./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:18:55,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:18:55,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:18:55,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:18:55,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:18:55,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:18:55,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:18:55,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:18:55,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:18:55,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:18:55,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:18:55,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:18:55,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:18:55,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:18:55,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:18:55,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:18:55,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:18:55,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:18:55,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:18:55,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:18:55,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:18:55,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:18:55,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:18:55,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:18:55,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:18:55,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:18:55,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:18:55,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:18:55,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:18:55,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:18:55,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:18:55,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:18:55,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:18:55,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:18:55,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:18:55,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:18:55,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:18:55,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:18:55,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:18:55,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:18:55,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:18:55,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:18:55,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:18:55,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:18:55,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:18:55,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:18:55,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:18:55,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:18:55,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:18:55,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:18:55,145 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:18:55,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:18:55,145 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:18:55,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:18:55,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:18:55,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:18:55,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:18:55,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:18:55,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:18:55,146 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:18:55,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:18:55,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:18:55,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:18:55,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:18:55,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:18:55,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:18:55,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:18:55,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:18:55,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:18:55,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:18:55,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:18:55,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:18:55,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:18:55,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:18:55,149 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:18:55,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:18:55,150 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:18:55,150 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac [2022-12-13 13:18:55,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:18:55,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:18:55,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:18:55,384 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:18:55,384 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:18:55,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-12-13 13:18:58,036 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:18:58,157 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:18:58,158 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-12-13 13:18:58,164 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/data/cd22a0cfe/614a7d6ea8434f53af725cddf7df467f/FLAG3cabfe564 [2022-12-13 13:18:58,176 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/data/cd22a0cfe/614a7d6ea8434f53af725cddf7df467f [2022-12-13 13:18:58,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:18:58,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:18:58,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:18:58,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:18:58,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:18:58,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b077248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58, skipping insertion in model container [2022-12-13 13:18:58,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:18:58,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:18:58,319 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-12-13 13:18:58,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:18:58,331 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:18:58,347 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-12-13 13:18:58,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:18:58,359 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:18:58,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58 WrapperNode [2022-12-13 13:18:58,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:18:58,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:18:58,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:18:58,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:18:58,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,388 INFO L138 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 148 [2022-12-13 13:18:58,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:18:58,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:18:58,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:18:58,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:18:58,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,404 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:18:58,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:18:58,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:18:58,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:18:58,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (1/1) ... [2022-12-13 13:18:58,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:18:58,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:18:58,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:18:58,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:18:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:18:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 13:18:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 13:18:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 13:18:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 13:18:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:18:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:18:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:18:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:18:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:18:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:18:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:18:58,471 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:18:58,545 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:18:58,547 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:18:58,783 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:18:58,793 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:18:58,793 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:18:58,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:18:58 BoogieIcfgContainer [2022-12-13 13:18:58,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:18:58,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:18:58,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:18:58,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:18:58,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:18:58" (1/3) ... [2022-12-13 13:18:58,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4f0bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:18:58, skipping insertion in model container [2022-12-13 13:18:58,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:18:58" (2/3) ... [2022-12-13 13:18:58,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4f0bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:18:58, skipping insertion in model container [2022-12-13 13:18:58,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:18:58" (3/3) ... [2022-12-13 13:18:58,804 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-12-13 13:18:58,813 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:18:58,824 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:18:58,824 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:18:58,824 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:18:58,887 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 13:18:58,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 212 transitions, 440 flow [2022-12-13 13:18:59,006 INFO L130 PetriNetUnfolder]: 11/210 cut-off events. [2022-12-13 13:18:59,006 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:18:59,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 210 events. 11/210 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 160 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2022-12-13 13:18:59,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 212 transitions, 440 flow [2022-12-13 13:18:59,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 201 transitions, 414 flow [2022-12-13 13:18:59,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:18:59,028 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 201 transitions, 414 flow [2022-12-13 13:18:59,030 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 201 transitions, 414 flow [2022-12-13 13:18:59,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 201 transitions, 414 flow [2022-12-13 13:18:59,071 INFO L130 PetriNetUnfolder]: 11/201 cut-off events. [2022-12-13 13:18:59,071 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:18:59,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 201 events. 11/201 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2022-12-13 13:18:59,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 8732 [2022-12-13 13:19:03,574 INFO L134 LiptonReduction]: Checked pairs total: 7628 [2022-12-13 13:19:03,574 INFO L136 LiptonReduction]: Total number of compositions: 241 [2022-12-13 13:19:03,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:19:03,591 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;@5147aaa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:19:03,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 13:19:03,594 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2022-12-13 13:19:03,595 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:19:03,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:19:03,595 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:03,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 13:19:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2005057485, now seen corresponding path program 1 times [2022-12-13 13:19:03,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:03,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568080047] [2022-12-13 13:19:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:03,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:04,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:04,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568080047] [2022-12-13 13:19:04,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568080047] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:04,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:04,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:19:04,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883902870] [2022-12-13 13:19:04,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:04,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:19:04,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:04,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:19:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:19:04,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 453 [2022-12-13 13:19:04,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:19:04,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 453 [2022-12-13 13:19:04,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:19:04,491 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2022-12-13 13:19:04,491 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 13:19:04,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 32 events. 8/32 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 45. Up to 16 conditions per place. [2022-12-13 13:19:04,492 INFO L137 encePairwiseOnDemand]: 449/453 looper letters, 10 selfloop transitions, 3 changer transitions 8/21 dead transitions. [2022-12-13 13:19:04,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 21 transitions, 105 flow [2022-12-13 13:19:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:19:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:19:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 922 transitions. [2022-12-13 13:19:04,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40706401766004413 [2022-12-13 13:19:04,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 922 transitions. [2022-12-13 13:19:04,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 922 transitions. [2022-12-13 13:19:04,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:19:04,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 922 transitions. [2022-12-13 13:19:04,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.4) internal successors, (922), 5 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,521 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,522 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 34 flow. Second operand 5 states and 922 transitions. [2022-12-13 13:19:04,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 21 transitions, 105 flow [2022-12-13 13:19:04,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 91 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 13:19:04,526 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 34 flow [2022-12-13 13:19:04,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2022-12-13 13:19:04,530 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2022-12-13 13:19:04,530 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 34 flow [2022-12-13 13:19:04,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:19:04,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:04,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:19:04,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 13:19:04,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:04,531 INFO L85 PathProgramCache]: Analyzing trace with hash 856524627, now seen corresponding path program 2 times [2022-12-13 13:19:04,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:04,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899175831] [2022-12-13 13:19:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:04,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:04,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:04,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899175831] [2022-12-13 13:19:04,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899175831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:04,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:04,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:19:04,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914716626] [2022-12-13 13:19:04,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:04,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:19:04,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:04,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:19:04,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:19:04,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 453 [2022-12-13 13:19:04,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:19:04,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 453 [2022-12-13 13:19:04,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:19:05,056 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 13:19:05,056 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:19:05,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 35. Up to 6 conditions per place. [2022-12-13 13:19:05,056 INFO L137 encePairwiseOnDemand]: 449/453 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2022-12-13 13:19:05,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 58 flow [2022-12-13 13:19:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:19:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:19:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 913 transitions. [2022-12-13 13:19:05,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4030905077262693 [2022-12-13 13:19:05,060 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 913 transitions. [2022-12-13 13:19:05,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 913 transitions. [2022-12-13 13:19:05,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:19:05,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 913 transitions. [2022-12-13 13:19:05,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,065 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,065 INFO L175 Difference]: Start difference. First operand has 19 places, 11 transitions, 34 flow. Second operand 5 states and 913 transitions. [2022-12-13 13:19:05,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 58 flow [2022-12-13 13:19:05,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:19:05,066 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2022-12-13 13:19:05,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2022-12-13 13:19:05,067 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2022-12-13 13:19:05,067 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2022-12-13 13:19:05,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 13:19:05,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 13:19:05,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 13:19:05,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:19:05,071 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2022-12-13 13:19:05,074 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:19:05,074 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:19:05,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:19:05 BasicIcfg [2022-12-13 13:19:05,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:19:05,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:19:05,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:19:05,077 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:19:05,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:18:58" (3/4) ... [2022-12-13 13:19:05,080 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 13:19:05,084 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 13:19:05,084 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 13:19:05,087 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-13 13:19:05,087 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 13:19:05,088 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 13:19:05,088 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 13:19:05,113 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 13:19:05,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:19:05,113 INFO L158 Benchmark]: Toolchain (without parser) took 6934.01ms. Allocated memory was 134.2MB in the beginning and 199.2MB in the end (delta: 65.0MB). Free memory was 100.0MB in the beginning and 78.4MB in the end (delta: 21.7MB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. [2022-12-13 13:19:05,113 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:19:05,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.83ms. Allocated memory is still 134.2MB. Free memory was 99.6MB in the beginning and 88.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 13:19:05,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.39ms. Allocated memory is still 134.2MB. Free memory was 88.7MB in the beginning and 86.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:19:05,114 INFO L158 Benchmark]: Boogie Preprocessor took 17.93ms. Allocated memory is still 134.2MB. Free memory was 86.6MB in the beginning and 85.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:19:05,115 INFO L158 Benchmark]: RCFGBuilder took 388.48ms. Allocated memory is still 134.2MB. Free memory was 85.0MB in the beginning and 67.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 13:19:05,115 INFO L158 Benchmark]: TraceAbstraction took 6278.44ms. Allocated memory was 134.2MB in the beginning and 199.2MB in the end (delta: 65.0MB). Free memory was 66.9MB in the beginning and 81.5MB in the end (delta: -14.6MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. [2022-12-13 13:19:05,115 INFO L158 Benchmark]: Witness Printer took 36.03ms. Allocated memory is still 199.2MB. Free memory was 81.5MB in the beginning and 78.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:19:05,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.83ms. Allocated memory is still 134.2MB. Free memory was 99.6MB in the beginning and 88.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.39ms. Allocated memory is still 134.2MB. Free memory was 88.7MB in the beginning and 86.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.93ms. Allocated memory is still 134.2MB. Free memory was 86.6MB in the beginning and 85.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 388.48ms. Allocated memory is still 134.2MB. Free memory was 85.0MB in the beginning and 67.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6278.44ms. Allocated memory was 134.2MB in the beginning and 199.2MB in the end (delta: 65.0MB). Free memory was 66.9MB in the beginning and 81.5MB in the end (delta: -14.6MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. * Witness Printer took 36.03ms. Allocated memory is still 199.2MB. Free memory was 81.5MB in the beginning and 78.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 197 PlacesBefore, 18 PlacesAfterwards, 201 TransitionsBefore, 11 TransitionsAfterwards, 8732 CoEnabledTransitionPairs, 8 FixpointIterations, 67 TrivialSequentialCompositions, 121 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 34 ConcurrentYvCompositions, 11 ChoiceCompositions, 241 TotalNumberOfCompositions, 7628 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7628, independent: 7628, independent conditional: 0, independent unconditional: 7628, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5145, independent: 5145, independent conditional: 0, independent unconditional: 5145, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7628, independent: 2483, independent conditional: 0, independent unconditional: 2483, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 5145, unknown conditional: 0, unknown unconditional: 5145] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 77]: 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, 316 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: 6.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 174 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 5 mSDtfsCounter, 174 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 739 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! [2022-12-13 13:19:05,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_294a7dce-f322-4f72-90ac-5be5256033a6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE