./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe036.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe036.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF --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 1118c32f43b2d6844c8e6b0e5b4fae8199d058f7b991e3c8d975cf675dc5221a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:59:38,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:59:38,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:59:38,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:59:38,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:59:38,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:59:38,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:59:38,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:59:38,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:59:38,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:59:38,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:59:38,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:59:38,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:59:38,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:59:38,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:59:38,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:59:38,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:59:38,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:59:38,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:59:38,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:59:38,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:59:38,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:59:38,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:59:38,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:59:38,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:59:38,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:59:38,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:59:38,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:59:38,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:59:38,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:59:38,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:59:38,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:59:38,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:59:38,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:59:38,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:59:38,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:59:38,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:59:38,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:59:38,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:59:38,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:59:38,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:59:38,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:59:38,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:59:38,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:59:38,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:59:38,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:59:38,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:59:38,347 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:59:38,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:59:38,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:59:38,348 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:59:38,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:59:38,349 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:59:38,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:59:38,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:59:38,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:59:38,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:59:38,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:59:38,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:59:38,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:59:38,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:59:38,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:59:38,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:59:38,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:59:38,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:59:38,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:59:38,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:59:38,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:59:38,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:59:38,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:59:38,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:59:38,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:59:38,353 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:59:38,353 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:59:38,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:59:38,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:59:38,356 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_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1118c32f43b2d6844c8e6b0e5b4fae8199d058f7b991e3c8d975cf675dc5221a [2021-11-20 06:59:38,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:59:38,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:59:38,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:59:38,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:59:38,699 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:59:38,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/pthread-wmm/safe036.i [2021-11-20 06:59:38,811 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/data/21adba5c5/5830a5818e904f10984b39fcc0322d3d/FLAGefb191480 [2021-11-20 06:59:39,424 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:59:39,429 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/sv-benchmarks/c/pthread-wmm/safe036.i [2021-11-20 06:59:39,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/data/21adba5c5/5830a5818e904f10984b39fcc0322d3d/FLAGefb191480 [2021-11-20 06:59:39,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/data/21adba5c5/5830a5818e904f10984b39fcc0322d3d [2021-11-20 06:59:39,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:59:39,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:59:39,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:59:39,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:59:39,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:59:39,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:39" (1/1) ... [2021-11-20 06:59:39,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d07e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:39, skipping insertion in model container [2021-11-20 06:59:39,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:39" (1/1) ... [2021-11-20 06:59:39,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:59:39,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:59:39,994 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/sv-benchmarks/c/pthread-wmm/safe036.i[941,954] [2021-11-20 06:59:40,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:59:40,189 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:59:40,211 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/sv-benchmarks/c/pthread-wmm/safe036.i[941,954] [2021-11-20 06:59:40,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:59:40,332 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:59:40,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40 WrapperNode [2021-11-20 06:59:40,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:59:40,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:59:40,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:59:40,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:59:40,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (1/1) ... [2021-11-20 06:59:40,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (1/1) ... [2021-11-20 06:59:40,386 INFO L137 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2021-11-20 06:59:40,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:59:40,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:59:40,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:59:40,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:59:40,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (1/1) ... [2021-11-20 06:59:40,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (1/1) ... [2021-11-20 06:59:40,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (1/1) ... [2021-11-20 06:59:40,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (1/1) ... [2021-11-20 06:59:40,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (1/1) ... [2021-11-20 06:59:40,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (1/1) ... [2021-11-20 06:59:40,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (1/1) ... [2021-11-20 06:59:40,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:59:40,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:59:40,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:59:40,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:59:40,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (1/1) ... [2021-11-20 06:59:40,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:59:40,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:59:40,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:59:40,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:59:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:59:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 06:59:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:59:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:59:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:59:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-20 06:59:40,546 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-20 06:59:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-20 06:59:40,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-20 06:59:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:59:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 06:59:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:59:40,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:59:40,550 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 06:59:40,759 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:59:40,761 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:59:41,002 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:59:41,016 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:59:41,016 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:59:41,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:41 BoogieIcfgContainer [2021-11-20 06:59:41,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:59:41,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:59:41,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:59:41,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:59:41,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:59:39" (1/3) ... [2021-11-20 06:59:41,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56916e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:59:41, skipping insertion in model container [2021-11-20 06:59:41,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:40" (2/3) ... [2021-11-20 06:59:41,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56916e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:59:41, skipping insertion in model container [2021-11-20 06:59:41,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:41" (3/3) ... [2021-11-20 06:59:41,031 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036.i [2021-11-20 06:59:41,040 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 06:59:41,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:59:41,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:59:41,041 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 06:59:41,081 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,081 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,081 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,081 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,082 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,082 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,082 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,083 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,085 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,085 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,085 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,085 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,087 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,088 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,088 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,088 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,088 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,088 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,089 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,089 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,090 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,090 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,091 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,092 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,102 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,102 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,102 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,103 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,107 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,107 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,107 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,108 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:59:41,111 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-20 06:59:41,197 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:59:41,226 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:59:41,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 06:59:41,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 75 transitions, 160 flow [2021-11-20 06:59:41,293 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-11-20 06:59:41,293 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 06:59:41,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2021-11-20 06:59:41,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 75 transitions, 160 flow [2021-11-20 06:59:41,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 61 transitions, 128 flow [2021-11-20 06:59:41,325 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-11-20 06:59:41,326 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 06:59:41,326 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:41,327 INFO L254 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] [2021-11-20 06:59:41,328 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:41,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2129458235, now seen corresponding path program 1 times [2021-11-20 06:59:41,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:41,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201196056] [2021-11-20 06:59:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:41,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:41,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:41,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201196056] [2021-11-20 06:59:41,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201196056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:41,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:41,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:59:41,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166436336] [2021-11-20 06:59:41,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:41,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:59:41,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:41,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:59:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:59:41,998 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2021-11-20 06:59:42,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2021-11-20 06:59:42,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:42,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2021-11-20 06:59:42,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:42,292 INFO L129 PetriNetUnfolder]: 31/154 cut-off events. [2021-11-20 06:59:42,302 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-20 06:59:42,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 154 events. 31/154 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 499 event pairs, 0 based on Foata normal form. 7/157 useless extension candidates. Maximal degree in co-relation 208. Up to 26 conditions per place. [2021-11-20 06:59:42,309 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 11 selfloop transitions, 5 changer transitions 20/84 dead transitions. [2021-11-20 06:59:42,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 84 transitions, 249 flow [2021-11-20 06:59:42,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:59:42,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 06:59:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 641 transitions. [2021-11-20 06:59:42,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8546666666666667 [2021-11-20 06:59:42,339 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 641 transitions. [2021-11-20 06:59:42,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 641 transitions. [2021-11-20 06:59:42,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:42,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 641 transitions. [2021-11-20 06:59:42,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 64.1) internal successors, (641), 10 states have internal predecessors, (641), 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) [2021-11-20 06:59:42,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2021-11-20 06:59:42,369 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2021-11-20 06:59:42,372 INFO L186 Difference]: Start difference. First operand has 67 places, 61 transitions, 128 flow. Second operand 10 states and 641 transitions. [2021-11-20 06:59:42,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 84 transitions, 249 flow [2021-11-20 06:59:42,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 84 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 06:59:42,382 INFO L242 Difference]: Finished difference. Result has 80 places, 61 transitions, 166 flow [2021-11-20 06:59:42,385 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2021-11-20 06:59:42,390 INFO L334 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2021-11-20 06:59:42,390 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 166 flow [2021-11-20 06:59:42,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2021-11-20 06:59:42,391 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:42,391 INFO L254 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] [2021-11-20 06:59:42,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:59:42,392 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:42,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:42,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1247322809, now seen corresponding path program 1 times [2021-11-20 06:59:42,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:42,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778892744] [2021-11-20 06:59:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:42,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:42,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:42,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778892744] [2021-11-20 06:59:42,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778892744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:42,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:42,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:59:42,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606821428] [2021-11-20 06:59:42,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:42,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:59:42,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:59:42,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:59:42,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2021-11-20 06:59:42,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 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) [2021-11-20 06:59:42,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:42,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2021-11-20 06:59:42,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:42,996 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2021-11-20 06:59:42,996 INFO L130 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2021-11-20 06:59:42,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 93 events. 9/93 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 3/95 useless extension candidates. Maximal degree in co-relation 183. Up to 18 conditions per place. [2021-11-20 06:59:43,000 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 7 selfloop transitions, 7 changer transitions 11/73 dead transitions. [2021-11-20 06:59:43,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 73 transitions, 285 flow [2021-11-20 06:59:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:59:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 06:59:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 627 transitions. [2021-11-20 06:59:43,008 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.836 [2021-11-20 06:59:43,008 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 627 transitions. [2021-11-20 06:59:43,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 627 transitions. [2021-11-20 06:59:43,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:43,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 627 transitions. [2021-11-20 06:59:43,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.7) internal successors, (627), 10 states have internal predecessors, (627), 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) [2021-11-20 06:59:43,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2021-11-20 06:59:43,023 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2021-11-20 06:59:43,023 INFO L186 Difference]: Start difference. First operand has 80 places, 61 transitions, 166 flow. Second operand 10 states and 627 transitions. [2021-11-20 06:59:43,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 73 transitions, 285 flow [2021-11-20 06:59:43,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 73 transitions, 250 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-11-20 06:59:43,038 INFO L242 Difference]: Finished difference. Result has 84 places, 61 transitions, 182 flow [2021-11-20 06:59:43,039 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=182, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2021-11-20 06:59:43,042 INFO L334 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2021-11-20 06:59:43,042 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 182 flow [2021-11-20 06:59:43,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 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) [2021-11-20 06:59:43,043 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:43,044 INFO L254 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] [2021-11-20 06:59:43,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:59:43,046 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1480585093, now seen corresponding path program 1 times [2021-11-20 06:59:43,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:43,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222943120] [2021-11-20 06:59:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:43,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:43,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:43,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222943120] [2021-11-20 06:59:43,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222943120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:43,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:43,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:59:43,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042695875] [2021-11-20 06:59:43,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:43,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:59:43,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:59:43,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:59:43,257 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 75 [2021-11-20 06:59:43,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2021-11-20 06:59:43,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:43,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 75 [2021-11-20 06:59:43,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:43,444 INFO L129 PetriNetUnfolder]: 5/100 cut-off events. [2021-11-20 06:59:43,444 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2021-11-20 06:59:43,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 100 events. 5/100 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 165 event pairs, 0 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 163. Up to 14 conditions per place. [2021-11-20 06:59:43,445 INFO L132 encePairwiseOnDemand]: 68/75 looper letters, 14 selfloop transitions, 3 changer transitions 4/68 dead transitions. [2021-11-20 06:59:43,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 68 transitions, 240 flow [2021-11-20 06:59:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:59:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 06:59:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 421 transitions. [2021-11-20 06:59:43,449 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8019047619047619 [2021-11-20 06:59:43,449 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 421 transitions. [2021-11-20 06:59:43,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 421 transitions. [2021-11-20 06:59:43,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:43,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 421 transitions. [2021-11-20 06:59:43,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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) [2021-11-20 06:59:43,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2021-11-20 06:59:43,456 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2021-11-20 06:59:43,456 INFO L186 Difference]: Start difference. First operand has 84 places, 61 transitions, 182 flow. Second operand 7 states and 421 transitions. [2021-11-20 06:59:43,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 68 transitions, 240 flow [2021-11-20 06:59:43,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 194 flow, removed 13 selfloop flow, removed 13 redundant places. [2021-11-20 06:59:43,461 INFO L242 Difference]: Finished difference. Result has 78 places, 63 transitions, 163 flow [2021-11-20 06:59:43,462 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=163, PETRI_PLACES=78, PETRI_TRANSITIONS=63} [2021-11-20 06:59:43,463 INFO L334 CegarLoopForPetriNet]: 67 programPoint places, 11 predicate places. [2021-11-20 06:59:43,463 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 63 transitions, 163 flow [2021-11-20 06:59:43,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2021-11-20 06:59:43,464 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:43,464 INFO L254 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] [2021-11-20 06:59:43,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:59:43,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:43,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:43,465 INFO L85 PathProgramCache]: Analyzing trace with hash 20372485, now seen corresponding path program 2 times [2021-11-20 06:59:43,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:43,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793401477] [2021-11-20 06:59:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:43,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:43,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:43,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793401477] [2021-11-20 06:59:43,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793401477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:43,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:43,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:59:43,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129202992] [2021-11-20 06:59:43,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:43,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:59:43,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:43,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:59:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:59:43,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 75 [2021-11-20 06:59:43,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 63 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2021-11-20 06:59:43,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:43,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 75 [2021-11-20 06:59:43,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:43,799 INFO L129 PetriNetUnfolder]: 5/97 cut-off events. [2021-11-20 06:59:43,800 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-11-20 06:59:43,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 97 events. 5/97 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 177 event pairs, 1 based on Foata normal form. 1/97 useless extension candidates. Maximal degree in co-relation 155. Up to 10 conditions per place. [2021-11-20 06:59:43,802 INFO L132 encePairwiseOnDemand]: 68/75 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2021-11-20 06:59:43,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 63 transitions, 201 flow [2021-11-20 06:59:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:59:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 06:59:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 415 transitions. [2021-11-20 06:59:43,806 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7904761904761904 [2021-11-20 06:59:43,807 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 415 transitions. [2021-11-20 06:59:43,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 415 transitions. [2021-11-20 06:59:43,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:43,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 415 transitions. [2021-11-20 06:59:43,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 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) [2021-11-20 06:59:43,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2021-11-20 06:59:43,813 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2021-11-20 06:59:43,813 INFO L186 Difference]: Start difference. First operand has 78 places, 63 transitions, 163 flow. Second operand 7 states and 415 transitions. [2021-11-20 06:59:43,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 63 transitions, 201 flow [2021-11-20 06:59:43,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 63 transitions, 196 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-20 06:59:43,818 INFO L242 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2021-11-20 06:59:43,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2021-11-20 06:59:43,821 INFO L334 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2021-11-20 06:59:43,821 INFO L470 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2021-11-20 06:59:43,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2021-11-20 06:59:43,825 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-20 06:59:43,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-20 06:59:43,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-20 06:59:43,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:59:43,836 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-20 06:59:43,839 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-20 06:59:43,839 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:59:43,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:59:43 BasicIcfg [2021-11-20 06:59:43,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:59:43,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:59:43,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:59:43,848 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:59:43,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:41" (3/4) ... [2021-11-20 06:59:43,852 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 06:59:43,861 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-20 06:59:43,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-20 06:59:43,869 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-20 06:59:43,869 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 06:59:43,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 06:59:43,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 06:59:43,912 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:59:43,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:59:43,913 INFO L158 Benchmark]: Toolchain (without parser) took 4231.02ms. Allocated memory was 81.8MB in the beginning and 140.5MB in the end (delta: 58.7MB). Free memory was 41.4MB in the beginning and 55.0MB in the end (delta: -13.6MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2021-11-20 06:59:43,914 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 81.8MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:59:43,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 634.74ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 41.2MB in the beginning and 67.1MB in the end (delta: -25.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2021-11-20 06:59:43,915 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.53ms. Allocated memory is still 102.8MB. Free memory was 66.7MB in the beginning and 65.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:59:43,916 INFO L158 Benchmark]: Boogie Preprocessor took 42.10ms. Allocated memory is still 102.8MB. Free memory was 65.0MB in the beginning and 63.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:59:43,916 INFO L158 Benchmark]: RCFGBuilder took 589.59ms. Allocated memory is still 102.8MB. Free memory was 63.7MB in the beginning and 52.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:59:43,917 INFO L158 Benchmark]: TraceAbstraction took 2823.67ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 51.8MB in the beginning and 57.1MB in the end (delta: -5.2MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2021-11-20 06:59:43,918 INFO L158 Benchmark]: Witness Printer took 65.14ms. Allocated memory is still 140.5MB. Free memory was 57.1MB in the beginning and 55.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:59:43,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 81.8MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 634.74ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 41.2MB in the beginning and 67.1MB in the end (delta: -25.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.53ms. Allocated memory is still 102.8MB. Free memory was 66.7MB in the beginning and 65.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.10ms. Allocated memory is still 102.8MB. Free memory was 65.0MB in the beginning and 63.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 589.59ms. Allocated memory is still 102.8MB. Free memory was 63.7MB in the beginning and 52.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2823.67ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 51.8MB in the beginning and 57.1MB in the end (delta: -5.2MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Witness Printer took 65.14ms. Allocated memory is still 140.5MB. Free memory was 57.1MB in the beginning and 55.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 135 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 171 IncrementalHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 31 mSDtfsCounter, 171 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=2, InterpolantAutomatonStates: 34, 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, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 672 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2021-11-20 06:59:43,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070edc3a-b891-4862-8a77-178b555f361c/bin/uautomizer-DQz5hQGWxF/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