./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c106345e9477571987e92ea289ca141c8dda13e5ec4cb633eccf96e295486f4c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:01:33,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:01:33,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:01:33,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:01:33,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:01:33,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:01:33,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:01:33,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:01:33,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:01:33,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:01:33,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:01:33,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:01:33,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:01:33,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:01:33,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:01:33,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:01:33,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:01:33,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:01:33,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:01:33,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:01:33,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:01:33,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:01:33,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:01:33,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:01:33,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:01:33,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:01:33,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:01:33,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:01:33,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:01:33,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:01:33,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:01:33,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:01:33,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:01:33,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:01:33,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:01:33,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:01:33,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:01:33,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:01:33,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:01:33,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:01:33,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:01:33,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:01:33,635 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:01:33,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:01:33,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:01:33,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:01:33,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:01:33,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:01:33,637 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:01:33,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:01:33,637 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:01:33,638 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:01:33,638 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:01:33,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:01:33,638 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:01:33,638 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:01:33,639 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:01:33,639 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:01:33,639 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:01:33,639 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:01:33,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:01:33,640 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:01:33,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:01:33,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:01:33,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:01:33,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:01:33,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:01:33,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:01:33,642 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:01:33,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:01:33,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:01:33,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:01:33,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:01:33,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:01:33,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:01:33,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:01:33,644 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:01:33,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:01:33,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:01:33,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:01:33,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:01:33,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:01:33,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:01:33,645 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_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c106345e9477571987e92ea289ca141c8dda13e5ec4cb633eccf96e295486f4c [2022-11-03 04:01:33,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:01:33,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:01:33,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:01:33,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:01:33,974 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:01:33,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2022-11-03 04:01:34,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/data/4b6422ea5/840dbe0b96c54fc082b7d4bb0bddc5e7/FLAG0d4544854 [2022-11-03 04:01:34,666 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:01:34,666 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2022-11-03 04:01:34,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/data/4b6422ea5/840dbe0b96c54fc082b7d4bb0bddc5e7/FLAG0d4544854 [2022-11-03 04:01:34,983 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/data/4b6422ea5/840dbe0b96c54fc082b7d4bb0bddc5e7 [2022-11-03 04:01:34,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:01:34,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:01:34,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:01:34,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:01:34,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:01:34,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:01:34" (1/1) ... [2022-11-03 04:01:34,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d7ad58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:34, skipping insertion in model container [2022-11-03 04:01:34,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:01:34" (1/1) ... [2022-11-03 04:01:35,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:01:35,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:01:35,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[914,927] [2022-11-03 04:01:35,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[7125,7138] [2022-11-03 04:01:35,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:01:35,333 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:01:35,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[914,927] [2022-11-03 04:01:35,368 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[7125,7138] [2022-11-03 04:01:35,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:01:35,434 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:01:35,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35 WrapperNode [2022-11-03 04:01:35,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:01:35,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:01:35,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:01:35,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:01:35,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,519 INFO L138 Inliner]: procedures = 57, calls = 64, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 461 [2022-11-03 04:01:35,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:01:35,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:01:35,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:01:35,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:01:35,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,553 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:01:35,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:01:35,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:01:35,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:01:35,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (1/1) ... [2022-11-03 04:01:35,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:01:35,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:35,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:01:35,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:01:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:01:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 04:01:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 04:01:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-03 04:01:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-03 04:01:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-03 04:01:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-03 04:01:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-03 04:01:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-03 04:01:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-03 04:01:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-03 04:01:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-03 04:01:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-03 04:01:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-03 04:01:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-03 04:01:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-03 04:01:35,675 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-03 04:01:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-03 04:01:35,675 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-03 04:01:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-03 04:01:35,676 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-03 04:01:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-03 04:01:35,676 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-03 04:01:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:01:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-03 04:01:35,677 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-03 04:01:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-03 04:01:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-03 04:01:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:01:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:01:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-03 04:01:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-03 04:01:35,806 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:01:35,809 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:01:36,544 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:01:36,757 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:01:36,758 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-03 04:01:36,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:01:36 BoogieIcfgContainer [2022-11-03 04:01:36,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:01:36,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:01:36,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:01:36,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:01:36,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:01:34" (1/3) ... [2022-11-03 04:01:36,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34abcbd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:01:36, skipping insertion in model container [2022-11-03 04:01:36,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:35" (2/3) ... [2022-11-03 04:01:36,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34abcbd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:01:36, skipping insertion in model container [2022-11-03 04:01:36,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:01:36" (3/3) ... [2022-11-03 04:01:36,772 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2022-11-03 04:01:36,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:01:36,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 04:01:36,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:01:36,892 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;@2f10b9ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:01:36,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 04:01:36,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 103 states have (on average 1.4854368932038835) internal successors, (153), 110 states have internal predecessors, (153), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-03 04:01:36,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 04:01:36,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:36,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:36,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1251216547, now seen corresponding path program 1 times [2022-11-03 04:01:36,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:36,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482142655] [2022-11-03 04:01:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:01:37,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:37,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482142655] [2022-11-03 04:01:37,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482142655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:37,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:37,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:01:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828242896] [2022-11-03 04:01:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:37,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:01:37,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:01:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:01:37,376 INFO L87 Difference]: Start difference. First operand has 151 states, 103 states have (on average 1.4854368932038835) internal successors, (153), 110 states have internal predecessors, (153), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-03 04:01:37,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:37,701 INFO L93 Difference]: Finished difference Result 354 states and 503 transitions. [2022-11-03 04:01:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:01:37,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 40 [2022-11-03 04:01:37,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:37,713 INFO L225 Difference]: With dead ends: 354 [2022-11-03 04:01:37,714 INFO L226 Difference]: Without dead ends: 207 [2022-11-03 04:01:37,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:01:37,721 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 263 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:37,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 370 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:37,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-03 04:01:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 199. [2022-11-03 04:01:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 138 states have (on average 1.3478260869565217) internal successors, (186), 143 states have internal predecessors, (186), 39 states have call successors, (39), 21 states have call predecessors, (39), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-03 04:01:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 261 transitions. [2022-11-03 04:01:37,793 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 261 transitions. Word has length 40 [2022-11-03 04:01:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:37,794 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 261 transitions. [2022-11-03 04:01:37,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-03 04:01:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 261 transitions. [2022-11-03 04:01:37,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 04:01:37,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:37,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:37,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:01:37,798 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:37,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1371233118, now seen corresponding path program 1 times [2022-11-03 04:01:37,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:37,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736061200] [2022-11-03 04:01:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:37,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:01:38,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:38,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736061200] [2022-11-03 04:01:38,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736061200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:38,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:38,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:01:38,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136396362] [2022-11-03 04:01:38,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:38,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:01:38,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:01:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:01:38,027 INFO L87 Difference]: Start difference. First operand 199 states and 261 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-03 04:01:38,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:38,835 INFO L93 Difference]: Finished difference Result 607 states and 770 transitions. [2022-11-03 04:01:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:38,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 40 [2022-11-03 04:01:38,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:38,841 INFO L225 Difference]: With dead ends: 607 [2022-11-03 04:01:38,841 INFO L226 Difference]: Without dead ends: 474 [2022-11-03 04:01:38,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:01:38,843 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 589 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:38,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 744 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:01:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-11-03 04:01:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 384. [2022-11-03 04:01:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 269 states have (on average 1.278810408921933) internal successors, (344), 275 states have internal predecessors, (344), 66 states have call successors, (66), 44 states have call predecessors, (66), 47 states have return successors, (67), 66 states have call predecessors, (67), 63 states have call successors, (67) [2022-11-03 04:01:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 477 transitions. [2022-11-03 04:01:38,900 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 477 transitions. Word has length 40 [2022-11-03 04:01:38,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:38,900 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 477 transitions. [2022-11-03 04:01:38,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-03 04:01:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 477 transitions. [2022-11-03 04:01:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 04:01:38,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:38,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:38,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:01:38,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:38,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:38,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2032566909, now seen corresponding path program 1 times [2022-11-03 04:01:38,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:38,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440340020] [2022-11-03 04:01:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:38,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:01:38,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:01:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:01:38,985 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:01:38,986 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:01:38,987 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-03 04:01:38,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-03 04:01:38,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:01:38,995 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-03 04:01:38,999 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:01:39,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:01:39 BoogieIcfgContainer [2022-11-03 04:01:39,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:01:39,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:01:39,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:01:39,110 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:01:39,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:01:36" (3/4) ... [2022-11-03 04:01:39,112 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 04:01:39,184 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 04:01:39,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:01:39,185 INFO L158 Benchmark]: Toolchain (without parser) took 4195.76ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 71.3MB in the beginning and 38.1MB in the end (delta: 33.2MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. [2022-11-03 04:01:39,185 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:01:39,185 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.13ms. Allocated memory is still 92.3MB. Free memory was 71.1MB in the beginning and 62.9MB in the end (delta: 8.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 04:01:39,186 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.00ms. Allocated memory is still 92.3MB. Free memory was 62.7MB in the beginning and 60.1MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:01:39,186 INFO L158 Benchmark]: Boogie Preprocessor took 38.93ms. Allocated memory is still 92.3MB. Free memory was 60.1MB in the beginning and 57.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 04:01:39,187 INFO L158 Benchmark]: RCFGBuilder took 1201.39ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 57.4MB in the beginning and 53.0MB in the end (delta: 4.4MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2022-11-03 04:01:39,187 INFO L158 Benchmark]: TraceAbstraction took 2345.58ms. Allocated memory is still 113.2MB. Free memory was 52.6MB in the beginning and 44.4MB in the end (delta: 8.2MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-11-03 04:01:39,188 INFO L158 Benchmark]: Witness Printer took 74.51ms. Allocated memory is still 113.2MB. Free memory was 44.4MB in the beginning and 38.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 04:01:39,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.13ms. Allocated memory is still 92.3MB. Free memory was 71.1MB in the beginning and 62.9MB in the end (delta: 8.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.00ms. Allocated memory is still 92.3MB. Free memory was 62.7MB in the beginning and 60.1MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.93ms. Allocated memory is still 92.3MB. Free memory was 60.1MB in the beginning and 57.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1201.39ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 57.4MB in the beginning and 53.0MB in the end (delta: 4.4MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2345.58ms. Allocated memory is still 113.2MB. Free memory was 52.6MB in the beginning and 44.4MB in the end (delta: 8.2MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 74.51ms. Allocated memory is still 113.2MB. Free memory was 44.4MB in the beginning and 38.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 28]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int q_buf_0 ; [L34] int q_free ; [L35] int q_read_ev ; [L36] int q_write_ev ; [L37] int q_req_up ; [L38] int q_ev ; [L59] int p_num_write ; [L60] int p_last_write ; [L61] int p_dw_st ; [L62] int p_dw_pc ; [L63] int p_dw_i ; [L64] int c_num_read ; [L65] int c_last_read ; [L66] int c_dr_st ; [L67] int c_dr_pc ; [L68] int c_dr_i ; [L172] static int a_t ; [L500] int m_pc = 0; [L501] int t1_pc = 0; [L502] int t2_pc = 0; [L503] int m_st ; [L504] int t1_st ; [L505] int t2_st ; [L506] int m_i ; [L507] int t1_i ; [L508] int t2_i ; [L509] int M_E = 2; [L510] int T1_E = 2; [L511] int T2_E = 2; [L512] int E_M = 2; [L513] int E_1 = 2; [L514] int E_2 = 2; [L519] int token ; [L521] int local ; [L1087] COND TRUE __VERIFIER_nondet_int() [L1088] CALL main1() [L474] int __retres1 ; [L478] CALL init_model1() [L460] q_free = 1 [L461] q_write_ev = 2 [L462] q_read_ev = q_write_ev [L463] p_num_write = 0 [L464] p_dw_pc = 0 [L465] p_dw_i = 1 [L466] c_num_read = 0 [L467] c_dr_pc = 0 [L468] c_dr_i = 1 [L478] RET init_model1() [L479] CALL start_simulation1() [L414] int kernel_st ; [L415] int tmp ; [L419] kernel_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L420] CALL update_channels1() VAL [\old(q_ev)=0, \old(q_read_ev)=2, \old(q_req_up)=0, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L230] COND FALSE !((int )q_req_up == 1) [L420] RET update_channels1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L421] CALL init_threads1() [L245] COND TRUE (int )p_dw_i == 1 [L246] p_dw_st = 0 [L250] COND TRUE (int )c_dr_i == 1 [L251] c_dr_st = 0 [L421] RET init_threads1() [L422] CALL fire_delta_events1() VAL [\old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L283] COND FALSE !((int )q_read_ev == 0) [L288] COND FALSE !((int )q_write_ev == 0) [L422] RET fire_delta_events1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L423] CALL activate_threads1() VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L316] int tmp ; [L317] int tmp___0 ; VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L321] CALL, EXPR is_do_write_p_triggered() VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L70] int __retres1 ; VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L73] COND FALSE !((int )p_dw_pc == 1) VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L83] __retres1 = 0 VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, __retres1=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L85] return (__retres1); [L321] RET, EXPR is_do_write_p_triggered() VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, is_do_write_p_triggered()=0, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L321] tmp = is_do_write_p_triggered() [L323] COND FALSE !(\read(tmp)) VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, tmp=0, token=0] [L329] CALL, EXPR is_do_read_c_triggered() VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L89] int __retres1 ; VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L92] COND FALSE !((int )c_dr_pc == 1) VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L102] __retres1 = 0 VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, __retres1=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L104] return (__retres1); [L329] RET, EXPR is_do_read_c_triggered() VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, is_do_read_c_triggered()=0, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, tmp=0, token=0] [L329] tmp___0 = is_do_read_c_triggered() [L331] COND FALSE !(\read(tmp___0)) [L423] RET activate_threads1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L424] CALL reset_delta_events1() VAL [\old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L301] COND FALSE !((int )q_read_ev == 1) [L306] COND FALSE !((int )q_write_ev == 1) [L424] RET reset_delta_events1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L427] COND TRUE 1 [L430] kernel_st = 1 [L431] CALL eval1() [L341] int tmp ; [L342] int tmp___0 ; [L343] int tmp___1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L347] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L350] CALL, EXPR exists_runnable_thread1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L260] int __retres1 ; [L263] COND TRUE (int )p_dw_st == 0 [L264] __retres1 = 1 [L276] return (__retres1); [L350] RET, EXPR exists_runnable_thread1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, exists_runnable_thread1()=1, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L350] tmp___1 = exists_runnable_thread1() [L352] COND TRUE \read(tmp___1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, tmp___1=1, token=0] [L357] COND TRUE (int )p_dw_st == 0 [L359] tmp = __VERIFIER_nondet_int() [L361] COND FALSE !(\read(tmp)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, tmp=0, tmp___1=1, token=0] [L367] CALL error1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L28] reach_error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] - UnprovableResult [Line: 496]: 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 15 procedures, 151 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 856 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 852 mSDsluCounter, 1114 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 743 mSDsCounter, 257 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 692 IncrementalHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 257 mSolverCounterUnsat, 528 mSDtfsCounter, 692 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=384occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 98 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-03 04:01:39,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4b8b80-49b5-4da4-851d-537def75c864/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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