./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:48:17,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:48:17,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:48:17,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:48:17,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:48:17,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:48:17,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:48:17,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:48:17,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:48:17,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:48:17,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:48:17,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:48:17,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:48:17,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:48:17,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:48:17,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:48:17,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:48:17,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:48:17,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:48:17,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:48:17,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:48:17,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:48:17,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:48:17,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:48:17,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:48:17,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:48:17,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:48:17,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:48:17,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:48:17,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:48:17,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:48:17,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:48:17,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:48:17,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:48:17,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:48:17,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:48:17,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:48:17,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:48:17,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:48:17,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:48:17,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:48:17,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:48:17,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:48:17,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:48:17,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:48:17,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:48:17,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:48:17,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:48:17,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:48:17,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:48:17,777 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:48:17,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:48:17,778 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:48:17,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:48:17,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:48:17,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:48:17,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:48:17,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:48:17,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:48:17,779 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:48:17,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:48:17,780 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:48:17,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:48:17,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:48:17,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:48:17,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:48:17,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:48:17,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:48:17,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:48:17,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:48:17,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:48:17,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:48:17,783 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:48:17,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:48:17,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:48:17,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2022-11-18 19:48:18,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:48:18,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:48:18,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:48:18,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:48:18,178 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:48:18,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-11-18 19:48:18,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/data/fbee13dfe/5e24ae545cb14494bf4003cc3d49a15e/FLAGf93fecb5c [2022-11-18 19:48:19,129 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:48:19,130 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-11-18 19:48:19,156 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/data/fbee13dfe/5e24ae545cb14494bf4003cc3d49a15e/FLAGf93fecb5c [2022-11-18 19:48:19,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/data/fbee13dfe/5e24ae545cb14494bf4003cc3d49a15e [2022-11-18 19:48:19,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:48:19,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:48:19,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:48:19,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:48:19,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:48:19,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:48:19" (1/1) ... [2022-11-18 19:48:19,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d79e65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:19, skipping insertion in model container [2022-11-18 19:48:19,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:48:19" (1/1) ... [2022-11-18 19:48:19,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:48:19,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:48:20,194 WARN L234 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_363ef623-bc06-4b14-8cf7-c5ec53cb752c/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-11-18 19:48:20,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:48:20,240 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:48:20,306 WARN L234 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_363ef623-bc06-4b14-8cf7-c5ec53cb752c/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-11-18 19:48:20,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:48:20,432 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:48:20,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20 WrapperNode [2022-11-18 19:48:20,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:48:20,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:48:20,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:48:20,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:48:20,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,566 INFO L138 Inliner]: procedures = 428, calls = 126, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 458 [2022-11-18 19:48:20,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:48:20,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:48:20,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:48:20,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:48:20,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,637 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:48:20,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:48:20,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:48:20,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:48:20,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (1/1) ... [2022-11-18 19:48:20,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:48:20,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:20,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:48:20,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363ef623-bc06-4b14-8cf7-c5ec53cb752c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:48:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2022-11-18 19:48:20,768 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2022-11-18 19:48:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:48:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:48:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:48:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:48:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2022-11-18 19:48:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:48:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:48:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:48:20,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:48:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:48:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:48:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2022-11-18 19:48:20,770 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2022-11-18 19:48:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:48:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:48:20,773 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:48:21,041 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:48:21,043 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:48:22,062 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:48:22,087 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:48:22,087 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-18 19:48:22,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:48:22 BoogieIcfgContainer [2022-11-18 19:48:22,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:48:22,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:48:22,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:48:22,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:48:22,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:48:19" (1/3) ... [2022-11-18 19:48:22,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d6335a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:48:22, skipping insertion in model container [2022-11-18 19:48:22,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:20" (2/3) ... [2022-11-18 19:48:22,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d6335a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:48:22, skipping insertion in model container [2022-11-18 19:48:22,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:48:22" (3/3) ... [2022-11-18 19:48:22,103 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2022-11-18 19:48:22,114 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:48:22,127 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:48:22,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:48:22,129 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:48:22,344 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:48:22,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 479 transitions, 980 flow [2022-11-18 19:48:22,927 INFO L130 PetriNetUnfolder]: 109/1033 cut-off events. [2022-11-18 19:48:22,927 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 19:48:22,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 1033 events. 109/1033 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6124 event pairs, 0 based on Foata normal form. 0/916 useless extension candidates. Maximal degree in co-relation 543. Up to 16 conditions per place. [2022-11-18 19:48:22,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 479 transitions, 980 flow [2022-11-18 19:48:22,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 479 transitions, 980 flow [2022-11-18 19:48:23,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:48:23,037 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@350a3d51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:48:23,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 19:48:23,074 INFO L130 PetriNetUnfolder]: 18/188 cut-off events. [2022-11-18 19:48:23,074 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:48:23,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:23,076 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:23,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 19:48:23,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:23,085 INFO L85 PathProgramCache]: Analyzing trace with hash 631815602, now seen corresponding path program 1 times [2022-11-18 19:48:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:23,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660265383] [2022-11-18 19:48:23,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:23,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:48:23,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:23,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660265383] [2022-11-18 19:48:23,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660265383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:23,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:23,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:48:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642576710] [2022-11-18 19:48:23,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:23,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:23,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:23,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 479 [2022-11-18 19:48:23,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 479 transitions, 980 flow. Second operand has 5 states, 5 states have (on average 437.6) internal successors, (2188), 5 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:23,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:23,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 479 [2022-11-18 19:48:23,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:24,337 INFO L130 PetriNetUnfolder]: 74/995 cut-off events. [2022-11-18 19:48:24,338 INFO L131 PetriNetUnfolder]: For 27/39 co-relation queries the response was YES. [2022-11-18 19:48:24,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 995 events. 74/995 cut-off events. For 27/39 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5964 event pairs, 0 based on Foata normal form. 63/976 useless extension candidates. Maximal degree in co-relation 536. Up to 39 conditions per place. [2022-11-18 19:48:24,372 INFO L137 encePairwiseOnDemand]: 462/479 looper letters, 25 selfloop transitions, 4 changer transitions 0/464 dead transitions. [2022-11-18 19:48:24,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 464 transitions, 1008 flow [2022-11-18 19:48:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:48:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2227 transitions. [2022-11-18 19:48:24,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9298538622129436 [2022-11-18 19:48:24,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2227 transitions. [2022-11-18 19:48:24,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2227 transitions. [2022-11-18 19:48:24,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:24,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2227 transitions. [2022-11-18 19:48:24,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 445.4) internal successors, (2227), 5 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:24,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 479.0) internal successors, (2874), 6 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:24,454 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 479.0) internal successors, (2874), 6 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:24,457 INFO L175 Difference]: Start difference. First operand has 435 places, 479 transitions, 980 flow. Second operand 5 states and 2227 transitions. [2022-11-18 19:48:24,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 464 transitions, 1008 flow [2022-11-18 19:48:24,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 464 transitions, 1008 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:48:24,477 INFO L231 Difference]: Finished difference. Result has 437 places, 464 transitions, 958 flow [2022-11-18 19:48:24,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=479, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=958, PETRI_PLACES=437, PETRI_TRANSITIONS=464} [2022-11-18 19:48:24,485 INFO L288 CegarLoopForPetriNet]: 435 programPoint places, 2 predicate places. [2022-11-18 19:48:24,485 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 464 transitions, 958 flow [2022-11-18 19:48:24,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.6) internal successors, (2188), 5 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:24,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:24,488 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:24,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:48:24,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 19:48:24,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash -661229450, now seen corresponding path program 1 times [2022-11-18 19:48:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:24,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860562573] [2022-11-18 19:48:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:48:24,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:24,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860562573] [2022-11-18 19:48:24,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860562573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:24,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:24,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:48:24,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533631340] [2022-11-18 19:48:24,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:24,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:24,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:24,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:24,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 479 [2022-11-18 19:48:24,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 464 transitions, 958 flow. Second operand has 3 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:24,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:24,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 479 [2022-11-18 19:48:24,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:24,998 INFO L130 PetriNetUnfolder]: 71/989 cut-off events. [2022-11-18 19:48:24,998 INFO L131 PetriNetUnfolder]: For 31/35 co-relation queries the response was YES. [2022-11-18 19:48:25,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 989 events. 71/989 cut-off events. For 31/35 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5837 event pairs, 0 based on Foata normal form. 0/910 useless extension candidates. Maximal degree in co-relation 987. Up to 18 conditions per place. [2022-11-18 19:48:25,031 INFO L137 encePairwiseOnDemand]: 475/479 looper letters, 13 selfloop transitions, 1 changer transitions 0/458 dead transitions. [2022-11-18 19:48:25,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 458 transitions, 974 flow [2022-11-18 19:48:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:48:25,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1355 transitions. [2022-11-18 19:48:25,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.942936673625609 [2022-11-18 19:48:25,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1355 transitions. [2022-11-18 19:48:25,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1355 transitions. [2022-11-18 19:48:25,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:25,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1355 transitions. [2022-11-18 19:48:25,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.6666666666667) internal successors, (1355), 3 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:25,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 479.0) internal successors, (1916), 4 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:25,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 479.0) internal successors, (1916), 4 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:25,050 INFO L175 Difference]: Start difference. First operand has 437 places, 464 transitions, 958 flow. Second operand 3 states and 1355 transitions. [2022-11-18 19:48:25,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 458 transitions, 974 flow [2022-11-18 19:48:25,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 458 transitions, 966 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:48:25,064 INFO L231 Difference]: Finished difference. Result has 432 places, 458 transitions, 940 flow [2022-11-18 19:48:25,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=479, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=940, PETRI_PLACES=432, PETRI_TRANSITIONS=458} [2022-11-18 19:48:25,066 INFO L288 CegarLoopForPetriNet]: 435 programPoint places, -3 predicate places. [2022-11-18 19:48:25,067 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 458 transitions, 940 flow [2022-11-18 19:48:25,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:25,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:25,069 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:25,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:48:25,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 19:48:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:25,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1982298682, now seen corresponding path program 1 times [2022-11-18 19:48:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:25,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901425394] [2022-11-18 19:48:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:48:25,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:25,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901425394] [2022-11-18 19:48:25,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901425394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:25,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:25,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:48:25,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251913350] [2022-11-18 19:48:25,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:25,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:25,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:25,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 479 [2022-11-18 19:48:25,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 458 transitions, 940 flow. Second operand has 5 states, 5 states have (on average 413.8) internal successors, (2069), 5 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:25,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:25,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 479 [2022-11-18 19:48:25,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:30,633 INFO L130 PetriNetUnfolder]: 2697/14599 cut-off events. [2022-11-18 19:48:30,633 INFO L131 PetriNetUnfolder]: For 108/172 co-relation queries the response was YES. [2022-11-18 19:48:30,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17681 conditions, 14599 events. 2697/14599 cut-off events. For 108/172 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 168644 event pairs, 1464 based on Foata normal form. 0/13121 useless extension candidates. Maximal degree in co-relation 17650. Up to 2942 conditions per place. [2022-11-18 19:48:30,864 INFO L137 encePairwiseOnDemand]: 471/479 looper letters, 49 selfloop transitions, 6 changer transitions 1/458 dead transitions. [2022-11-18 19:48:30,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 458 transitions, 1052 flow [2022-11-18 19:48:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:48:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2107 transitions. [2022-11-18 19:48:30,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797494780793319 [2022-11-18 19:48:30,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2107 transitions. [2022-11-18 19:48:30,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2107 transitions. [2022-11-18 19:48:30,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:30,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2107 transitions. [2022-11-18 19:48:30,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 421.4) internal successors, (2107), 5 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:30,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 479.0) internal successors, (2874), 6 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:30,892 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 479.0) internal successors, (2874), 6 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:30,892 INFO L175 Difference]: Start difference. First operand has 432 places, 458 transitions, 940 flow. Second operand 5 states and 2107 transitions. [2022-11-18 19:48:30,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 458 transitions, 1052 flow [2022-11-18 19:48:30,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 458 transitions, 1051 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:48:30,904 INFO L231 Difference]: Finished difference. Result has 434 places, 457 transitions, 960 flow [2022-11-18 19:48:30,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=479, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=960, PETRI_PLACES=434, PETRI_TRANSITIONS=457} [2022-11-18 19:48:30,906 INFO L288 CegarLoopForPetriNet]: 435 programPoint places, -1 predicate places. [2022-11-18 19:48:30,906 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 457 transitions, 960 flow [2022-11-18 19:48:30,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 413.8) internal successors, (2069), 5 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:30,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:30,909 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:30,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:48:30,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 19:48:30,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:30,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1596256468, now seen corresponding path program 1 times [2022-11-18 19:48:30,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:30,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237904558] [2022-11-18 19:48:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:30,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:48:31,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:48:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:48:31,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:48:31,180 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:48:31,181 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-18 19:48:31,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-18 19:48:31,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-18 19:48:31,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-18 19:48:31,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:48:31,185 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 19:48:31,188 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:48:31,189 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:48:31,371 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-18 19:48:31,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 665 places, 734 transitions, 1516 flow [2022-11-18 19:48:33,484 INFO L130 PetriNetUnfolder]: 384/3352 cut-off events. [2022-11-18 19:48:33,485 INFO L131 PetriNetUnfolder]: For 72/84 co-relation queries the response was YES. [2022-11-18 19:48:33,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3449 conditions, 3352 events. 384/3352 cut-off events. For 72/84 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 26958 event pairs, 2 based on Foata normal form. 0/2975 useless extension candidates. Maximal degree in co-relation 1884. Up to 64 conditions per place. [2022-11-18 19:48:33,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 665 places, 734 transitions, 1516 flow [2022-11-18 19:48:33,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 665 places, 734 transitions, 1516 flow [2022-11-18 19:48:33,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:48:33,742 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@350a3d51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:48:33,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 19:48:33,797 INFO L130 PetriNetUnfolder]: 39/409 cut-off events. [2022-11-18 19:48:33,797 INFO L131 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2022-11-18 19:48:33,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:33,798 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:33,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:48:33,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1863765971, now seen corresponding path program 1 times [2022-11-18 19:48:33,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:33,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095622725] [2022-11-18 19:48:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:33,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:48:33,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:33,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095622725] [2022-11-18 19:48:33,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095622725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:33,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:33,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:48:33,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148428846] [2022-11-18 19:48:33,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:33,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:33,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:33,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:33,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:33,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 734 [2022-11-18 19:48:33,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 734 transitions, 1516 flow. Second operand has 5 states, 5 states have (on average 680.8) internal successors, (3404), 5 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:33,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:33,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 734 [2022-11-18 19:48:33,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:36,147 INFO L130 PetriNetUnfolder]: 269/3230 cut-off events. [2022-11-18 19:48:36,148 INFO L131 PetriNetUnfolder]: For 230/287 co-relation queries the response was YES. [2022-11-18 19:48:36,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3478 conditions, 3230 events. 269/3230 cut-off events. For 230/287 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 26698 event pairs, 1 based on Foata normal form. 411/3379 useless extension candidates. Maximal degree in co-relation 1897. Up to 130 conditions per place. [2022-11-18 19:48:36,312 INFO L137 encePairwiseOnDemand]: 712/734 looper letters, 31 selfloop transitions, 4 changer transitions 0/713 dead transitions. [2022-11-18 19:48:36,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 713 transitions, 1544 flow [2022-11-18 19:48:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:48:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3458 transitions. [2022-11-18 19:48:36,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9422343324250682 [2022-11-18 19:48:36,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3458 transitions. [2022-11-18 19:48:36,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3458 transitions. [2022-11-18 19:48:36,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:36,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3458 transitions. [2022-11-18 19:48:36,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 691.6) internal successors, (3458), 5 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:36,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 734.0) internal successors, (4404), 6 states have internal predecessors, (4404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:36,350 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 734.0) internal successors, (4404), 6 states have internal predecessors, (4404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:36,351 INFO L175 Difference]: Start difference. First operand has 665 places, 734 transitions, 1516 flow. Second operand 5 states and 3458 transitions. [2022-11-18 19:48:36,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 713 transitions, 1544 flow [2022-11-18 19:48:36,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 713 transitions, 1544 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:48:36,367 INFO L231 Difference]: Finished difference. Result has 666 places, 713 transitions, 1482 flow [2022-11-18 19:48:36,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1482, PETRI_PLACES=666, PETRI_TRANSITIONS=713} [2022-11-18 19:48:36,369 INFO L288 CegarLoopForPetriNet]: 665 programPoint places, 1 predicate places. [2022-11-18 19:48:36,370 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 713 transitions, 1482 flow [2022-11-18 19:48:36,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 680.8) internal successors, (3404), 5 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:36,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:36,373 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:36,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:48:36,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:48:36,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash -51091983, now seen corresponding path program 1 times [2022-11-18 19:48:36,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:36,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628170450] [2022-11-18 19:48:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:48:36,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:36,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628170450] [2022-11-18 19:48:36,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628170450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:36,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:36,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:48:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602537219] [2022-11-18 19:48:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:36,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:36,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 689 out of 734 [2022-11-18 19:48:36,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 713 transitions, 1482 flow. Second operand has 3 states, 3 states have (on average 691.3333333333334) internal successors, (2074), 3 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:36,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:36,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 689 of 734 [2022-11-18 19:48:36,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:38,367 INFO L130 PetriNetUnfolder]: 266/3224 cut-off events. [2022-11-18 19:48:38,367 INFO L131 PetriNetUnfolder]: For 224/245 co-relation queries the response was YES. [2022-11-18 19:48:38,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 3224 events. 266/3224 cut-off events. For 224/245 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 26607 event pairs, 1 based on Foata normal form. 0/2965 useless extension candidates. Maximal degree in co-relation 3310. Up to 79 conditions per place. [2022-11-18 19:48:38,506 INFO L137 encePairwiseOnDemand]: 730/734 looper letters, 19 selfloop transitions, 1 changer transitions 0/707 dead transitions. [2022-11-18 19:48:38,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 707 transitions, 1510 flow [2022-11-18 19:48:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:48:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2090 transitions. [2022-11-18 19:48:38,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9491371480472298 [2022-11-18 19:48:38,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2090 transitions. [2022-11-18 19:48:38,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2090 transitions. [2022-11-18 19:48:38,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:38,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2090 transitions. [2022-11-18 19:48:38,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 696.6666666666666) internal successors, (2090), 3 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:38,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:38,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:38,535 INFO L175 Difference]: Start difference. First operand has 666 places, 713 transitions, 1482 flow. Second operand 3 states and 2090 transitions. [2022-11-18 19:48:38,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 707 transitions, 1510 flow [2022-11-18 19:48:38,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 707 transitions, 1502 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:48:38,555 INFO L231 Difference]: Finished difference. Result has 661 places, 707 transitions, 1464 flow [2022-11-18 19:48:38,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=659, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1464, PETRI_PLACES=661, PETRI_TRANSITIONS=707} [2022-11-18 19:48:38,558 INFO L288 CegarLoopForPetriNet]: 665 programPoint places, -4 predicate places. [2022-11-18 19:48:38,558 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 707 transitions, 1464 flow [2022-11-18 19:48:38,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 691.3333333333334) internal successors, (2074), 3 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:38,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:38,560 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:38,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:48:38,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:48:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:38,562 INFO L85 PathProgramCache]: Analyzing trace with hash -77752347, now seen corresponding path program 1 times [2022-11-18 19:48:38,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:38,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083773504] [2022-11-18 19:48:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:48:38,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:38,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083773504] [2022-11-18 19:48:38,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083773504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:38,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:38,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:48:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433359828] [2022-11-18 19:48:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:38,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:38,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 639 out of 734 [2022-11-18 19:48:38,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 707 transitions, 1464 flow. Second operand has 5 states, 5 states have (on average 643.0) internal successors, (3215), 5 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:38,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:38,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 639 of 734 [2022-11-18 19:48:38,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand