./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/sync01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/sync01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ --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 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 --- 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-dbf71c6-m [2022-10-17 11:06:15,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:06:15,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:06:15,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:06:15,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:06:15,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:06:15,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:06:15,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:06:15,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:06:15,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:06:15,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:06:15,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:06:15,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:06:15,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:06:15,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:06:15,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:06:15,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:06:15,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:06:15,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:06:15,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:06:15,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:06:15,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:06:15,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:06:15,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:06:15,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:06:15,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:06:15,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:06:15,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:06:15,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:06:15,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:06:15,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:06:15,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:06:15,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:06:15,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:06:15,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:06:15,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:06:15,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:06:15,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:06:15,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:06:15,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:06:15,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:06:15,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:06:15,687 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:06:15,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:06:15,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:06:15,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:06:15,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:06:15,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:06:15,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:06:15,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:06:15,691 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:06:15,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:06:15,692 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:06:15,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:06:15,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:06:15,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:06:15,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:06:15,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:06:15,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:06:15,701 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:06:15,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:06:15,701 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:06:15,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:06:15,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:06:15,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:06:15,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:06:15,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:06:15,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:06:15,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:06:15,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:06:15,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:06:15,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:06:15,705 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:06:15,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:06:15,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:06:15,706 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_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 [2022-10-17 11:06:16,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:06:16,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:06:16,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:06:16,041 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:06:16,041 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:06:16,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread/sync01.i [2022-10-17 11:06:16,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/data/c040af557/65333bcce31348b9b14fbed54e61a8eb/FLAG9331dabfa [2022-10-17 11:06:16,616 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:06:16,616 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/sv-benchmarks/c/pthread/sync01.i [2022-10-17 11:06:16,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/data/c040af557/65333bcce31348b9b14fbed54e61a8eb/FLAG9331dabfa [2022-10-17 11:06:16,910 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/data/c040af557/65333bcce31348b9b14fbed54e61a8eb [2022-10-17 11:06:16,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:06:16,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:06:16,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:06:16,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:06:16,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:06:16,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:06:16" (1/1) ... [2022-10-17 11:06:16,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54dfbcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:16, skipping insertion in model container [2022-10-17 11:06:16,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:06:16" (1/1) ... [2022-10-17 11:06:16,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:06:16,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:06:17,504 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_d1568331-e64b-41de-85e2-467c2ed5e077/sv-benchmarks/c/pthread/sync01.i[42004,42017] [2022-10-17 11:06:17,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:06:17,531 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:06:17,568 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_d1568331-e64b-41de-85e2-467c2ed5e077/sv-benchmarks/c/pthread/sync01.i[42004,42017] [2022-10-17 11:06:17,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:06:17,635 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:06:17,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17 WrapperNode [2022-10-17 11:06:17,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:06:17,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:06:17,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:06:17,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:06:17,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,697 INFO L138 Inliner]: procedures = 268, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-10-17 11:06:17,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:06:17,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:06:17,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:06:17,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:06:17,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:06:17,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:06:17,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:06:17,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:06:17,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (1/1) ... [2022-10-17 11:06:17,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:06:17,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:17,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:06:17,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:06:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:06:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:06:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:06:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 11:06:17,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 11:06:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 11:06:17,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 11:06:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:06:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-10-17 11:06:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:06:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:06:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:06:17,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:06:17,828 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 11:06:17,981 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:06:17,983 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:06:18,316 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:06:18,328 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:06:18,329 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 11:06:18,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:06:18 BoogieIcfgContainer [2022-10-17 11:06:18,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:06:18,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:06:18,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:06:18,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:06:18,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:06:16" (1/3) ... [2022-10-17 11:06:18,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7140bb8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:06:18, skipping insertion in model container [2022-10-17 11:06:18,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:17" (2/3) ... [2022-10-17 11:06:18,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7140bb8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:06:18, skipping insertion in model container [2022-10-17 11:06:18,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:06:18" (3/3) ... [2022-10-17 11:06:18,346 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2022-10-17 11:06:18,355 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 11:06:18,365 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:06:18,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:06:18,366 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 11:06:18,470 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-17 11:06:18,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 107 transitions, 230 flow [2022-10-17 11:06:18,606 INFO L130 PetriNetUnfolder]: 5/105 cut-off events. [2022-10-17 11:06:18,606 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:06:18,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 105 events. 5/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-10-17 11:06:18,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 107 transitions, 230 flow [2022-10-17 11:06:18,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 94 transitions, 200 flow [2022-10-17 11:06:18,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:06:18,647 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;@25985068, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:06:18,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 11:06:18,712 INFO L130 PetriNetUnfolder]: 4/93 cut-off events. [2022-10-17 11:06:18,712 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:06:18,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:06:18,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:06:18,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:06:18,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 896771055, now seen corresponding path program 1 times [2022-10-17 11:06:18,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:18,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972846894] [2022-10-17 11:06:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:18,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:06:19,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:19,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972846894] [2022-10-17 11:06:19,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972846894] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:19,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:06:19,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:06:19,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121825253] [2022-10-17 11:06:19,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:19,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:06:19,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:06:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:06:19,196 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 107 [2022-10-17 11:06:19,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 200 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 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) [2022-10-17 11:06:19,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:06:19,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 107 [2022-10-17 11:06:19,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:06:19,237 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2022-10-17 11:06:19,237 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-10-17 11:06:19,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 92 events. 2/92 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 70. Up to 5 conditions per place. [2022-10-17 11:06:19,239 INFO L137 encePairwiseOnDemand]: 105/107 looper letters, 4 selfloop transitions, 0 changer transitions 0/92 dead transitions. [2022-10-17 11:06:19,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 204 flow [2022-10-17 11:06:19,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:06:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 11:06:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 204 transitions. [2022-10-17 11:06:19,261 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9532710280373832 [2022-10-17 11:06:19,262 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 204 transitions. [2022-10-17 11:06:19,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 204 transitions. [2022-10-17 11:06:19,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:06:19,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 204 transitions. [2022-10-17 11:06:19,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 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) [2022-10-17 11:06:19,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2022-10-17 11:06:19,278 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2022-10-17 11:06:19,280 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 200 flow. Second operand 2 states and 204 transitions. [2022-10-17 11:06:19,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 204 flow [2022-10-17 11:06:19,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 196 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 11:06:19,288 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 188 flow [2022-10-17 11:06:19,290 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=188, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2022-10-17 11:06:19,294 INFO L287 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2022-10-17 11:06:19,294 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 188 flow [2022-10-17 11:06:19,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 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) [2022-10-17 11:06:19,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:06:19,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:06:19,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:06:19,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:06:19,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1661242016, now seen corresponding path program 1 times [2022-10-17 11:06:19,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:19,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307872501] [2022-10-17 11:06:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:19,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:06:19,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:19,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307872501] [2022-10-17 11:06:19,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307872501] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:19,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:06:19,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:06:19,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316060848] [2022-10-17 11:06:19,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:19,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:06:19,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:19,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:06:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:06:19,895 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2022-10-17 11:06:19,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 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) [2022-10-17 11:06:19,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:06:19,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2022-10-17 11:06:19,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:06:20,103 INFO L130 PetriNetUnfolder]: 14/126 cut-off events. [2022-10-17 11:06:20,103 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 11:06:20,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 126 events. 14/126 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 157 event pairs, 2 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 167. Up to 16 conditions per place. [2022-10-17 11:06:20,107 INFO L137 encePairwiseOnDemand]: 95/107 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2022-10-17 11:06:20,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 243 flow [2022-10-17 11:06:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 11:06:20,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 11:06:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 880 transitions. [2022-10-17 11:06:20,117 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.822429906542056 [2022-10-17 11:06:20,118 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 880 transitions. [2022-10-17 11:06:20,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 880 transitions. [2022-10-17 11:06:20,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:06:20,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 880 transitions. [2022-10-17 11:06:20,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.0) internal successors, (880), 10 states have internal predecessors, (880), 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) [2022-10-17 11:06:20,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-10-17 11:06:20,131 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-10-17 11:06:20,131 INFO L175 Difference]: Start difference. First operand has 94 places, 92 transitions, 188 flow. Second operand 10 states and 880 transitions. [2022-10-17 11:06:20,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 243 flow [2022-10-17 11:06:20,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 243 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 11:06:20,136 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-10-17 11:06:20,136 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2022-10-17 11:06:20,137 INFO L287 CegarLoopForPetriNet]: 97 programPoint places, 1 predicate places. [2022-10-17 11:06:20,137 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-10-17 11:06:20,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 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) [2022-10-17 11:06:20,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-10-17 11:06:20,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-10-17 11:06:20,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-10-17 11:06:20,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:06:20,142 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 11:06:20,147 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-10-17 11:06:20,148 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 11:06:20,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 11:06:20 BasicIcfg [2022-10-17 11:06:20,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 11:06:20,160 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 11:06:20,160 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 11:06:20,160 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 11:06:20,161 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:06:18" (3/4) ... [2022-10-17 11:06:20,164 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 11:06:20,170 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-10-17 11:06:20,170 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-10-17 11:06:20,176 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-10-17 11:06:20,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-10-17 11:06:20,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 11:06:20,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 11:06:20,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 11:06:20,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 11:06:20,227 INFO L158 Benchmark]: Toolchain (without parser) took 3313.05ms. Allocated memory was 88.1MB in the beginning and 132.1MB in the end (delta: 44.0MB). Free memory was 62.8MB in the beginning and 94.9MB in the end (delta: -32.1MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2022-10-17 11:06:20,227 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 88.1MB. Free memory was 59.3MB in the beginning and 59.3MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:06:20,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 721.22ms. Allocated memory is still 88.1MB. Free memory was 62.6MB in the beginning and 43.8MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-10-17 11:06:20,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.82ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 43.8MB in the beginning and 84.1MB in the end (delta: -40.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-10-17 11:06:20,229 INFO L158 Benchmark]: Boogie Preprocessor took 48.92ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 84.3MB in the end (delta: -223.7kB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2022-10-17 11:06:20,229 INFO L158 Benchmark]: RCFGBuilder took 583.92ms. Allocated memory is still 109.1MB. Free memory was 84.3MB in the beginning and 69.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 11:06:20,230 INFO L158 Benchmark]: TraceAbstraction took 1824.51ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 68.4MB in the beginning and 97.0MB in the end (delta: -28.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:06:20,230 INFO L158 Benchmark]: Witness Printer took 66.26ms. Allocated memory is still 132.1MB. Free memory was 97.0MB in the beginning and 94.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:06:20,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 88.1MB. Free memory was 59.3MB in the beginning and 59.3MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 721.22ms. Allocated memory is still 88.1MB. Free memory was 62.6MB in the beginning and 43.8MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.82ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 43.8MB in the beginning and 84.1MB in the end (delta: -40.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.92ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 84.3MB in the end (delta: -223.7kB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * RCFGBuilder took 583.92ms. Allocated memory is still 109.1MB. Free memory was 84.3MB in the beginning and 69.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1824.51ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 68.4MB in the beginning and 97.0MB in the end (delta: -28.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 66.26ms. Allocated memory is still 132.1MB. Free memory was 97.0MB in the beginning and 94.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 966]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 133 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 6 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 0.7s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-17 11:06:20,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1568331-e64b-41de-85e2-467c2ed5e077/bin/uautomizer-J5u9QxTXDZ/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 Result: TRUE