./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/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_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/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_46650403-6113-4825-8b67-fcf0af6428a2/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 5d56dff15b0de2a89db18b71695d59ff3710bc2ebb344dc571e9d71343d9d530 --- 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 15:13:25,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:13:25,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:13:25,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:13:25,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:13:25,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:13:25,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:13:25,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:13:25,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:13:25,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:13:25,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:13:25,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:13:25,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:13:25,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:13:25,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:13:25,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:13:25,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:13:25,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:13:25,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:13:25,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:13:25,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:13:25,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:13:25,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:13:25,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:13:25,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:13:25,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:13:25,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:13:25,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:13:25,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:13:25,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:13:25,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:13:25,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:13:25,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:13:25,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:13:25,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:13:25,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:13:25,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:13:25,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:13:25,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:13:25,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:13:25,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:13:25,545 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:13:25,571 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:13:25,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:13:25,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:13:25,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:13:25,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:13:25,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:13:25,574 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:13:25,574 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:13:25,575 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:13:25,575 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:13:25,575 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:13:25,575 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:13:25,576 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:13:25,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:13:25,576 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:13:25,577 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:13:25,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:13:25,577 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:13:25,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:13:25,579 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:13:25,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:13:25,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:13:25,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:13:25,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:13:25,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:13:25,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:13:25,581 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:13:25,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:13:25,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:13:25,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:13:25,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:13:25,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:13:25,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:13:25,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:13:25,583 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:13:25,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:13:25,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:13:25,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:13:25,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:13:25,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:13:25,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:13:25,585 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_46650403-6113-4825-8b67-fcf0af6428a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d56dff15b0de2a89db18b71695d59ff3710bc2ebb344dc571e9d71343d9d530 [2022-11-23 15:13:25,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:13:25,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:13:25,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:13:25,986 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:13:25,987 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:13:25,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c [2022-11-23 15:13:29,420 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:13:30,253 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:13:30,253 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c [2022-11-23 15:13:30,300 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/data/90e536776/3a9f0be196d44c24b729589d25d683db/FLAG634573034 [2022-11-23 15:13:30,318 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/data/90e536776/3a9f0be196d44c24b729589d25d683db [2022-11-23 15:13:30,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:13:30,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:13:30,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:13:30,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:13:30,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:13:30,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:30" (1/1) ... [2022-11-23 15:13:30,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126b143b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:30, skipping insertion in model container [2022-11-23 15:13:30,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:30" (1/1) ... [2022-11-23 15:13:30,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:13:30,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:13:33,232 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_46650403-6113-4825-8b67-fcf0af6428a2/sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c[380323,380336] [2022-11-23 15:13:33,263 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_46650403-6113-4825-8b67-fcf0af6428a2/sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c[383339,383352] [2022-11-23 15:13:33,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:13:33,465 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:13:34,909 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_46650403-6113-4825-8b67-fcf0af6428a2/sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c[380323,380336] [2022-11-23 15:13:34,919 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_46650403-6113-4825-8b67-fcf0af6428a2/sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c[383339,383352] [2022-11-23 15:13:34,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:13:35,019 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:13:35,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35 WrapperNode [2022-11-23 15:13:35,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:13:35,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:13:35,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:13:35,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:13:35,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:35,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:35,715 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12624 [2022-11-23 15:13:35,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:13:35,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:13:35,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:13:35,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:13:35,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:35,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:35,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:35,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:36,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:36,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:36,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:36,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:36,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:13:36,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:13:36,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:13:36,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:13:36,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (1/1) ... [2022-11-23 15:13:36,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:13:36,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:36,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:13:36,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:13:36,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:13:36,565 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-23 15:13:36,565 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-23 15:13:36,566 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 15:13:36,566 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 15:13:36,566 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 15:13:36,566 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 15:13:36,567 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 15:13:36,567 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 15:13:36,567 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 15:13:36,567 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 15:13:36,567 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 15:13:36,568 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 15:13:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:13:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 15:13:36,568 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 15:13:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:13:36,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:13:36,757 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:13:36,777 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:13:46,604 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:13:49,356 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:13:49,356 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 15:13:49,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:49 BoogieIcfgContainer [2022-11-23 15:13:49,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:13:49,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:13:49,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:13:49,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:13:49,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:13:30" (1/3) ... [2022-11-23 15:13:49,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4139babe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:13:49, skipping insertion in model container [2022-11-23 15:13:49,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:35" (2/3) ... [2022-11-23 15:13:49,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4139babe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:13:49, skipping insertion in model container [2022-11-23 15:13:49,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:49" (3/3) ... [2022-11-23 15:13:49,375 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.02.cil-2.c [2022-11-23 15:13:49,396 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:13:49,397 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:13:49,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:13:49,518 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;@39613e5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:13:49,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:13:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 1727 states, 1699 states have (on average 1.9770453207769276) internal successors, (3359), 1704 states have internal predecessors, (3359), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-23 15:13:49,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 15:13:49,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:49,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:49,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:13:49,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2069298848, now seen corresponding path program 1 times [2022-11-23 15:13:49,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:49,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504724540] [2022-11-23 15:13:49,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:49,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:49,991 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 15:13:49,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:49,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504724540] [2022-11-23 15:13:49,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504724540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:49,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:13:49,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:13:49,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575884768] [2022-11-23 15:13:49,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:50,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:13:50,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:50,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:13:50,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:13:50,037 INFO L87 Difference]: Start difference. First operand has 1727 states, 1699 states have (on average 1.9770453207769276) internal successors, (3359), 1704 states have internal predecessors, (3359), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:13:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:51,086 INFO L93 Difference]: Finished difference Result 3514 states and 6887 transitions. [2022-11-23 15:13:51,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:13:51,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2022-11-23 15:13:51,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:51,113 INFO L225 Difference]: With dead ends: 3514 [2022-11-23 15:13:51,113 INFO L226 Difference]: Without dead ends: 1786 [2022-11-23 15:13:51,123 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 15:13:51,127 INFO L413 NwaCegarLoop]: 3218 mSDtfsCounter, 3457 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3457 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:51,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3457 Valid, 6376 Invalid, 584 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:13:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-11-23 15:13:51,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1785. [2022-11-23 15:13:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1741 states have (on average 1.9563469270534175) internal successors, (3406), 1745 states have internal predecessors, (3406), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-23 15:13:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 3464 transitions. [2022-11-23 15:13:51,281 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 3464 transitions. Word has length 38 [2022-11-23 15:13:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:51,282 INFO L495 AbstractCegarLoop]: Abstraction has 1785 states and 3464 transitions. [2022-11-23 15:13:51,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:13:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 3464 transitions. [2022-11-23 15:13:51,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 15:13:51,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:51,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:51,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:13:51,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:13:51,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:51,297 INFO L85 PathProgramCache]: Analyzing trace with hash -663308944, now seen corresponding path program 1 times [2022-11-23 15:13:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:51,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803573841] [2022-11-23 15:13:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:51,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:13:51,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:51,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803573841] [2022-11-23 15:13:51,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803573841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:13:51,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423602943] [2022-11-23 15:13:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:51,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:13:51,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:51,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:13:51,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:13:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:51,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:13:51,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:13:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:13:51,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:13:51,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423602943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:51,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:13:51,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 15:13:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20824710] [2022-11-23 15:13:51,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:51,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:13:51,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:51,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:13:51,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:13:51,771 INFO L87 Difference]: Start difference. First operand 1785 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:13:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:52,359 INFO L93 Difference]: Finished difference Result 2056 states and 3839 transitions. [2022-11-23 15:13:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:13:52,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-11-23 15:13:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:52,372 INFO L225 Difference]: With dead ends: 2056 [2022-11-23 15:13:52,372 INFO L226 Difference]: Without dead ends: 1917 [2022-11-23 15:13:52,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:13:52,376 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 3356 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:52,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3356 Valid, 3269 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:13:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2022-11-23 15:13:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1911. [2022-11-23 15:13:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1833 states have (on average 1.9252591380250954) internal successors, (3529), 1838 states have internal predecessors, (3529), 52 states have call successors, (52), 25 states have call predecessors, (52), 24 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-23 15:13:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 3631 transitions. [2022-11-23 15:13:52,544 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 3631 transitions. Word has length 67 [2022-11-23 15:13:52,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:52,545 INFO L495 AbstractCegarLoop]: Abstraction has 1911 states and 3631 transitions. [2022-11-23 15:13:52,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:13:52,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 3631 transitions. [2022-11-23 15:13:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 15:13:52,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:52,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:52,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:13:52,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 15:13:52,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:13:52,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1613665072, now seen corresponding path program 1 times [2022-11-23 15:13:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:52,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144749705] [2022-11-23 15:13:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 15:13:53,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:53,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144749705] [2022-11-23 15:13:53,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144749705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:53,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:13:53,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:13:53,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183031724] [2022-11-23 15:13:53,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:53,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:13:53,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:53,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:13:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:13:53,342 INFO L87 Difference]: Start difference. First operand 1911 states and 3631 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-23 15:13:54,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:54,437 INFO L93 Difference]: Finished difference Result 2467 states and 4380 transitions. [2022-11-23 15:13:54,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:13:54,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 67 [2022-11-23 15:13:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:54,450 INFO L225 Difference]: With dead ends: 2467 [2022-11-23 15:13:54,451 INFO L226 Difference]: Without dead ends: 2203 [2022-11-23 15:13:54,453 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 15:13:54,454 INFO L413 NwaCegarLoop]: 3162 mSDtfsCounter, 3535 mSDsluCounter, 6254 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3546 SdHoareTripleChecker+Valid, 9416 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:54,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3546 Valid, 9416 Invalid, 882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 15:13:54,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2022-11-23 15:13:54,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2147. [2022-11-23 15:13:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2003 states have (on average 1.872690963554668) internal successors, (3751), 2010 states have internal predecessors, (3751), 94 states have call successors, (94), 49 states have call predecessors, (94), 48 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-23 15:13:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3937 transitions. [2022-11-23 15:13:54,553 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3937 transitions. Word has length 67 [2022-11-23 15:13:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:54,554 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3937 transitions. [2022-11-23 15:13:54,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-23 15:13:54,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3937 transitions. [2022-11-23 15:13:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 15:13:54,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:54,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:54,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:13:54,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:13:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1513893631, now seen corresponding path program 1 times [2022-11-23 15:13:54,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:54,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975905602] [2022-11-23 15:13:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:54,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 15:13:54,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:54,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975905602] [2022-11-23 15:13:54,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975905602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:54,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:13:54,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:13:54,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423523094] [2022-11-23 15:13:54,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:54,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:13:54,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:54,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:13:54,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:13:54,667 INFO L87 Difference]: Start difference. First operand 2147 states and 3937 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:13:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:55,232 INFO L93 Difference]: Finished difference Result 2536 states and 4460 transitions. [2022-11-23 15:13:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:13:55,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-23 15:13:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:55,247 INFO L225 Difference]: With dead ends: 2536 [2022-11-23 15:13:55,247 INFO L226 Difference]: Without dead ends: 2268 [2022-11-23 15:13:55,249 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 15:13:55,253 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 36 mSDsluCounter, 3149 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:55,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 6336 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:13:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2022-11-23 15:13:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2205. [2022-11-23 15:13:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 2053 states have (on average 1.864101315148563) internal successors, (3827), 2060 states have internal predecessors, (3827), 98 states have call successors, (98), 53 states have call predecessors, (98), 52 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-23 15:13:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 4021 transitions. [2022-11-23 15:13:55,363 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 4021 transitions. Word has length 68 [2022-11-23 15:13:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:55,364 INFO L495 AbstractCegarLoop]: Abstraction has 2205 states and 4021 transitions. [2022-11-23 15:13:55,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:13:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 4021 transitions. [2022-11-23 15:13:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 15:13:55,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:55,370 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:55,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:13:55,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:13:55,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash 934667471, now seen corresponding path program 1 times [2022-11-23 15:13:55,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:55,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582641711] [2022-11-23 15:13:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:55,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 15:13:55,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:55,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582641711] [2022-11-23 15:13:55,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582641711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:55,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:13:55,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:13:55,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279934655] [2022-11-23 15:13:55,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:55,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:13:55,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:55,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:13:55,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:13:55,487 INFO L87 Difference]: Start difference. First operand 2205 states and 4021 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:13:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:56,047 INFO L93 Difference]: Finished difference Result 3043 states and 5150 transitions. [2022-11-23 15:13:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:13:56,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2022-11-23 15:13:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:56,059 INFO L225 Difference]: With dead ends: 3043 [2022-11-23 15:13:56,059 INFO L226 Difference]: Without dead ends: 2484 [2022-11-23 15:13:56,064 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 15:13:56,067 INFO L413 NwaCegarLoop]: 3188 mSDtfsCounter, 3349 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:56,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3349 Valid, 3270 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:13:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2022-11-23 15:13:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2022-11-23 15:13:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2252 states have (on average 1.813943161634103) internal successors, (4085), 2261 states have internal predecessors, (4085), 142 states have call successors, (142), 79 states have call predecessors, (142), 78 states have return successors, (140), 134 states have call predecessors, (140), 140 states have call successors, (140) [2022-11-23 15:13:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4367 transitions. [2022-11-23 15:13:56,179 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4367 transitions. Word has length 87 [2022-11-23 15:13:56,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:56,181 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 4367 transitions. [2022-11-23 15:13:56,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:13:56,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4367 transitions. [2022-11-23 15:13:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 15:13:56,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:56,187 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:56,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:13:56,188 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:13:56,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:56,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1788899467, now seen corresponding path program 1 times [2022-11-23 15:13:56,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:56,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964632648] [2022-11-23 15:13:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:56,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-23 15:13:56,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:56,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964632648] [2022-11-23 15:13:56,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964632648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:13:56,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510963615] [2022-11-23 15:13:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:56,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:13:56,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:56,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:13:56,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:13:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:56,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:13:56,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:13:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:13:56,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:13:56,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510963615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:56,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:13:56,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-23 15:13:56,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923991745] [2022-11-23 15:13:56,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:56,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:13:56,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:13:56,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:13:56,542 INFO L87 Difference]: Start difference. First operand 2474 states and 4367 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:13:57,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:57,107 INFO L93 Difference]: Finished difference Result 3213 states and 5363 transitions. [2022-11-23 15:13:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:13:57,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-11-23 15:13:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:57,120 INFO L225 Difference]: With dead ends: 3213 [2022-11-23 15:13:57,120 INFO L226 Difference]: Without dead ends: 2655 [2022-11-23 15:13:57,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:13:57,124 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 52 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6338 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:57,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 6338 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:13:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2022-11-23 15:13:57,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2553. [2022-11-23 15:13:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2319 states have (on average 1.8055196205260888) internal successors, (4187), 2328 states have internal predecessors, (4187), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-23 15:13:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4481 transitions. [2022-11-23 15:13:57,235 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4481 transitions. Word has length 99 [2022-11-23 15:13:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:57,235 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 4481 transitions. [2022-11-23 15:13:57,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:13:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4481 transitions. [2022-11-23 15:13:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 15:13:57,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:57,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:57,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:13:57,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 15:13:57,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:13:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1679988491, now seen corresponding path program 2 times [2022-11-23 15:13:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:57,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61747963] [2022-11-23 15:13:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 15:13:57,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:57,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61747963] [2022-11-23 15:13:57,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61747963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:13:57,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952470779] [2022-11-23 15:13:57,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:13:57,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:13:57,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:57,769 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:13:57,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:13:57,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 15:13:57,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:13:57,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:13:57,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:13:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:13:57,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:13:57,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952470779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:57,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:13:57,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 15:13:57,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856029733] [2022-11-23 15:13:57,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:57,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:13:57,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:13:57,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:13:57,956 INFO L87 Difference]: Start difference. First operand 2553 states and 4481 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:13:58,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:58,543 INFO L93 Difference]: Finished difference Result 3198 states and 5385 transitions. [2022-11-23 15:13:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:13:58,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-23 15:13:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:58,555 INFO L225 Difference]: With dead ends: 3198 [2022-11-23 15:13:58,556 INFO L226 Difference]: Without dead ends: 2561 [2022-11-23 15:13:58,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:13:58,559 INFO L413 NwaCegarLoop]: 3194 mSDtfsCounter, 92 mSDsluCounter, 3139 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:58,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6333 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:13:58,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2022-11-23 15:13:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2549. [2022-11-23 15:13:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2315 states have (on average 1.7982721382289417) internal successors, (4163), 2324 states have internal predecessors, (4163), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-23 15:13:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 4457 transitions. [2022-11-23 15:13:58,807 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 4457 transitions. Word has length 99 [2022-11-23 15:13:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:58,807 INFO L495 AbstractCegarLoop]: Abstraction has 2549 states and 4457 transitions. [2022-11-23 15:13:58,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:13:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 4457 transitions. [2022-11-23 15:13:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 15:13:58,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:58,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:58,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:13:59,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:13:59,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:13:59,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1685620309, now seen corresponding path program 1 times [2022-11-23 15:13:59,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:59,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074215825] [2022-11-23 15:13:59,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:59,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 15:13:59,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:59,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074215825] [2022-11-23 15:13:59,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074215825] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:13:59,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994232512] [2022-11-23 15:13:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:59,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:13:59,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:59,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:13:59,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:13:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:59,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:13:59,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:13:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-23 15:13:59,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:13:59,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994232512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:59,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:13:59,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 15:13:59,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756722682] [2022-11-23 15:13:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:59,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:13:59,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:13:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:13:59,542 INFO L87 Difference]: Start difference. First operand 2549 states and 4457 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:14:00,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:00,046 INFO L93 Difference]: Finished difference Result 3331 states and 5474 transitions. [2022-11-23 15:14:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:00,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-23 15:14:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:00,059 INFO L225 Difference]: With dead ends: 3331 [2022-11-23 15:14:00,059 INFO L226 Difference]: Without dead ends: 2725 [2022-11-23 15:14:00,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:14:00,064 INFO L413 NwaCegarLoop]: 3156 mSDtfsCounter, 3359 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:00,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 3175 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:14:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2022-11-23 15:14:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2725. [2022-11-23 15:14:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2463 states have (on average 1.7576126674786845) internal successors, (4329), 2472 states have internal predecessors, (4329), 156 states have call successors, (156), 105 states have call predecessors, (156), 104 states have return successors, (154), 148 states have call predecessors, (154), 154 states have call successors, (154) [2022-11-23 15:14:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 4639 transitions. [2022-11-23 15:14:00,193 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 4639 transitions. Word has length 99 [2022-11-23 15:14:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:00,195 INFO L495 AbstractCegarLoop]: Abstraction has 2725 states and 4639 transitions. [2022-11-23 15:14:00,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:14:00,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 4639 transitions. [2022-11-23 15:14:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 15:14:00,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:00,199 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:00,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:14:00,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:00,406 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:00,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1848697004, now seen corresponding path program 1 times [2022-11-23 15:14:00,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:00,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138922039] [2022-11-23 15:14:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:00,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 15:14:00,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:00,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138922039] [2022-11-23 15:14:00,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138922039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:00,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773676439] [2022-11-23 15:14:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:00,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:00,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:00,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:00,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:14:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:00,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:14:00,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:14:00,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:14:00,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773676439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:00,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:14:00,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 15:14:00,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468368268] [2022-11-23 15:14:00,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:00,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:00,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:00,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:14:00,883 INFO L87 Difference]: Start difference. First operand 2725 states and 4639 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:14:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:01,501 INFO L93 Difference]: Finished difference Result 4207 states and 6540 transitions. [2022-11-23 15:14:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:01,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-11-23 15:14:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:01,528 INFO L225 Difference]: With dead ends: 4207 [2022-11-23 15:14:01,528 INFO L226 Difference]: Without dead ends: 3129 [2022-11-23 15:14:01,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:14:01,534 INFO L413 NwaCegarLoop]: 3167 mSDtfsCounter, 48 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 6301 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:01,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 6301 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:14:01,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-11-23 15:14:01,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2841. [2022-11-23 15:14:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2559 states have (on average 1.7456037514654161) internal successors, (4467), 2569 states have internal predecessors, (4467), 166 states have call successors, (166), 115 states have call predecessors, (166), 114 states have return successors, (164), 157 states have call predecessors, (164), 164 states have call successors, (164) [2022-11-23 15:14:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4797 transitions. [2022-11-23 15:14:01,671 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4797 transitions. Word has length 100 [2022-11-23 15:14:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:01,671 INFO L495 AbstractCegarLoop]: Abstraction has 2841 states and 4797 transitions. [2022-11-23 15:14:01,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:14:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4797 transitions. [2022-11-23 15:14:01,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 15:14:01,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:01,678 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:01,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:14:01,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:01,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:01,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:01,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1329117843, now seen corresponding path program 1 times [2022-11-23 15:14:01,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:01,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346660745] [2022-11-23 15:14:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:01,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 15:14:01,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:01,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346660745] [2022-11-23 15:14:01,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346660745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:01,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475154970] [2022-11-23 15:14:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:01,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:01,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:01,975 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:01,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:14:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:02,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:14:02,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:14:02,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:14:02,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475154970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:02,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:14:02,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-23 15:14:02,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024251944] [2022-11-23 15:14:02,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:02,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:02,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:02,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:02,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:14:02,148 INFO L87 Difference]: Start difference. First operand 2841 states and 4797 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:14:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:02,843 INFO L93 Difference]: Finished difference Result 3881 states and 6149 transitions. [2022-11-23 15:14:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:02,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2022-11-23 15:14:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:02,856 INFO L225 Difference]: With dead ends: 3881 [2022-11-23 15:14:02,856 INFO L226 Difference]: Without dead ends: 3260 [2022-11-23 15:14:02,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:14:02,860 INFO L413 NwaCegarLoop]: 3206 mSDtfsCounter, 56 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6356 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:02,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6356 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:14:02,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-11-23 15:14:02,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3009. [2022-11-23 15:14:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 2695 states have (on average 1.72430426716141) internal successors, (4647), 2705 states have internal predecessors, (4647), 182 states have call successors, (182), 131 states have call predecessors, (182), 130 states have return successors, (180), 173 states have call predecessors, (180), 180 states have call successors, (180) [2022-11-23 15:14:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 5009 transitions. [2022-11-23 15:14:03,010 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 5009 transitions. Word has length 101 [2022-11-23 15:14:03,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:03,010 INFO L495 AbstractCegarLoop]: Abstraction has 3009 states and 5009 transitions. [2022-11-23 15:14:03,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:14:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 5009 transitions. [2022-11-23 15:14:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 15:14:03,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:03,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:03,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:14:03,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:14:03,222 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:03,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1548947729, now seen corresponding path program 1 times [2022-11-23 15:14:03,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:03,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854116378] [2022-11-23 15:14:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:03,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 15:14:03,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:03,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854116378] [2022-11-23 15:14:03,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854116378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:03,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630784547] [2022-11-23 15:14:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:03,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:03,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:03,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:03,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:14:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:03,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:14:03,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:14:03,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:14:03,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630784547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:03,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:14:03,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2022-11-23 15:14:03,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407050821] [2022-11-23 15:14:03,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:03,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:14:03,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:03,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:14:03,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:14:03,808 INFO L87 Difference]: Start difference. First operand 3009 states and 5009 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:14:04,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:04,891 INFO L93 Difference]: Finished difference Result 4904 states and 7404 transitions. [2022-11-23 15:14:04,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:14:04,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 101 [2022-11-23 15:14:04,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:04,913 INFO L225 Difference]: With dead ends: 4904 [2022-11-23 15:14:04,914 INFO L226 Difference]: Without dead ends: 3542 [2022-11-23 15:14:04,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:14:04,919 INFO L413 NwaCegarLoop]: 3163 mSDtfsCounter, 3501 mSDsluCounter, 6266 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 9429 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:04,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3512 Valid, 9429 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 15:14:04,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2022-11-23 15:14:05,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3538. [2022-11-23 15:14:05,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3096 states have (on average 1.6563307493540051) internal successors, (5128), 3109 states have internal predecessors, (5128), 256 states have call successors, (256), 185 states have call predecessors, (256), 184 states have return successors, (254), 244 states have call predecessors, (254), 254 states have call successors, (254) [2022-11-23 15:14:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5638 transitions. [2022-11-23 15:14:05,147 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5638 transitions. Word has length 101 [2022-11-23 15:14:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:05,147 INFO L495 AbstractCegarLoop]: Abstraction has 3538 states and 5638 transitions. [2022-11-23 15:14:05,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:14:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5638 transitions. [2022-11-23 15:14:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 15:14:05,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:05,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:05,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:14:05,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 15:14:05,358 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:05,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:05,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1348845533, now seen corresponding path program 1 times [2022-11-23 15:14:05,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:05,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895791997] [2022-11-23 15:14:05,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:05,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 15:14:06,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:06,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895791997] [2022-11-23 15:14:06,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895791997] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:06,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941821277] [2022-11-23 15:14:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:06,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:06,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:06,019 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:06,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:14:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:06,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:14:06,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:14:06,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:14:06,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941821277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:06,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:14:06,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-23 15:14:06,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532015426] [2022-11-23 15:14:06,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:06,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:14:06,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:06,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:14:06,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:14:06,403 INFO L87 Difference]: Start difference. First operand 3538 states and 5638 transitions. Second operand has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 15:14:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:07,667 INFO L93 Difference]: Finished difference Result 4977 states and 7487 transitions. [2022-11-23 15:14:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:14:07,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-11-23 15:14:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:07,680 INFO L225 Difference]: With dead ends: 4977 [2022-11-23 15:14:07,680 INFO L226 Difference]: Without dead ends: 3659 [2022-11-23 15:14:07,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:14:07,685 INFO L413 NwaCegarLoop]: 3116 mSDtfsCounter, 3387 mSDsluCounter, 9286 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3395 SdHoareTripleChecker+Valid, 12402 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:07,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3395 Valid, 12402 Invalid, 1126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 15:14:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2022-11-23 15:14:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3623. [2022-11-23 15:14:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 3171 states have (on average 1.6367076631977293) internal successors, (5190), 3184 states have internal predecessors, (5190), 258 states have call successors, (258), 193 states have call predecessors, (258), 192 states have return successors, (256), 246 states have call predecessors, (256), 256 states have call successors, (256) [2022-11-23 15:14:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5704 transitions. [2022-11-23 15:14:07,916 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5704 transitions. Word has length 102 [2022-11-23 15:14:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:07,916 INFO L495 AbstractCegarLoop]: Abstraction has 3623 states and 5704 transitions. [2022-11-23 15:14:07,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 15:14:07,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5704 transitions. [2022-11-23 15:14:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 15:14:07,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:07,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:07,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 15:14:08,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:08,129 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:08,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash -899746115, now seen corresponding path program 1 times [2022-11-23 15:14:08,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:08,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716814276] [2022-11-23 15:14:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:08,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-23 15:14:08,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:08,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716814276] [2022-11-23 15:14:08,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716814276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:08,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188637149] [2022-11-23 15:14:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:08,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:08,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:08,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:08,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 15:14:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:08,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:14:08,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:14:08,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:14:08,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188637149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:08,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:14:08,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-23 15:14:08,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630667310] [2022-11-23 15:14:08,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:08,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:08,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:08,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:08,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:14:08,486 INFO L87 Difference]: Start difference. First operand 3623 states and 5704 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:14:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:09,374 INFO L93 Difference]: Finished difference Result 5011 states and 7486 transitions. [2022-11-23 15:14:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:09,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2022-11-23 15:14:09,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:09,386 INFO L225 Difference]: With dead ends: 5011 [2022-11-23 15:14:09,387 INFO L226 Difference]: Without dead ends: 3633 [2022-11-23 15:14:09,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:14:09,393 INFO L413 NwaCegarLoop]: 3223 mSDtfsCounter, 79 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 6361 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:09,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 6361 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:14:09,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-11-23 15:14:09,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3603. [2022-11-23 15:14:09,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 3151 states have (on average 1.6217073944779434) internal successors, (5110), 3164 states have internal predecessors, (5110), 258 states have call successors, (258), 193 states have call predecessors, (258), 192 states have return successors, (256), 246 states have call predecessors, (256), 256 states have call successors, (256) [2022-11-23 15:14:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 5624 transitions. [2022-11-23 15:14:09,681 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 5624 transitions. Word has length 102 [2022-11-23 15:14:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:09,682 INFO L495 AbstractCegarLoop]: Abstraction has 3603 states and 5624 transitions. [2022-11-23 15:14:09,682 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 15:14:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 5624 transitions. [2022-11-23 15:14:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 15:14:09,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:09,688 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:09,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-23 15:14:09,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:09,895 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash -14759137, now seen corresponding path program 1 times [2022-11-23 15:14:09,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:09,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705967407] [2022-11-23 15:14:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:09,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 15:14:10,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:10,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705967407] [2022-11-23 15:14:10,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705967407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:10,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178134397] [2022-11-23 15:14:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:10,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:10,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:10,070 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:10,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 15:14:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:10,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:14:10,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 15:14:10,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:14:10,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178134397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:10,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:14:10,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-11-23 15:14:10,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829619312] [2022-11-23 15:14:10,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:10,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:14:10,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:10,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:14:10,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:14:10,393 INFO L87 Difference]: Start difference. First operand 3603 states and 5624 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-23 15:14:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:11,277 INFO L93 Difference]: Finished difference Result 5257 states and 7636 transitions. [2022-11-23 15:14:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:14:11,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 103 [2022-11-23 15:14:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:11,292 INFO L225 Difference]: With dead ends: 5257 [2022-11-23 15:14:11,292 INFO L226 Difference]: Without dead ends: 4239 [2022-11-23 15:14:11,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:14:11,298 INFO L413 NwaCegarLoop]: 3204 mSDtfsCounter, 3395 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3395 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:11,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3395 Valid, 3303 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:14:11,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2022-11-23 15:14:11,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3827. [2022-11-23 15:14:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 3356 states have (on average 1.58015494636472) internal successors, (5303), 3369 states have internal predecessors, (5303), 258 states have call successors, (258), 212 states have call predecessors, (258), 211 states have return successors, (268), 246 states have call predecessors, (268), 256 states have call successors, (268) [2022-11-23 15:14:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5829 transitions. [2022-11-23 15:14:11,638 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5829 transitions. Word has length 103 [2022-11-23 15:14:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:11,638 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5829 transitions. [2022-11-23 15:14:11,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-23 15:14:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5829 transitions. [2022-11-23 15:14:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-23 15:14:11,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:11,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:11,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:14:11,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 15:14:11,851 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:11,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:11,852 INFO L85 PathProgramCache]: Analyzing trace with hash -484329719, now seen corresponding path program 1 times [2022-11-23 15:14:11,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:11,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731624304] [2022-11-23 15:14:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:11,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:14:12,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:12,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731624304] [2022-11-23 15:14:12,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731624304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:12,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:12,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:14:12,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126277260] [2022-11-23 15:14:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:12,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:14:12,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:12,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:14:12,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:14:12,074 INFO L87 Difference]: Start difference. First operand 3827 states and 5829 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:14:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:13,437 INFO L93 Difference]: Finished difference Result 5705 states and 8066 transitions. [2022-11-23 15:14:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:14:13,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-11-23 15:14:13,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:13,453 INFO L225 Difference]: With dead ends: 5705 [2022-11-23 15:14:13,454 INFO L226 Difference]: Without dead ends: 4576 [2022-11-23 15:14:13,458 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 15:14:13,459 INFO L413 NwaCegarLoop]: 3192 mSDtfsCounter, 76 mSDsluCounter, 9387 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 12579 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:13,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 12579 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:14:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2022-11-23 15:14:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4477. [2022-11-23 15:14:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 3833 states have (on average 1.5246543177667624) internal successors, (5844), 3846 states have internal predecessors, (5844), 358 states have call successors, (358), 291 states have call predecessors, (358), 284 states have return successors, (386), 340 states have call predecessors, (386), 356 states have call successors, (386) [2022-11-23 15:14:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 6588 transitions. [2022-11-23 15:14:13,830 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 6588 transitions. Word has length 104 [2022-11-23 15:14:13,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:13,830 INFO L495 AbstractCegarLoop]: Abstraction has 4477 states and 6588 transitions. [2022-11-23 15:14:13,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 15:14:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 6588 transitions. [2022-11-23 15:14:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-23 15:14:13,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:13,837 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:13,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 15:14:13,837 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1130106033, now seen corresponding path program 1 times [2022-11-23 15:14:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:13,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937705939] [2022-11-23 15:14:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:13,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:14:14,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:14,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937705939] [2022-11-23 15:14:14,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937705939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:14,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25537741] [2022-11-23 15:14:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:14,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:14,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:14,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:14,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 15:14:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:14,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:14:14,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:14:14,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:14:14,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25537741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:14,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:14:14,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-11-23 15:14:14,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372446572] [2022-11-23 15:14:14,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:14,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:14:14,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:14:14,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:14:14,311 INFO L87 Difference]: Start difference. First operand 4477 states and 6588 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-23 15:14:15,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:15,765 INFO L93 Difference]: Finished difference Result 6777 states and 9277 transitions. [2022-11-23 15:14:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:14:15,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 104 [2022-11-23 15:14:15,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:15,780 INFO L225 Difference]: With dead ends: 6777 [2022-11-23 15:14:15,780 INFO L226 Difference]: Without dead ends: 4825 [2022-11-23 15:14:15,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:14:15,787 INFO L413 NwaCegarLoop]: 3193 mSDtfsCounter, 183 mSDsluCounter, 12444 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 15637 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:15,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 15637 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 15:14:15,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2022-11-23 15:14:16,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4662. [2022-11-23 15:14:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4662 states, 3973 states have (on average 1.506670022652907) internal successors, (5986), 3990 states have internal predecessors, (5986), 380 states have call successors, (380), 310 states have call predecessors, (380), 307 states have return successors, (418), 362 states have call predecessors, (418), 378 states have call successors, (418) [2022-11-23 15:14:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4662 states to 4662 states and 6784 transitions. [2022-11-23 15:14:16,253 INFO L78 Accepts]: Start accepts. Automaton has 4662 states and 6784 transitions. Word has length 104 [2022-11-23 15:14:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:16,254 INFO L495 AbstractCegarLoop]: Abstraction has 4662 states and 6784 transitions. [2022-11-23 15:14:16,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-23 15:14:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4662 states and 6784 transitions. [2022-11-23 15:14:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 15:14:16,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:16,258 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:16,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 15:14:16,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 15:14:16,465 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:16,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1845237448, now seen corresponding path program 1 times [2022-11-23 15:14:16,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:16,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77048854] [2022-11-23 15:14:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:16,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 15:14:17,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:17,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77048854] [2022-11-23 15:14:17,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77048854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:17,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434514524] [2022-11-23 15:14:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:17,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:17,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:17,149 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:17,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 15:14:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:17,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 15:14:17,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:14:17,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:14:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-23 15:14:17,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434514524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:14:17,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [670705458] [2022-11-23 15:14:17,769 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-23 15:14:17,769 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:14:17,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:14:17,778 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:14:17,779 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:14:25,255 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-23 15:14:30,175 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-23 15:14:30,884 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-23 15:14:30,962 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 67 for LOIs [2022-11-23 15:14:30,973 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-23 15:14:31,177 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-23 15:14:31,493 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:14:53,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [670705458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:53,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:14:53,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [13, 8, 6] total 64 [2022-11-23 15:14:53,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132562338] [2022-11-23 15:14:53,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:53,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-23 15:14:53,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:53,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-23 15:14:53,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=3582, Unknown=0, NotChecked=0, Total=4032 [2022-11-23 15:14:53,615 INFO L87 Difference]: Start difference. First operand 4662 states and 6784 transitions. Second operand has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-23 15:15:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:15:49,154 INFO L93 Difference]: Finished difference Result 7242 states and 9783 transitions. [2022-11-23 15:15:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-23 15:15:49,155 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) Word has length 110 [2022-11-23 15:15:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:15:49,168 INFO L225 Difference]: With dead ends: 7242 [2022-11-23 15:15:49,168 INFO L226 Difference]: Without dead ends: 4544 [2022-11-23 15:15:49,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3704 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=1204, Invalid=9926, Unknown=0, NotChecked=0, Total=11130 [2022-11-23 15:15:49,177 INFO L413 NwaCegarLoop]: 3152 mSDtfsCounter, 325 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 21447 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 21545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 21447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:15:49,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 3923 Invalid, 21545 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 21447 Invalid, 0 Unknown, 0 Unchecked, 33.2s Time] [2022-11-23 15:15:49,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2022-11-23 15:15:49,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4516. [2022-11-23 15:15:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3862 states have (on average 1.5145002589331953) internal successors, (5849), 3878 states have internal predecessors, (5849), 359 states have call successors, (359), 295 states have call predecessors, (359), 293 states have return successors, (395), 343 states have call predecessors, (395), 357 states have call successors, (395) [2022-11-23 15:15:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 6603 transitions. [2022-11-23 15:15:49,612 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 6603 transitions. Word has length 110 [2022-11-23 15:15:49,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:15:49,613 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 6603 transitions. [2022-11-23 15:15:49,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-23 15:15:49,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 6603 transitions. [2022-11-23 15:15:49,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 15:15:49,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:15:49,619 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:15:49,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 15:15:49,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 15:15:49,826 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:15:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:15:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash -806825934, now seen corresponding path program 1 times [2022-11-23 15:15:49,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:15:49,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901100492] [2022-11-23 15:15:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:15:49,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:15:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:15:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 15:15:50,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:15:50,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901100492] [2022-11-23 15:15:50,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901100492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:15:50,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888163041] [2022-11-23 15:15:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:15:50,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:15:50,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:15:50,118 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:15:50,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 15:15:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:15:50,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 15:15:50,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:15:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:15:50,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:15:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-23 15:15:50,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888163041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:15:50,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1411163345] [2022-11-23 15:15:50,684 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-23 15:15:50,685 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:15:50,685 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:15:50,685 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:15:50,686 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:15:56,790 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 72 for LOIs [2022-11-23 15:15:56,797 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-23 15:16:04,848 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-23 15:16:08,099 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-23 15:16:08,141 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 115 for LOIs [2022-11-23 15:16:08,166 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 121 for LOIs [2022-11-23 15:16:08,383 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-23 15:16:08,556 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:16:16,130 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 307 DAG size of output: 235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:27,414 WARN L233 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 389 DAG size of output: 258 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:42,474 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '158636#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-23 15:16:42,475 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:16:42,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:16:42,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2022-11-23 15:16:42,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801149813] [2022-11-23 15:16:42,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:16:42,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 15:16:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:16:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 15:16:42,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3799, Unknown=0, NotChecked=0, Total=4290 [2022-11-23 15:16:42,479 INFO L87 Difference]: Start difference. First operand 4516 states and 6603 transitions. Second operand has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-23 15:16:46,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:16:46,438 INFO L93 Difference]: Finished difference Result 7170 states and 9780 transitions. [2022-11-23 15:16:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-23 15:16:46,439 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 113 [2022-11-23 15:16:46,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:16:46,451 INFO L225 Difference]: With dead ends: 7170 [2022-11-23 15:16:46,451 INFO L226 Difference]: Without dead ends: 4298 [2022-11-23 15:16:46,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 315 SyntacticMatches, 6 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9673 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=1755, Invalid=20895, Unknown=0, NotChecked=0, Total=22650 [2022-11-23 15:16:46,465 INFO L413 NwaCegarLoop]: 3309 mSDtfsCounter, 10442 mSDsluCounter, 20350 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10447 SdHoareTripleChecker+Valid, 23659 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:16:46,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10447 Valid, 23659 Invalid, 3070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [238 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 15:16:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2022-11-23 15:16:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 3758. [2022-11-23 15:16:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3281 states have (on average 1.56903383114904) internal successors, (5148), 3301 states have internal predecessors, (5148), 251 states have call successors, (251), 220 states have call predecessors, (251), 224 states have return successors, (277), 237 states have call predecessors, (277), 249 states have call successors, (277) [2022-11-23 15:16:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5676 transitions. [2022-11-23 15:16:46,811 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5676 transitions. Word has length 113 [2022-11-23 15:16:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:16:46,812 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 5676 transitions. [2022-11-23 15:16:46,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-23 15:16:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5676 transitions. [2022-11-23 15:16:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 15:16:46,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:16:46,816 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:16:46,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 15:16:47,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 15:16:47,024 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:16:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:16:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash -724063171, now seen corresponding path program 1 times [2022-11-23 15:16:47,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:16:47,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591313508] [2022-11-23 15:16:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:16:47,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:16:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:16:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 15:16:47,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:16:47,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591313508] [2022-11-23 15:16:47,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591313508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:16:47,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114885529] [2022-11-23 15:16:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:16:47,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:16:47,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:16:47,610 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:16:47,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 15:16:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:16:47,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 15:16:47,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:16:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:16:47,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:16:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-23 15:16:48,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114885529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:16:48,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1803339303] [2022-11-23 15:16:48,214 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-23 15:16:48,214 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:16:48,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:16:48,215 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:16:48,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:16:53,303 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-23 15:16:57,298 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-23 15:17:01,686 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-23 15:17:01,739 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 68 for LOIs [2022-11-23 15:17:01,749 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-23 15:17:01,859 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-23 15:17:02,051 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:17:12,129 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 342 DAG size of output: 270 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:30,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1803339303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:30,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:17:30,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [13, 8, 6] total 65 [2022-11-23 15:17:30,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637078049] [2022-11-23 15:17:30,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:30,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-23 15:17:30,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:30,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-23 15:17:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=3702, Unknown=0, NotChecked=0, Total=4160 [2022-11-23 15:17:30,998 INFO L87 Difference]: Start difference. First operand 3758 states and 5676 transitions. Second operand has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-23 15:18:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:05,831 INFO L93 Difference]: Finished difference Result 5482 states and 7655 transitions. [2022-11-23 15:18:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-23 15:18:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) Word has length 113 [2022-11-23 15:18:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:05,842 INFO L225 Difference]: With dead ends: 5482 [2022-11-23 15:18:05,842 INFO L226 Difference]: Without dead ends: 3579 [2022-11-23 15:18:05,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3855 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=1203, Invalid=10139, Unknown=0, NotChecked=0, Total=11342 [2022-11-23 15:18:05,851 INFO L413 NwaCegarLoop]: 3152 mSDtfsCounter, 375 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 8946 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 9065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 8946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:05,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 3829 Invalid, 9065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 8946 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2022-11-23 15:18:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2022-11-23 15:18:06,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3527. [2022-11-23 15:18:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3109 states have (on average 1.594724991958829) internal successors, (4958), 3127 states have internal predecessors, (4958), 218 states have call successors, (218), 193 states have call predecessors, (218), 198 states have return successors, (242), 207 states have call predecessors, (242), 216 states have call successors, (242) [2022-11-23 15:18:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 5418 transitions. [2022-11-23 15:18:06,188 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 5418 transitions. Word has length 113 [2022-11-23 15:18:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:06,190 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 5418 transitions. [2022-11-23 15:18:06,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-23 15:18:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 5418 transitions. [2022-11-23 15:18:06,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 15:18:06,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:06,196 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:06,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 15:18:06,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:18:06,404 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:06,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:06,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1607272299, now seen corresponding path program 1 times [2022-11-23 15:18:06,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:06,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053259073] [2022-11-23 15:18:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:06,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:18:07,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:07,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053259073] [2022-11-23 15:18:07,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053259073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:18:07,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008545843] [2022-11-23 15:18:07,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:07,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:18:07,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:18:07,106 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:18:07,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 15:18:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:07,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-23 15:18:07,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:18:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:18:07,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:18:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-23 15:18:08,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008545843] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:18:08,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2021075547] [2022-11-23 15:18:08,689 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-23 15:18:08,689 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:18:08,689 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:18:08,690 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:18:08,690 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:18:14,358 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 63 for LOIs [2022-11-23 15:18:14,360 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 170 for LOIs [2022-11-23 15:18:18,516 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-23 15:18:20,567 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-23 15:18:20,610 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 56 for LOIs [2022-11-23 15:18:20,615 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-23 15:18:20,688 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 56 for LOIs [2022-11-23 15:18:20,981 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:18:52,555 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '185712#(and (= ~a15~0 1) (= 5 ~a20~0) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (= ~a27~0 1) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-23 15:18:52,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:18:52,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:18:52,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 14] total 37 [2022-11-23 15:18:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789830294] [2022-11-23 15:18:52,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:18:52,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-23 15:18:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-23 15:18:52,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=696, Invalid=7676, Unknown=0, NotChecked=0, Total=8372 [2022-11-23 15:18:52,560 INFO L87 Difference]: Start difference. First operand 3527 states and 5418 transitions. Second operand has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) [2022-11-23 15:19:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:02,808 INFO L93 Difference]: Finished difference Result 7917 states and 10527 transitions. [2022-11-23 15:19:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-23 15:19:02,808 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) Word has length 116 [2022-11-23 15:19:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:02,830 INFO L225 Difference]: With dead ends: 7917 [2022-11-23 15:19:02,830 INFO L226 Difference]: Without dead ends: 6794 [2022-11-23 15:19:02,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 284 SyntacticMatches, 17 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14629 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=3805, Invalid=30977, Unknown=0, NotChecked=0, Total=34782 [2022-11-23 15:19:02,841 INFO L413 NwaCegarLoop]: 3135 mSDtfsCounter, 21989 mSDsluCounter, 34930 mSDsCounter, 0 mSdLazyCounter, 7233 mSolverCounterSat, 1657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21995 SdHoareTripleChecker+Valid, 38065 SdHoareTripleChecker+Invalid, 8890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1657 IncrementalHoareTripleChecker+Valid, 7233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:02,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21995 Valid, 38065 Invalid, 8890 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1657 Valid, 7233 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 15:19:02,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2022-11-23 15:19:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 3841. [2022-11-23 15:19:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3841 states, 3338 states have (on average 1.5566207309766327) internal successors, (5196), 3366 states have internal predecessors, (5196), 263 states have call successors, (263), 229 states have call predecessors, (263), 238 states have return successors, (281), 246 states have call predecessors, (281), 261 states have call successors, (281) [2022-11-23 15:19:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 5740 transitions. [2022-11-23 15:19:03,313 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 5740 transitions. Word has length 116 [2022-11-23 15:19:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:03,313 INFO L495 AbstractCegarLoop]: Abstraction has 3841 states and 5740 transitions. [2022-11-23 15:19:03,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) [2022-11-23 15:19:03,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 5740 transitions. [2022-11-23 15:19:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 15:19:03,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:03,317 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:03,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 15:19:03,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:19:03,525 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:03,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:03,525 INFO L85 PathProgramCache]: Analyzing trace with hash 907514321, now seen corresponding path program 1 times [2022-11-23 15:19:03,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:03,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11723620] [2022-11-23 15:19:03,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:03,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-23 15:19:03,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:03,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11723620] [2022-11-23 15:19:03,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11723620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:03,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:03,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:19:03,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73134556] [2022-11-23 15:19:03,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:03,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:19:03,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:19:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:19:03,722 INFO L87 Difference]: Start difference. First operand 3841 states and 5740 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-23 15:19:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:05,141 INFO L93 Difference]: Finished difference Result 7345 states and 9735 transitions. [2022-11-23 15:19:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:19:05,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 128 [2022-11-23 15:19:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:05,156 INFO L225 Difference]: With dead ends: 7345 [2022-11-23 15:19:05,157 INFO L226 Difference]: Without dead ends: 6105 [2022-11-23 15:19:05,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:19:05,162 INFO L413 NwaCegarLoop]: 3285 mSDtfsCounter, 3501 mSDsluCounter, 6442 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 9727 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:05,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3501 Valid, 9727 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 15:19:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2022-11-23 15:19:05,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 4798. [2022-11-23 15:19:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4067 states have (on average 1.484140644209491) internal successors, (6036), 4104 states have internal predecessors, (6036), 384 states have call successors, (384), 330 states have call predecessors, (384), 345 states have return successors, (408), 364 states have call predecessors, (408), 382 states have call successors, (408) [2022-11-23 15:19:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6828 transitions. [2022-11-23 15:19:05,806 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6828 transitions. Word has length 128 [2022-11-23 15:19:05,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:05,806 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6828 transitions. [2022-11-23 15:19:05,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-23 15:19:05,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6828 transitions. [2022-11-23 15:19:05,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-23 15:19:05,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:05,811 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:05,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 15:19:05,811 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:05,812 INFO L85 PathProgramCache]: Analyzing trace with hash -713986447, now seen corresponding path program 1 times [2022-11-23 15:19:05,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:05,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144082129] [2022-11-23 15:19:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:19:05,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:19:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:19:05,922 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:19:05,923 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:19:05,924 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-23 15:19:05,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-23 15:19:05,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 15:19:05,930 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:05,934 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:19:06,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:19:06 BoogieIcfgContainer [2022-11-23 15:19:06,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:19:06,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:19:06,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:19:06,085 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:19:06,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:49" (3/4) ... [2022-11-23 15:19:06,087 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 15:19:06,238 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:19:06,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:19:06,239 INFO L158 Benchmark]: Toolchain (without parser) took 335912.66ms. Allocated memory was 144.7MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 80.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 937.5MB. Max. memory is 16.1GB. [2022-11-23 15:19:06,240 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 144.7MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:19:06,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4689.66ms. Allocated memory was 144.7MB in the beginning and 278.9MB in the end (delta: 134.2MB). Free memory was 80.1MB in the beginning and 128.7MB in the end (delta: -48.6MB). Peak memory consumption was 116.9MB. Max. memory is 16.1GB. [2022-11-23 15:19:06,242 INFO L158 Benchmark]: Boogie Procedure Inliner took 695.28ms. Allocated memory is still 278.9MB. Free memory was 128.7MB in the beginning and 142.9MB in the end (delta: -14.2MB). Peak memory consumption was 77.0MB. Max. memory is 16.1GB. [2022-11-23 15:19:06,245 INFO L158 Benchmark]: Boogie Preprocessor took 692.08ms. Allocated memory was 278.9MB in the beginning and 530.6MB in the end (delta: 251.7MB). Free memory was 142.9MB in the beginning and 367.3MB in the end (delta: -224.4MB). Peak memory consumption was 76.5MB. Max. memory is 16.1GB. [2022-11-23 15:19:06,245 INFO L158 Benchmark]: RCFGBuilder took 12945.72ms. Allocated memory was 530.6MB in the beginning and 1.4GB in the end (delta: 845.2MB). Free memory was 367.3MB in the beginning and 656.8MB in the end (delta: -289.5MB). Peak memory consumption was 564.1MB. Max. memory is 16.1GB. [2022-11-23 15:19:06,246 INFO L158 Benchmark]: TraceAbstraction took 316717.84ms. Allocated memory was 1.4GB in the beginning and 2.5GB in the end (delta: 1.1GB). Free memory was 655.8MB in the beginning and 1.5GB in the end (delta: -859.6MB). Peak memory consumption was 262.4MB. Max. memory is 16.1GB. [2022-11-23 15:19:06,246 INFO L158 Benchmark]: Witness Printer took 154.08ms. Allocated memory is still 2.5GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:19:06,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 144.7MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4689.66ms. Allocated memory was 144.7MB in the beginning and 278.9MB in the end (delta: 134.2MB). Free memory was 80.1MB in the beginning and 128.7MB in the end (delta: -48.6MB). Peak memory consumption was 116.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 695.28ms. Allocated memory is still 278.9MB. Free memory was 128.7MB in the beginning and 142.9MB in the end (delta: -14.2MB). Peak memory consumption was 77.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 692.08ms. Allocated memory was 278.9MB in the beginning and 530.6MB in the end (delta: 251.7MB). Free memory was 142.9MB in the beginning and 367.3MB in the end (delta: -224.4MB). Peak memory consumption was 76.5MB. Max. memory is 16.1GB. * RCFGBuilder took 12945.72ms. Allocated memory was 530.6MB in the beginning and 1.4GB in the end (delta: 845.2MB). Free memory was 367.3MB in the beginning and 656.8MB in the end (delta: -289.5MB). Peak memory consumption was 564.1MB. Max. memory is 16.1GB. * TraceAbstraction took 316717.84ms. Allocated memory was 1.4GB in the beginning and 2.5GB in the end (delta: 1.1GB). Free memory was 655.8MB in the beginning and 1.5GB in the end (delta: -859.6MB). Peak memory consumption was 262.4MB. Max. memory is 16.1GB. * Witness Printer took 154.08ms. Allocated memory is still 2.5GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int t2_pc = 0; [L11180] int m_st ; [L11181] int t1_st ; [L11182] int t2_st ; [L11183] int m_i ; [L11184] int t1_i ; [L11185] int t2_i ; [L11186] int M_E = 2; [L11187] int T1_E = 2; [L11188] int T2_E = 2; [L11189] int E_M = 2; [L11190] int E_1 = 2; [L11191] int E_2 = 2; [L11196] int token ; [L11198] int local ; [L11776] COND FALSE !(__VERIFIER_nondet_int()) [L11779] CALL main2() [L11763] int __retres1 ; [L11767] CALL init_model() [L11677] m_i = 1 [L11678] t1_i = 1 [L11679] t2_i = 1 [L11767] RET init_model() [L11768] CALL start_simulation() [L11704] int kernel_st ; [L11705] int tmp ; [L11706] int tmp___0 ; [L11710] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11711] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11712] CALL init_threads() [L11396] COND TRUE m_i == 1 [L11397] m_st = 0 [L11401] COND TRUE t1_i == 1 [L11402] t1_st = 0 [L11406] COND TRUE t2_i == 1 [L11407] t2_st = 0 [L11712] RET init_threads() [L11713] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11509] COND FALSE !(M_E == 0) [L11514] COND FALSE !(T1_E == 0) [L11519] COND FALSE !(T2_E == 0) [L11524] COND FALSE !(E_M == 0) [L11529] COND FALSE !(E_1 == 0) [L11534] COND FALSE !(E_2 == 0) [L11713] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11714] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11341] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11350] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11360] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11369] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11379] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11714] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11715] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11547] COND FALSE !(M_E == 1) [L11552] COND FALSE !(T1_E == 1) [L11557] COND FALSE !(T2_E == 1) [L11562] COND FALSE !(E_M == 1) [L11567] COND FALSE !(E_1 == 1) [L11572] COND FALSE !(E_2 == 1) [L11715] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11718] COND TRUE 1 [L11721] kernel_st = 1 [L11722] CALL eval() [L11442] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE \read(tmp_ndt_2) [L11475] t1_st = 1 [L11476] CALL transmit1() [L11259] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET transmit1() [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE \read(tmp_ndt_3) [L11489] t2_st = 1 [L11490] CALL transmit2() [L11295] COND TRUE t2_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, token=0] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET transmit2() [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11214] COND TRUE 1 [L11217] token = __VERIFIER_nondet_int() [L11218] local = token [L11219] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11220] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11620] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11341] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11351] COND TRUE E_1 == 1 [L11352] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND TRUE \read(tmp___0) [L11599] t1_st = 0 [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11370] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11379] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11220] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11221] E_1 = 2 [L11222] m_pc = 1 [L11223] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11462] RET master() [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE \read(tmp_ndt_2) [L11475] t1_st = 1 [L11476] CALL transmit1() [L11259] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11262] COND TRUE t1_pc == 1 [L11278] token += 1 [L11279] E_2 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11280] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11620] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11331] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11332] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11341] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11351] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11360] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11370] COND TRUE E_2 == 1 [L11371] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND TRUE \read(tmp___1) [L11607] t2_st = 0 [L11620] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L11280] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L11281] E_2 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET transmit1() [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE \read(tmp_ndt_3) [L11489] t2_st = 1 [L11490] CALL transmit2() [L11295] COND FALSE !(t2_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=1] [L11298] COND TRUE t2_pc == 1 [L11314] token += 1 [L11315] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11316] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11620] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11331] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11332] COND TRUE E_M == 1 [L11333] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND TRUE \read(tmp) [L11591] m_st = 0 [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11351] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11360] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11370] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11379] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11316] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11317] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET transmit2() [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11206] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11228] COND FALSE !(token != local + 2) [L11233] COND TRUE tmp_var <= 5 [L11234] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11239] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11240] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11241] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11242] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] - UnprovableResult [Line: 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, 1727 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 316.5s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 120.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64665 SdHoareTripleChecker+Valid, 64.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64593 mSDsluCounter, 196084 SdHoareTripleChecker+Invalid, 58.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129108 mSDsCounter, 2462 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50903 IncrementalHoareTripleChecker+Invalid, 53365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2462 mSolverCounterUnsat, 66976 mSDtfsCounter, 50903 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2949 GetRequests, 2295 SyntacticMatches, 25 SemanticMatches, 629 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31945 ImplicationChecksByTransitivity, 165.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4798occurred in iteration=21, InterpolantAutomatonStates: 414, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.5s AutomataMinimizationTime, 21 MinimizatonAttempts, 6413 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 3681 NumberOfCodeBlocks, 3642 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 3962 ConstructedInterpolants, 0 QuantifiedInterpolants, 8318 SizeOfPredicates, 24 NumberOfNonLiveVariables, 7246 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 40 InterpolantComputations, 17 PerfectInterpolantSequences, 2132/2425 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 27.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 14, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 176, DAG_INTERPRETER_EARLY_EXITS: 11, TOOLS_POST_APPLICATIONS: 197, TOOLS_POST_TIME: 17.8s, TOOLS_POST_CALL_APPLICATIONS: 126, TOOLS_POST_CALL_TIME: 3.8s, TOOLS_POST_RETURN_APPLICATIONS: 100, TOOLS_POST_RETURN_TIME: 2.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 413, TOOLS_QUANTIFIERELIM_TIME: 23.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 4.9s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 497, FLUID_YES_ANSWERS: 1, DOMAIN_JOIN_APPLICATIONS: 143, DOMAIN_JOIN_TIME: 3.0s, DOMAIN_ALPHA_APPLICATIONS: 1, DOMAIN_ALPHA_TIME: 0.1s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 8, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 176, DOMAIN_ISBOTTOM_TIME: 0.3s, LOOP_SUMMARIZER_APPLICATIONS: 8, LOOP_SUMMARIZER_CACHE_MISSES: 8, LOOP_SUMMARIZER_OVERALL_TIME: 3.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 3.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 8, CALL_SUMMARIZER_APPLICATIONS: 100, CALL_SUMMARIZER_CACHE_MISSES: 12, CALL_SUMMARIZER_OVERALL_TIME: 0.4s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.4s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 7082, DAG_COMPRESSION_RETAINED_NODES: 489, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-23 15:19:06,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46650403-6113-4825-8b67-fcf0af6428a2/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