./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/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_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/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_844c8c77-4833-4da9-bddd-f31d6eba537a/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 b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 --- 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 16:45:08,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:45:08,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:45:08,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:45:08,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:45:08,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:45:08,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:45:08,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:45:08,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:45:08,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:45:08,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:45:08,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:45:08,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:45:08,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:45:08,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:45:08,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:45:08,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:45:08,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:45:08,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:45:08,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:45:08,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:45:08,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:45:08,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:45:08,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:45:08,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:45:08,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:45:08,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:45:08,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:45:08,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:45:08,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:45:08,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:45:08,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:45:08,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:45:08,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:45:08,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:45:08,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:45:08,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:45:08,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:45:08,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:45:08,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:45:08,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:45:08,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:45:08,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:45:08,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:45:08,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:45:08,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:45:08,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:45:08,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:45:08,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:45:08,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:45:08,993 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:45:08,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:45:08,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:45:08,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:45:08,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:45:08,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:45:08,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:45:08,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:45:08,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:45:08,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:45:08,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:45:09,000 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:45:09,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:45:09,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:45:09,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:45:09,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:45:09,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:45:09,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:45:09,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:45:09,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:45:09,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:45:09,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:45:09,001 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:45:09,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:45:09,001 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:45:09,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:45:09,001 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:45:09,002 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_844c8c77-4833-4da9-bddd-f31d6eba537a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 [2022-12-13 16:45:09,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:45:09,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:45:09,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:45:09,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:45:09,216 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:45:09,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/reorder_2.i [2022-12-13 16:45:11,735 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:45:11,944 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:45:11,944 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/sv-benchmarks/c/pthread/reorder_2.i [2022-12-13 16:45:11,955 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/data/55596474a/8babb03904db4ad9a565b84fa1f51706/FLAGf2cdb4b83 [2022-12-13 16:45:12,308 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/data/55596474a/8babb03904db4ad9a565b84fa1f51706 [2022-12-13 16:45:12,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:45:12,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:45:12,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:45:12,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:45:12,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:45:12,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12507bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12, skipping insertion in model container [2022-12-13 16:45:12,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:45:12,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:45:12,682 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,686 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,688 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,690 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,691 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,693 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,693 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_844c8c77-4833-4da9-bddd-f31d6eba537a/sv-benchmarks/c/pthread/reorder_2.i[59859,59872] [2022-12-13 16:45:12,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:45:12,703 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:45:12,730 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,733 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,734 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,735 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,735 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,737 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:45:12,737 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_844c8c77-4833-4da9-bddd-f31d6eba537a/sv-benchmarks/c/pthread/reorder_2.i[59859,59872] [2022-12-13 16:45:12,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:45:12,794 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:45:12,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12 WrapperNode [2022-12-13 16:45:12,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:45:12,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:45:12,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:45:12,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:45:12,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,831 INFO L138 Inliner]: procedures = 370, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 148 [2022-12-13 16:45:12,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:45:12,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:45:12,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:45:12,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:45:12,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,851 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:45:12,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:45:12,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:45:12,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:45:12,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (1/1) ... [2022-12-13 16:45:12,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:45:12,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:45:12,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:45:12,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:45:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:45:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:45:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:45:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-12-13 16:45:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-12-13 16:45:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:45:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:45:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-12-13 16:45:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-12-13 16:45:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:45:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:45:12,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:45:12,913 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 16:45:13,027 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:45:13,029 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:45:13,226 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:45:13,234 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:45:13,234 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 16:45:13,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:45:13 BoogieIcfgContainer [2022-12-13 16:45:13,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:45:13,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:45:13,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:45:13,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:45:13,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:45:12" (1/3) ... [2022-12-13 16:45:13,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f475d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:45:13, skipping insertion in model container [2022-12-13 16:45:13,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:12" (2/3) ... [2022-12-13 16:45:13,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f475d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:45:13, skipping insertion in model container [2022-12-13 16:45:13,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:45:13" (3/3) ... [2022-12-13 16:45:13,242 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2022-12-13 16:45:13,248 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:45:13,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:45:13,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:45:13,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:45:13,303 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 16:45:13,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 172 transitions, 366 flow [2022-12-13 16:45:13,409 INFO L130 PetriNetUnfolder]: 37/348 cut-off events. [2022-12-13 16:45:13,409 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 16:45:13,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 348 events. 37/348 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1162 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2022-12-13 16:45:13,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 172 transitions, 366 flow [2022-12-13 16:45:13,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 170 transitions, 356 flow [2022-12-13 16:45:13,421 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:45:13,429 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 170 transitions, 356 flow [2022-12-13 16:45:13,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 170 transitions, 356 flow [2022-12-13 16:45:13,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 170 transitions, 356 flow [2022-12-13 16:45:13,484 INFO L130 PetriNetUnfolder]: 31/324 cut-off events. [2022-12-13 16:45:13,484 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 16:45:13,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 324 events. 31/324 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1014 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 195. Up to 8 conditions per place. [2022-12-13 16:45:13,488 INFO L119 LiptonReduction]: Number of co-enabled transitions 2014 [2022-12-13 16:45:22,485 INFO L134 LiptonReduction]: Checked pairs total: 2479 [2022-12-13 16:45:22,485 INFO L136 LiptonReduction]: Total number of compositions: 186 [2022-12-13 16:45:22,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:45:22,503 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;@4d47cdaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:45:22,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 16:45:22,506 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2022-12-13 16:45:22,507 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:45:22,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:22,507 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:45:22,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:45:22,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash 612825131, now seen corresponding path program 1 times [2022-12-13 16:45:22,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:22,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784779388] [2022-12-13 16:45:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:22,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:22,752 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 16:45:22,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:22,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784779388] [2022-12-13 16:45:22,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784779388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:22,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:22,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:45:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593367354] [2022-12-13 16:45:22,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:22,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:45:22,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:45:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:45:22,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 358 [2022-12-13 16:45:22,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 16:45:22,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:22,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 358 [2022-12-13 16:45:22,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:22,864 INFO L130 PetriNetUnfolder]: 118/270 cut-off events. [2022-12-13 16:45:22,865 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 16:45:22,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 270 events. 118/270 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1103 event pairs, 29 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 382. Up to 201 conditions per place. [2022-12-13 16:45:22,866 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 31 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2022-12-13 16:45:22,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 155 flow [2022-12-13 16:45:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:45:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:45:22,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2022-12-13 16:45:22,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45344506517690875 [2022-12-13 16:45:22,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2022-12-13 16:45:22,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2022-12-13 16:45:22,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:22,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2022-12-13 16:45:22,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 16:45:22,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 16:45:22,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 16:45:22,890 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 62 flow. Second operand 3 states and 487 transitions. [2022-12-13 16:45:22,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 155 flow [2022-12-13 16:45:22,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 155 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:45:22,894 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 70 flow [2022-12-13 16:45:22,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2022-12-13 16:45:22,898 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2022-12-13 16:45:22,898 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 70 flow [2022-12-13 16:45:22,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 16:45:22,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:22,899 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 16:45:22,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:45:22,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:45:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1819967284, now seen corresponding path program 1 times [2022-12-13 16:45:22,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:22,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106965049] [2022-12-13 16:45:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:22,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:45:22,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:45:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:45:22,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:45:22,989 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 16:45:22,990 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-12-13 16:45:22,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-12-13 16:45:22,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 16:45:22,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-12-13 16:45:22,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:45:22,992 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 16:45:22,994 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 16:45:22,994 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 16:45:23,011 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-13 16:45:23,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 192 transitions, 432 flow [2022-12-13 16:45:23,154 INFO L130 PetriNetUnfolder]: 149/1087 cut-off events. [2022-12-13 16:45:23,154 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 16:45:23,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1087 events. 149/1087 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5612 event pairs, 2 based on Foata normal form. 0/945 useless extension candidates. Maximal degree in co-relation 639. Up to 32 conditions per place. [2022-12-13 16:45:23,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 192 transitions, 432 flow [2022-12-13 16:45:23,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 192 transitions, 432 flow [2022-12-13 16:45:23,162 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:45:23,162 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 192 transitions, 432 flow [2022-12-13 16:45:23,163 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 192 transitions, 432 flow [2022-12-13 16:45:23,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 192 transitions, 432 flow [2022-12-13 16:45:23,294 INFO L130 PetriNetUnfolder]: 149/1087 cut-off events. [2022-12-13 16:45:23,294 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 16:45:23,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1087 events. 149/1087 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5612 event pairs, 2 based on Foata normal form. 0/945 useless extension candidates. Maximal degree in co-relation 639. Up to 32 conditions per place. [2022-12-13 16:45:23,310 INFO L119 LiptonReduction]: Number of co-enabled transitions 5132 [2022-12-13 16:45:30,660 INFO L134 LiptonReduction]: Checked pairs total: 10447 [2022-12-13 16:45:30,661 INFO L136 LiptonReduction]: Total number of compositions: 191 [2022-12-13 16:45:30,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:45:30,664 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;@4d47cdaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:45:30,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 16:45:30,666 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-13 16:45:30,666 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:45:30,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:30,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:45:30,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 16:45:30,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash 995241684, now seen corresponding path program 1 times [2022-12-13 16:45:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:30,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391910377] [2022-12-13 16:45:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:30,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:30,734 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 16:45:30,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:30,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391910377] [2022-12-13 16:45:30,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391910377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:30,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:30,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:45:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242238979] [2022-12-13 16:45:30,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:30,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:45:30,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:30,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:45:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:45:30,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 383 [2022-12-13 16:45:30,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 16:45:30,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:30,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 383 [2022-12-13 16:45:30,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:31,303 INFO L130 PetriNetUnfolder]: 4447/6838 cut-off events. [2022-12-13 16:45:31,304 INFO L131 PetriNetUnfolder]: For 1290/1290 co-relation queries the response was YES. [2022-12-13 16:45:31,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14161 conditions, 6838 events. 4447/6838 cut-off events. For 1290/1290 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 37007 event pairs, 1440 based on Foata normal form. 0/5173 useless extension candidates. Maximal degree in co-relation 10038. Up to 6226 conditions per place. [2022-12-13 16:45:31,325 INFO L137 encePairwiseOnDemand]: 378/383 looper letters, 53 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2022-12-13 16:45:31,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 309 flow [2022-12-13 16:45:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:45:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:45:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2022-12-13 16:45:31,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46823324630113144 [2022-12-13 16:45:31,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2022-12-13 16:45:31,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2022-12-13 16:45:31,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:31,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2022-12-13 16:45:31,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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 16:45:31,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 383.0) internal successors, (1532), 4 states have internal predecessors, (1532), 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 16:45:31,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 383.0) internal successors, (1532), 4 states have internal predecessors, (1532), 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 16:45:31,332 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 126 flow. Second operand 3 states and 538 transitions. [2022-12-13 16:45:31,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 309 flow [2022-12-13 16:45:31,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 309 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:45:31,339 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 147 flow [2022-12-13 16:45:31,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2022-12-13 16:45:31,340 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2022-12-13 16:45:31,340 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 147 flow [2022-12-13 16:45:31,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 16:45:31,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:31,341 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:45:31,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:45:31,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 16:45:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1285317906, now seen corresponding path program 1 times [2022-12-13 16:45:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:31,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600724466] [2022-12-13 16:45:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:31,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:45:31,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:45:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:45:31,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:45:31,392 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 16:45:31,392 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-13 16:45:31,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-13 16:45:31,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-13 16:45:31,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-13 16:45:31,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-13 16:45:31,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:45:31,393 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 16:45:31,396 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-12-13 16:45:31,396 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 16:45:31,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 04:45:31 BasicIcfg [2022-12-13 16:45:31,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 16:45:31,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 16:45:31,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 16:45:31,432 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 16:45:31,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:45:13" (3/4) ... [2022-12-13 16:45:31,433 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 16:45:31,466 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 16:45:31,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 16:45:31,467 INFO L158 Benchmark]: Toolchain (without parser) took 19155.54ms. Allocated memory was 115.3MB in the beginning and 172.0MB in the end (delta: 56.6MB). Free memory was 80.3MB in the beginning and 96.3MB in the end (delta: -16.0MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2022-12-13 16:45:31,467 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 89.3MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:45:31,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.14ms. Allocated memory was 115.3MB in the beginning and 142.6MB in the end (delta: 27.3MB). Free memory was 80.0MB in the beginning and 108.3MB in the end (delta: -28.3MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2022-12-13 16:45:31,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.55ms. Allocated memory is still 142.6MB. Free memory was 108.3MB in the beginning and 105.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:45:31,468 INFO L158 Benchmark]: Boogie Preprocessor took 22.03ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 104.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:45:31,468 INFO L158 Benchmark]: RCFGBuilder took 381.67ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 86.5MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 16:45:31,469 INFO L158 Benchmark]: TraceAbstraction took 18193.60ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 85.9MB in the beginning and 102.6MB in the end (delta: -16.7MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. [2022-12-13 16:45:31,469 INFO L158 Benchmark]: Witness Printer took 35.19ms. Allocated memory is still 172.0MB. Free memory was 101.6MB in the beginning and 96.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 16:45:31,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 89.3MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.14ms. Allocated memory was 115.3MB in the beginning and 142.6MB in the end (delta: 27.3MB). Free memory was 80.0MB in the beginning and 108.3MB in the end (delta: -28.3MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.55ms. Allocated memory is still 142.6MB. Free memory was 108.3MB in the beginning and 105.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.03ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 104.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 381.67ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 86.5MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 18193.60ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 85.9MB in the beginning and 102.6MB in the end (delta: -16.7MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. * Witness Printer took 35.19ms. Allocated memory is still 172.0MB. Free memory was 101.6MB in the beginning and 96.3MB in the end (delta: 5.2MB). 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: 9.1s, 160 PlacesBefore, 26 PlacesAfterwards, 170 TransitionsBefore, 23 TransitionsAfterwards, 2014 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 27 ConcurrentYvCompositions, 13 ChoiceCompositions, 186 TotalNumberOfCompositions, 2479 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2039, independent: 2011, independent conditional: 0, independent unconditional: 2011, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1211, independent: 1207, independent conditional: 0, independent unconditional: 1207, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2039, independent: 804, independent conditional: 0, independent unconditional: 804, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 1211, unknown conditional: 0, unknown unconditional: 1211] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.5s, 179 PlacesBefore, 40 PlacesAfterwards, 192 TransitionsBefore, 39 TransitionsAfterwards, 5132 CoEnabledTransitionPairs, 8 FixpointIterations, 61 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 32 ConcurrentYvCompositions, 14 ChoiceCompositions, 191 TotalNumberOfCompositions, 10447 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7764, independent: 7674, independent conditional: 0, independent unconditional: 7674, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2975, independent: 2959, independent conditional: 0, independent unconditional: 2959, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7764, independent: 4715, independent conditional: 0, independent unconditional: 4715, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 2975, unknown conditional: 0, unknown unconditional: 2975] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 110, Positive conditional cache size: 0, Positive unconditional cache size: 110, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1295]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1236] 0 static int iSet = 2; [L1237] 0 static int iCheck = 2; [L1238] 0 static int a = 0; [L1239] 0 static int b = 0; [L1245] 0 int i, err; [L1246] COND TRUE 0 argc != 1 [L1247] COND FALSE 0 !(argc != 3) [L1255] EXPR 0 \read(iSet) [L1255] 0 iSet > 100000 || iCheck > 100000 [L1255] EXPR 0 \read(iCheck) [L1255] 0 iSet > 100000 || iCheck > 100000 [L1255] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1258] EXPR 0 \read(iSet) [L1258] 0 pthread_t setPool[iSet]; [L1259] EXPR 0 \read(iCheck) [L1259] 0 pthread_t checkPool[iCheck]; [L1260] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={51:49}, argv={51:49}, b=0, checkPool={14:0}, i=0, iCheck={10:0}, iSet={9:0}, setPool={13:0}] [L1260] EXPR 0 \read(iSet) [L1260] COND TRUE 0 i < iSet [L1261] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={51:49}, argv={51:49}, b=0, checkPool={14:0}, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=1, setPool={13:0}] [L1261] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={51:49}, argv={51:49}, b=0, checkPool={14:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=1, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, setPool={13:0}] [L1261] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1260] 0 i++ VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={51:49}, argv={51:49}, b=0, checkPool={14:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=50, i=1, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1260] EXPR 0 \read(iSet) [L1260] COND FALSE 0 !(i < iSet) [L1266] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={51:49}, argv={51:49}, b=0, checkPool={14:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=50, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1266] EXPR 0 \read(iCheck) [L1266] COND TRUE 0 i < iCheck [L1267-L1268] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={51:49}, argv={51:49}, b=0, checkPool={14:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=50, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0))=2, setPool={13:0}] [L1288] 1 a = 1 VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}] [L1293] COND TRUE 2 ! ((a == 0 && b == 0) || (a == 1 && b == -1)) [L1295] 2 reach_error() VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}, param={0:0}] - UnprovableResult [Line: 1261]: 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: 1267]: 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 5 procedures, 171 locations, 4 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: 9.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 46 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=70occurred in iteration=1, 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, 0.1s SatisfiabilityAnalysisTime, 0.1s 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 186 locations, 5 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: 8.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 12 mSDtfsCounter, 81 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=147occurred in iteration=1, 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, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 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 16:45:31,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844c8c77-4833-4da9-bddd-f31d6eba537a/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