./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 9bd2c7ff 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_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/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_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 462fb42b593b74362524fb8209dde3f76380a79de0c48b612eb75bd0eda8df1c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:17,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:17,326 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:01:17,331 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:17,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:17,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:17,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:17,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:17,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:17,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:17,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:17,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:17,412 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:17,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:17,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:01:17,415 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:17,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:17,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:17,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:17,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:01:17,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:17,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:01:17,420 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:17,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:01:17,421 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:17,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:17,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:17,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:17,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:17,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:17,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:17,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:01:17,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:17,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:17,427 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:17,428 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:01:17,428 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:17,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:17,428 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:17,429 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_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 462fb42b593b74362524fb8209dde3f76380a79de0c48b612eb75bd0eda8df1c [2023-11-19 08:01:17,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:17,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:17,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:17,832 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:17,832 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:17,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-11-19 08:01:21,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:21,414 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:21,415 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-11-19 08:01:21,432 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/data/35aec0098/b6708e9126d44859a2a8e198196601ff/FLAG2fe53ac3a [2023-11-19 08:01:21,458 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/data/35aec0098/b6708e9126d44859a2a8e198196601ff [2023-11-19 08:01:21,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:21,469 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:21,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:21,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:21,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:21,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b69178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21, skipping insertion in model container [2023-11-19 08:01:21,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,540 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:21,790 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_1f328eba-756a-43e2-9409-060b73d79787/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4450,4463] [2023-11-19 08:01:21,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:21,824 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:21,861 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_1f328eba-756a-43e2-9409-060b73d79787/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4450,4463] [2023-11-19 08:01:21,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:21,877 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:21,878 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:21,887 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:21,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21 WrapperNode [2023-11-19 08:01:21,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:21,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:21,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:21,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:21,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,952 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 307 [2023-11-19 08:01:21,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:21,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:21,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:21,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:21,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:21,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:22,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:22,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:22,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:22,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:22,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (1/1) ... [2023-11-19 08:01:22,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:22,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:22,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:22,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f328eba-756a-43e2-9409-060b73d79787/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:01:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:01:22,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:01:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:01:22,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:01:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 08:01:22,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 08:01:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 08:01:22,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 08:01:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-19 08:01:22,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-19 08:01:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-19 08:01:22,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-19 08:01:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:01:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:01:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:01:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:22,107 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:01:22,253 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:22,256 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:22,953 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:23,331 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:23,332 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 08:01:23,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:23 BoogieIcfgContainer [2023-11-19 08:01:23,338 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:23,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:23,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:23,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:23,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:21" (1/3) ... [2023-11-19 08:01:23,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5397c605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:23, skipping insertion in model container [2023-11-19 08:01:23,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:21" (2/3) ... [2023-11-19 08:01:23,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5397c605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:23, skipping insertion in model container [2023-11-19 08:01:23,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:23" (3/3) ... [2023-11-19 08:01:23,350 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2023-11-19 08:01:23,362 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:01:23,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:23,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:01:23,376 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:01:23,575 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-19 08:01:23,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 277 transitions, 620 flow [2023-11-19 08:01:23,813 INFO L124 PetriNetUnfolderBase]: 18/249 cut-off events. [2023-11-19 08:01:23,814 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:01:23,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 249 events. 18/249 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 322 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 215. Up to 3 conditions per place. [2023-11-19 08:01:23,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 277 transitions, 620 flow [2023-11-19 08:01:23,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 240 transitions, 528 flow [2023-11-19 08:01:23,840 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:23,850 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 240 transitions, 528 flow [2023-11-19 08:01:23,857 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 240 transitions, 528 flow [2023-11-19 08:01:23,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 240 transitions, 528 flow [2023-11-19 08:01:23,998 INFO L124 PetriNetUnfolderBase]: 18/240 cut-off events. [2023-11-19 08:01:23,998 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:01:24,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 240 events. 18/240 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 321 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 215. Up to 3 conditions per place. [2023-11-19 08:01:24,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 8796 [2023-11-19 08:01:31,519 INFO L134 LiptonReduction]: Checked pairs total: 35435 [2023-11-19 08:01:31,519 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-11-19 08:01:31,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:01:31,542 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;@306304d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:01:31,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 08:01:31,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:01:31,558 INFO L124 PetriNetUnfolderBase]: 9/68 cut-off events. [2023-11-19 08:01:31,558 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:01:31,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:31,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:31,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 08:01:31,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1426897157, now seen corresponding path program 1 times [2023-11-19 08:01:31,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:31,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418053771] [2023-11-19 08:01:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:31,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:32,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:32,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418053771] [2023-11-19 08:01:32,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418053771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:32,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:32,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093482413] [2023-11-19 08:01:32,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:32,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:32,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:32,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:32,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 480 [2023-11-19 08:01:32,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 237.5) internal successors, (950), 4 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:32,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:32,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 480 [2023-11-19 08:01:32,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:40,355 INFO L124 PetriNetUnfolderBase]: 43386/57154 cut-off events. [2023-11-19 08:01:40,356 INFO L125 PetriNetUnfolderBase]: For 7302/7348 co-relation queries the response was YES. [2023-11-19 08:01:40,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118820 conditions, 57154 events. 43386/57154 cut-off events. For 7302/7348 co-relation queries the response was YES. Maximal size of possible extension queue 1772. Compared 330557 event pairs, 13879 based on Foata normal form. 15/42232 useless extension candidates. Maximal degree in co-relation 117080. Up to 28379 conditions per place. [2023-11-19 08:01:40,867 INFO L140 encePairwiseOnDemand]: 473/480 looper letters, 112 selfloop transitions, 8 changer transitions 1/143 dead transitions. [2023-11-19 08:01:40,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 143 transitions, 657 flow [2023-11-19 08:01:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:40,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:01:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1038 transitions. [2023-11-19 08:01:40,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540625 [2023-11-19 08:01:40,898 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1038 transitions. [2023-11-19 08:01:40,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1038 transitions. [2023-11-19 08:01:40,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:40,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1038 transitions. [2023-11-19 08:01:40,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 259.5) internal successors, (1038), 4 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:40,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:40,929 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:40,931 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 186 flow. Second operand 4 states and 1038 transitions. [2023-11-19 08:01:40,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 143 transitions, 657 flow [2023-11-19 08:01:41,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 143 transitions, 571 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-19 08:01:41,235 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 207 flow [2023-11-19 08:01:41,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2023-11-19 08:01:41,244 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -7 predicate places. [2023-11-19 08:01:41,245 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 207 flow [2023-11-19 08:01:41,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.5) internal successors, (950), 4 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:41,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:41,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:41,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:01:41,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 08:01:41,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash -646495021, now seen corresponding path program 2 times [2023-11-19 08:01:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:41,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149728527] [2023-11-19 08:01:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:41,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:41,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:41,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149728527] [2023-11-19 08:01:41,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149728527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:41,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:41,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:41,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009412674] [2023-11-19 08:01:41,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:41,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:41,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 480 [2023-11-19 08:01:41,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 237.5) internal successors, (950), 4 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:41,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:41,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 480 [2023-11-19 08:01:41,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:50,320 INFO L124 PetriNetUnfolderBase]: 60801/81969 cut-off events. [2023-11-19 08:01:50,320 INFO L125 PetriNetUnfolderBase]: For 14782/14786 co-relation queries the response was YES. [2023-11-19 08:01:50,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176563 conditions, 81969 events. 60801/81969 cut-off events. For 14782/14786 co-relation queries the response was YES. Maximal size of possible extension queue 2637. Compared 514878 event pairs, 19827 based on Foata normal form. 1/61101 useless extension candidates. Maximal degree in co-relation 78842. Up to 42317 conditions per place. [2023-11-19 08:01:50,797 INFO L140 encePairwiseOnDemand]: 473/480 looper letters, 118 selfloop transitions, 11 changer transitions 1/152 dead transitions. [2023-11-19 08:01:50,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 152 transitions, 670 flow [2023-11-19 08:01:50,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:01:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1040 transitions. [2023-11-19 08:01:50,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-11-19 08:01:50,807 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1040 transitions. [2023-11-19 08:01:50,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1040 transitions. [2023-11-19 08:01:50,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:50,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1040 transitions. [2023-11-19 08:01:50,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:50,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:50,828 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:50,828 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 207 flow. Second operand 4 states and 1040 transitions. [2023-11-19 08:01:50,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 152 transitions, 670 flow [2023-11-19 08:01:50,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 152 transitions, 670 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:01:50,843 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 286 flow [2023-11-19 08:01:50,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2023-11-19 08:01:50,845 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2023-11-19 08:01:50,845 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 286 flow [2023-11-19 08:01:50,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.5) internal successors, (950), 4 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:50,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:50,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:50,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:01:50,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 08:01:50,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash -180386838, now seen corresponding path program 1 times [2023-11-19 08:01:50,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:50,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426832588] [2023-11-19 08:01:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:51,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426832588] [2023-11-19 08:01:51,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426832588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:51,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:51,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:51,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136645096] [2023-11-19 08:01:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:51,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:51,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:51,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:51,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 480 [2023-11-19 08:01:51,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 228.2) internal successors, (1141), 5 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:51,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:51,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 480 [2023-11-19 08:01:51,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:03,451 INFO L124 PetriNetUnfolderBase]: 75716/103070 cut-off events. [2023-11-19 08:02:03,451 INFO L125 PetriNetUnfolderBase]: For 43394/43402 co-relation queries the response was YES. [2023-11-19 08:02:03,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236088 conditions, 103070 events. 75716/103070 cut-off events. For 43394/43402 co-relation queries the response was YES. Maximal size of possible extension queue 3077. Compared 679780 event pairs, 44627 based on Foata normal form. 4/78016 useless extension candidates. Maximal degree in co-relation 93067. Up to 74804 conditions per place. [2023-11-19 08:02:04,348 INFO L140 encePairwiseOnDemand]: 474/480 looper letters, 126 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2023-11-19 08:02:04,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 153 transitions, 777 flow [2023-11-19 08:02:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:02:04,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1217 transitions. [2023-11-19 08:02:04,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070833333333333 [2023-11-19 08:02:04,355 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1217 transitions. [2023-11-19 08:02:04,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1217 transitions. [2023-11-19 08:02:04,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:04,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1217 transitions. [2023-11-19 08:02:04,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,371 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 286 flow. Second operand 5 states and 1217 transitions. [2023-11-19 08:02:04,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 153 transitions, 777 flow [2023-11-19 08:02:04,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 153 transitions, 773 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-19 08:02:04,488 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 332 flow [2023-11-19 08:02:04,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2023-11-19 08:02:04,490 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2023-11-19 08:02:04,490 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 332 flow [2023-11-19 08:02:04,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 228.2) internal successors, (1141), 5 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:04,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:04,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:02:04,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 08:02:04,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1839308678, now seen corresponding path program 1 times [2023-11-19 08:02:04,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:04,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575482125] [2023-11-19 08:02:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:04,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:04,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:04,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:04,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575482125] [2023-11-19 08:02:04,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575482125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:04,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:04,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:04,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231483300] [2023-11-19 08:02:04,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:04,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:04,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:04,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:04,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:04,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 480 [2023-11-19 08:02:04,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 228.2) internal successors, (1141), 5 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:04,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 480 [2023-11-19 08:02:04,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand