./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya --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 462fb42b593b74362524fb8209dde3f76380a79de0c48b612eb75bd0eda8df1c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:15:20,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:15:20,341 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:15:20,345 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:15:20,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:15:20,367 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:15:20,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:15:20,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:15:20,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:15:20,370 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:15:20,370 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:15:20,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:15:20,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:15:20,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:15:20,373 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:15:20,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:15:20,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:15:20,374 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:15:20,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:15:20,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:15:20,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:15:20,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:15:20,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:15:20,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:15:20,377 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:15:20,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:15:20,378 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:15:20,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:15:20,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:15:20,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:15:20,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:15:20,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:15:20,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:15:20,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:15:20,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:15:20,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:15:20,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:15:20,381 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:15:20,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:15:20,381 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:15:20,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:15:20,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:15:20,382 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_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 462fb42b593b74362524fb8209dde3f76380a79de0c48b612eb75bd0eda8df1c [2023-11-29 03:15:20,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:15:20,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:15:20,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:15:20,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:15:20,632 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:15:20,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-11-29 03:15:23,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:15:23,544 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:15:23,544 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-11-29 03:15:23,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/data/ae1e19257/b5a3b1b4601e4b9191b8f893864afcc2/FLAGbc125623a [2023-11-29 03:15:23,564 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/data/ae1e19257/b5a3b1b4601e4b9191b8f893864afcc2 [2023-11-29 03:15:23,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:15:23,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:15:23,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:15:23,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:15:23,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:15:23,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25fec2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23, skipping insertion in model container [2023-11-29 03:15:23,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,606 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:15:23,779 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_f4575b1e-83bc-4fdf-b863-4cd1a227b155/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4450,4463] [2023-11-29 03:15:23,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:15:23,802 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:15:23,832 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_f4575b1e-83bc-4fdf-b863-4cd1a227b155/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4450,4463] [2023-11-29 03:15:23,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:15:23,847 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:15:23,847 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:15:23,853 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:15:23,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23 WrapperNode [2023-11-29 03:15:23,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:15:23,854 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:15:23,854 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:15:23,854 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:15:23,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,905 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 307 [2023-11-29 03:15:23,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:15:23,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:15:23,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:15:23,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:15:23,915 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,921 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,937 INFO L175 MemorySlicer]: Split 19 memory accesses to 8 slices as follows [2, 2, 2, 2, 5, 2, 2, 2]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1]. [2023-11-29 03:15:23,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,952 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:15:23,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:15:23,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:15:23,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:15:23,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (1/1) ... [2023-11-29 03:15:23,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:15:23,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:24,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:15:24,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4575b1e-83bc-4fdf-b863-4cd1a227b155/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:15:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:15:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:15:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:15:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:15:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:15:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:15:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:15:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 03:15:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 03:15:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 03:15:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:15:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:15:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:15:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:15:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:15:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 03:15:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 03:15:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 03:15:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:15:24,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:15:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:15:24,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:15:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 03:15:24,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 03:15:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 03:15:24,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 03:15:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:15:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:15:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:15:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:15:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:15:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 03:15:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 03:15:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 03:15:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-29 03:15:24,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-29 03:15:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-29 03:15:24,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-29 03:15:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 03:15:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 03:15:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:15:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:15:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:15:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:15:24,084 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:15:24,219 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:15:24,220 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:15:24,629 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:15:24,978 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:15:24,978 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 03:15:24,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:15:24 BoogieIcfgContainer [2023-11-29 03:15:24,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:15:24,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:15:24,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:15:24,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:15:24,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:15:23" (1/3) ... [2023-11-29 03:15:24,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3b4b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:15:24, skipping insertion in model container [2023-11-29 03:15:24,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:23" (2/3) ... [2023-11-29 03:15:24,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3b4b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:15:24, skipping insertion in model container [2023-11-29 03:15:24,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:15:24" (3/3) ... [2023-11-29 03:15:24,987 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2023-11-29 03:15:24,996 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:15:25,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:15:25,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:15:25,006 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:15:25,114 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-29 03:15:25,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 244 flow [2023-11-29 03:15:25,193 INFO L124 PetriNetUnfolderBase]: 13/75 cut-off events. [2023-11-29 03:15:25,193 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 03:15:25,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 75 events. 13/75 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 179 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2023-11-29 03:15:25,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 244 flow [2023-11-29 03:15:25,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 74 transitions, 196 flow [2023-11-29 03:15:25,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:15:25,219 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;@260611b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:15:25,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 03:15:25,245 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:15:25,245 INFO L124 PetriNetUnfolderBase]: 13/73 cut-off events. [2023-11-29 03:15:25,245 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 03:15:25,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:15:25,246 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] [2023-11-29 03:15:25,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-29 03:15:25,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:25,252 INFO L85 PathProgramCache]: Analyzing trace with hash -620164665, now seen corresponding path program 1 times [2023-11-29 03:15:25,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:25,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046615114] [2023-11-29 03:15:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:25,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:15:25,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:25,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046615114] [2023-11-29 03:15:25,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046615114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:25,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:25,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:15:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933350390] [2023-11-29 03:15:25,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:15:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:15:25,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:15:25,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-29 03:15:25,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 196 flow. Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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) [2023-11-29 03:15:25,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:15:25,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-29 03:15:25,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:15:41,194 INFO L124 PetriNetUnfolderBase]: 165722/207931 cut-off events. [2023-11-29 03:15:41,194 INFO L125 PetriNetUnfolderBase]: For 14694/14694 co-relation queries the response was YES. [2023-11-29 03:15:41,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426136 conditions, 207931 events. 165722/207931 cut-off events. For 14694/14694 co-relation queries the response was YES. Maximal size of possible extension queue 7880. Compared 1209735 event pairs, 127661 based on Foata normal form. 33320/202150 useless extension candidates. Maximal degree in co-relation 424000. Up to 200859 conditions per place. [2023-11-29 03:15:42,512 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 61 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2023-11-29 03:15:42,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 70 transitions, 310 flow [2023-11-29 03:15:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:15:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 03:15:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 95 transitions. [2023-11-29 03:15:42,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2023-11-29 03:15:42,523 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 95 transitions. [2023-11-29 03:15:42,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 95 transitions. [2023-11-29 03:15:42,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:15:42,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 95 transitions. [2023-11-29 03:15:42,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 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) [2023-11-29 03:15:42,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-11-29 03:15:42,532 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-11-29 03:15:42,534 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 196 flow. Second operand 2 states and 95 transitions. [2023-11-29 03:15:42,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 70 transitions, 310 flow [2023-11-29 03:15:42,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 278 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-29 03:15:42,936 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 156 flow [2023-11-29 03:15:42,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-11-29 03:15:42,940 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -11 predicate places. [2023-11-29 03:15:42,940 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 156 flow [2023-11-29 03:15:42,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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) [2023-11-29 03:15:42,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:15:42,941 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] [2023-11-29 03:15:42,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:15:42,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-29 03:15:42,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash 704973535, now seen corresponding path program 1 times [2023-11-29 03:15:42,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:42,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795121437] [2023-11-29 03:15:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:15:43,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795121437] [2023-11-29 03:15:43,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795121437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:43,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:43,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:15:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954378568] [2023-11-29 03:15:43,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:43,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:15:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:15:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:15:43,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-29 03:15:43,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 03:15:43,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:15:43,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-29 03:15:43,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:16:11,756 INFO L124 PetriNetUnfolderBase]: 362650/452123 cut-off events. [2023-11-29 03:16:11,756 INFO L125 PetriNetUnfolderBase]: For 6440/6440 co-relation queries the response was YES. [2023-11-29 03:16:12,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905254 conditions, 452123 events. 362650/452123 cut-off events. For 6440/6440 co-relation queries the response was YES. Maximal size of possible extension queue 15994. Compared 2844014 event pairs, 134409 based on Foata normal form. 1/374491 useless extension candidates. Maximal degree in co-relation 905251. Up to 202183 conditions per place. [2023-11-29 03:16:14,201 INFO L140 encePairwiseOnDemand]: 86/93 looper letters, 155 selfloop transitions, 8 changer transitions 1/173 dead transitions. [2023-11-29 03:16:14,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 173 transitions, 718 flow [2023-11-29 03:16:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:16:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:16:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2023-11-29 03:16:14,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2023-11-29 03:16:14,205 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 225 transitions. [2023-11-29 03:16:14,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 225 transitions. [2023-11-29 03:16:14,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:16:14,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 225 transitions. [2023-11-29 03:16:14,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2023-11-29 03:16:14,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-11-29 03:16:14,210 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-11-29 03:16:14,210 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 156 flow. Second operand 4 states and 225 transitions. [2023-11-29 03:16:14,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 173 transitions, 718 flow [2023-11-29 03:16:14,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 173 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:16:14,215 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 209 flow [2023-11-29 03:16:14,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2023-11-29 03:16:14,216 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -6 predicate places. [2023-11-29 03:16:14,217 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 209 flow [2023-11-29 03:16:14,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 03:16:14,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:16:14,217 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] [2023-11-29 03:16:14,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:16:14,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-29 03:16:14,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:16:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash -358368651, now seen corresponding path program 2 times [2023-11-29 03:16:14,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:16:14,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829258108] [2023-11-29 03:16:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:16:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:16:14,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:16:14,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829258108] [2023-11-29 03:16:14,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829258108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:16:14,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:16:14,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:16:14,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56552880] [2023-11-29 03:16:14,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:16:14,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:16:14,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:16:14,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:16:14,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:16:14,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-29 03:16:14,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 03:16:14,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:16:14,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-29 03:16:14,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:16:59,531 INFO L124 PetriNetUnfolderBase]: 552794/686551 cut-off events. [2023-11-29 03:16:59,532 INFO L125 PetriNetUnfolderBase]: For 59638/59638 co-relation queries the response was YES. [2023-11-29 03:17:00,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468879 conditions, 686551 events. 552794/686551 cut-off events. For 59638/59638 co-relation queries the response was YES. Maximal size of possible extension queue 22763. Compared 4436753 event pairs, 211637 based on Foata normal form. 1/573501 useless extension candidates. Maximal degree in co-relation 1468873. Up to 342415 conditions per place. [2023-11-29 03:17:03,648 INFO L140 encePairwiseOnDemand]: 86/93 looper letters, 157 selfloop transitions, 11 changer transitions 1/178 dead transitions. [2023-11-29 03:17:03,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 178 transitions, 799 flow [2023-11-29 03:17:03,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:17:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2023-11-29 03:17:03,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5994623655913979 [2023-11-29 03:17:03,651 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 223 transitions. [2023-11-29 03:17:03,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 223 transitions. [2023-11-29 03:17:03,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:17:03,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 223 transitions. [2023-11-29 03:17:03,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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) [2023-11-29 03:17:03,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-11-29 03:17:03,655 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-11-29 03:17:03,655 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 209 flow. Second operand 4 states and 223 transitions. [2023-11-29 03:17:03,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 178 transitions, 799 flow [2023-11-29 03:17:03,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 178 transitions, 799 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:17:03,718 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 288 flow [2023-11-29 03:17:03,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-11-29 03:17:03,719 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2023-11-29 03:17:03,719 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 288 flow [2023-11-29 03:17:03,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 03:17:03,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:17:03,720 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-11-29 03:17:03,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:17:03,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-29 03:17:03,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:03,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1884626581, now seen corresponding path program 1 times [2023-11-29 03:17:03,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:03,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253368209] [2023-11-29 03:17:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:03,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:03,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:03,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253368209] [2023-11-29 03:17:03,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253368209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:03,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:03,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:17:03,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168784097] [2023-11-29 03:17:03,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:03,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:17:03,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:03,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:17:03,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:17:03,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-29 03:17:03,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2023-11-29 03:17:03,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:17:03,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-29 03:17:03,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand