./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1568f4b0615eb98ed6bee584aeda19485d9df0ed08c84a8233a5817e939c5388 --- 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-2329fc7 [2022-12-13 20:10:36,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:10:36,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:10:36,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:10:36,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:10:36,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:10:36,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:10:36,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:10:36,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:10:36,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:10:36,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:10:36,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:10:36,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:10:36,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:10:36,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:10:36,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:10:36,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:10:36,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:10:36,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:10:36,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:10:36,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:10:36,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:10:36,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:10:36,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:10:36,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:10:36,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:10:36,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:10:36,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:10:36,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:10:36,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:10:36,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:10:36,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:10:36,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:10:36,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:10:36,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:10:36,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:10:36,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:10:36,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:10:36,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:10:36,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:10:36,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:10:36,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:10:36,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:10:36,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:10:36,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:10:36,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:10:36,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:10:36,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:10:36,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:10:36,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:10:36,416 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:10:36,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:10:36,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:10:36,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:10:36,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:10:36,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:10:36,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:10:36,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:10:36,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:10:36,423 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:10:36,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:10:36,424 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:10:36,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:10:36,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:10:36,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:10:36,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:10:36,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:10:36,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:10:36,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:10:36,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:10:36,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:10:36,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:10:36,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:10:36,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:10:36,426 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:10:36,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:10:36,427 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:10:36,427 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1568f4b0615eb98ed6bee584aeda19485d9df0ed08c84a8233a5817e939c5388 [2022-12-13 20:10:36,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:10:36,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:10:36,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:10:36,620 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:10:36,620 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:10:36,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe015_power.oepc.i [2022-12-13 20:10:39,196 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:10:39,419 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:10:39,419 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/sv-benchmarks/c/pthread-wmm/safe015_power.oepc.i [2022-12-13 20:10:39,431 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/data/fc12c7a96/ae354b9eb737416f8b3911a00c0e4533/FLAG245f175b9 [2022-12-13 20:10:39,444 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/data/fc12c7a96/ae354b9eb737416f8b3911a00c0e4533 [2022-12-13 20:10:39,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:10:39,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:10:39,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:10:39,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:10:39,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:10:39,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6467b299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39, skipping insertion in model container [2022-12-13 20:10:39,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:10:39,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:10:39,619 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_c0dd0f57-7245-4e07-bee5-ba17427b7e82/sv-benchmarks/c/pthread-wmm/safe015_power.oepc.i[995,1008] [2022-12-13 20:10:39,727 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,727 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,727 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,727 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,727 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:10:39,776 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:10:39,784 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_c0dd0f57-7245-4e07-bee5-ba17427b7e82/sv-benchmarks/c/pthread-wmm/safe015_power.oepc.i[995,1008] [2022-12-13 20:10:39,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:39,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:39,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:10:39,846 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:10:39,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39 WrapperNode [2022-12-13 20:10:39,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:10:39,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:10:39,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:10:39,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:10:39,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,883 INFO L138 Inliner]: procedures = 176, calls = 86, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 225 [2022-12-13 20:10:39,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:10:39,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:10:39,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:10:39,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:10:39,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,906 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:10:39,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:10:39,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:10:39,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:10:39,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (1/1) ... [2022-12-13 20:10:39,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:10:39,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:39,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:10:39,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:10:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:10:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:10:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 20:10:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:10:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:10:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:10:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 20:10:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 20:10:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 20:10:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 20:10:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 20:10:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 20:10:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:10:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 20:10:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:10:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:10:39,975 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:10:40,112 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:10:40,114 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:10:40,519 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:10:40,800 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:10:40,800 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:10:40,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:40 BoogieIcfgContainer [2022-12-13 20:10:40,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:10:40,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:10:40,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:10:40,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:10:40,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:10:39" (1/3) ... [2022-12-13 20:10:40,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b555aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:10:40, skipping insertion in model container [2022-12-13 20:10:40,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:39" (2/3) ... [2022-12-13 20:10:40,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b555aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:10:40, skipping insertion in model container [2022-12-13 20:10:40,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:40" (3/3) ... [2022-12-13 20:10:40,811 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_power.oepc.i [2022-12-13 20:10:40,819 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:10:40,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:10:40,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-13 20:10:40,830 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:10:40,892 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 20:10:40,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 133 transitions, 281 flow [2022-12-13 20:10:40,981 INFO L130 PetriNetUnfolder]: 2/130 cut-off events. [2022-12-13 20:10:40,981 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:40,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-12-13 20:10:40,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 133 transitions, 281 flow [2022-12-13 20:10:40,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 130 transitions, 269 flow [2022-12-13 20:10:40,993 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:10:41,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 130 transitions, 269 flow [2022-12-13 20:10:41,003 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 130 transitions, 269 flow [2022-12-13 20:10:41,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 130 transitions, 269 flow [2022-12-13 20:10:41,026 INFO L130 PetriNetUnfolder]: 2/130 cut-off events. [2022-12-13 20:10:41,026 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:41,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-12-13 20:10:41,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 2064 [2022-12-13 20:10:49,218 INFO L134 LiptonReduction]: Checked pairs total: 6089 [2022-12-13 20:10:49,219 INFO L136 LiptonReduction]: Total number of compositions: 116 [2022-12-13 20:10:49,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:10:49,233 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=PETRI_NET, 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;@3b7c2b13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:10:49,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 20:10:49,236 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-13 20:10:49,236 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:49,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:49,242 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:10:49,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 20:10:49,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash 946946683, now seen corresponding path program 1 times [2022-12-13 20:10:49,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:49,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005960359] [2022-12-13 20:10:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:49,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:10:49,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:49,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005960359] [2022-12-13 20:10:49,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005960359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:49,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:49,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:10:49,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697467086] [2022-12-13 20:10:49,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:49,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:49,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:49,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:49,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:49,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2022-12-13 20:10:49,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:10:49,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:49,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2022-12-13 20:10:49,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:50,130 INFO L130 PetriNetUnfolder]: 1555/2296 cut-off events. [2022-12-13 20:10:50,131 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-12-13 20:10:50,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4643 conditions, 2296 events. 1555/2296 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11328 event pairs, 165 based on Foata normal form. 96/2076 useless extension candidates. Maximal degree in co-relation 4632. Up to 1991 conditions per place. [2022-12-13 20:10:50,141 INFO L137 encePairwiseOnDemand]: 245/249 looper letters, 35 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2022-12-13 20:10:50,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 162 flow [2022-12-13 20:10:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:50,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-12-13 20:10:50,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5194109772423026 [2022-12-13 20:10:50,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-12-13 20:10:50,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-12-13 20:10:50,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:50,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-12-13 20:10:50,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:10:50,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:10:50,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:10:50,164 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 388 transitions. [2022-12-13 20:10:50,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 162 flow [2022-12-13 20:10:50,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 20:10:50,167 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 58 flow [2022-12-13 20:10:50,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2022-12-13 20:10:50,171 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2022-12-13 20:10:50,171 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 58 flow [2022-12-13 20:10:50,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:10:50,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:50,172 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:10:50,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:10:50,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 20:10:50,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:50,173 INFO L85 PathProgramCache]: Analyzing trace with hash -709423098, now seen corresponding path program 1 times [2022-12-13 20:10:50,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:50,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206116350] [2022-12-13 20:10:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:50,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:50,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:10:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:50,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:10:50,220 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:10:50,221 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-12-13 20:10:50,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-12-13 20:10:50,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-12-13 20:10:50,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-12-13 20:10:50,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2022-12-13 20:10:50,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2022-12-13 20:10:50,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-12-13 20:10:50,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2022-12-13 20:10:50,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:10:50,224 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 20:10:50,229 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:10:50,229 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:10:50,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:10:50 BasicIcfg [2022-12-13 20:10:50,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:10:50,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:10:50,252 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:10:50,252 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:10:50,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:40" (3/4) ... [2022-12-13 20:10:50,254 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 20:10:50,289 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:10:50,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:10:50,290 INFO L158 Benchmark]: Toolchain (without parser) took 10841.96ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 94.8MB in the beginning and 50.1MB in the end (delta: 44.7MB). Peak memory consumption was 73.8MB. Max. memory is 16.1GB. [2022-12-13 20:10:50,290 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:10:50,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.06ms. Allocated memory is still 130.0MB. Free memory was 94.8MB in the beginning and 64.9MB in the end (delta: 29.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-13 20:10:50,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.81ms. Allocated memory is still 130.0MB. Free memory was 64.9MB in the beginning and 61.7MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:10:50,291 INFO L158 Benchmark]: Boogie Preprocessor took 27.26ms. Allocated memory is still 130.0MB. Free memory was 61.7MB in the beginning and 59.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:10:50,291 INFO L158 Benchmark]: RCFGBuilder took 891.02ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 59.2MB in the beginning and 93.5MB in the end (delta: -34.3MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2022-12-13 20:10:50,291 INFO L158 Benchmark]: TraceAbstraction took 9446.58ms. Allocated memory is still 157.3MB. Free memory was 92.5MB in the beginning and 56.4MB in the end (delta: 36.1MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2022-12-13 20:10:50,291 INFO L158 Benchmark]: Witness Printer took 37.22ms. Allocated memory is still 157.3MB. Free memory was 56.4MB in the beginning and 50.1MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 20:10:50,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.06ms. Allocated memory is still 130.0MB. Free memory was 94.8MB in the beginning and 64.9MB in the end (delta: 29.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.81ms. Allocated memory is still 130.0MB. Free memory was 64.9MB in the beginning and 61.7MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.26ms. Allocated memory is still 130.0MB. Free memory was 61.7MB in the beginning and 59.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 891.02ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 59.2MB in the beginning and 93.5MB in the end (delta: -34.3MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9446.58ms. Allocated memory is still 157.3MB. Free memory was 92.5MB in the beginning and 56.4MB in the end (delta: 36.1MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. * Witness Printer took 37.22ms. Allocated memory is still 157.3MB. Free memory was 56.4MB in the beginning and 50.1MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.2s, 138 PlacesBefore, 35 PlacesAfterwards, 130 TransitionsBefore, 26 TransitionsAfterwards, 2064 CoEnabledTransitionPairs, 8 FixpointIterations, 59 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 116 TotalNumberOfCompositions, 6089 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2178, independent: 1946, independent conditional: 0, independent unconditional: 1946, dependent: 232, dependent conditional: 0, dependent unconditional: 232, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1117, independent: 1075, independent conditional: 0, independent unconditional: 1075, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2178, independent: 871, independent conditional: 0, independent unconditional: 871, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 1117, unknown conditional: 0, unknown unconditional: 1117] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p0_EAX = 0; [L714] 0 int __unbuffered_p2_EAX = 0; [L715] 0 _Bool __unbuffered_p2_EAX$flush_delayed; [L716] 0 int __unbuffered_p2_EAX$mem_tmp; [L717] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd0; [L718] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd1; [L719] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd2; [L720] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd3; [L721] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd0; [L722] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd1; [L723] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd2; [L724] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd3; [L725] 0 _Bool __unbuffered_p2_EAX$read_delayed; [L726] 0 int *__unbuffered_p2_EAX$read_delayed_var; [L727] 0 int __unbuffered_p2_EAX$w_buff0; [L728] 0 _Bool __unbuffered_p2_EAX$w_buff0_used; [L729] 0 int __unbuffered_p2_EAX$w_buff1; [L730] 0 _Bool __unbuffered_p2_EAX$w_buff1_used; [L731] 0 _Bool main$tmp_guard0; [L732] 0 _Bool main$tmp_guard1; [L734] 0 int x = 0; [L735] 0 _Bool x$flush_delayed; [L736] 0 int x$mem_tmp; [L737] 0 _Bool x$r_buff0_thd0; [L738] 0 _Bool x$r_buff0_thd1; [L739] 0 _Bool x$r_buff0_thd2; [L740] 0 _Bool x$r_buff0_thd3; [L741] 0 _Bool x$r_buff1_thd0; [L742] 0 _Bool x$r_buff1_thd1; [L743] 0 _Bool x$r_buff1_thd2; [L744] 0 _Bool x$r_buff1_thd3; [L745] 0 _Bool x$read_delayed; [L746] 0 int *x$read_delayed_var; [L747] 0 int x$w_buff0; [L748] 0 _Bool x$w_buff0_used; [L749] 0 int x$w_buff1; [L750] 0 _Bool x$w_buff1_used; [L752] 0 int y = 0; [L753] 0 _Bool weak$$choice0; [L754] 0 _Bool weak$$choice1; [L755] 0 _Bool weak$$choice2; [L871] 0 pthread_t t2121; [L872] FCALL, FORK 0 pthread_create(&t2121, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2121, ((void *)0), P0, ((void *)0))=-2, t2121={6:0}, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x={3:0}, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L873] 0 pthread_t t2122; [L874] FCALL, FORK 0 pthread_create(&t2122, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2122, ((void *)0), P1, ((void *)0))=-1, t2121={6:0}, t2122={5:0}, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x={3:0}, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L789] 2 x$w_buff1 = x$w_buff0 [L790] 2 x$w_buff0 = 1 [L791] 2 x$w_buff1_used = x$w_buff0_used [L792] 2 x$w_buff0_used = (_Bool)1 [L793] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L793] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L794] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L795] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L796] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L797] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L798] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x={3:0}, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L801] 2 x$w_buff1 = x$w_buff0 [L802] 2 x$w_buff0 = 2 [L803] 2 x$w_buff1_used = x$w_buff0_used [L804] 2 x$w_buff0_used = (_Bool)1 [L805] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND TRUE 2 !expression [L19] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x={3:0}, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=1, x$w_buff1_used=1, y=0] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 872]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 876]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 874]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 160 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 1 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-12-13 20:10:50,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dd0f57-7245-4e07-bee5-ba17427b7e82/bin/uautomizer-uyxdKDjOR8/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