./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 0.2.3-dev-9bd2c7f [2023-11-19 07:54:08,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:09,082 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:54:09,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:09,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:09,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:09,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:09,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:09,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:09,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:09,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:09,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:09,148 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:09,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:09,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:54:09,150 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:09,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:09,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:09,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:09,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:54:09,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:09,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:54:09,154 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:09,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:54:09,155 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:09,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:09,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:09,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:09,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:09,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:09,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:09,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:54:09,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:09,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:09,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:09,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:54:09,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:09,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:09,161 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:09,161 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2023-11-19 07:54:09,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:09,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:09,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:09,509 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:09,510 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:09,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2023-11-19 07:54:12,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:13,094 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:13,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2023-11-19 07:54:13,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/data/b1fa4dbb8/c0c4647cb80a4e19954a41ce54c8e287/FLAG8d5ae48c4 [2023-11-19 07:54:13,134 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/data/b1fa4dbb8/c0c4647cb80a4e19954a41ce54c8e287 [2023-11-19 07:54:13,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:13,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:13,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:13,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:13,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:13,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c19a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13, skipping insertion in model container [2023-11-19 07:54:13,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,235 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:13,605 WARN L240 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_a3940be8-f465-43cd-8b64-0f8b48e94890/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2023-11-19 07:54:13,618 WARN L240 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_a3940be8-f465-43cd-8b64-0f8b48e94890/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2023-11-19 07:54:13,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:13,639 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:13,678 WARN L240 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_a3940be8-f465-43cd-8b64-0f8b48e94890/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2023-11-19 07:54:13,682 WARN L240 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_a3940be8-f465-43cd-8b64-0f8b48e94890/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2023-11-19 07:54:13,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:13,764 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:13,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13 WrapperNode [2023-11-19 07:54:13,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:13,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:13,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:13,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:13,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,873 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134 [2023-11-19 07:54:13,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:13,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:13,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:13,876 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:13,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:13,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:13,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:13,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:13,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:13,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:13,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:14,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:54:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 07:54:14,059 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 07:54:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 07:54:14,060 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 07:54:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:54:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:54:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:54:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:54:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:54:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:54:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:14,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:14,067 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:54:14,288 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:14,291 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:14,616 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:14,646 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:14,647 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:54:14,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:14 BoogieIcfgContainer [2023-11-19 07:54:14,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:14,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:14,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:14,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:14,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:13" (1/3) ... [2023-11-19 07:54:14,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b94a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:14, skipping insertion in model container [2023-11-19 07:54:14,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (2/3) ... [2023-11-19 07:54:14,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b94a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:14, skipping insertion in model container [2023-11-19 07:54:14,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:14" (3/3) ... [2023-11-19 07:54:14,679 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2023-11-19 07:54:14,698 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:54:14,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:14,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:54:14,715 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:54:14,836 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:54:14,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 145 transitions, 304 flow [2023-11-19 07:54:14,978 INFO L124 PetriNetUnfolderBase]: 10/143 cut-off events. [2023-11-19 07:54:14,979 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:54:14,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 143 events. 10/143 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 257 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-19 07:54:14,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 145 transitions, 304 flow [2023-11-19 07:54:14,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 133 transitions, 275 flow [2023-11-19 07:54:14,999 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:54:15,011 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 133 transitions, 275 flow [2023-11-19 07:54:15,015 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 133 transitions, 275 flow [2023-11-19 07:54:15,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 133 transitions, 275 flow [2023-11-19 07:54:15,060 INFO L124 PetriNetUnfolderBase]: 10/133 cut-off events. [2023-11-19 07:54:15,061 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:54:15,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 133 events. 10/133 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-19 07:54:15,067 INFO L119 LiptonReduction]: Number of co-enabled transitions 4116 [2023-11-19 07:54:21,648 INFO L134 LiptonReduction]: Checked pairs total: 9010 [2023-11-19 07:54:21,649 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-11-19 07:54:21,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:21,672 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4eeb2907, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:21,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:54:21,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:54:21,680 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2023-11-19 07:54:21,680 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:54:21,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:21,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:21,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:54:21,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:21,687 INFO L85 PathProgramCache]: Analyzing trace with hash -4480472, now seen corresponding path program 1 times [2023-11-19 07:54:21,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:21,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807492371] [2023-11-19 07:54:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:21,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:21,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800696281] [2023-11-19 07:54:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:21,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:21,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:21,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:21,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:54:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:22,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:54:22,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:22,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:22,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807492371] [2023-11-19 07:54:22,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:22,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800696281] [2023-11-19 07:54:22,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800696281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:22,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:22,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777814011] [2023-11-19 07:54:22,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:22,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:22,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:22,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:22,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 260 [2023-11-19 07:54:22,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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) [2023-11-19 07:54:22,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:22,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 260 [2023-11-19 07:54:22,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:22,464 INFO L124 PetriNetUnfolderBase]: 377/617 cut-off events. [2023-11-19 07:54:22,464 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-19 07:54:22,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 617 events. 377/617 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2344 event pairs, 267 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 1115. Up to 570 conditions per place. [2023-11-19 07:54:22,477 INFO L140 encePairwiseOnDemand]: 257/260 looper letters, 27 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-11-19 07:54:22,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 129 flow [2023-11-19 07:54:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-11-19 07:54:22,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2023-11-19 07:54:22,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-11-19 07:54:22,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-11-19 07:54:22,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:22,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-11-19 07:54:22,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2023-11-19 07:54:22,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2023-11-19 07:54:22,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2023-11-19 07:54:22,522 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 79 flow. Second operand 3 states and 420 transitions. [2023-11-19 07:54:22,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 129 flow [2023-11-19 07:54:22,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:54:22,528 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 70 flow [2023-11-19 07:54:22,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2023-11-19 07:54:22,534 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2023-11-19 07:54:22,534 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 70 flow [2023-11-19 07:54:22,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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) [2023-11-19 07:54:22,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:22,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:22,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:22,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:54:22,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:54:22,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1558401, now seen corresponding path program 1 times [2023-11-19 07:54:22,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:22,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312762362] [2023-11-19 07:54:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:23,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:23,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312762362] [2023-11-19 07:54:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312762362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:23,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:23,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:23,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749774875] [2023-11-19 07:54:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:23,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:23,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:23,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:23,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:23,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 260 [2023-11-19 07:54:23,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2023-11-19 07:54:23,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:23,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 260 [2023-11-19 07:54:23,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:23,293 INFO L124 PetriNetUnfolderBase]: 540/908 cut-off events. [2023-11-19 07:54:23,295 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:54:23,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818 conditions, 908 events. 540/908 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3435 event pairs, 204 based on Foata normal form. 0/705 useless extension candidates. Maximal degree in co-relation 1812. Up to 531 conditions per place. [2023-11-19 07:54:23,303 INFO L140 encePairwiseOnDemand]: 256/260 looper letters, 44 selfloop transitions, 3 changer transitions 2/52 dead transitions. [2023-11-19 07:54:23,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 52 transitions, 211 flow [2023-11-19 07:54:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-11-19 07:54:23,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2023-11-19 07:54:23,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-11-19 07:54:23,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-11-19 07:54:23,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:23,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-11-19 07:54:23,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2023-11-19 07:54:23,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2023-11-19 07:54:23,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2023-11-19 07:54:23,322 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 70 flow. Second operand 3 states and 440 transitions. [2023-11-19 07:54:23,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 52 transitions, 211 flow [2023-11-19 07:54:23,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:23,325 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 82 flow [2023-11-19 07:54:23,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-11-19 07:54:23,326 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-19 07:54:23,327 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 82 flow [2023-11-19 07:54:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2023-11-19 07:54:23,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:23,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:23,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:54:23,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:54:23,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:23,331 INFO L85 PathProgramCache]: Analyzing trace with hash -955282212, now seen corresponding path program 1 times [2023-11-19 07:54:23,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:23,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098258796] [2023-11-19 07:54:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:23,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:23,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:23,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098258796] [2023-11-19 07:54:23,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098258796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:23,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:23,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:23,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242179443] [2023-11-19 07:54:23,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:23,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:23,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:23,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:23,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 260 [2023-11-19 07:54:23,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-11-19 07:54:23,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:23,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 260 [2023-11-19 07:54:23,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:23,694 INFO L124 PetriNetUnfolderBase]: 324/565 cut-off events. [2023-11-19 07:54:23,694 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-19 07:54:23,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 565 events. 324/565 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2136 event pairs, 64 based on Foata normal form. 22/531 useless extension candidates. Maximal degree in co-relation 1181. Up to 382 conditions per place. [2023-11-19 07:54:23,699 INFO L140 encePairwiseOnDemand]: 256/260 looper letters, 35 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-11-19 07:54:23,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 183 flow [2023-11-19 07:54:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:23,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-11-19 07:54:23,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2023-11-19 07:54:23,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-11-19 07:54:23,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-11-19 07:54:23,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:23,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-11-19 07:54:23,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-11-19 07:54:23,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2023-11-19 07:54:23,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2023-11-19 07:54:23,708 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 82 flow. Second operand 3 states and 428 transitions. [2023-11-19 07:54:23,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 183 flow [2023-11-19 07:54:23,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:23,711 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 87 flow [2023-11-19 07:54:23,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-11-19 07:54:23,712 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-19 07:54:23,712 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 87 flow [2023-11-19 07:54:23,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-11-19 07:54:23,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:23,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:23,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:54:23,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:54:23,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash -597904793, now seen corresponding path program 1 times [2023-11-19 07:54:23,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:23,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798987490] [2023-11-19 07:54:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:23,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:24,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798987490] [2023-11-19 07:54:24,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798987490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:24,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:24,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:24,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197537231] [2023-11-19 07:54:24,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:24,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:24,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:24,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:24,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:24,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 260 [2023-11-19 07:54:24,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-11-19 07:54:24,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:24,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 260 [2023-11-19 07:54:24,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:24,369 INFO L124 PetriNetUnfolderBase]: 334/620 cut-off events. [2023-11-19 07:54:24,369 INFO L125 PetriNetUnfolderBase]: For 42/44 co-relation queries the response was YES. [2023-11-19 07:54:24,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 620 events. 334/620 cut-off events. For 42/44 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2238 event pairs, 128 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 1328. Up to 390 conditions per place. [2023-11-19 07:54:24,375 INFO L140 encePairwiseOnDemand]: 257/260 looper letters, 38 selfloop transitions, 2 changer transitions 3/48 dead transitions. [2023-11-19 07:54:24,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 212 flow [2023-11-19 07:54:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:24,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-11-19 07:54:24,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5525641025641026 [2023-11-19 07:54:24,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-11-19 07:54:24,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-11-19 07:54:24,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:24,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-11-19 07:54:24,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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) [2023-11-19 07:54:24,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2023-11-19 07:54:24,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2023-11-19 07:54:24,385 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 87 flow. Second operand 3 states and 431 transitions. [2023-11-19 07:54:24,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 212 flow [2023-11-19 07:54:24,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:24,389 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 95 flow [2023-11-19 07:54:24,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-11-19 07:54:24,390 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-11-19 07:54:24,390 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 95 flow [2023-11-19 07:54:24,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-11-19 07:54:24,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:24,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:24,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:54:24,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:54:24,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:24,393 INFO L85 PathProgramCache]: Analyzing trace with hash 980504527, now seen corresponding path program 1 times [2023-11-19 07:54:24,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:24,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784432145] [2023-11-19 07:54:24,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:24,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:24,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:24,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334391371] [2023-11-19 07:54:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:24,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:24,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:24,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:24,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:54:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:24,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:54:24,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:24,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:24,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784432145] [2023-11-19 07:54:24,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:24,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334391371] [2023-11-19 07:54:24,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334391371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:24,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:24,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:24,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43320723] [2023-11-19 07:54:24,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:24,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:24,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:24,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:24,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 260 [2023-11-19 07:54:24,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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) [2023-11-19 07:54:24,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:24,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 260 [2023-11-19 07:54:24,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:25,161 INFO L124 PetriNetUnfolderBase]: 444/824 cut-off events. [2023-11-19 07:54:25,161 INFO L125 PetriNetUnfolderBase]: For 50/52 co-relation queries the response was YES. [2023-11-19 07:54:25,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 824 events. 444/824 cut-off events. For 50/52 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3177 event pairs, 114 based on Foata normal form. 8/793 useless extension candidates. Maximal degree in co-relation 1753. Up to 383 conditions per place. [2023-11-19 07:54:25,169 INFO L140 encePairwiseOnDemand]: 255/260 looper letters, 55 selfloop transitions, 4 changer transitions 3/67 dead transitions. [2023-11-19 07:54:25,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 67 transitions, 301 flow [2023-11-19 07:54:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 560 transitions. [2023-11-19 07:54:25,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2023-11-19 07:54:25,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 560 transitions. [2023-11-19 07:54:25,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 560 transitions. [2023-11-19 07:54:25,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:25,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 560 transitions. [2023-11-19 07:54:25,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-19 07:54:25,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 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) [2023-11-19 07:54:25,181 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 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) [2023-11-19 07:54:25,181 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 95 flow. Second operand 4 states and 560 transitions. [2023-11-19 07:54:25,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 67 transitions, 301 flow [2023-11-19 07:54:25,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:25,184 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 118 flow [2023-11-19 07:54:25,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-11-19 07:54:25,186 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-11-19 07:54:25,186 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 118 flow [2023-11-19 07:54:25,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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) [2023-11-19 07:54:25,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:25,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:25,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:25,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:25,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:54:25,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:25,408 INFO L85 PathProgramCache]: Analyzing trace with hash 330839122, now seen corresponding path program 1 times [2023-11-19 07:54:25,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:25,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89590885] [2023-11-19 07:54:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:25,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:25,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:25,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200000464] [2023-11-19 07:54:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:25,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:25,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:25,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:25,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:54:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:25,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:54:25,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:25,744 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-19 07:54:25,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-19 07:54:25,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2023-11-19 07:54:25,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 15 treesize of output 10 [2023-11-19 07:54:25,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 43 [2023-11-19 07:54:26,399 INFO L378 Elim1Store]: Elim1 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 83 treesize of output 75 [2023-11-19 07:54:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:26,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:26,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89590885] [2023-11-19 07:54:26,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200000464] [2023-11-19 07:54:26,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200000464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:26,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:26,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:54:26,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820787060] [2023-11-19 07:54:26,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:26,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:54:26,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:26,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:54:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:54:27,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 260 [2023-11-19 07:54:27,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 118 flow. Second operand has 9 states, 9 states have (on average 113.77777777777777) internal successors, (1024), 9 states have internal predecessors, (1024), 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) [2023-11-19 07:54:27,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:27,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 260 [2023-11-19 07:54:27,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:29,096 INFO L124 PetriNetUnfolderBase]: 1055/1978 cut-off events. [2023-11-19 07:54:29,097 INFO L125 PetriNetUnfolderBase]: For 259/269 co-relation queries the response was YES. [2023-11-19 07:54:29,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4302 conditions, 1978 events. 1055/1978 cut-off events. For 259/269 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9977 event pairs, 276 based on Foata normal form. 36/1930 useless extension candidates. Maximal degree in co-relation 4289. Up to 616 conditions per place. [2023-11-19 07:54:29,113 INFO L140 encePairwiseOnDemand]: 248/260 looper letters, 94 selfloop transitions, 22 changer transitions 3/124 dead transitions. [2023-11-19 07:54:29,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 124 transitions, 601 flow [2023-11-19 07:54:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:54:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:54:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1239 transitions. [2023-11-19 07:54:29,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765384615384615 [2023-11-19 07:54:29,119 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1239 transitions. [2023-11-19 07:54:29,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1239 transitions. [2023-11-19 07:54:29,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:29,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1239 transitions. [2023-11-19 07:54:29,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.9) internal successors, (1239), 10 states have internal predecessors, (1239), 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) [2023-11-19 07:54:29,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 260.0) internal successors, (2860), 11 states have internal predecessors, (2860), 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) [2023-11-19 07:54:29,133 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 260.0) internal successors, (2860), 11 states have internal predecessors, (2860), 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) [2023-11-19 07:54:29,133 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 118 flow. Second operand 10 states and 1239 transitions. [2023-11-19 07:54:29,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 124 transitions, 601 flow [2023-11-19 07:54:29,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 124 transitions, 588 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:29,143 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 284 flow [2023-11-19 07:54:29,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=284, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2023-11-19 07:54:29,146 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2023-11-19 07:54:29,146 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 284 flow [2023-11-19 07:54:29,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.77777777777777) internal successors, (1024), 9 states have internal predecessors, (1024), 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) [2023-11-19 07:54:29,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:29,147 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:29,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:54:29,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:29,370 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:54:29,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:29,370 INFO L85 PathProgramCache]: Analyzing trace with hash 707246552, now seen corresponding path program 1 times [2023-11-19 07:54:29,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:29,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587617562] [2023-11-19 07:54:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:29,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:29,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:29,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054484778] [2023-11-19 07:54:29,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:29,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:29,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:29,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:29,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:54:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:29,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:54:29,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:29,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:29,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:29,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587617562] [2023-11-19 07:54:29,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:29,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054484778] [2023-11-19 07:54:29,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054484778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:29,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:29,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:29,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930885224] [2023-11-19 07:54:29,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:29,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:29,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:29,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:29,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:29,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 260 [2023-11-19 07:54:29,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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) [2023-11-19 07:54:29,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:29,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 260 [2023-11-19 07:54:29,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:29,933 INFO L124 PetriNetUnfolderBase]: 902/1721 cut-off events. [2023-11-19 07:54:29,933 INFO L125 PetriNetUnfolderBase]: For 2311/2311 co-relation queries the response was YES. [2023-11-19 07:54:29,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 1721 events. 902/1721 cut-off events. For 2311/2311 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7675 event pairs, 278 based on Foata normal form. 44/1749 useless extension candidates. Maximal degree in co-relation 5177. Up to 1160 conditions per place. [2023-11-19 07:54:29,948 INFO L140 encePairwiseOnDemand]: 255/260 looper letters, 59 selfloop transitions, 3 changer transitions 4/69 dead transitions. [2023-11-19 07:54:29,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 69 transitions, 477 flow [2023-11-19 07:54:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-11-19 07:54:29,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2023-11-19 07:54:29,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-11-19 07:54:29,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-11-19 07:54:29,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:29,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-11-19 07:54:29,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-11-19 07:54:29,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2023-11-19 07:54:29,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2023-11-19 07:54:29,955 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 284 flow. Second operand 3 states and 429 transitions. [2023-11-19 07:54:29,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 69 transitions, 477 flow [2023-11-19 07:54:29,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 462 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:54:29,964 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 265 flow [2023-11-19 07:54:29,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-11-19 07:54:29,965 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2023-11-19 07:54:29,965 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 265 flow [2023-11-19 07:54:29,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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) [2023-11-19 07:54:29,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:29,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:29,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:30,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:30,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:54:30,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2112707596, now seen corresponding path program 1 times [2023-11-19 07:54:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:30,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733931063] [2023-11-19 07:54:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:30,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:30,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869491699] [2023-11-19 07:54:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:30,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:30,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:30,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:30,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:54:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:54:30,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:54:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:54:30,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:54:30,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:54:30,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-19 07:54:30,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-11-19 07:54:30,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-19 07:54:30,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-19 07:54:30,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-19 07:54:30,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-19 07:54:30,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:30,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:30,858 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:30,864 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:54:30,864 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:54:30,917 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-19 07:54:30,919 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-19 07:54:30,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:54:30 BasicIcfg [2023-11-19 07:54:30,943 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:54:30,944 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:54:30,944 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:54:30,944 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:54:30,945 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:14" (3/4) ... [2023-11-19 07:54:30,946 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 07:54:30,974 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-19 07:54:30,974 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-19 07:54:31,048 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:54:31,048 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:54:31,049 INFO L158 Benchmark]: Toolchain (without parser) took 17909.38ms. Allocated memory was 138.4MB in the beginning and 249.6MB in the end (delta: 111.1MB). Free memory was 92.2MB in the beginning and 127.0MB in the end (delta: -34.9MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. [2023-11-19 07:54:31,049 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 138.4MB. Free memory was 87.3MB in the beginning and 87.2MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:54:31,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 624.48ms. Allocated memory is still 138.4MB. Free memory was 91.7MB in the beginning and 71.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:54:31,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.67ms. Allocated memory is still 138.4MB. Free memory was 71.3MB in the beginning and 69.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:54:31,050 INFO L158 Benchmark]: Boogie Preprocessor took 70.18ms. Allocated memory is still 138.4MB. Free memory was 69.2MB in the beginning and 67.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:54:31,051 INFO L158 Benchmark]: RCFGBuilder took 721.63ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 67.1MB in the beginning and 131.5MB in the end (delta: -64.4MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2023-11-19 07:54:31,051 INFO L158 Benchmark]: TraceAbstraction took 16272.20ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 130.6MB in the beginning and 133.3MB in the end (delta: -2.7MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. [2023-11-19 07:54:31,051 INFO L158 Benchmark]: Witness Printer took 104.43ms. Allocated memory is still 249.6MB. Free memory was 133.3MB in the beginning and 127.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:54:31,055 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 138.4MB. Free memory was 87.3MB in the beginning and 87.2MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 624.48ms. Allocated memory is still 138.4MB. Free memory was 91.7MB in the beginning and 71.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.67ms. Allocated memory is still 138.4MB. Free memory was 71.3MB in the beginning and 69.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.18ms. Allocated memory is still 138.4MB. Free memory was 69.2MB in the beginning and 67.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 721.63ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 67.1MB in the beginning and 131.5MB in the end (delta: -64.4MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16272.20ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 130.6MB in the beginning and 133.3MB in the end (delta: -2.7MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. * Witness Printer took 104.43ms. Allocated memory is still 249.6MB. Free memory was 133.3MB in the beginning and 127.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.6s, 130 PlacesBefore, 35 PlacesAfterwards, 133 TransitionsBefore, 35 TransitionsAfterwards, 4116 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 115 TotalNumberOfCompositions, 9010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5244, independent: 4944, independent conditional: 0, independent unconditional: 4944, dependent: 300, dependent conditional: 0, dependent unconditional: 300, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2316, independent: 2276, independent conditional: 0, independent unconditional: 2276, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5244, independent: 2668, independent conditional: 0, independent unconditional: 2668, dependent: 260, dependent conditional: 0, dependent unconditional: 260, unknown: 2316, unknown conditional: 0, unknown unconditional: 2316] , Statistics on independence cache: Total cache size (in pairs): 194, Positive cache size: 174, Positive conditional cache size: 0, Positive unconditional cache size: 174, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 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]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 207 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: 16.0s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 597 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 428 mSDsluCounter, 259 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 209 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1366 IncrementalHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 50 mSDtfsCounter, 1366 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=6, InterpolantAutomatonStates: 29, 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, 0.9s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 9 QuantifiedInterpolants, 1012 SizeOfPredicates, 12 NumberOfNonLiveVariables, 813 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 3/3 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! [2023-11-19 07:54:31,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3940be8-f465-43cd-8b64-0f8b48e94890/bin/uautomizer-verify-uCwYo4JHxu/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