./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9184a10f76289bc351ce16b4243b6d0e46782fe8318237a8a819d2b43a92673 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:02:12,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:02:12,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 01:02:12,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:02:12,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:02:12,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:02:12,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:02:12,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:02:12,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:02:12,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:02:12,333 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:02:12,334 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:02:12,335 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:02:12,335 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:02:12,336 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:02:12,337 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:02:12,338 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:02:12,339 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:02:12,339 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:02:12,340 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:02:12,341 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:02:12,342 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:02:12,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:02:12,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:02:12,345 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:02:12,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:02:12,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:02:12,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:02:12,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:02:12,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:02:12,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:02:12,349 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:02:12,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:02:12,350 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:02:12,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:02:12,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:02:12,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:12,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:02:12,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:02:12,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:02:12,354 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:02:12,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:02:12,356 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:02:12,356 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:02:12,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:02:12,357 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9184a10f76289bc351ce16b4243b6d0e46782fe8318237a8a819d2b43a92673 [2023-11-12 01:02:12,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:02:12,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:02:12,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:02:12,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:02:12,713 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:02:12,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2023-11-12 01:02:16,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:02:16,981 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:02:16,982 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2023-11-12 01:02:16,994 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/data/fe03c0a80/37a09c790e1d40649591fe45ee9d1f2b/FLAGd038601b1 [2023-11-12 01:02:17,014 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/data/fe03c0a80/37a09c790e1d40649591fe45ee9d1f2b [2023-11-12 01:02:17,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:02:17,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:02:17,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:02:17,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:02:17,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:02:17,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec0a27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17, skipping insertion in model container [2023-11-12 01:02:17,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,103 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:02:17,341 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_a7530a65-36ca-4e06-a608-2e8ecb137933/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c[5378,5391] [2023-11-12 01:02:17,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:02:17,364 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:02:17,410 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_a7530a65-36ca-4e06-a608-2e8ecb137933/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c[5378,5391] [2023-11-12 01:02:17,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:02:17,425 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:17,425 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:17,435 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:02:17,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17 WrapperNode [2023-11-12 01:02:17,436 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:02:17,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:02:17,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:02:17,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:02:17,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,538 INFO L138 Inliner]: procedures = 27, calls = 130, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 377 [2023-11-12 01:02:17,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:02:17,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:02:17,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:02:17,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:02:17,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,609 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:02:17,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:02:17,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:02:17,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:02:17,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (1/1) ... [2023-11-12 01:02:17,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:17,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:17,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:02:17,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7530a65-36ca-4e06-a608-2e8ecb137933/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:02:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:02:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:02:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:02:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:02:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 01:02:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 01:02:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 01:02:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 01:02:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 01:02:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 01:02:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 01:02:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 01:02:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:02:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-12 01:02:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-12 01:02:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-12 01:02:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-12 01:02:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-11-12 01:02:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-11-12 01:02:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2023-11-12 01:02:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2023-11-12 01:02:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 01:02:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 01:02:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:02:17,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:02:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:02:17,742 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 01:02:17,913 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:02:17,915 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:02:18,488 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:02:18,668 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:02:18,669 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 01:02:18,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:18 BoogieIcfgContainer [2023-11-12 01:02:18,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:02:18,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:02:18,676 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:02:18,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:02:18,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:02:17" (1/3) ... [2023-11-12 01:02:18,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a989737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:02:18, skipping insertion in model container [2023-11-12 01:02:18,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:17" (2/3) ... [2023-11-12 01:02:18,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a989737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:02:18, skipping insertion in model container [2023-11-12 01:02:18,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:18" (3/3) ... [2023-11-12 01:02:18,685 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2023-11-12 01:02:18,697 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 01:02:18,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:02:18,712 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:02:18,712 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 01:02:18,906 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-12 01:02:18,959 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:02:18,978 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 250 transitions, 556 flow [2023-11-12 01:02:18,982 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 250 transitions, 556 flow [2023-11-12 01:02:18,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 250 transitions, 556 flow [2023-11-12 01:02:19,214 INFO L124 PetriNetUnfolderBase]: 2/242 cut-off events. [2023-11-12 01:02:19,214 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-12 01:02:19,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 242 events. 2/242 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 130 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 192. Up to 2 conditions per place. [2023-11-12 01:02:19,234 INFO L119 LiptonReduction]: Number of co-enabled transitions 6796 [2023-11-12 01:02:41,721 INFO L134 LiptonReduction]: Checked pairs total: 14498 [2023-11-12 01:02:41,722 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-11-12 01:02:41,731 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 59 transitions, 174 flow [2023-11-12 01:02:44,099 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32802 states, 32801 states have (on average 5.667327215633669) internal successors, (185894), 32801 states have internal predecessors, (185894), 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) [2023-11-12 01:02:44,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:02:44,138 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=FINITE_AUTOMATA, 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;@193e8941, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:02:44,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-12 01:02:44,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 32802 states, 32801 states have (on average 5.667327215633669) internal successors, (185894), 32801 states have internal predecessors, (185894), 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) [2023-11-12 01:02:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-12 01:02:44,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:44,882 INFO L195 NwaCegarLoop]: 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] [2023-11-12 01:02:44,883 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 6 more)] === [2023-11-12 01:02:44,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1661660404, now seen corresponding path program 1 times [2023-11-12 01:02:44,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:44,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841445484] [2023-11-12 01:02:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:44,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:02:46,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:46,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841445484] [2023-11-12 01:02:46,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841445484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:46,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:46,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 01:02:46,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498110055] [2023-11-12 01:02:46,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:46,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 01:02:46,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 01:02:46,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:02:46,685 INFO L87 Difference]: Start difference. First operand has 32802 states, 32801 states have (on average 5.667327215633669) internal successors, (185894), 32801 states have internal predecessors, (185894), 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) Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-11-12 01:02:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:50,703 INFO L93 Difference]: Finished difference Result 104494 states and 570543 transitions. [2023-11-12 01:02:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:02:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) Word has length 50 [2023-11-12 01:02:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:52,510 INFO L225 Difference]: With dead ends: 104494 [2023-11-12 01:02:52,510 INFO L226 Difference]: Without dead ends: 104494 [2023-11-12 01:02:52,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:02:52,521 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 114 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:52,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 0 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 01:02:53,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104494 states. [2023-11-12 01:02:58,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104494 to 64012. [2023-11-12 01:02:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64012 states, 64011 states have (on average 5.59069534923685) internal successors, (357866), 64011 states have internal predecessors, (357866), 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) [2023-11-12 01:02:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64012 states to 64012 states and 357866 transitions. [2023-11-12 01:02:59,880 INFO L78 Accepts]: Start accepts. Automaton has 64012 states and 357866 transitions. Word has length 50 [2023-11-12 01:02:59,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:59,882 INFO L495 AbstractCegarLoop]: Abstraction has 64012 states and 357866 transitions. [2023-11-12 01:02:59,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-11-12 01:02:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 64012 states and 357866 transitions. [2023-11-12 01:03:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-12 01:03:00,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:00,299 INFO L195 NwaCegarLoop]: 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] [2023-11-12 01:03:00,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:03:00,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-12 01:03:00,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:00,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1114047844, now seen corresponding path program 2 times [2023-11-12 01:03:00,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:00,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986634457] [2023-11-12 01:03:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:00,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat