./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c --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_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/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_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/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_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/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 ca1f4e84b0c3293f862fce4d37df3243047d657a38c3742a736e55e02eaefd2e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:46,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:46,500 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:47:46,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:46,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:46,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:46,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:46,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:46,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:46,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:46,536 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:46,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:46,537 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:46,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:46,538 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:46,539 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:46,540 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:46,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:46,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:46,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:46,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:46,543 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:46,543 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:46,544 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:46,544 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:46,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:46,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:46,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:46,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:46,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:46,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:46,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:46,548 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:46,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:46,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:46,549 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:46,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:46,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:46,550 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:46,550 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_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca1f4e84b0c3293f862fce4d37df3243047d657a38c3742a736e55e02eaefd2e [2023-11-19 07:47:46,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:46,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:46,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:46,890 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:46,891 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:46,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c [2023-11-19 07:47:49,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:50,310 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:50,311 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c [2023-11-19 07:47:50,323 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu/data/ca6b6363f/db36601bcb63415a9ea4cb783a346e6d/FLAGa7705b87d [2023-11-19 07:47:50,342 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu/data/ca6b6363f/db36601bcb63415a9ea4cb783a346e6d [2023-11-19 07:47:50,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:50,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:50,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:50,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:50,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:50,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3205d719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50, skipping insertion in model container [2023-11-19 07:47:50,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:50,689 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_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c[4928,4941] [2023-11-19 07:47:50,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:50,705 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:50,738 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_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c[4928,4941] [2023-11-19 07:47:50,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:50,749 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:50,749 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:50,756 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:50,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50 WrapperNode [2023-11-19 07:47:50,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:50,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:50,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:50,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:50,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,808 INFO L138 Inliner]: procedures = 26, calls = 115, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 335 [2023-11-19 07:47:50,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:50,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:50,810 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:50,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:50,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:50,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:50,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:50,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:50,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (1/1) ... [2023-11-19 07:47:50,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:50,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:50,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:50,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c9bd3-0605-4eb9-b4c8-5790c7917dd8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:47:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:47:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:47:50,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:47:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:47:50,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:47:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:47:50,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:47:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:47:50,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:47:50,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:50,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-19 07:47:50,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-19 07:47:50,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-19 07:47:50,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-19 07:47:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-11-19 07:47:50,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-11-19 07:47:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:47:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:47:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:50,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:50,936 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 07:47:51,073 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:51,080 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:51,576 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:51,723 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:51,724 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:47:51,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:51 BoogieIcfgContainer [2023-11-19 07:47:51,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:51,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:51,737 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:51,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:51,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:50" (1/3) ... [2023-11-19 07:47:51,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c0abb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:51, skipping insertion in model container [2023-11-19 07:47:51,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:50" (2/3) ... [2023-11-19 07:47:51,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c0abb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:51, skipping insertion in model container [2023-11-19 07:47:51,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:51" (3/3) ... [2023-11-19 07:47:51,744 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-7.wvr.c [2023-11-19 07:47:51,752 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:47:51,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:51,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:47:51,761 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:47:51,872 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-11-19 07:47:51,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 225 transitions, 499 flow [2023-11-19 07:47:52,040 INFO L124 PetriNetUnfolderBase]: 2/218 cut-off events. [2023-11-19 07:47:52,040 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:47:52,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 218 events. 2/218 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 111 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2023-11-19 07:47:52,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 225 transitions, 499 flow [2023-11-19 07:47:52,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 199 transitions, 440 flow [2023-11-19 07:47:52,057 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:52,068 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 199 transitions, 440 flow [2023-11-19 07:47:52,071 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 199 transitions, 440 flow [2023-11-19 07:47:52,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 199 transitions, 440 flow [2023-11-19 07:47:52,221 INFO L124 PetriNetUnfolderBase]: 2/199 cut-off events. [2023-11-19 07:47:52,222 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:47:52,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 199 events. 2/199 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2023-11-19 07:47:52,227 INFO L119 LiptonReduction]: Number of co-enabled transitions 5160 [2023-11-19 07:48:03,426 INFO L134 LiptonReduction]: Checked pairs total: 23944 [2023-11-19 07:48:03,426 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-19 07:48:03,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:03,450 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;@50b2e53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:03,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:48:03,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:48:03,473 INFO L124 PetriNetUnfolderBase]: 0/57 cut-off events. [2023-11-19 07:48:03,473 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:48:03,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:03,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:03,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-19 07:48:03,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1537756634, now seen corresponding path program 1 times [2023-11-19 07:48:03,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:03,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874194286] [2023-11-19 07:48:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:03,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:06,304 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 07:48:06,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874194286] [2023-11-19 07:48:06,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874194286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:06,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:06,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:06,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89089055] [2023-11-19 07:48:06,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:06,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:48:06,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:06,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:48:06,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:06,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 375 [2023-11-19 07:48:06,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 58 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 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 07:48:06,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:06,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 375 [2023-11-19 07:48:06,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand