./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/03_incdec.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/03_incdec.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc --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 c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 --- 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 [2022-11-02 20:59:46,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:46,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:46,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:46,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:46,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:46,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:46,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:46,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:46,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:46,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:46,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:46,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:46,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:46,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:46,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:46,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:46,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:47,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:47,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:47,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:47,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:47,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:47,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:47,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:47,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:47,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:47,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:47,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:47,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:47,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:47,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:47,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:47,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:47,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:47,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:47,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:47,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:47,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:47,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:47,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:47,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:59:47,064 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:59:47,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:59:47,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:59:47,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:59:47,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:59:47,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:59:47,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:59:47,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:59:47,066 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:59:47,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:59:47,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:59:47,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:59:47,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:59:47,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:59:47,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:59:47,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:59:47,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:59:47,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:59:47,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:59:47,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:59:47,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:59:47,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:59:47,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:59:47,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:59:47,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:47,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:59:47,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:59:47,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:59:47,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:59:47,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:59:47,071 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:59:47,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:59:47,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:59:47,071 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_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 [2022-11-02 20:59:47,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:59:47,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:59:47,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:59:47,394 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:59:47,395 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:59:47,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/03_incdec.i [2022-11-02 20:59:47,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/data/7aac38d08/909fdf4b3c0e40bf84aed078500db4bd/FLAG8d9c4d191 [2022-11-02 20:59:48,032 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:59:48,033 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/sv-benchmarks/c/pthread-ext/03_incdec.i [2022-11-02 20:59:48,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/data/7aac38d08/909fdf4b3c0e40bf84aed078500db4bd/FLAG8d9c4d191 [2022-11-02 20:59:48,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/data/7aac38d08/909fdf4b3c0e40bf84aed078500db4bd [2022-11-02 20:59:48,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:59:48,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:59:48,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:48,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:59:48,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:59:48,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:48" (1/1) ... [2022-11-02 20:59:48,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2190243f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:48, skipping insertion in model container [2022-11-02 20:59:48,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:48" (1/1) ... [2022-11-02 20:59:48,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:59:48,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:59:48,926 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_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/sv-benchmarks/c/pthread-ext/03_incdec.i[30534,30547] [2022-11-02 20:59:48,937 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_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/sv-benchmarks/c/pthread-ext/03_incdec.i[30928,30941] [2022-11-02 20:59:48,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:48,953 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:59:48,992 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_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/sv-benchmarks/c/pthread-ext/03_incdec.i[30534,30547] [2022-11-02 20:59:48,995 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_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/sv-benchmarks/c/pthread-ext/03_incdec.i[30928,30941] [2022-11-02 20:59:48,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:49,025 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:59:49,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49 WrapperNode [2022-11-02 20:59:49,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:49,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:49,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:59:49,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:59:49,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,070 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 133 [2022-11-02 20:59:49,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:49,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:59:49,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:59:49,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:59:49,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,096 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:49,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:49,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:49,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:49,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (1/1) ... [2022-11-02 20:59:49,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:49,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:49,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:49,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f957b0-ed8b-4159-b7c7-6bfa02e580f8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:59:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:59:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:59:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:59:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:59:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:59:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:59:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:49,197 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:59:49,319 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:49,321 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:49,667 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:49,805 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:49,806 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:59:49,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:49 BoogieIcfgContainer [2022-11-02 20:59:49,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:49,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:49,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:49,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:49,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:48" (1/3) ... [2022-11-02 20:59:49,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b479040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:49, skipping insertion in model container [2022-11-02 20:59:49,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:49" (2/3) ... [2022-11-02 20:59:49,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b479040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:49, skipping insertion in model container [2022-11-02 20:59:49,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:49" (3/3) ... [2022-11-02 20:59:49,818 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2022-11-02 20:59:49,826 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:59:49,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:49,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:59:49,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:59:49,892 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:59:49,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 88 transitions, 181 flow [2022-11-02 20:59:50,002 INFO L130 PetriNetUnfolder]: 7/99 cut-off events. [2022-11-02 20:59:50,002 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:59:50,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 99 events. 7/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 194 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2022-11-02 20:59:50,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 88 transitions, 181 flow [2022-11-02 20:59:50,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 88 transitions, 181 flow [2022-11-02 20:59:50,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:50,029 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;@5c23c1a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:50,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:59:50,045 INFO L130 PetriNetUnfolder]: 2/51 cut-off events. [2022-11-02 20:59:50,045 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:59:50,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:50,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:50,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:59:50,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1017339012, now seen corresponding path program 1 times [2022-11-02 20:59:50,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:50,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531091017] [2022-11-02 20:59:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:50,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:50,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:59:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:50,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:59:50,210 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:59:50,212 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:59:50,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-02 20:59:50,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-02 20:59:50,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-02 20:59:50,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-02 20:59:50,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:59:50,216 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:59:50,219 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:59:50,219 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:59:50,280 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:59:50,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 145 transitions, 302 flow [2022-11-02 20:59:50,389 INFO L130 PetriNetUnfolder]: 13/169 cut-off events. [2022-11-02 20:59:50,390 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:59:50,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 169 events. 13/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 523 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 125. Up to 6 conditions per place. [2022-11-02 20:59:50,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 145 transitions, 302 flow [2022-11-02 20:59:50,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 145 transitions, 302 flow [2022-11-02 20:59:50,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:50,408 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;@5c23c1a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:50,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-02 20:59:50,441 INFO L130 PetriNetUnfolder]: 3/93 cut-off events. [2022-11-02 20:59:50,444 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:59:50,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:50,445 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:50,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:59:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 257166716, now seen corresponding path program 1 times [2022-11-02 20:59:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:50,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724279237] [2022-11-02 20:59:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:50,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:50,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:59:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:50,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:59:50,565 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:59:50,566 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-02 20:59:50,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-02 20:59:50,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-11-02 20:59:50,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-11-02 20:59:50,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-11-02 20:59:50,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-02 20:59:50,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-02 20:59:50,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:59:50,570 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:59:50,573 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:59:50,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:59:50,659 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:59:50,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 202 transitions, 425 flow [2022-11-02 20:59:50,759 INFO L130 PetriNetUnfolder]: 19/239 cut-off events. [2022-11-02 20:59:50,759 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:59:50,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 239 events. 19/239 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 875 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2022-11-02 20:59:50,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 202 transitions, 425 flow [2022-11-02 20:59:50,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 202 transitions, 425 flow [2022-11-02 20:59:50,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:50,780 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;@5c23c1a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:50,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-02 20:59:50,805 INFO L130 PetriNetUnfolder]: 6/131 cut-off events. [2022-11-02 20:59:50,806 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:59:50,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:50,809 INFO L208 CegarLoopForPetriNet]: 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] [2022-11-02 20:59:50,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-02 20:59:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:50,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1812641839, now seen corresponding path program 1 times [2022-11-02 20:59:50,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:50,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597669578] [2022-11-02 20:59:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:50,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:51,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:51,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597669578] [2022-11-02 20:59:51,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597669578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:51,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:51,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:59:51,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925606187] [2022-11-02 20:59:51,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:51,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:59:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:51,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:59:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:51,429 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 202 [2022-11-02 20:59:51,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 202 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 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) [2022-11-02 20:59:51,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:51,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 202 [2022-11-02 20:59:51,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:00,603 INFO L130 PetriNetUnfolder]: 22290/47811 cut-off events. [2022-11-02 21:00:00,603 INFO L131 PetriNetUnfolder]: For 2533/2533 co-relation queries the response was YES. [2022-11-02 21:00:00,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83392 conditions, 47811 events. 22290/47811 cut-off events. For 2533/2533 co-relation queries the response was YES. Maximal size of possible extension queue 2009. Compared 540305 event pairs, 9635 based on Foata normal form. 15844/58146 useless extension candidates. Maximal degree in co-relation 35264. Up to 14341 conditions per place. [2022-11-02 21:00:01,122 INFO L137 encePairwiseOnDemand]: 177/202 looper letters, 200 selfloop transitions, 14 changer transitions 0/324 dead transitions. [2022-11-02 21:00:01,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 324 transitions, 1135 flow [2022-11-02 21:00:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 942 transitions. [2022-11-02 21:00:01,149 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7772277227722773 [2022-11-02 21:00:01,150 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 942 transitions. [2022-11-02 21:00:01,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 942 transitions. [2022-11-02 21:00:01,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:01,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 942 transitions. [2022-11-02 21:00:01,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 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) [2022-11-02 21:00:01,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 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) [2022-11-02 21:00:01,178 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 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) [2022-11-02 21:00:01,180 INFO L175 Difference]: Start difference. First operand has 193 places, 202 transitions, 425 flow. Second operand 6 states and 942 transitions. [2022-11-02 21:00:01,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 324 transitions, 1135 flow [2022-11-02 21:00:01,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 324 transitions, 1121 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-11-02 21:00:01,199 INFO L231 Difference]: Finished difference. Result has 190 places, 197 transitions, 502 flow [2022-11-02 21:00:01,202 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=502, PETRI_PLACES=190, PETRI_TRANSITIONS=197} [2022-11-02 21:00:01,206 INFO L287 CegarLoopForPetriNet]: 193 programPoint places, -3 predicate places. [2022-11-02 21:00:01,207 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 197 transitions, 502 flow [2022-11-02 21:00:01,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 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) [2022-11-02 21:00:01,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:01,208 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:01,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:00:01,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-02 21:00:01,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:01,210 INFO L85 PathProgramCache]: Analyzing trace with hash 269474782, now seen corresponding path program 1 times [2022-11-02 21:00:01,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:01,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958102723] [2022-11-02 21:00:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:01,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:00:01,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:00:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:00:01,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:00:01,264 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:00:01,264 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-02 21:00:01,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2022-11-02 21:00:01,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2022-11-02 21:00:01,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2022-11-02 21:00:01,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2022-11-02 21:00:01,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2022-11-02 21:00:01,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2022-11-02 21:00:01,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2022-11-02 21:00:01,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2022-11-02 21:00:01,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:00:01,274 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 21:00:01,275 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:00:01,275 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 21:00:01,346 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:00:01,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 259 transitions, 550 flow [2022-11-02 21:00:01,429 INFO L130 PetriNetUnfolder]: 25/309 cut-off events. [2022-11-02 21:00:01,429 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 21:00:01,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 309 events. 25/309 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1232 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 247. Up to 10 conditions per place. [2022-11-02 21:00:01,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 259 transitions, 550 flow [2022-11-02 21:00:01,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 259 transitions, 550 flow [2022-11-02 21:00:01,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:01,441 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;@5c23c1a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:01,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-02 21:00:01,455 INFO L130 PetriNetUnfolder]: 6/135 cut-off events. [2022-11-02 21:00:01,455 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:00:01,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:01,456 INFO L208 CegarLoopForPetriNet]: 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] [2022-11-02 21:00:01,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-02 21:00:01,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:01,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1498301880, now seen corresponding path program 1 times [2022-11-02 21:00:01,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:01,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770054237] [2022-11-02 21:00:01,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:01,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:01,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:01,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770054237] [2022-11-02 21:00:01,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770054237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:01,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:01,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:01,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787647440] [2022-11-02 21:00:01,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:01,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:01,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:01,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:01,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:01,756 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 259 [2022-11-02 21:00:01,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 259 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2022-11-02 21:00:01,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:01,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 259 [2022-11-02 21:00:01,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand