./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD --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 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:58:32,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:58:32,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:58:32,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:58:32,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:58:32,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:58:32,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:58:32,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:58:32,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:58:32,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:58:32,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:58:32,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:58:32,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:58:32,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:58:32,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:58:32,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:58:32,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:58:32,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:58:32,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:58:32,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:58:32,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:58:32,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:58:32,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:58:32,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:58:32,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:58:32,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:58:32,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:58:32,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:58:32,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:58:32,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:58:32,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:58:32,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:58:32,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:58:32,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:58:32,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:58:32,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:58:32,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:58:32,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:58:32,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:58:32,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:58:32,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:58:32,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:58:32,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:58:32,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:58:32,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:58:32,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:58:32,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:58:32,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:58:32,183 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:58:32,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:58:32,183 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:58:32,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:58:32,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:58:32,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:58:32,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:58:32,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:58:32,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:58:32,185 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:58:32,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:58:32,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:58:32,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:58:32,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:58:32,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:58:32,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:58:32,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:58:32,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:58:32,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:58:32,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:58:32,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:58:32,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:58:32,188 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:58:32,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:58:32,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:58:32,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:58:32,189 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_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 [2021-10-28 22:58:32,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:58:32,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:58:32,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:58:32,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:58:32,601 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:58:32,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2021-10-28 22:58:32,705 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/data/109d7bac1/271d8d29a4cb4b7c872296be52b915ee/FLAG4dcb26350 [2021-10-28 22:58:33,371 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:58:33,372 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2021-10-28 22:58:33,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/data/109d7bac1/271d8d29a4cb4b7c872296be52b915ee/FLAG4dcb26350 [2021-10-28 22:58:33,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/data/109d7bac1/271d8d29a4cb4b7c872296be52b915ee [2021-10-28 22:58:33,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:58:33,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:58:33,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:58:33,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:58:33,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:58:33,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:58:33" (1/1) ... [2021-10-28 22:58:33,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2458400c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:33, skipping insertion in model container [2021-10-28 22:58:33,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:58:33" (1/1) ... [2021-10-28 22:58:33,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:58:33,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:58:34,041 WARN L228 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_d998e8f2-1c51-4135-a5c0-f18cfac191d2/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2021-10-28 22:58:34,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:58:34,056 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:58:34,080 WARN L228 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_d998e8f2-1c51-4135-a5c0-f18cfac191d2/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2021-10-28 22:58:34,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:58:34,099 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:58:34,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34 WrapperNode [2021-10-28 22:58:34,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:58:34,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:58:34,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:58:34,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:58:34,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (1/1) ... [2021-10-28 22:58:34,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (1/1) ... [2021-10-28 22:58:34,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:58:34,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:58:34,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:58:34,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:58:34,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (1/1) ... [2021-10-28 22:58:34,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (1/1) ... [2021-10-28 22:58:34,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (1/1) ... [2021-10-28 22:58:34,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (1/1) ... [2021-10-28 22:58:34,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (1/1) ... [2021-10-28 22:58:34,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (1/1) ... [2021-10-28 22:58:34,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (1/1) ... [2021-10-28 22:58:34,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:58:34,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:58:34,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:58:34,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:58:34,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (1/1) ... [2021-10-28 22:58:34,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:58:34,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:34,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:34,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:58:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 22:58:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 22:58:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 22:58:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 22:58:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:58:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:58:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:58:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 22:58:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 22:58:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:58:34,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:58:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:58:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:58:34,294 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 22:58:34,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:58:34,838 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 22:58:34,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:34 BoogieIcfgContainer [2021-10-28 22:58:34,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:58:34,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:58:34,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:58:34,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:58:34,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:58:33" (1/3) ... [2021-10-28 22:58:34,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563dd6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:58:34, skipping insertion in model container [2021-10-28 22:58:34,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:34" (2/3) ... [2021-10-28 22:58:34,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563dd6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:58:34, skipping insertion in model container [2021-10-28 22:58:34,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:34" (3/3) ... [2021-10-28 22:58:34,857 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2021-10-28 22:58:34,864 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 22:58:34,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:58:34,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 22:58:34,865 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 22:58:34,910 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,910 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,911 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,911 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,911 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,912 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,912 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,912 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,912 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,913 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,913 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,914 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,915 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,915 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,916 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,916 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,916 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,916 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,917 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,917 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,917 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,918 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,921 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,922 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,928 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,929 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,930 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,930 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,931 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,932 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,938 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,938 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,938 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,939 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,939 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,940 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:58:34,953 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 22:58:35,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:58:35,048 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 [2021-10-28 22:58:35,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 22:58:35,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 88 transitions, 192 flow [2021-10-28 22:58:35,174 INFO L129 PetriNetUnfolder]: 2/86 cut-off events. [2021-10-28 22:58:35,174 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 22:58:35,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 2/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2021-10-28 22:58:35,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 88 transitions, 192 flow [2021-10-28 22:58:35,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 78 transitions, 168 flow [2021-10-28 22:58:35,227 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-10-28 22:58:35,228 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 22:58:35,228 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:58:35,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:35,229 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:58:35,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:35,258 INFO L85 PathProgramCache]: Analyzing trace with hash 173769626, now seen corresponding path program 1 times [2021-10-28 22:58:35,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:35,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478122796] [2021-10-28 22:58:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:35,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:36,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:36,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478122796] [2021-10-28 22:58:36,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478122796] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:36,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:36,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 22:58:36,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533437079] [2021-10-28 22:58:36,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:58:36,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:36,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:58:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:58:36,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 88 [2021-10-28 22:58:36,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 168 flow. Second operand has 9 states, 9 states have (on average 60.77777777777778) internal successors, (547), 9 states have internal predecessors, (547), 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) [2021-10-28 22:58:36,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:58:36,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 88 [2021-10-28 22:58:36,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:58:36,800 INFO L129 PetriNetUnfolder]: 21/159 cut-off events. [2021-10-28 22:58:36,800 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-10-28 22:58:36,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 159 events. 21/159 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 380 event pairs, 8 based on Foata normal form. 3/157 useless extension candidates. Maximal degree in co-relation 157. Up to 34 conditions per place. [2021-10-28 22:58:36,806 INFO L132 encePairwiseOnDemand]: 71/88 looper letters, 21 selfloop transitions, 8 changer transitions 14/92 dead transitions. [2021-10-28 22:58:36,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 282 flow [2021-10-28 22:58:36,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:58:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 22:58:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 743 transitions. [2021-10-28 22:58:36,844 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7035984848484849 [2021-10-28 22:58:36,845 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 743 transitions. [2021-10-28 22:58:36,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 743 transitions. [2021-10-28 22:58:36,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:36,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 743 transitions. [2021-10-28 22:58:36,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 61.916666666666664) internal successors, (743), 12 states have internal predecessors, (743), 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) [2021-10-28 22:58:36,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 88.0) internal successors, (1144), 13 states have internal predecessors, (1144), 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) [2021-10-28 22:58:36,873 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 88.0) internal successors, (1144), 13 states have internal predecessors, (1144), 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) [2021-10-28 22:58:36,875 INFO L186 Difference]: Start difference. First operand has 83 places, 78 transitions, 168 flow. Second operand 12 states and 743 transitions. [2021-10-28 22:58:36,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 282 flow [2021-10-28 22:58:36,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 92 transitions, 274 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 22:58:36,883 INFO L242 Difference]: Finished difference. Result has 96 places, 76 transitions, 194 flow [2021-10-28 22:58:36,886 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=194, PETRI_PLACES=96, PETRI_TRANSITIONS=76} [2021-10-28 22:58:36,887 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 13 predicate places. [2021-10-28 22:58:36,887 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 76 transitions, 194 flow [2021-10-28 22:58:36,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 60.77777777777778) internal successors, (547), 9 states have internal predecessors, (547), 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) [2021-10-28 22:58:36,888 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:58:36,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:36,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:58:36,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:58:36,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2025241334, now seen corresponding path program 2 times [2021-10-28 22:58:36,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:36,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262402808] [2021-10-28 22:58:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:36,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:37,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:37,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262402808] [2021-10-28 22:58:37,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262402808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:37,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:37,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 22:58:37,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14371309] [2021-10-28 22:58:37,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:58:37,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:58:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:58:37,110 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 88 [2021-10-28 22:58:37,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 76 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 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) [2021-10-28 22:58:37,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:58:37,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 88 [2021-10-28 22:58:37,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:58:37,272 INFO L129 PetriNetUnfolder]: 6/114 cut-off events. [2021-10-28 22:58:37,272 INFO L130 PetriNetUnfolder]: For 14/19 co-relation queries the response was YES. [2021-10-28 22:58:37,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 114 events. 6/114 cut-off events. For 14/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 2 based on Foata normal form. 3/116 useless extension candidates. Maximal degree in co-relation 183. Up to 13 conditions per place. [2021-10-28 22:58:37,274 INFO L132 encePairwiseOnDemand]: 80/88 looper letters, 20 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2021-10-28 22:58:37,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 86 transitions, 286 flow [2021-10-28 22:58:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:58:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 22:58:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 473 transitions. [2021-10-28 22:58:37,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7678571428571429 [2021-10-28 22:58:37,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 473 transitions. [2021-10-28 22:58:37,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 473 transitions. [2021-10-28 22:58:37,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:37,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 473 transitions. [2021-10-28 22:58:37,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.57142857142857) internal successors, (473), 7 states have internal predecessors, (473), 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) [2021-10-28 22:58:37,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 88.0) internal successors, (704), 8 states have internal predecessors, (704), 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) [2021-10-28 22:58:37,285 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 88.0) internal successors, (704), 8 states have internal predecessors, (704), 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) [2021-10-28 22:58:37,286 INFO L186 Difference]: Start difference. First operand has 96 places, 76 transitions, 194 flow. Second operand 7 states and 473 transitions. [2021-10-28 22:58:37,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 86 transitions, 286 flow [2021-10-28 22:58:37,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 257 flow, removed 7 selfloop flow, removed 9 redundant places. [2021-10-28 22:58:37,291 INFO L242 Difference]: Finished difference. Result has 87 places, 80 transitions, 209 flow [2021-10-28 22:58:37,292 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=209, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2021-10-28 22:58:37,292 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2021-10-28 22:58:37,293 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 209 flow [2021-10-28 22:58:37,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 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) [2021-10-28 22:58:37,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:58:37,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:37,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:58:37,310 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:58:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash -901616718, now seen corresponding path program 3 times [2021-10-28 22:58:37,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:37,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135727407] [2021-10-28 22:58:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:37,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:37,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:37,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135727407] [2021-10-28 22:58:37,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135727407] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:37,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:37,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 22:58:37,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658654707] [2021-10-28 22:58:37,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:58:37,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:37,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:58:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:58:37,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 88 [2021-10-28 22:58:37,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 209 flow. Second operand has 9 states, 9 states have (on average 69.66666666666667) internal successors, (627), 9 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) [2021-10-28 22:58:37,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:58:37,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 88 [2021-10-28 22:58:37,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:58:37,812 INFO L129 PetriNetUnfolder]: 3/123 cut-off events. [2021-10-28 22:58:37,812 INFO L130 PetriNetUnfolder]: For 14/17 co-relation queries the response was YES. [2021-10-28 22:58:37,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 123 events. 3/123 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 244 event pairs, 0 based on Foata normal form. 2/125 useless extension candidates. Maximal degree in co-relation 97. Up to 9 conditions per place. [2021-10-28 22:58:37,815 INFO L132 encePairwiseOnDemand]: 78/88 looper letters, 9 selfloop transitions, 6 changer transitions 9/85 dead transitions. [2021-10-28 22:58:37,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 261 flow [2021-10-28 22:58:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:58:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 22:58:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 701 transitions. [2021-10-28 22:58:37,819 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7965909090909091 [2021-10-28 22:58:37,819 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 701 transitions. [2021-10-28 22:58:37,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 701 transitions. [2021-10-28 22:58:37,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:37,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 701 transitions. [2021-10-28 22:58:37,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 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) [2021-10-28 22:58:37,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 88.0) internal successors, (968), 11 states have internal predecessors, (968), 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) [2021-10-28 22:58:37,828 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 88.0) internal successors, (968), 11 states have internal predecessors, (968), 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) [2021-10-28 22:58:37,828 INFO L186 Difference]: Start difference. First operand has 87 places, 80 transitions, 209 flow. Second operand 10 states and 701 transitions. [2021-10-28 22:58:37,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 261 flow [2021-10-28 22:58:37,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 85 transitions, 254 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 22:58:37,836 INFO L242 Difference]: Finished difference. Result has 97 places, 76 transitions, 199 flow [2021-10-28 22:58:37,837 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=199, PETRI_PLACES=97, PETRI_TRANSITIONS=76} [2021-10-28 22:58:37,837 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 14 predicate places. [2021-10-28 22:58:37,837 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 76 transitions, 199 flow [2021-10-28 22:58:37,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.66666666666667) internal successors, (627), 9 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) [2021-10-28 22:58:37,838 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:58:37,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:37,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:58:37,839 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:58:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash -522526568, now seen corresponding path program 4 times [2021-10-28 22:58:37,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:37,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137910763] [2021-10-28 22:58:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:37,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:38,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:38,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137910763] [2021-10-28 22:58:38,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137910763] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:38,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:38,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 22:58:38,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244187654] [2021-10-28 22:58:38,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:58:38,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:58:38,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:58:38,041 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 88 [2021-10-28 22:58:38,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 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) [2021-10-28 22:58:38,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:58:38,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 88 [2021-10-28 22:58:38,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:58:38,108 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2021-10-28 22:58:38,108 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-10-28 22:58:38,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 56 events. 1/56 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 2/58 useless extension candidates. Maximal degree in co-relation 86. Up to 7 conditions per place. [2021-10-28 22:58:38,110 INFO L132 encePairwiseOnDemand]: 82/88 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2021-10-28 22:58:38,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 55 transitions, 165 flow [2021-10-28 22:58:38,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:58:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 22:58:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 456 transitions. [2021-10-28 22:58:38,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7402597402597403 [2021-10-28 22:58:38,114 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 456 transitions. [2021-10-28 22:58:38,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 456 transitions. [2021-10-28 22:58:38,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:38,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 456 transitions. [2021-10-28 22:58:38,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2021-10-28 22:58:38,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 88.0) internal successors, (704), 8 states have internal predecessors, (704), 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) [2021-10-28 22:58:38,122 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 88.0) internal successors, (704), 8 states have internal predecessors, (704), 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) [2021-10-28 22:58:38,122 INFO L186 Difference]: Start difference. First operand has 97 places, 76 transitions, 199 flow. Second operand 7 states and 456 transitions. [2021-10-28 22:58:38,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 55 transitions, 165 flow [2021-10-28 22:58:38,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 55 transitions, 146 flow, removed 2 selfloop flow, removed 9 redundant places. [2021-10-28 22:58:38,126 INFO L242 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2021-10-28 22:58:38,126 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2021-10-28 22:58:38,127 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -14 predicate places. [2021-10-28 22:58:38,127 INFO L470 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2021-10-28 22:58:38,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 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) [2021-10-28 22:58:38,133 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:38,133 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 22:58:38,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 22:58:38,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 22:58:38,138 INFO L731 BasicCegarLoop]: Path program histogram: [4] [2021-10-28 22:58:38,145 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 22:58:38,146 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:58:38,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:58:38 BasicIcfg [2021-10-28 22:58:38,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:58:38,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:58:38,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:58:38,151 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:58:38,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:34" (3/4) ... [2021-10-28 22:58:38,156 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 22:58:38,165 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 22:58:38,165 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 22:58:38,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 22:58:38,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 22:58:38,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 22:58:38,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 22:58:38,249 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:58:38,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:58:38,251 INFO L168 Benchmark]: Toolchain (without parser) took 4533.49 ms. Allocated memory was 100.7 MB in the beginning and 142.6 MB in the end (delta: 41.9 MB). Free memory was 64.5 MB in the beginning and 71.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,252 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory was 80.7 MB in the beginning and 80.6 MB in the end (delta: 68.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:58:38,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.59 ms. Allocated memory is still 100.7 MB. Free memory was 64.3 MB in the beginning and 76.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.34 ms. Allocated memory is still 100.7 MB. Free memory was 76.2 MB in the beginning and 74.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:58:38,256 INFO L168 Benchmark]: Boogie Preprocessor took 32.46 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 73.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,257 INFO L168 Benchmark]: RCFGBuilder took 656.39 ms. Allocated memory is still 100.7 MB. Free memory was 73.4 MB in the beginning and 58.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,257 INFO L168 Benchmark]: TraceAbstraction took 3306.27 ms. Allocated memory was 100.7 MB in the beginning and 142.6 MB in the end (delta: 41.9 MB). Free memory was 57.8 MB in the beginning and 74.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,258 INFO L168 Benchmark]: Witness Printer took 98.74 ms. Allocated memory is still 142.6 MB. Free memory was 74.5 MB in the beginning and 71.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory was 80.7 MB in the beginning and 80.6 MB in the end (delta: 68.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.59 ms. Allocated memory is still 100.7 MB. Free memory was 64.3 MB in the beginning and 76.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.34 ms. Allocated memory is still 100.7 MB. Free memory was 76.2 MB in the beginning and 74.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.46 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 73.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 656.39 ms. Allocated memory is still 100.7 MB. Free memory was 73.4 MB in the beginning and 58.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3306.27 ms. Allocated memory was 100.7 MB in the beginning and 142.6 MB in the end (delta: 41.9 MB). Free memory was 57.8 MB in the beginning and 74.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. * Witness Printer took 98.74 ms. Allocated memory is still 142.6 MB. Free memory was 74.5 MB in the beginning and 71.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * 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: 102]: 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, 104 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: 3.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 67 SDslu, 89 SDs, 0 SdLazy, 221 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=2, InterpolantAutomatonStates: 36, 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, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 292 ConstructedInterpolants, 0 QuantifiedInterpolants, 1064 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! [2021-10-28 22:58:38,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d998e8f2-1c51-4135-a5c0-f18cfac191d2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...