./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX --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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:24:29,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:24:29,740 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:24:29,748 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:24:29,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:24:29,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:24:29,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:24:29,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:24:29,785 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:24:29,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:24:29,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:24:29,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:24:29,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:24:29,790 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:24:29,790 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:24:29,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:24:29,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:24:29,791 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:24:29,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:24:29,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:24:29,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:24:29,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:24:29,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:24:29,797 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:24:29,797 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:24:29,797 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:24:29,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:24:29,798 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:24:29,798 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:24:29,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:24:29,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:24:29,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:24:29,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:24:29,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:24:29,803 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:24:29,804 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:24:29,804 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:24:29,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:24:29,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:24:29,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:24:29,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:24:29,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:24:29,806 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_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 [2024-11-08 16:24:30,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:24:30,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:24:30,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:24:30,179 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:24:30,179 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:24:30,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread/reorder_2.i Unable to find full path for "g++" [2024-11-08 16:24:32,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:24:32,472 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:24:32,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/sv-benchmarks/c/pthread/reorder_2.i [2024-11-08 16:24:32,499 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/data/86ac9aed7/a606bde5d9d1480086dcb99be7d435c3/FLAG9b63baa4e [2024-11-08 16:24:32,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/data/86ac9aed7/a606bde5d9d1480086dcb99be7d435c3 [2024-11-08 16:24:32,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:24:32,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:24:32,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:24:32,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:24:32,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:24:32,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:24:32" (1/1) ... [2024-11-08 16:24:32,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d219c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:32, skipping insertion in model container [2024-11-08 16:24:32,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:24:32" (1/1) ... [2024-11-08 16:24:32,650 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:24:33,408 WARN L250 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_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/sv-benchmarks/c/pthread/reorder_2.i[60219,60232] [2024-11-08 16:24:33,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:24:33,427 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:24:33,491 WARN L250 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_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/sv-benchmarks/c/pthread/reorder_2.i[60219,60232] [2024-11-08 16:24:33,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:24:33,642 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:24:33,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33 WrapperNode [2024-11-08 16:24:33,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:24:33,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:24:33,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:24:33,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:24:33,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,710 INFO L138 Inliner]: procedures = 372, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2024-11-08 16:24:33,710 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:24:33,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:24:33,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:24:33,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:24:33,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,726 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,755 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-08 16:24:33,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,768 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:24:33,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:24:33,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:24:33,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:24:33,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (1/1) ... [2024-11-08 16:24:33,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:24:33,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:24:33,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:24:33,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac010551-ef7a-44e4-a2eb-e7aba169c5bd/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:24:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 16:24:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:24:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:24:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 16:24:33,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:24:33,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:24:33,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 16:24:33,875 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-11-08 16:24:33,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-11-08 16:24:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:24:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:24:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 16:24:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:24:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-11-08 16:24:33,879 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-11-08 16:24:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:24:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:24:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 16:24:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:24:33,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:24:33,881 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:24:34,063 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:24:34,065 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:24:34,333 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:24:34,333 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:24:34,547 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:24:34,548 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:24:34,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:24:34 BoogieIcfgContainer [2024-11-08 16:24:34,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:24:34,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:24:34,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:24:34,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:24:34,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:24:32" (1/3) ... [2024-11-08 16:24:34,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40755e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:24:34, skipping insertion in model container [2024-11-08 16:24:34,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:24:33" (2/3) ... [2024-11-08 16:24:34,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40755e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:24:34, skipping insertion in model container [2024-11-08 16:24:34,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:24:34" (3/3) ... [2024-11-08 16:24:34,559 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2024-11-08 16:24:34,577 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:24:34,578 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:24:34,578 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:24:34,631 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 16:24:34,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 45 transitions, 110 flow [2024-11-08 16:24:34,749 INFO L124 PetriNetUnfolderBase]: 24/114 cut-off events. [2024-11-08 16:24:34,749 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-08 16:24:34,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 114 events. 24/114 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 411 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2024-11-08 16:24:34,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 45 transitions, 110 flow [2024-11-08 16:24:34,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 43 transitions, 100 flow [2024-11-08 16:24:34,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:24:34,801 INFO L333 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, 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;@35450f42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:24:34,802 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 16:24:34,832 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:24:34,833 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2024-11-08 16:24:34,833 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:24:34,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:24:34,834 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 16:24:34,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:24:34,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:24:34,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1437672732, now seen corresponding path program 1 times [2024-11-08 16:24:34,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:24:34,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909115667] [2024-11-08 16:24:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:24:34,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:24:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:24:35,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:24:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:24:35,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:24:35,133 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:24:35,134 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-08 16:24:35,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-08 16:24:35,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-08 16:24:35,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-08 16:24:35,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:24:35,140 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 16:24:35,144 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:24:35,147 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 16:24:35,190 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-08 16:24:35,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 63 transitions, 170 flow [2024-11-08 16:24:35,311 INFO L124 PetriNetUnfolderBase]: 107/391 cut-off events. [2024-11-08 16:24:35,311 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2024-11-08 16:24:35,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 391 events. 107/391 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1906 event pairs, 1 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 245. Up to 32 conditions per place. [2024-11-08 16:24:35,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 63 transitions, 170 flow [2024-11-08 16:24:35,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 63 transitions, 170 flow [2024-11-08 16:24:35,322 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:24:35,325 INFO L333 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, 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;@35450f42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:24:35,326 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 16:24:35,337 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:24:35,337 INFO L124 PetriNetUnfolderBase]: 11/70 cut-off events. [2024-11-08 16:24:35,337 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2024-11-08 16:24:35,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:24:35,339 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:24:35,339 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 16:24:35,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:24:35,340 INFO L85 PathProgramCache]: Analyzing trace with hash -512793182, now seen corresponding path program 1 times [2024-11-08 16:24:35,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:24:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144167836] [2024-11-08 16:24:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:24:35,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:24:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:24:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:24:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:24:35,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144167836] [2024-11-08 16:24:35,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144167836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:24:35,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:24:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:24:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962301483] [2024-11-08 16:24:35,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:24:35,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:24:35,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:24:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:24:35,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:24:35,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-08 16:24:35,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-08 16:24:35,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:24:35,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-08 16:24:35,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:24:40,265 INFO L124 PetriNetUnfolderBase]: 20806/32231 cut-off events. [2024-11-08 16:24:40,265 INFO L125 PetriNetUnfolderBase]: For 4439/4439 co-relation queries the response was YES. [2024-11-08 16:24:40,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62316 conditions, 32231 events. 20806/32231 cut-off events. For 4439/4439 co-relation queries the response was YES. Maximal size of possible extension queue 1842. Compared 265366 event pairs, 5542 based on Foata normal form. 2492/32614 useless extension candidates. Maximal degree in co-relation 46449. Up to 16598 conditions per place. [2024-11-08 16:24:40,488 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 130 selfloop transitions, 14 changer transitions 6/176 dead transitions. [2024-11-08 16:24:40,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 176 transitions, 800 flow [2024-11-08 16:24:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:24:40,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:24:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 369 transitions. [2024-11-08 16:24:40,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7321428571428571 [2024-11-08 16:24:40,505 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 170 flow. Second operand 8 states and 369 transitions. [2024-11-08 16:24:40,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 176 transitions, 800 flow [2024-11-08 16:24:40,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 176 transitions, 800 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:24:40,526 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 273 flow [2024-11-08 16:24:40,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=273, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2024-11-08 16:24:40,533 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2024-11-08 16:24:40,533 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 273 flow [2024-11-08 16:24:40,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-08 16:24:40,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:24:40,534 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-08 16:24:40,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:24:40,535 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 16:24:40,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:24:40,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1251198216, now seen corresponding path program 1 times [2024-11-08 16:24:40,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:24:40,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774286362] [2024-11-08 16:24:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:24:40,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:24:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:24:40,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:24:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:24:40,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:24:40,629 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:24:40,629 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-08 16:24:40,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-08 16:24:40,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-08 16:24:40,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-08 16:24:40,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-08 16:24:40,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:24:40,630 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 16:24:40,631 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:24:40,631 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 16:24:40,674 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-11-08 16:24:40,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 81 transitions, 234 flow [2024-11-08 16:24:40,809 INFO L124 PetriNetUnfolderBase]: 496/1394 cut-off events. [2024-11-08 16:24:40,809 INFO L125 PetriNetUnfolderBase]: For 419/427 co-relation queries the response was YES. [2024-11-08 16:24:40,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 1394 events. 496/1394 cut-off events. For 419/427 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8274 event pairs, 32 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 918. Up to 192 conditions per place. [2024-11-08 16:24:40,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 81 transitions, 234 flow [2024-11-08 16:24:40,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 81 transitions, 234 flow [2024-11-08 16:24:40,826 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:24:40,827 INFO L333 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, 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;@35450f42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:24:40,827 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-08 16:24:40,833 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:24:40,833 INFO L124 PetriNetUnfolderBase]: 11/70 cut-off events. [2024-11-08 16:24:40,833 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2024-11-08 16:24:40,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:24:40,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:24:40,834 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 16:24:40,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:24:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash -83210328, now seen corresponding path program 1 times [2024-11-08 16:24:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:24:40,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570531638] [2024-11-08 16:24:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:24:40,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:24:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:24:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:24:40,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:24:40,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570531638] [2024-11-08 16:24:40,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570531638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:24:40,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:24:40,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:24:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661479241] [2024-11-08 16:24:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:24:40,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:24:40,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:24:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:24:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:24:41,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-08 16:24:41,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2024-11-08 16:24:41,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:24:41,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-08 16:24:41,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand