./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY --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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:22:35,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:22:35,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:22:35,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:22:35,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:22:35,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:22:35,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:22:35,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:22:35,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:22:35,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:22:35,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:22:35,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:22:35,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:22:35,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:22:35,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:22:35,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:22:35,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:22:35,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:22:35,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:22:35,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:22:35,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:22:35,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:22:35,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:22:35,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:22:35,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:22:35,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:22:35,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:22:35,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:22:35,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:22:35,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:22:35,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:22:35,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:22:35,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:22:35,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:22:35,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:22:35,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:22:35,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:22:35,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:22:35,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:22:35,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:22:35,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:22:35,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:22:35,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:22:35,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:22:35,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:22:35,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:22:35,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:22:35,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:22:35,235 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:22:35,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:22:35,236 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:22:35,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:22:35,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:22:35,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:22:35,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:22:35,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:22:35,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:22:35,239 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:22:35,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:22:35,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:22:35,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:22:35,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:22:35,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:22:35,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:22:35,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:35,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:22:35,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:22:35,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:22:35,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:22:35,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:22:35,243 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:22:35,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:22:35,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:22:35,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:22:35,246 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_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2021-11-07 07:22:35,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:22:35,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:22:35,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:22:35,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:22:35,675 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:22:35,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2021-11-07 07:22:35,758 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/data/169d5f93e/9575615f615e456f8346b8628f4aca79/FLAG9a59cdd86 [2021-11-07 07:22:36,422 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:22:36,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2021-11-07 07:22:36,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/data/169d5f93e/9575615f615e456f8346b8628f4aca79/FLAG9a59cdd86 [2021-11-07 07:22:36,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/data/169d5f93e/9575615f615e456f8346b8628f4aca79 [2021-11-07 07:22:36,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:22:36,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:22:36,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:36,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:22:36,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:22:36,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:36" (1/1) ... [2021-11-07 07:22:36,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b109288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:36, skipping insertion in model container [2021-11-07 07:22:36,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:36" (1/1) ... [2021-11-07 07:22:36,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:22:36,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:22:37,201 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_0f8a24dd-cc18-44b9-a0db-1a0074f17188/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2021-11-07 07:22:37,219 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_0f8a24dd-cc18-44b9-a0db-1a0074f17188/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2021-11-07 07:22:37,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:37,244 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:22:37,305 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_0f8a24dd-cc18-44b9-a0db-1a0074f17188/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2021-11-07 07:22:37,308 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_0f8a24dd-cc18-44b9-a0db-1a0074f17188/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2021-11-07 07:22:37,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:37,350 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:22:37,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37 WrapperNode [2021-11-07 07:22:37,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:37,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:37,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:22:37,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:22:37,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (1/1) ... [2021-11-07 07:22:37,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (1/1) ... [2021-11-07 07:22:37,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:37,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:22:37,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:22:37,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:22:37,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (1/1) ... [2021-11-07 07:22:37,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (1/1) ... [2021-11-07 07:22:37,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (1/1) ... [2021-11-07 07:22:37,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (1/1) ... [2021-11-07 07:22:37,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (1/1) ... [2021-11-07 07:22:37,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (1/1) ... [2021-11-07 07:22:37,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (1/1) ... [2021-11-07 07:22:37,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:22:37,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:22:37,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:22:37,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:22:37,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (1/1) ... [2021-11-07 07:22:37,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:37,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:37,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:37,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:22:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:22:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-11-07 07:22:37,538 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-11-07 07:22:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-11-07 07:22:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-11-07 07:22:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:22:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-07 07:22:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:22:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:22:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 07:22:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:22:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:22:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:22:37,542 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 07:22:38,112 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:22:38,112 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 07:22:38,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:38 BoogieIcfgContainer [2021-11-07 07:22:38,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:22:38,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:22:38,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:22:38,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:22:38,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:22:36" (1/3) ... [2021-11-07 07:22:38,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a81bad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:38, skipping insertion in model container [2021-11-07 07:22:38,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:37" (2/3) ... [2021-11-07 07:22:38,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a81bad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:38, skipping insertion in model container [2021-11-07 07:22:38,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:38" (3/3) ... [2021-11-07 07:22:38,125 INFO L111 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2021-11-07 07:22:38,131 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 07:22:38,132 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:22:38,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 07:22:38,132 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 07:22:38,167 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,167 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,167 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,168 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,168 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,168 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,169 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,169 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,169 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,169 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,170 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,170 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,170 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,171 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,171 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,171 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,171 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,172 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,172 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,172 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,172 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,173 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,173 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,173 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,173 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,174 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,174 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,174 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,175 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,175 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,175 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,175 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,176 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,176 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,176 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_insertLogElement_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,176 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_insertLogElement_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,177 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,177 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,177 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,177 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,178 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,178 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_insertLogElement_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,178 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,178 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_insertLogElement_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,179 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,179 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,179 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_insertLogElement_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,180 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_insertLogElement_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,180 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,180 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,181 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,181 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,181 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,181 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,182 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,182 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,182 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_insertLogElement_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,183 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,183 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_insertLogElement_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,183 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,183 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,184 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,185 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,185 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,186 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,186 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,186 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,186 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,187 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,187 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,187 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,187 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,188 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,188 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,188 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,188 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,189 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,189 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,189 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,189 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,190 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,190 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,190 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,191 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,191 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,191 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,192 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,192 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,192 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,192 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,193 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,193 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,193 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,193 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,194 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,194 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,194 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,195 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,195 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,196 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,196 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,196 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,196 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,197 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,197 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,197 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,198 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,198 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,198 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,198 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,199 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,199 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,199 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,228 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,229 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,229 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,229 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,230 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,230 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,230 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,230 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,231 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,231 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,231 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,231 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,232 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,232 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,232 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,232 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,233 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,233 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,233 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,233 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,234 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,238 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,238 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,238 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,239 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,239 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,239 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,240 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,240 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,240 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,240 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,241 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,245 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,272 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,272 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,273 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,273 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,273 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,273 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,274 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_insertLogElement_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,274 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,274 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,274 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:38,281 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-07 07:22:38,338 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:22:38,346 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 [2021-11-07 07:22:38,346 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 07:22:38,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 292 flow [2021-11-07 07:22:38,431 INFO L129 PetriNetUnfolder]: 10/136 cut-off events. [2021-11-07 07:22:38,432 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 07:22:38,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 136 events. 10/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 253 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2021-11-07 07:22:38,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 138 transitions, 292 flow [2021-11-07 07:22:38,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 127 transitions, 263 flow [2021-11-07 07:22:38,483 INFO L129 PetriNetUnfolder]: 5/102 cut-off events. [2021-11-07 07:22:38,483 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-07 07:22:38,484 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:38,485 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] [2021-11-07 07:22:38,485 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:22:38,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1090877766, now seen corresponding path program 1 times [2021-11-07 07:22:38,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:38,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768254875] [2021-11-07 07:22:38,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:38,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:38,732 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:38,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177099394] [2021-11-07 07:22:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:38,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:38,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:38,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:38,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:22:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:38,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:22:38,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:39,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:39,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768254875] [2021-11-07 07:22:39,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:39,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177099394] [2021-11-07 07:22:39,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177099394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:39,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:39,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:22:39,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447778282] [2021-11-07 07:22:39,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:39,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:39,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:39,605 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 138 [2021-11-07 07:22:39,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 127 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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) [2021-11-07 07:22:39,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:39,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 138 [2021-11-07 07:22:39,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:40,987 INFO L129 PetriNetUnfolder]: 52/332 cut-off events. [2021-11-07 07:22:40,988 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-11-07 07:22:40,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 332 events. 52/332 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1368 event pairs, 4 based on Foata normal form. 29/314 useless extension candidates. Maximal degree in co-relation 354. Up to 38 conditions per place. [2021-11-07 07:22:40,995 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 18 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2021-11-07 07:22:40,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 127 transitions, 303 flow [2021-11-07 07:22:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-07 07:22:41,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 505 transitions. [2021-11-07 07:22:41,012 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9148550724637681 [2021-11-07 07:22:41,013 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 505 transitions. [2021-11-07 07:22:41,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 505 transitions. [2021-11-07 07:22:41,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:41,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 505 transitions. [2021-11-07 07:22:41,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 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) [2021-11-07 07:22:41,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2021-11-07 07:22:41,031 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2021-11-07 07:22:41,033 INFO L186 Difference]: Start difference. First operand has 124 places, 127 transitions, 263 flow. Second operand 4 states and 505 transitions. [2021-11-07 07:22:41,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 127 transitions, 303 flow [2021-11-07 07:22:41,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 127 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-07 07:22:41,042 INFO L242 Difference]: Finished difference. Result has 122 places, 121 transitions, 257 flow [2021-11-07 07:22:41,044 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2021-11-07 07:22:41,045 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, -2 predicate places. [2021-11-07 07:22:41,045 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 257 flow [2021-11-07 07:22:41,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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) [2021-11-07 07:22:41,046 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:41,046 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] [2021-11-07 07:22:41,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:41,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:41,262 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:22:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1936762047, now seen corresponding path program 1 times [2021-11-07 07:22:41,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:41,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872299725] [2021-11-07 07:22:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:41,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:41,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:41,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872299725] [2021-11-07 07:22:41,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872299725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:41,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:41,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:41,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673821417] [2021-11-07 07:22:41,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:41,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:41,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:41,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:41,485 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 138 [2021-11-07 07:22:41,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2021-11-07 07:22:41,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:41,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 138 [2021-11-07 07:22:41,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:41,587 INFO L129 PetriNetUnfolder]: 32/359 cut-off events. [2021-11-07 07:22:41,587 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-07 07:22:41,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 359 events. 32/359 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1267 event pairs, 3 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 361. Up to 23 conditions per place. [2021-11-07 07:22:41,596 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 5 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2021-11-07 07:22:41,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 123 transitions, 277 flow [2021-11-07 07:22:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 07:22:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2021-11-07 07:22:41,602 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2021-11-07 07:22:41,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2021-11-07 07:22:41,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2021-11-07 07:22:41,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:41,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2021-11-07 07:22:41,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2021-11-07 07:22:41,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-11-07 07:22:41,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-11-07 07:22:41,609 INFO L186 Difference]: Start difference. First operand has 122 places, 121 transitions, 257 flow. Second operand 3 states and 387 transitions. [2021-11-07 07:22:41,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 123 transitions, 277 flow [2021-11-07 07:22:41,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 123 transitions, 277 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-07 07:22:41,617 INFO L242 Difference]: Finished difference. Result has 125 places, 122 transitions, 272 flow [2021-11-07 07:22:41,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2021-11-07 07:22:41,618 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 1 predicate places. [2021-11-07 07:22:41,618 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 272 flow [2021-11-07 07:22:41,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2021-11-07 07:22:41,619 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:41,619 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:41,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:22:41,620 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:22:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash 878988179, now seen corresponding path program 1 times [2021-11-07 07:22:41,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:41,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571836224] [2021-11-07 07:22:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:41,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:41,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:41,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571836224] [2021-11-07 07:22:41,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571836224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:41,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:41,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:41,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224710617] [2021-11-07 07:22:41,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:41,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:41,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:41,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:41,758 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 138 [2021-11-07 07:22:41,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2021-11-07 07:22:41,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:41,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 138 [2021-11-07 07:22:41,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:41,850 INFO L129 PetriNetUnfolder]: 25/339 cut-off events. [2021-11-07 07:22:41,850 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-11-07 07:22:41,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 339 events. 25/339 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1261 event pairs, 5 based on Foata normal form. 8/327 useless extension candidates. Maximal degree in co-relation 355. Up to 23 conditions per place. [2021-11-07 07:22:41,854 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 10 selfloop transitions, 4 changer transitions 0/122 dead transitions. [2021-11-07 07:22:41,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 122 transitions, 300 flow [2021-11-07 07:22:41,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 07:22:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2021-11-07 07:22:41,857 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.893719806763285 [2021-11-07 07:22:41,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2021-11-07 07:22:41,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2021-11-07 07:22:41,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:41,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2021-11-07 07:22:41,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2021-11-07 07:22:41,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-11-07 07:22:41,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-11-07 07:22:41,862 INFO L186 Difference]: Start difference. First operand has 125 places, 122 transitions, 272 flow. Second operand 3 states and 370 transitions. [2021-11-07 07:22:41,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 122 transitions, 300 flow [2021-11-07 07:22:41,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 122 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-07 07:22:41,868 INFO L242 Difference]: Finished difference. Result has 126 places, 122 transitions, 277 flow [2021-11-07 07:22:41,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=126, PETRI_TRANSITIONS=122} [2021-11-07 07:22:41,869 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 2 predicate places. [2021-11-07 07:22:41,869 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 122 transitions, 277 flow [2021-11-07 07:22:41,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2021-11-07 07:22:41,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:41,870 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:41,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:22:41,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:22:41,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1738492730, now seen corresponding path program 1 times [2021-11-07 07:22:41,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:41,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605360493] [2021-11-07 07:22:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:41,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:42,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:42,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605360493] [2021-11-07 07:22:42,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605360493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:42,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:42,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 07:22:42,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067430980] [2021-11-07 07:22:42,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:22:42,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:22:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:42,117 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 138 [2021-11-07 07:22:42,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 122 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 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) [2021-11-07 07:22:42,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:42,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 138 [2021-11-07 07:22:42,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:42,233 INFO L129 PetriNetUnfolder]: 16/242 cut-off events. [2021-11-07 07:22:42,233 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-11-07 07:22:42,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 242 events. 16/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 606 event pairs, 2 based on Foata normal form. 2/230 useless extension candidates. Maximal degree in co-relation 258. Up to 21 conditions per place. [2021-11-07 07:22:42,236 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 13 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2021-11-07 07:22:42,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 123 transitions, 315 flow [2021-11-07 07:22:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:22:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-07 07:22:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 715 transitions. [2021-11-07 07:22:42,240 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8635265700483091 [2021-11-07 07:22:42,240 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 715 transitions. [2021-11-07 07:22:42,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 715 transitions. [2021-11-07 07:22:42,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:42,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 715 transitions. [2021-11-07 07:22:42,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 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) [2021-11-07 07:22:42,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 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) [2021-11-07 07:22:42,247 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 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) [2021-11-07 07:22:42,247 INFO L186 Difference]: Start difference. First operand has 126 places, 122 transitions, 277 flow. Second operand 6 states and 715 transitions. [2021-11-07 07:22:42,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 123 transitions, 315 flow [2021-11-07 07:22:42,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 123 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-07 07:22:42,252 INFO L242 Difference]: Finished difference. Result has 131 places, 122 transitions, 287 flow [2021-11-07 07:22:42,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=131, PETRI_TRANSITIONS=122} [2021-11-07 07:22:42,253 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 7 predicate places. [2021-11-07 07:22:42,253 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 122 transitions, 287 flow [2021-11-07 07:22:42,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 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) [2021-11-07 07:22:42,254 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:42,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:42,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:22:42,255 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:22:42,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1081195693, now seen corresponding path program 1 times [2021-11-07 07:22:42,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:42,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078982519] [2021-11-07 07:22:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:42,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:42,278 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:42,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343553230] [2021-11-07 07:22:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:42,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:42,282 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:42,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:22:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:42,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 07:22:42,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:43,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:43,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078982519] [2021-11-07 07:22:43,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:43,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343553230] [2021-11-07 07:22:43,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343553230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:43,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:43,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 07:22:43,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779276876] [2021-11-07 07:22:43,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:22:43,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:22:43,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:22:43,321 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 138 [2021-11-07 07:22:43,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 122 transitions, 287 flow. Second operand has 8 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 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) [2021-11-07 07:22:43,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:43,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 138 [2021-11-07 07:22:43,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:43,519 INFO L129 PetriNetUnfolder]: 20/303 cut-off events. [2021-11-07 07:22:43,520 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-11-07 07:22:43,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 303 events. 20/303 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 840 event pairs, 3 based on Foata normal form. 2/287 useless extension candidates. Maximal degree in co-relation 338. Up to 24 conditions per place. [2021-11-07 07:22:43,523 INFO L132 encePairwiseOnDemand]: 129/138 looper letters, 21 selfloop transitions, 8 changer transitions 0/130 dead transitions. [2021-11-07 07:22:43,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 130 transitions, 365 flow [2021-11-07 07:22:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:22:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-07 07:22:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 927 transitions. [2021-11-07 07:22:43,544 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8396739130434783 [2021-11-07 07:22:43,544 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 927 transitions. [2021-11-07 07:22:43,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 927 transitions. [2021-11-07 07:22:43,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:43,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 927 transitions. [2021-11-07 07:22:43,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.875) internal successors, (927), 8 states have internal predecessors, (927), 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) [2021-11-07 07:22:43,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 138.0) internal successors, (1242), 9 states have internal predecessors, (1242), 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) [2021-11-07 07:22:43,555 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 138.0) internal successors, (1242), 9 states have internal predecessors, (1242), 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) [2021-11-07 07:22:43,555 INFO L186 Difference]: Start difference. First operand has 131 places, 122 transitions, 287 flow. Second operand 8 states and 927 transitions. [2021-11-07 07:22:43,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 130 transitions, 365 flow [2021-11-07 07:22:43,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 355 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-07 07:22:43,564 INFO L242 Difference]: Finished difference. Result has 134 places, 124 transitions, 310 flow [2021-11-07 07:22:43,565 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=310, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2021-11-07 07:22:43,565 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 10 predicate places. [2021-11-07 07:22:43,565 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 310 flow [2021-11-07 07:22:43,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 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) [2021-11-07 07:22:43,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:43,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:43,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:43,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:43,790 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:22:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:43,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1921804924, now seen corresponding path program 1 times [2021-11-07 07:22:43,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:43,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839243664] [2021-11-07 07:22:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:43,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:43,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:43,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526170135] [2021-11-07 07:22:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:43,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:43,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:43,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:43,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:22:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:44,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 07:22:44,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:44,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:22:44,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-07 07:22:44,260 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 07:22:44,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 07:22:44,559 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-07 07:22:44,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-11-07 07:22:44,651 INFO L354 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2021-11-07 07:22:44,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 33 [2021-11-07 07:22:44,894 INFO L354 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2021-11-07 07:22:44,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 26 [2021-11-07 07:22:44,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 07:22:45,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 49 [2021-11-07 07:22:45,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-11-07 07:22:45,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-11-07 07:22:45,356 INFO L354 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2021-11-07 07:22:45,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 22 [2021-11-07 07:22:45,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-07 07:22:45,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2021-11-07 07:22:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:45,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:45,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839243664] [2021-11-07 07:22:45,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:45,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526170135] [2021-11-07 07:22:45,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526170135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:45,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:45,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 07:22:45,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082039185] [2021-11-07 07:22:45,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 07:22:45,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 07:22:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:22:45,765 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 138 [2021-11-07 07:22:45,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 310 flow. Second operand has 16 states, 16 states have (on average 76.6875) internal successors, (1227), 16 states have internal predecessors, (1227), 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) [2021-11-07 07:22:45,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:45,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 138 [2021-11-07 07:22:45,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:48,565 INFO L129 PetriNetUnfolder]: 2896/7504 cut-off events. [2021-11-07 07:22:48,565 INFO L130 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2021-11-07 07:22:48,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13263 conditions, 7504 events. 2896/7504 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 61092 event pairs, 875 based on Foata normal form. 0/6815 useless extension candidates. Maximal degree in co-relation 7745. Up to 1474 conditions per place. [2021-11-07 07:22:48,643 INFO L132 encePairwiseOnDemand]: 117/138 looper letters, 249 selfloop transitions, 55 changer transitions 4/378 dead transitions. [2021-11-07 07:22:48,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 378 transitions, 1446 flow [2021-11-07 07:22:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 07:22:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-07 07:22:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2464 transitions. [2021-11-07 07:22:48,653 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6156921539230384 [2021-11-07 07:22:48,654 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2464 transitions. [2021-11-07 07:22:48,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2464 transitions. [2021-11-07 07:22:48,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:48,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2464 transitions. [2021-11-07 07:22:48,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 84.96551724137932) internal successors, (2464), 29 states have internal predecessors, (2464), 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) [2021-11-07 07:22:48,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 138.0) internal successors, (4140), 30 states have internal predecessors, (4140), 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) [2021-11-07 07:22:48,736 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 138.0) internal successors, (4140), 30 states have internal predecessors, (4140), 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) [2021-11-07 07:22:48,736 INFO L186 Difference]: Start difference. First operand has 134 places, 124 transitions, 310 flow. Second operand 29 states and 2464 transitions. [2021-11-07 07:22:48,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 378 transitions, 1446 flow [2021-11-07 07:22:48,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 378 transitions, 1431 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-11-07 07:22:48,758 INFO L242 Difference]: Finished difference. Result has 178 places, 179 transitions, 709 flow [2021-11-07 07:22:48,759 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=709, PETRI_PLACES=178, PETRI_TRANSITIONS=179} [2021-11-07 07:22:48,759 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 54 predicate places. [2021-11-07 07:22:48,760 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 179 transitions, 709 flow [2021-11-07 07:22:48,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 76.6875) internal successors, (1227), 16 states have internal predecessors, (1227), 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) [2021-11-07 07:22:48,760 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:48,761 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:48,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:48,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:48,970 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:22:48,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:48,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1709408624, now seen corresponding path program 1 times [2021-11-07 07:22:48,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:48,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000295557] [2021-11-07 07:22:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:48,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:49,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:49,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000295557] [2021-11-07 07:22:49,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000295557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:49,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:49,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:49,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144466037] [2021-11-07 07:22:49,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:49,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:49,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:49,085 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 138 [2021-11-07 07:22:49,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 179 transitions, 709 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2021-11-07 07:22:49,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:49,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 138 [2021-11-07 07:22:49,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:49,374 INFO L129 PetriNetUnfolder]: 131/1126 cut-off events. [2021-11-07 07:22:49,374 INFO L130 PetriNetUnfolder]: For 2186/2222 co-relation queries the response was YES. [2021-11-07 07:22:49,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 1126 events. 131/1126 cut-off events. For 2186/2222 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6206 event pairs, 45 based on Foata normal form. 12/1106 useless extension candidates. Maximal degree in co-relation 2288. Up to 132 conditions per place. [2021-11-07 07:22:49,390 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 2 selfloop transitions, 5 changer transitions 0/172 dead transitions. [2021-11-07 07:22:49,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 172 transitions, 684 flow [2021-11-07 07:22:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 07:22:49,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2021-11-07 07:22:49,392 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2021-11-07 07:22:49,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2021-11-07 07:22:49,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2021-11-07 07:22:49,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:49,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2021-11-07 07:22:49,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2021-11-07 07:22:49,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-11-07 07:22:49,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-11-07 07:22:49,397 INFO L186 Difference]: Start difference. First operand has 178 places, 179 transitions, 709 flow. Second operand 3 states and 386 transitions. [2021-11-07 07:22:49,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 172 transitions, 684 flow [2021-11-07 07:22:49,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 172 transitions, 670 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-11-07 07:22:49,412 INFO L242 Difference]: Finished difference. Result has 176 places, 172 transitions, 680 flow [2021-11-07 07:22:49,412 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=680, PETRI_PLACES=176, PETRI_TRANSITIONS=172} [2021-11-07 07:22:49,413 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 52 predicate places. [2021-11-07 07:22:49,413 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 172 transitions, 680 flow [2021-11-07 07:22:49,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2021-11-07 07:22:49,413 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:49,414 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:49,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 07:22:49,414 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:22:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1789939939, now seen corresponding path program 1 times [2021-11-07 07:22:49,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:49,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698275149] [2021-11-07 07:22:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:49,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:49,455 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:49,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942736767] [2021-11-07 07:22:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:49,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:49,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:49,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:49,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:22:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:49,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:22:49,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:50,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:50,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:50,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698275149] [2021-11-07 07:22:50,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:50,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942736767] [2021-11-07 07:22:50,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942736767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:50,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:50,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:50,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539801801] [2021-11-07 07:22:50,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:50,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:50,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:50,038 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 138 [2021-11-07 07:22:50,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 172 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2021-11-07 07:22:50,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:50,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 138 [2021-11-07 07:22:50,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:50,289 INFO L129 PetriNetUnfolder]: 147/1246 cut-off events. [2021-11-07 07:22:50,290 INFO L130 PetriNetUnfolder]: For 2509/2553 co-relation queries the response was YES. [2021-11-07 07:22:50,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2693 conditions, 1246 events. 147/1246 cut-off events. For 2509/2553 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7271 event pairs, 51 based on Foata normal form. 16/1235 useless extension candidates. Maximal degree in co-relation 2603. Up to 151 conditions per place. [2021-11-07 07:22:50,304 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 3 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2021-11-07 07:22:50,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 173 transitions, 696 flow [2021-11-07 07:22:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 07:22:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2021-11-07 07:22:50,306 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2021-11-07 07:22:50,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2021-11-07 07:22:50,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2021-11-07 07:22:50,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:50,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2021-11-07 07:22:50,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2021-11-07 07:22:50,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-11-07 07:22:50,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-11-07 07:22:50,311 INFO L186 Difference]: Start difference. First operand has 176 places, 172 transitions, 680 flow. Second operand 3 states and 386 transitions. [2021-11-07 07:22:50,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 173 transitions, 696 flow [2021-11-07 07:22:50,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 173 transitions, 686 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-07 07:22:50,323 INFO L242 Difference]: Finished difference. Result has 178 places, 173 transitions, 692 flow [2021-11-07 07:22:50,323 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=178, PETRI_TRANSITIONS=173} [2021-11-07 07:22:50,324 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 54 predicate places. [2021-11-07 07:22:50,324 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 173 transitions, 692 flow [2021-11-07 07:22:50,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2021-11-07 07:22:50,324 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:50,325 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:50,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:50,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 07:22:50,549 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:22:50,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:50,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1875552665, now seen corresponding path program 2 times [2021-11-07 07:22:50,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:50,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934434925] [2021-11-07 07:22:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:50,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:50,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:50,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190607914] [2021-11-07 07:22:50,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:50,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:50,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:50,570 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:50,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:22:50,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:50,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-07 07:22:50,954 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:51,154 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:51,154 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 07:22:51,155 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:22:51,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 07:22:51,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 07:22:51,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:22:51,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:22:51,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:22:51,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:51,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:51,377 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:51,383 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 07:22:51,383 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 07:22:51,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:22:51 BasicIcfg [2021-11-07 07:22:51,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 07:22:51,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 07:22:51,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 07:22:51,563 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 07:22:51,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:38" (3/4) ... [2021-11-07 07:22:51,566 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 07:22:51,682 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 07:22:51,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 07:22:51,683 INFO L168 Benchmark]: Toolchain (without parser) took 15010.21 ms. Allocated memory was 109.1 MB in the beginning and 262.1 MB in the end (delta: 153.1 MB). Free memory was 65.7 MB in the beginning and 80.2 MB in the end (delta: -14.6 MB). Peak memory consumption was 139.6 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:51,684 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 83.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:22:51,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.37 ms. Allocated memory is still 109.1 MB. Free memory was 65.4 MB in the beginning and 72.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:51,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.49 ms. Allocated memory is still 109.1 MB. Free memory was 72.6 MB in the beginning and 70.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:51,685 INFO L168 Benchmark]: Boogie Preprocessor took 32.83 ms. Allocated memory is still 109.1 MB. Free memory was 70.2 MB in the beginning and 68.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:51,685 INFO L168 Benchmark]: RCFGBuilder took 678.79 ms. Allocated memory is still 109.1 MB. Free memory was 68.4 MB in the beginning and 53.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:51,686 INFO L168 Benchmark]: TraceAbstraction took 13445.44 ms. Allocated memory was 109.1 MB in the beginning and 262.1 MB in the end (delta: 153.1 MB). Free memory was 52.9 MB in the beginning and 100.1 MB in the end (delta: -47.2 MB). Peak memory consumption was 109.9 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:51,686 INFO L168 Benchmark]: Witness Printer took 119.28 ms. Allocated memory is still 262.1 MB. Free memory was 100.1 MB in the beginning and 80.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:51,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 83.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 676.37 ms. Allocated memory is still 109.1 MB. Free memory was 65.4 MB in the beginning and 72.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.49 ms. Allocated memory is still 109.1 MB. Free memory was 72.6 MB in the beginning and 70.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.83 ms. Allocated memory is still 109.1 MB. Free memory was 70.2 MB in the beginning and 68.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 678.79 ms. Allocated memory is still 109.1 MB. Free memory was 68.4 MB in the beginning and 53.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13445.44 ms. Allocated memory was 109.1 MB in the beginning and 262.1 MB in the end (delta: 153.1 MB). Free memory was 52.9 MB in the beginning and 100.1 MB in the end (delta: -47.2 MB). Peak memory consumption was 109.9 MB. Max. memory is 16.1 GB. * Witness Printer took 119.28 ms. Allocated memory is still 262.1 MB. Free memory was 100.1 MB in the beginning and 80.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 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 - CounterExampleResult [Line: 746]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 static char buffer[10]; VAL [buffer={6:0}] [L683] 0 static unsigned int first; VAL [buffer={6:0}, first=0] [L684] 0 static unsigned int next; VAL [buffer={6:0}, first=0, next=0] [L685] 0 static int buffer_size; VAL [buffer={6:0}, buffer_size=0, first=0, next=0] [L686] 0 _Bool send, receive; VAL [buffer={6:0}, buffer_size=0, first=0, next=0, receive=0, send=0] [L687] 0 pthread_mutex_t m; VAL [buffer={6:0}, buffer_size=0, first=0, m={7:0}, next=0, receive=0, send=0] [L756] 0 pthread_t id1, id2; VAL [buffer={6:0}, buffer_size=0, first=0, m={7:0}, next=0, receive=0, send=0] [L690] 0 buffer_size = max VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=0] [L691] EXPR 0 next = 0 VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=0] [L691] 0 first = next = 0 VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=0] [L759] 0 send=1 VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L760] 0 receive=0 VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L723] 1 int i; VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L724] 1 i=0 VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L739] 2 int i; VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L740] 2 i=0 VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L743] COND FALSE 2 !(\read(receive)) VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L727] COND TRUE 1 \read(send) VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L709] 1 buffer[next] = b VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=1, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=1, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size VAL [buffer={6:0}, buffer_size=10, first=0, m={7:0}, next=1, receive=1, send=0] [L697] 2 first++ VAL [buffer={6:0}, buffer_size=10, first=1, m={7:0}, next=1, receive=1, send=0] [L698] EXPR 2 buffer[first-1] VAL [buffer={6:0}, buffer_size=10, first=1, m={7:0}, next=1, receive=1, send=0] [L698] 2 return buffer[first-1]; VAL [buffer={6:0}, buffer_size=10, first=1, m={7:0}, next=1, receive=1, send=0] [L745] COND FALSE 2 !(removeLogElement()==i) VAL [buffer={6:0}, buffer_size=10, first=1, m={7:0}, next=1, receive=1, send=0] [L746] 2 reach_error() VAL [buffer={6:0}, buffer_size=10, first=1, m={7:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 197 locations, 6 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: 13.0s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 704 SDslu, 442 SDs, 0 SdLazy, 756 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 373 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=709occurred in iteration=6, InterpolantAutomatonStates: 59, 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 752 NumberOfCodeBlocks, 752 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 646 ConstructedInterpolants, 18 QuantifiedInterpolants, 2676 SizeOfPredicates, 27 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 9/9 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 RESULT: Ultimate proved your program to be incorrect! [2021-11-07 07:22:51,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8a24dd-cc18-44b9-a0db-1a0074f17188/bin/uautomizer-AkOaLMaTGY/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE