoop]: 3222 mSDtfsCounter, 219 mSDsluCounter, 12500 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 15722 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:49,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 15722 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:46:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11638 states. [2022-11-23 15:46:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11638 to 10635. [2022-11-23 15:46:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10635 states, 9008 states have (on average 1.3769982238010656) internal successors, (12404), 9047 states have internal predecessors, (12404), 862 states have call successors, (862), 753 states have call predecessors, (862), 763 states have return successors, (964), 834 states have call predecessors, (964), 860 states have call successors, (964) [2022-11-23 15:46:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10635 states to 10635 states and 14230 transitions. [2022-11-23 15:46:50,320 INFO L78 Accepts]: Start accepts. Automaton has 10635 states and 14230 transitions. Word has length 117 [2022-11-23 15:46:50,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:50,320 INFO L495 AbstractCegarLoop]: Abstraction has 10635 states and 14230 transitions. [2022-11-23 15:46:50,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-23 15:46:50,321 INFO L276 IsEmpty]: Start isEmpty. Operand 10635 states and 14230 transitions. [2022-11-23 15:46:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-23 15:46:50,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:50,327 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:46:50,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 15:46:50,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-23 15:46:50,533 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:50,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1311080883, now seen corresponding path program 1 times [2022-11-23 15:46:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:50,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777811444] [2022-11-23 15:46:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:50,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-23 15:46:50,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:50,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777811444] [2022-11-23 15:46:50,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777811444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:46:50,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299374358] [2022-11-23 15:46:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:50,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:46:50,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:46:50,767 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:46:50,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 15:46:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:50,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 15:46:50,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:46:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:46:51,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:46:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-23 15:46:51,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299374358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:46:51,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2041401494] [2022-11-23 15:46:51,452 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-11-23 15:46:51,452 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:46:51,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:46:51,453 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:46:51,453 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:46:57,603 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 76 for LOIs [2022-11-23 15:46:57,607 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2022-11-23 15:47:02,434 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2022-11-23 15:47:02,500 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2022-11-23 15:47:02,528 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 72 for LOIs [2022-11-23 15:47:02,542 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 132 for LOIs [2022-11-23 15:47:02,830 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 120 for LOIs [2022-11-23 15:47:03,127 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:47:31,851 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '471008#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-23 15:47:31,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:47:31,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:47:31,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2022-11-23 15:47:31,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812071154] [2022-11-23 15:47:31,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:47:31,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 15:47:31,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 15:47:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=4665, Unknown=0, NotChecked=0, Total=5112 [2022-11-23 15:47:31,856 INFO L87 Difference]: Start difference. First operand 10635 states and 14230 transitions. Second operand has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-23 15:47:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:37,575 INFO L93 Difference]: Finished difference Result 19244 states and 25127 transitions. [2022-11-23 15:47:37,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-11-23 15:47:37,576 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 124 [2022-11-23 15:47:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:37,597 INFO L225 Difference]: With dead ends: 19244 [2022-11-23 15:47:37,597 INFO L226 Difference]: Without dead ends: 11153 [2022-11-23 15:47:37,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 352 SyntacticMatches, 16 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13853 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=2000, Invalid=28450, Unknown=0, NotChecked=0, Total=30450 [2022-11-23 15:47:37,614 INFO L413 NwaCegarLoop]: 3477 mSDtfsCounter, 11398 mSDsluCounter, 24815 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11405 SdHoareTripleChecker+Valid, 28292 SdHoareTripleChecker+Invalid, 4384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:37,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11405 Valid, 28292 Invalid, 4384 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 4010 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 15:47:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11153 states. [2022-11-23 15:47:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11153 to 8079. [2022-11-23 15:47:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8079 states, 6978 states have (on average 1.420464316423044) internal successors, (9912), 6995 states have internal predecessors, (9912), 566 states have call successors, (566), 529 states have call predecessors, (566), 533 states have return successors, (628), 554 states have call predecessors, (628), 564 states have call successors, (628) [2022-11-23 15:47:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 11106 transitions. [2022-11-23 15:47:38,601 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 11106 transitions. Word has length 124 [2022-11-23 15:47:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:38,602 INFO L495 AbstractCegarLoop]: Abstraction has 8079 states and 11106 transitions. [2022-11-23 15:47:38,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-23 15:47:38,602 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 11106 transitions. [2022-11-23 15:47:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-23 15:47:38,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:38,609 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:47:38,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 15:47:38,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-23 15:47:38,816 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:38,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:38,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1099183794, now seen corresponding path program 1 times [2022-11-23 15:47:38,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:38,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990083888] [2022-11-23 15:47:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:38,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 15:47:39,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990083888] [2022-11-23 15:47:39,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990083888] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:47:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727648156] [2022-11-23 15:47:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:39,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:47:39,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:47:39,063 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:47:39,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 15:47:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:39,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 15:47:39,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:47:39,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:47:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 15:47:39,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727648156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:47:39,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [722830771] [2022-11-23 15:47:39,772 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-23 15:47:39,772 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:47:39,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:47:39,773 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:47:39,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:47:46,067 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 77 for LOIs [2022-11-23 15:47:46,072 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2022-11-23 15:47:54,519 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2022-11-23 15:47:54,556 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2022-11-23 15:47:54,573 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 73 for LOIs [2022-11-23 15:47:54,591 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 90 for LOIs [2022-11-23 15:47:54,759 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-23 15:47:55,084 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:48:08,607 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 365 DAG size of output: 239 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:48:26,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '508290#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (<= ~t2_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-23 15:48:26,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:48:26,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:48:26,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 18 [2022-11-23 15:48:26,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356290846] [2022-11-23 15:48:26,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:48:26,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 15:48:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:26,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 15:48:26,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=5202, Unknown=0, NotChecked=0, Total=5700 [2022-11-23 15:48:26,406 INFO L87 Difference]: Start difference. First operand 8079 states and 11106 transitions. Second operand has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-23 15:48:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:32,498 INFO L93 Difference]: Finished difference Result 13899 states and 18254 transitions. [2022-11-23 15:48:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-11-23 15:48:32,499 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 126 [2022-11-23 15:48:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:32,514 INFO L225 Difference]: With dead ends: 13899 [2022-11-23 15:48:32,514 INFO L226 Difference]: Without dead ends: 8612 [2022-11-23 15:48:32,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 358 SyntacticMatches, 16 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17279 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=2363, Invalid=35467, Unknown=0, NotChecked=0, Total=37830 [2022-11-23 15:48:32,525 INFO L413 NwaCegarLoop]: 3402 mSDtfsCounter, 14713 mSDsluCounter, 23954 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14719 SdHoareTripleChecker+Valid, 27356 SdHoareTripleChecker+Invalid, 4150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:32,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14719 Valid, 27356 Invalid, 4150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [462 Valid, 3688 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 15:48:32,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8612 states. [2022-11-23 15:48:33,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8612 to 6838. [2022-11-23 15:48:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 5955 states have (on average 1.4408060453400504) internal successors, (8580), 5970 states have internal predecessors, (8580), 447 states have call successors, (447), 428 states have call predecessors, (447), 434 states have return successors, (503), 439 states have call predecessors, (503), 445 states have call successors, (503) [2022-11-23 15:48:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 9530 transitions. [2022-11-23 15:48:33,086 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 9530 transitions. Word has length 126 [2022-11-23 15:48:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:33,087 INFO L495 AbstractCegarLoop]: Abstraction has 6838 states and 9530 transitions. [2022-11-23 15:48:33,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-23 15:48:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 9530 transitions. [2022-11-23 15:48:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 15:48:33,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:33,091 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:48:33,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-23 15:48:33,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-23 15:48:33,291 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:33,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1091355996, now seen corresponding path program 1 times [2022-11-23 15:48:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:33,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426970684] [2022-11-23 15:48:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 23 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:48:33,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:33,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426970684] [2022-11-23 15:48:33,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426970684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:48:33,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430267849] [2022-11-23 15:48:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:33,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:33,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:48:33,988 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:48:33,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-23 15:48:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:34,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-23 15:48:34,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:48:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:48:34,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:48:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-23 15:48:35,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430267849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:48:35,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1983664727] [2022-11-23 15:48:35,282 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-11-23 15:48:35,282 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:48:35,283 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:48:35,283 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:48:35,283 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:48:50,515 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 78 for LOIs [2022-11-23 15:48:50,520 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 127 for LOIs [2022-11-23 15:48:50,553 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 240 for LOIs [2022-11-23 15:48:54,725 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 208 for LOIs [2022-11-23 15:48:54,783 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 123 for LOIs [2022-11-23 15:48:54,810 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 92 for LOIs [2022-11-23 15:48:55,019 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 121 for LOIs [2022-11-23 15:48:55,639 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:49:06,669 WARN L233 SmtUtils]: Spent 8.86s on a formula simplification. DAG size of input: 279 DAG size of output: 229 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:49:35,218 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '536346#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (<= ~t2_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (<= ~t3_pc~0 1) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (<= 0 ~t3_pc~0) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-23 15:49:35,218 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:49:35,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:49:35,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 36 [2022-11-23 15:49:35,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81161127] [2022-11-23 15:49:35,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:49:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-23 15:49:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:35,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-23 15:49:35,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=8809, Unknown=0, NotChecked=0, Total=9506 [2022-11-23 15:49:35,222 INFO L87 Difference]: Start difference. First operand 6838 states and 9530 transitions. Second operand has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2022-11-23 15:49:44,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:44,109 INFO L93 Difference]: Finished difference Result 14852 states and 19482 transitions. [2022-11-23 15:49:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-23 15:49:44,109 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) Word has length 128 [2022-11-23 15:49:44,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:44,127 INFO L225 Difference]: With dead ends: 14852 [2022-11-23 15:49:44,127 INFO L226 Difference]: Without dead ends: 10539 [2022-11-23 15:49:44,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 313 SyntacticMatches, 13 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10221 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=2367, Invalid=22439, Unknown=0, NotChecked=0, Total=24806 [2022-11-23 15:49:44,139 INFO L413 NwaCegarLoop]: 3130 mSDtfsCounter, 20668 mSDsluCounter, 37567 mSDsCounter, 0 mSdLazyCounter, 6283 mSolverCounterSat, 1766 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20668 SdHoareTripleChecker+Valid, 40697 SdHoareTripleChecker+Invalid, 8049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1766 IncrementalHoareTripleChecker+Valid, 6283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:44,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20668 Valid, 40697 Invalid, 8049 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1766 Valid, 6283 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 15:49:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10539 states. [2022-11-23 15:49:44,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10539 to 6549. [2022-11-23 15:49:44,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 5717 states have (on average 1.4483120517754067) internal successors, (8280), 5730 states have internal predecessors, (8280), 427 states have call successors, (427), 404 states have call predecessors, (427), 403 states have return successors, (425), 414 states have call predecessors, (425), 425 states have call successors, (425) [2022-11-23 15:49:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 9132 transitions. [2022-11-23 15:49:44,896 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 9132 transitions. Word has length 128 [2022-11-23 15:49:44,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:44,897 INFO L495 AbstractCegarLoop]: Abstraction has 6549 states and 9132 transitions. [2022-11-23 15:49:44,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2022-11-23 15:49:44,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 9132 transitions. [2022-11-23 15:49:44,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-23 15:49:44,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:44,901 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:44,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-23 15:49:45,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:49:45,108 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:45,108 INFO L85 PathProgramCache]: Analyzing trace with hash -164286274, now seen corresponding path program 1 times [2022-11-23 15:49:45,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:45,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101286454] [2022-11-23 15:49:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:45,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 31 proven. 19 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-23 15:49:45,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:45,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101286454] [2022-11-23 15:49:45,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101286454] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:49:45,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054075638] [2022-11-23 15:49:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:45,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:49:45,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:49:45,275 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:49:45,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-23 15:49:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:45,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:49:45,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:49:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-23 15:49:45,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:49:45,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054075638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:45,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:49:45,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-11-23 15:49:45,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483109488] [2022-11-23 15:49:45,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:45,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:49:45,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:49:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:49:45,504 INFO L87 Difference]: Start difference. First operand 6549 states and 9132 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:49:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:46,487 INFO L93 Difference]: Finished difference Result 11165 states and 14746 transitions. [2022-11-23 15:49:46,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:49:46,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 142 [2022-11-23 15:49:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:46,498 INFO L225 Difference]: With dead ends: 11165 [2022-11-23 15:49:46,498 INFO L226 Difference]: Without dead ends: 6837 [2022-11-23 15:49:46,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:49:46,504 INFO L413 NwaCegarLoop]: 3182 mSDtfsCounter, 3353 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:46,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 3211 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:49:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6837 states. [2022-11-23 15:49:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6837 to 6655. [2022-11-23 15:49:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6655 states, 5817 states have (on average 1.4321815368746778) internal successors, (8331), 5830 states have internal predecessors, (8331), 427 states have call successors, (427), 410 states have call predecessors, (427), 409 states have return successors, (435), 414 states have call predecessors, (435), 425 states have call successors, (435) [2022-11-23 15:49:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6655 states to 6655 states and 9193 transitions. [2022-11-23 15:49:47,252 INFO L78 Accepts]: Start accepts. Automaton has 6655 states and 9193 transitions. Word has length 142 [2022-11-23 15:49:47,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:47,252 INFO L495 AbstractCegarLoop]: Abstraction has 6655 states and 9193 transitions. [2022-11-23 15:49:47,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:49:47,252 INFO L276 IsEmpty]: Start isEmpty. Operand 6655 states and 9193 transitions. [2022-11-23 15:49:47,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-23 15:49:47,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:47,255 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:47,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-23 15:49:47,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-23 15:49:47,456 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:47,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1698966529, now seen corresponding path program 1 times [2022-11-23 15:49:47,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:47,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365855855] [2022-11-23 15:49:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:47,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-23 15:49:47,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:47,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365855855] [2022-11-23 15:49:47,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365855855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:49:47,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84969008] [2022-11-23 15:49:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:47,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:49:47,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:49:47,525 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:49:47,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 15:49:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:47,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:49:47,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:49:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-23 15:49:47,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:49:47,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84969008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:47,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:49:47,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-23 15:49:47,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389813958] [2022-11-23 15:49:47,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:47,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:49:47,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:49:47,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:49:47,725 INFO L87 Difference]: Start difference. First operand 6655 states and 9193 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:49:48,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:48,780 INFO L93 Difference]: Finished difference Result 10847 states and 14327 transitions. [2022-11-23 15:49:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:49:48,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 142 [2022-11-23 15:49:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:48,790 INFO L225 Difference]: With dead ends: 10847 [2022-11-23 15:49:48,790 INFO L226 Difference]: Without dead ends: 6410 [2022-11-23 15:49:48,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:49:48,799 INFO L413 NwaCegarLoop]: 3214 mSDtfsCounter, 93 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 6329 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:48,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 6329 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:49:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2022-11-23 15:49:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 6334. [2022-11-23 15:49:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6334 states, 5534 states have (on average 1.4110950487893026) internal successors, (7809), 5547 states have internal predecessors, (7809), 408 states have call successors, (408), 391 states have call predecessors, (408), 390 states have return successors, (416), 395 states have call predecessors, (416), 406 states have call successors, (416) [2022-11-23 15:49:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6334 states to 6334 states and 8633 transitions. [2022-11-23 15:49:49,343 INFO L78 Accepts]: Start accepts. Automaton has 6334 states and 8633 transitions. Word has length 142 [2022-11-23 15:49:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:49,343 INFO L495 AbstractCegarLoop]: Abstraction has 6334 states and 8633 transitions. [2022-11-23 15:49:49,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:49:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6334 states and 8633 transitions. [2022-11-23 15:49:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-23 15:49:49,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:49,348 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:49,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-23 15:49:49,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-23 15:49:49,554 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:49,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash 109391102, now seen corresponding path program 1 times [2022-11-23 15:49:49,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:49,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662026479] [2022-11-23 15:49:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:49,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-23 15:49:49,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:49,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662026479] [2022-11-23 15:49:49,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662026479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:49:49,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095441988] [2022-11-23 15:49:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:49,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:49:49,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:49:49,757 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:49:49,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-23 15:49:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:49,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:49:49,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:49:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:49:49,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:49:49,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095441988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:49,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:49:49,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-11-23 15:49:49,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370073219] [2022-11-23 15:49:49,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:49,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:49:49,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:49,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:49:49,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:49:49,994 INFO L87 Difference]: Start difference. First operand 6334 states and 8633 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-23 15:49:51,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:51,679 INFO L93 Difference]: Finished difference Result 11273 states and 14321 transitions. [2022-11-23 15:49:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:49:51,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 145 [2022-11-23 15:49:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:51,690 INFO L225 Difference]: With dead ends: 11273 [2022-11-23 15:49:51,690 INFO L226 Difference]: Without dead ends: 7253 [2022-11-23 15:49:51,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:49:51,694 INFO L413 NwaCegarLoop]: 3211 mSDtfsCounter, 235 mSDsluCounter, 9355 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 12566 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:51,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 12566 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 15:49:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2022-11-23 15:49:52,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 6800. [2022-11-23 15:49:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 5874 states have (on average 1.3859380320054477) internal successors, (8141), 5894 states have internal predecessors, (8141), 474 states have call successors, (474), 441 states have call predecessors, (474), 450 states have return successors, (522), 464 states have call predecessors, (522), 472 states have call successors, (522) [2022-11-23 15:49:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 9137 transitions. [2022-11-23 15:49:52,332 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 9137 transitions. Word has length 145 [2022-11-23 15:49:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:52,332 INFO L495 AbstractCegarLoop]: Abstraction has 6800 states and 9137 transitions. [2022-11-23 15:49:52,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-23 15:49:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 9137 transitions. [2022-11-23 15:49:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-23 15:49:52,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:52,336 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:52,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-23 15:49:52,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-23 15:49:52,536 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:52,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:52,537 INFO L85 PathProgramCache]: Analyzing trace with hash 506800388, now seen corresponding path program 1 times [2022-11-23 15:49:52,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:52,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343131205] [2022-11-23 15:49:52,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:52,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-11-23 15:49:52,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:52,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343131205] [2022-11-23 15:49:52,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343131205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:52,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:49:52,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:49:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905701062] [2022-11-23 15:49:52,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:52,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:49:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:52,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:49:52,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:49:52,872 INFO L87 Difference]: Start difference. First operand 6800 states and 9137 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-23 15:49:56,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:56,388 INFO L93 Difference]: Finished difference Result 19033 states and 23159 transitions. [2022-11-23 15:49:56,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:49:56,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 174 [2022-11-23 15:49:56,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:56,433 INFO L225 Difference]: With dead ends: 19033 [2022-11-23 15:49:56,433 INFO L226 Difference]: Without dead ends: 16437 [2022-11-23 15:49:56,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:49:56,445 INFO L413 NwaCegarLoop]: 3413 mSDtfsCounter, 3643 mSDsluCounter, 9949 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3643 SdHoareTripleChecker+Valid, 13362 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:56,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3643 Valid, 13362 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 15:49:56,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16437 states. [2022-11-23 15:49:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16437 to 10769. [2022-11-23 15:49:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10769 states, 9079 states have (on average 1.301354774754929) internal successors, (11815), 9109 states have internal predecessors, (11815), 875 states have call successors, (875), 795 states have call predecessors, (875), 813 states have return successors, (975), 864 states have call predecessors, (975), 873 states have call successors, (975) [2022-11-23 15:49:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10769 states to 10769 states and 13665 transitions. [2022-11-23 15:49:57,940 INFO L78 Accepts]: Start accepts. Automaton has 10769 states and 13665 transitions. Word has length 174 [2022-11-23 15:49:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:57,940 INFO L495 AbstractCegarLoop]: Abstraction has 10769 states and 13665 transitions. [2022-11-23 15:49:57,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-23 15:49:57,940 INFO L276 IsEmpty]: Start isEmpty. Operand 10769 states and 13665 transitions. [2022-11-23 15:49:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-23 15:49:57,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:57,948 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:57,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-23 15:49:57,948 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:57,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash 86183052, now seen corresponding path program 1 times [2022-11-23 15:49:57,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:57,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955395442] [2022-11-23 15:49:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:49:57,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:49:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:49:58,094 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:49:58,094 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:49:58,095 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-23 15:49:58,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-23 15:49:58,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-23 15:49:58,101 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:58,105 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:49:58,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:49:58 BoogieIcfgContainer [2022-11-23 15:49:58,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:49:58,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:49:58,316 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:49:58,317 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:49:58,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:16" (3/4) ... [2022-11-23 15:49:58,319 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 15:49:58,502 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:49:58,503 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:49:58,504 INFO L158 Benchmark]: Toolchain (without parser) took 300742.90ms. Allocated memory was 178.3MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 126.7MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2022-11-23 15:49:58,504 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 140.5MB. Free memory was 102.8MB in the beginning and 102.7MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:49:58,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4595.06ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 126.7MB in the beginning and 117.8MB in the end (delta: 8.9MB). Peak memory consumption was 132.4MB. Max. memory is 16.1GB. [2022-11-23 15:49:58,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 574.09ms. Allocated memory is still 243.3MB. Free memory was 117.8MB in the beginning and 99.2MB in the end (delta: 18.5MB). Peak memory consumption was 92.3MB. Max. memory is 16.1GB. [2022-11-23 15:49:58,509 INFO L158 Benchmark]: Boogie Preprocessor took 759.66ms. Allocated memory was 243.3MB in the beginning and 388.0MB in the end (delta: 144.7MB). Free memory was 99.2MB in the beginning and 217.4MB in the end (delta: -118.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2022-11-23 15:49:58,510 INFO L158 Benchmark]: RCFGBuilder took 12448.59ms. Allocated memory was 388.0MB in the beginning and 954.2MB in the end (delta: 566.2MB). Free memory was 217.4MB in the beginning and 359.8MB in the end (delta: -142.5MB). Peak memory consumption was 545.4MB. Max. memory is 16.1GB. [2022-11-23 15:49:58,510 INFO L158 Benchmark]: TraceAbstraction took 282172.77ms. Allocated memory was 954.2MB in the beginning and 3.0GB in the end (delta: 2.0GB). Free memory was 358.8MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 450.4MB. Max. memory is 16.1GB. [2022-11-23 15:49:58,515 INFO L158 Benchmark]: Witness Printer took 186.89ms. Allocated memory is still 3.0GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 15:49:58,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 140.5MB. Free memory was 102.8MB in the beginning and 102.7MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4595.06ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 126.7MB in the beginning and 117.8MB in the end (delta: 8.9MB). Peak memory consumption was 132.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 574.09ms. Allocated memory is still 243.3MB. Free memory was 117.8MB in the beginning and 99.2MB in the end (delta: 18.5MB). Peak memory consumption was 92.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 759.66ms. Allocated memory was 243.3MB in the beginning and 388.0MB in the end (delta: 144.7MB). Free memory was 99.2MB in the beginning and 217.4MB in the end (delta: -118.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * RCFGBuilder took 12448.59ms. Allocated memory was 388.0MB in the beginning and 954.2MB in the end (delta: 566.2MB). Free memory was 217.4MB in the beginning and 359.8MB in the end (delta: -142.5MB). Peak memory consumption was 545.4MB. Max. memory is 16.1GB. * TraceAbstraction took 282172.77ms. Allocated memory was 954.2MB in the beginning and 3.0GB in the end (delta: 2.0GB). Free memory was 358.8MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 450.4MB. Max. memory is 16.1GB. * Witness Printer took 186.89ms. Allocated memory is still 3.0GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int t2_pc = 0; [L11180] int t3_pc = 0; [L11181] int m_st ; [L11182] int t1_st ; [L11183] int t2_st ; [L11184] int t3_st ; [L11185] int m_i ; [L11186] int t1_i ; [L11187] int t2_i ; [L11188] int t3_i ; [L11189] int M_E = 2; [L11190] int T1_E = 2; [L11191] int T2_E = 2; [L11192] int T3_E = 2; [L11193] int E_M = 2; [L11194] int E_1 = 2; [L11195] int E_2 = 2; [L11196] int E_3 = 2; [L11202] int token ; [L11204] int local ; [L11901] COND FALSE !(__VERIFIER_nondet_int()) [L11904] CALL main2() [L11888] int __retres1 ; [L11892] CALL init_model() [L11801] m_i = 1 [L11802] t1_i = 1 [L11803] t2_i = 1 [L11804] t3_i = 1 [L11892] RET init_model() [L11893] CALL start_simulation() [L11829] int kernel_st ; [L11830] int tmp ; [L11831] int tmp___0 ; [L11835] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11836] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11837] CALL init_threads() [L11457] COND TRUE m_i == 1 [L11458] m_st = 0 [L11462] COND TRUE t1_i == 1 [L11463] t1_st = 0 [L11467] COND TRUE t2_i == 1 [L11468] t2_st = 0 [L11472] COND TRUE t3_i == 1 [L11473] t3_st = 0 [L11837] RET init_threads() [L11838] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11594] COND FALSE !(M_E == 0) [L11599] COND FALSE !(T1_E == 0) [L11604] COND FALSE !(T2_E == 0) [L11609] COND FALSE !(T3_E == 0) [L11614] COND FALSE !(E_M == 0) [L11619] COND FALSE !(E_1 == 0) [L11624] COND FALSE !(E_2 == 0) [L11629] COND FALSE !(E_3 == 0) [L11838] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11839] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11373] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11383] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11392] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11402] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11411] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11421] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11430] COND FALSE !(t3_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11440] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11839] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11840] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11642] COND FALSE !(M_E == 1) [L11647] COND FALSE !(T1_E == 1) [L11652] COND FALSE !(T2_E == 1) [L11657] COND FALSE !(T3_E == 1) [L11662] COND FALSE !(E_M == 1) [L11667] COND FALSE !(E_1 == 1) [L11672] COND FALSE !(E_2 == 1) [L11677] COND FALSE !(E_3 == 1) [L11840] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11843] COND TRUE 1 [L11846] kernel_st = 1 [L11847] CALL eval() [L11513] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, tmp=1, token=0] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11541] COND TRUE t1_st == 0 [L11542] int tmp_ndt_2; [L11543] tmp_ndt_2 = __VERIFIER_nondet_int() [L11544] COND TRUE \read(tmp_ndt_2) [L11546] t1_st = 1 [L11547] CALL transmit1() [L11265] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11276] COND TRUE 1 [L11278] t1_pc = 1 [L11279] t1_st = 2 [L11547] RET transmit1() [L11555] COND TRUE t2_st == 0 [L11556] int tmp_ndt_3; [L11557] tmp_ndt_3 = __VERIFIER_nondet_int() [L11558] COND TRUE \read(tmp_ndt_3) [L11560] t2_st = 1 [L11561] CALL transmit2() [L11301] COND TRUE t2_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11312] COND TRUE 1 [L11314] t2_pc = 1 [L11315] t2_st = 2 [L11561] RET transmit2() [L11569] COND TRUE t3_st == 0 [L11570] int tmp_ndt_4; [L11571] tmp_ndt_4 = __VERIFIER_nondet_int() [L11572] COND TRUE \read(tmp_ndt_4) [L11574] t3_st = 1 [L11575] CALL transmit3() [L11337] COND TRUE t3_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=0, t3_st=1, token=0] [L11348] COND TRUE 1 [L11350] t3_pc = 1 [L11351] t3_st = 2 [L11575] RET transmit3() [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND TRUE \read(tmp_ndt_1) [L11532] m_st = 1 [L11533] CALL master() [L11207] int tmp_var = __VERIFIER_nondet_int(); [L11209] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11220] COND TRUE 1 [L11223] token = __VERIFIER_nondet_int() [L11224] local = token [L11225] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11226] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11734] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11373] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11383] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11393] COND TRUE E_1 == 1 [L11394] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND TRUE \read(tmp___0) [L11705] t1_st = 0 [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11421] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11440] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11226] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11227] E_1 = 2 [L11228] m_pc = 1 [L11229] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11533] RET master() [L11541] COND TRUE t1_st == 0 [L11542] int tmp_ndt_2; [L11543] tmp_ndt_2 = __VERIFIER_nondet_int() [L11544] COND TRUE \read(tmp_ndt_2) [L11546] t1_st = 1 [L11547] CALL transmit1() [L11265] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11268] COND TRUE t1_pc == 1 [L11284] token += 1 [L11285] E_2 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11286] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11374] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11383] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11412] COND TRUE E_2 == 1 [L11413] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND TRUE \read(tmp___1) [L11713] t2_st = 0 [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11440] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11286] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11287] E_2 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11276] COND TRUE 1 [L11278] t1_pc = 1 [L11279] t1_st = 2 [L11547] RET transmit1() [L11555] COND TRUE t2_st == 0 [L11556] int tmp_ndt_3; [L11557] tmp_ndt_3 = __VERIFIER_nondet_int() [L11558] COND TRUE \read(tmp_ndt_3) [L11560] t2_st = 1 [L11561] CALL transmit2() [L11301] COND FALSE !(t2_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11304] COND TRUE t2_pc == 1 [L11320] token += 1 [L11321] E_3 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11322] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11374] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11383] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11421] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11431] COND TRUE E_3 == 1 [L11432] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND TRUE \read(tmp___2) [L11721] t3_st = 0 [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11322] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11323] E_3 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11312] COND TRUE 1 [L11314] t2_pc = 1 [L11315] t2_st = 2 [L11561] RET transmit2() [L11569] COND TRUE t3_st == 0 [L11570] int tmp_ndt_4; [L11571] tmp_ndt_4 = __VERIFIER_nondet_int() [L11572] COND TRUE \read(tmp_ndt_4) [L11574] t3_st = 1 [L11575] CALL transmit3() [L11337] COND FALSE !(t3_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=2] [L11340] COND TRUE t3_pc == 1 [L11356] token += 1 [L11357] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11358] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11374] COND TRUE E_M == 1 [L11375] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND TRUE \read(tmp) [L11697] m_st = 0 [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11421] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11440] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11358] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11359] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11348] COND TRUE 1 [L11350] t3_pc = 1 [L11351] t3_st = 2 [L11575] RET transmit3() [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND TRUE \read(tmp_ndt_1) [L11532] m_st = 1 [L11533] CALL master() [L11207] int tmp_var = __VERIFIER_nondet_int(); [L11209] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11212] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11234] COND FALSE !(token != local + 3) [L11239] COND TRUE tmp_var <= 5 [L11240] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11245] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11246] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11247] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11248] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] - UnprovableResult [Line: 11088]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1738 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 281.9s, OverallIterations: 30, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 57.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107735 SdHoareTripleChecker+Valid, 25.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107640 mSDsluCounter, 308123 SdHoareTripleChecker+Invalid, 21.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 214505 mSDsCounter, 3659 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33120 IncrementalHoareTripleChecker+Invalid, 36779 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3659 mSolverCounterUnsat, 93618 mSDtfsCounter, 33120 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4404 GetRequests, 3566 SyntacticMatches, 60 SemanticMatches, 778 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50189 ImplicationChecksByTransitivity, 136.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13066occurred in iteration=20, InterpolantAutomatonStates: 497, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.0s AutomataMinimizationTime, 29 MinimizatonAttempts, 23246 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 6078 NumberOfCodeBlocks, 6078 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 6344 ConstructedInterpolants, 0 QuantifiedInterpolants, 11583 SizeOfPredicates, 38 NumberOfNonLiveVariables, 13600 ConjunctsInSsa, 191 ConjunctsInUnsatCore, 56 InterpolantComputations, 25 PerfectInterpolantSequences, 3705/4211 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-23 15:49:58,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102a16c4-01ba-423b-a2ff-ccd0852d7eed/bin/utaipan-Q6hlc19bkW/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