./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro --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 c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 --- 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-8393723 [2022-11-18 20:51:21,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:51:21,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:51:21,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:51:21,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:51:21,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:51:21,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:51:21,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:51:21,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:51:21,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:51:21,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:51:21,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:51:21,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:51:21,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:51:21,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:51:21,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:51:21,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:51:21,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:51:21,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:51:21,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:51:21,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:51:21,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:51:21,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:51:21,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:51:21,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:51:21,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:51:21,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:51:21,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:51:21,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:51:21,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:51:21,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:51:21,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:51:21,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:51:21,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:51:21,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:51:21,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:51:21,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:51:21,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:51:21,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:51:21,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:51:21,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:51:21,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:51:21,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:51:21,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:51:21,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:51:21,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:51:21,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:51:21,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:51:21,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:51:21,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:51:21,898 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:51:21,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:51:21,899 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:51:21,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:51:21,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:51:21,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:51:21,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:51:21,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:51:21,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:51:21,901 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:51:21,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:51:21,901 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:51:21,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:51:21,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:51:21,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:51:21,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:51:21,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:51:21,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:51:21,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:51:21,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:51:21,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:51:21,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:51:21,904 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:51:21,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:51:21,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:51:21,905 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_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2022-11-18 20:51:22,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:51:22,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:51:22,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:51:22,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:51:22,157 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:51:22,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-11-18 20:51:22,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/data/82b4c1854/15e6dd9d1c3e4d679c697f0479a43891/FLAGbdd32828a [2022-11-18 20:51:22,693 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:51:22,699 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-11-18 20:51:22,706 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/data/82b4c1854/15e6dd9d1c3e4d679c697f0479a43891/FLAGbdd32828a [2022-11-18 20:51:23,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/data/82b4c1854/15e6dd9d1c3e4d679c697f0479a43891 [2022-11-18 20:51:23,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:51:23,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:51:23,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:51:23,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:51:23,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:51:23,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a7096d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23, skipping insertion in model container [2022-11-18 20:51:23,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:51:23,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:51:23,383 WARN L234 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_fa82edda-660a-41af-b58f-c60725f0b1a9/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2022-11-18 20:51:23,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:51:23,399 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:51:23,435 WARN L234 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_fa82edda-660a-41af-b58f-c60725f0b1a9/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2022-11-18 20:51:23,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:51:23,452 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:51:23,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23 WrapperNode [2022-11-18 20:51:23,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:51:23,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:51:23,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:51:23,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:51:23,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,504 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-11-18 20:51:23,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:51:23,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:51:23,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:51:23,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:51:23,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,540 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:51:23,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:51:23,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:51:23,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:51:23,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (1/1) ... [2022-11-18 20:51:23,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:51:23,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:51:23,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:51:23,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:51:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:51:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:51:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:51:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:51:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:51:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:51:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:51:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:51:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:51:23,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:51:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:51:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:51:23,635 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:51:23,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:51:23,778 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:51:23,995 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:51:24,002 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:51:24,005 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:51:24,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:24 BoogieIcfgContainer [2022-11-18 20:51:24,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:51:24,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:51:24,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:51:24,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:51:24,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:51:23" (1/3) ... [2022-11-18 20:51:24,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca35887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:24, skipping insertion in model container [2022-11-18 20:51:24,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:23" (2/3) ... [2022-11-18 20:51:24,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca35887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:24, skipping insertion in model container [2022-11-18 20:51:24,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:24" (3/3) ... [2022-11-18 20:51:24,016 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2022-11-18 20:51:24,025 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:51:24,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:51:24,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:51:24,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:51:24,087 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:51:24,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 82 transitions, 180 flow [2022-11-18 20:51:24,174 INFO L130 PetriNetUnfolder]: 3/80 cut-off events. [2022-11-18 20:51:24,175 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:51:24,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 3/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-11-18 20:51:24,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 82 transitions, 180 flow [2022-11-18 20:51:24,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 71 transitions, 154 flow [2022-11-18 20:51:24,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:51:24,217 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;@7f72743b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:51:24,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 20:51:24,272 INFO L130 PetriNetUnfolder]: 3/70 cut-off events. [2022-11-18 20:51:24,274 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:51:24,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:24,276 INFO L209 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] [2022-11-18 20:51:24,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:24,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:24,283 INFO L85 PathProgramCache]: Analyzing trace with hash -143169160, now seen corresponding path program 1 times [2022-11-18 20:51:24,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:24,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339423397] [2022-11-18 20:51:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:24,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:26,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:26,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339423397] [2022-11-18 20:51:26,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339423397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:26,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:26,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:51:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827862940] [2022-11-18 20:51:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:26,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:51:26,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:51:26,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:51:26,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 82 [2022-11-18 20:51:26,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 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) [2022-11-18 20:51:26,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:26,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 82 [2022-11-18 20:51:26,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:28,172 INFO L130 PetriNetUnfolder]: 2/107 cut-off events. [2022-11-18 20:51:28,172 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:51:28,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 107 events. 2/107 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 6/108 useless extension candidates. Maximal degree in co-relation 37. Up to 19 conditions per place. [2022-11-18 20:51:28,174 INFO L137 encePairwiseOnDemand]: 65/82 looper letters, 23 selfloop transitions, 1 changer transitions 21/86 dead transitions. [2022-11-18 20:51:28,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 283 flow [2022-11-18 20:51:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:51:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:51:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 817 transitions. [2022-11-18 20:51:28,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6642276422764227 [2022-11-18 20:51:28,205 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 817 transitions. [2022-11-18 20:51:28,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 817 transitions. [2022-11-18 20:51:28,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:28,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 817 transitions. [2022-11-18 20:51:28,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.46666666666667) internal successors, (817), 15 states have internal predecessors, (817), 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) [2022-11-18 20:51:28,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 82.0) internal successors, (1312), 16 states have internal predecessors, (1312), 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) [2022-11-18 20:51:28,236 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 82.0) internal successors, (1312), 16 states have internal predecessors, (1312), 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) [2022-11-18 20:51:28,237 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 154 flow. Second operand 15 states and 817 transitions. [2022-11-18 20:51:28,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 283 flow [2022-11-18 20:51:28,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 269 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:51:28,252 INFO L231 Difference]: Finished difference. Result has 95 places, 65 transitions, 157 flow [2022-11-18 20:51:28,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=157, PETRI_PLACES=95, PETRI_TRANSITIONS=65} [2022-11-18 20:51:28,259 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 20 predicate places. [2022-11-18 20:51:28,260 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 65 transitions, 157 flow [2022-11-18 20:51:28,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 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) [2022-11-18 20:51:28,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:28,262 INFO L209 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] [2022-11-18 20:51:28,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:51:28,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:51:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2083743358, now seen corresponding path program 2 times [2022-11-18 20:51:28,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:28,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780546177] [2022-11-18 20:51:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:28,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:29,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:29,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780546177] [2022-11-18 20:51:29,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780546177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:29,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:29,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:51:29,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707573724] [2022-11-18 20:51:29,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:29,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:51:29,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:29,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:51:29,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:51:29,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 82 [2022-11-18 20:51:29,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 65 transitions, 157 flow. Second operand has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 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) [2022-11-18 20:51:29,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:29,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 82 [2022-11-18 20:51:29,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:30,286 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-18 20:51:30,286 INFO L131 PetriNetUnfolder]: For 11/14 co-relation queries the response was YES. [2022-11-18 20:51:30,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 72 events. 1/72 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 1 based on Foata normal form. 3/74 useless extension candidates. Maximal degree in co-relation 114. Up to 13 conditions per place. [2022-11-18 20:51:30,287 INFO L137 encePairwiseOnDemand]: 71/82 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2022-11-18 20:51:30,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 64 transitions, 207 flow [2022-11-18 20:51:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:51:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:51:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 638 transitions. [2022-11-18 20:51:30,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6483739837398373 [2022-11-18 20:51:30,290 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 638 transitions. [2022-11-18 20:51:30,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 638 transitions. [2022-11-18 20:51:30,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:30,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 638 transitions. [2022-11-18 20:51:30,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.166666666666664) internal successors, (638), 12 states have internal predecessors, (638), 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) [2022-11-18 20:51:30,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 82.0) internal successors, (1066), 13 states have internal predecessors, (1066), 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) [2022-11-18 20:51:30,296 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 82.0) internal successors, (1066), 13 states have internal predecessors, (1066), 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) [2022-11-18 20:51:30,296 INFO L175 Difference]: Start difference. First operand has 95 places, 65 transitions, 157 flow. Second operand 12 states and 638 transitions. [2022-11-18 20:51:30,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 64 transitions, 207 flow [2022-11-18 20:51:30,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 189 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-11-18 20:51:30,298 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2022-11-18 20:51:30,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2022-11-18 20:51:30,299 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2022-11-18 20:51:30,300 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2022-11-18 20:51:30,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 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) [2022-11-18 20:51:30,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-18 20:51:30,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-18 20:51:30,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-18 20:51:30,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:51:30,304 INFO L444 BasicCegarLoop]: Path program histogram: [2] [2022-11-18 20:51:30,308 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:51:30,309 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:51:30,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:51:30 BasicIcfg [2022-11-18 20:51:30,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:51:30,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:51:30,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:51:30,315 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:51:30,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:24" (3/4) ... [2022-11-18 20:51:30,319 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:51:30,325 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:51:30,325 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:51:30,329 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-18 20:51:30,330 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:51:30,330 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:51:30,330 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:51:30,364 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:51:30,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:51:30,365 INFO L158 Benchmark]: Toolchain (without parser) took 7284.13ms. Allocated memory was 146.8MB in the beginning and 224.4MB in the end (delta: 77.6MB). Free memory was 114.8MB in the beginning and 185.6MB in the end (delta: -70.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2022-11-18 20:51:30,365 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:51:30,365 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.61ms. Allocated memory is still 146.8MB. Free memory was 114.4MB in the beginning and 120.2MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:51:30,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.23ms. Allocated memory is still 146.8MB. Free memory was 120.2MB in the beginning and 118.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:51:30,366 INFO L158 Benchmark]: Boogie Preprocessor took 37.76ms. Allocated memory is still 146.8MB. Free memory was 118.5MB in the beginning and 117.6MB in the end (delta: 881.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:51:30,366 INFO L158 Benchmark]: RCFGBuilder took 464.00ms. Allocated memory is still 146.8MB. Free memory was 117.6MB in the beginning and 105.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 20:51:30,367 INFO L158 Benchmark]: TraceAbstraction took 6305.09ms. Allocated memory was 146.8MB in the beginning and 224.4MB in the end (delta: 77.6MB). Free memory was 104.7MB in the beginning and 188.7MB in the end (delta: -84.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:51:30,367 INFO L158 Benchmark]: Witness Printer took 49.25ms. Allocated memory is still 224.4MB. Free memory was 188.7MB in the beginning and 185.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:51:30,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.61ms. Allocated memory is still 146.8MB. Free memory was 114.4MB in the beginning and 120.2MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.23ms. Allocated memory is still 146.8MB. Free memory was 120.2MB in the beginning and 118.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.76ms. Allocated memory is still 146.8MB. Free memory was 118.5MB in the beginning and 117.6MB in the end (delta: 881.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 464.00ms. Allocated memory is still 146.8MB. Free memory was 117.6MB in the beginning and 105.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6305.09ms. Allocated memory was 146.8MB in the beginning and 224.4MB in the end (delta: 77.6MB). Free memory was 104.7MB in the beginning and 188.7MB in the end (delta: -84.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 49.25ms. Allocated memory is still 224.4MB. Free memory was 188.7MB in the beginning and 185.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: 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, 90 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: 6.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 111 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 197 IncrementalHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 23 mSDtfsCounter, 197 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=1, InterpolantAutomatonStates: 27, 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, 2.9s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 2372 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! [2022-11-18 20:51:30,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa82edda-660a-41af-b58f-c60725f0b1a9/bin/uautomizer-TMbwUNV5ro/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