./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy8.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy8.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47144ed0d9aa05bca24cc8eb2abad54106f6919871c7945daa183bed78f0ad25 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:24:52,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:52,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:52,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:52,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:52,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:52,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:52,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:52,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:52,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:52,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:52,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:52,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:52,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:52,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:52,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:52,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:52,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:52,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:52,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:52,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:52,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:52,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:52,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:52,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:52,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:52,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:52,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:52,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:52,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:52,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:52,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:52,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:52,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:52,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:52,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:52,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:52,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:52,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:52,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:52,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:52,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:24:52,708 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:52,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:52,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:52,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:52,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:52,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:52,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:52,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:52,713 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:52,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:52,714 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:24:52,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:24:52,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:24:52,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:52,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:52,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:52,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:52,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:24:52,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:52,716 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:52,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:52,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:52,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:52,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:52,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:52,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:52,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:52,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:52,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:24:52,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:24:52,719 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:24:52,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:24:52,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:52,720 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_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47144ed0d9aa05bca24cc8eb2abad54106f6919871c7945daa183bed78f0ad25 [2022-11-02 20:24:53,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:53,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:53,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:53,188 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:53,189 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:53,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/test-easy8.wvr.c [2022-11-02 20:24:53,297 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/data/b8cfd0a55/ca256d6c57204e6390c17c18ccfbf4b0/FLAG68d5db050 [2022-11-02 20:24:53,988 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:53,990 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/sv-benchmarks/c/weaver/test-easy8.wvr.c [2022-11-02 20:24:54,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/data/b8cfd0a55/ca256d6c57204e6390c17c18ccfbf4b0/FLAG68d5db050 [2022-11-02 20:24:54,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/data/b8cfd0a55/ca256d6c57204e6390c17c18ccfbf4b0 [2022-11-02 20:24:54,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:54,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:54,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:54,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:54,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:54,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23117fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54, skipping insertion in model container [2022-11-02 20:24:54,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:54,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:54,639 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_d7127e45-60db-4719-b1fc-3dc1c94f5182/sv-benchmarks/c/weaver/test-easy8.wvr.c[1981,1994] [2022-11-02 20:24:54,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:54,658 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:54,699 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_d7127e45-60db-4719-b1fc-3dc1c94f5182/sv-benchmarks/c/weaver/test-easy8.wvr.c[1981,1994] [2022-11-02 20:24:54,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:54,731 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:24:54,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54 WrapperNode [2022-11-02 20:24:54,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:54,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:54,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:24:54,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:24:54,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,791 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-11-02 20:24:54,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:54,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:24:54,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:24:54,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:24:54,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,828 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:24:54,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:24:54,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:24:54,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:24:54,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:54,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:54,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:24:54,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:24:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:24:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:24:54,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:24:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:24:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:24:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:24:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:24:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:24:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:24:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:24:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:24:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:24:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:24:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:24:54,944 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:24:55,104 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:24:55,110 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:24:55,401 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:24:55,448 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:24:55,456 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:24:55,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:55 BoogieIcfgContainer [2022-11-02 20:24:55,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:24:55,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:24:55,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:24:55,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:24:55,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:54" (1/3) ... [2022-11-02 20:24:55,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ab7a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:55, skipping insertion in model container [2022-11-02 20:24:55,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (2/3) ... [2022-11-02 20:24:55,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ab7a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:55, skipping insertion in model container [2022-11-02 20:24:55,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:55" (3/3) ... [2022-11-02 20:24:55,473 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy8.wvr.c [2022-11-02 20:24:55,485 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:24:55,499 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:24:55,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:24:55,500 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:24:55,620 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:24:55,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 72 transitions, 160 flow [2022-11-02 20:24:55,738 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2022-11-02 20:24:55,739 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:24:55,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 2/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-11-02 20:24:55,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 72 transitions, 160 flow [2022-11-02 20:24:55,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 61 transitions, 134 flow [2022-11-02 20:24:55,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:55,770 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;@4ac2419d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:55,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:24:55,798 INFO L130 PetriNetUnfolder]: 2/60 cut-off events. [2022-11-02 20:24:55,799 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:24:55,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:55,800 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] [2022-11-02 20:24:55,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:24:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:55,808 INFO L85 PathProgramCache]: Analyzing trace with hash 387238928, now seen corresponding path program 1 times [2022-11-02 20:24:55,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:55,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926625821] [2022-11-02 20:24:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:55,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:56,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:56,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926625821] [2022-11-02 20:24:56,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926625821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:56,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:56,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:56,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410966140] [2022-11-02 20:24:56,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:56,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:56,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:56,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:56,956 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 72 [2022-11-02 20:24:56,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:56,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:56,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 72 [2022-11-02 20:24:56,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:57,265 INFO L130 PetriNetUnfolder]: 12/108 cut-off events. [2022-11-02 20:24:57,267 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-02 20:24:57,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 108 events. 12/108 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 264 event pairs, 5 based on Foata normal form. 5/106 useless extension candidates. Maximal degree in co-relation 117. Up to 21 conditions per place. [2022-11-02 20:24:57,273 INFO L137 encePairwiseOnDemand]: 64/72 looper letters, 16 selfloop transitions, 1 changer transitions 10/72 dead transitions. [2022-11-02 20:24:57,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 214 flow [2022-11-02 20:24:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:24:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:24:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 479 transitions. [2022-11-02 20:24:57,303 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8315972222222222 [2022-11-02 20:24:57,304 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 479 transitions. [2022-11-02 20:24:57,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 479 transitions. [2022-11-02 20:24:57,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:57,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 479 transitions. [2022-11-02 20:24:57,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.875) internal successors, (479), 8 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,340 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,343 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 134 flow. Second operand 8 states and 479 transitions. [2022-11-02 20:24:57,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 214 flow [2022-11-02 20:24:57,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:24:57,352 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 129 flow [2022-11-02 20:24:57,354 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=129, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2022-11-02 20:24:57,360 INFO L287 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2022-11-02 20:24:57,361 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 129 flow [2022-11-02 20:24:57,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:57,362 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] [2022-11-02 20:24:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:24:57,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:24:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1966506618, now seen corresponding path program 2 times [2022-11-02 20:24:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:57,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558055292] [2022-11-02 20:24:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:57,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:57,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558055292] [2022-11-02 20:24:57,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558055292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:57,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:57,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:57,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772069309] [2022-11-02 20:24:57,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:57,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:57,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:57,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:57,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:57,607 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 72 [2022-11-02 20:24:57,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:57,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 72 [2022-11-02 20:24:57,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:57,701 INFO L130 PetriNetUnfolder]: 2/71 cut-off events. [2022-11-02 20:24:57,701 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-02 20:24:57,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 71 events. 2/71 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 1 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 74. Up to 9 conditions per place. [2022-11-02 20:24:57,702 INFO L137 encePairwiseOnDemand]: 68/72 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2022-11-02 20:24:57,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 150 flow [2022-11-02 20:24:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:24:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 293 transitions. [2022-11-02 20:24:57,704 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8138888888888889 [2022-11-02 20:24:57,704 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 293 transitions. [2022-11-02 20:24:57,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 293 transitions. [2022-11-02 20:24:57,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:57,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 293 transitions. [2022-11-02 20:24:57,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,709 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,709 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 129 flow. Second operand 5 states and 293 transitions. [2022-11-02 20:24:57,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 150 flow [2022-11-02 20:24:57,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 143 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-02 20:24:57,712 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2022-11-02 20:24:57,712 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2022-11-02 20:24:57,727 INFO L287 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2022-11-02 20:24:57,727 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2022-11-02 20:24:57,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-02 20:24:57,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-02 20:24:57,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-02 20:24:57,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:24:57,733 INFO L444 BasicCegarLoop]: Path program histogram: [2] [2022-11-02 20:24:57,737 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:24:57,738 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:24:57,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:24:57 BasicIcfg [2022-11-02 20:24:57,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:24:57,746 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:24:57,746 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:24:57,746 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:24:57,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:55" (3/4) ... [2022-11-02 20:24:57,751 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:24:57,758 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 20:24:57,759 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 20:24:57,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-02 20:24:57,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:24:57,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:24:57,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:24:57,806 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:24:57,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:24:57,807 INFO L158 Benchmark]: Toolchain (without parser) took 3498.25ms. Allocated memory is still 125.8MB. Free memory was 90.4MB in the beginning and 55.7MB in the end (delta: 34.7MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2022-11-02 20:24:57,808 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 53.3MB in the beginning and 53.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:24:57,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.81ms. Allocated memory is still 125.8MB. Free memory was 90.4MB in the beginning and 100.1MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:24:57,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.03ms. Allocated memory is still 125.8MB. Free memory was 99.6MB in the beginning and 98.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:24:57,810 INFO L158 Benchmark]: Boogie Preprocessor took 39.87ms. Allocated memory is still 125.8MB. Free memory was 98.4MB in the beginning and 97.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:24:57,810 INFO L158 Benchmark]: RCFGBuilder took 626.92ms. Allocated memory is still 125.8MB. Free memory was 97.1MB in the beginning and 84.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:24:57,811 INFO L158 Benchmark]: TraceAbstraction took 2281.86ms. Allocated memory is still 125.8MB. Free memory was 83.7MB in the beginning and 57.8MB in the end (delta: 25.9MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-11-02 20:24:57,811 INFO L158 Benchmark]: Witness Printer took 60.89ms. Allocated memory is still 125.8MB. Free memory was 57.8MB in the beginning and 55.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:24:57,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 53.3MB in the beginning and 53.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.81ms. Allocated memory is still 125.8MB. Free memory was 90.4MB in the beginning and 100.1MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.03ms. Allocated memory is still 125.8MB. Free memory was 99.6MB in the beginning and 98.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.87ms. Allocated memory is still 125.8MB. Free memory was 98.4MB in the beginning and 97.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 626.92ms. Allocated memory is still 125.8MB. Free memory was 97.1MB in the beginning and 84.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2281.86ms. Allocated memory is still 125.8MB. Free memory was 83.7MB in the beginning and 57.8MB in the end (delta: 25.9MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Witness Printer took 60.89ms. Allocated memory is still 125.8MB. Free memory was 57.8MB in the beginning and 55.7MB 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: 75]: 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, 88 locations, 3 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: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 71 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 16 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 182 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! [2022-11-02 20:24:57,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7127e45-60db-4719-b1fc-3dc1c94f5182/bin/uautomizer-Dbtcem3rbc/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