./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 e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/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_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:57:39,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:57:39,365 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:57:39,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:57:39,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:57:39,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:57:39,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:57:39,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:57:39,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:57:39,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:57:39,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:57:39,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:57:39,401 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:57:39,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:57:39,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:57:39,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:57:39,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:57:39,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:57:39,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:57:39,405 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:57:39,405 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:57:39,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:57:39,406 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:57:39,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:57:39,407 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:57:39,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:57:39,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:57:39,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:57:39,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:57:39,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:57:39,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:57:39,411 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:57:39,411 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:57:39,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:57:39,412 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:57:39,413 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:57:39,413 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:57:39,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:57:39,414 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:57:39,414 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_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2023-11-06 21:57:39,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:57:39,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:57:39,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:57:39,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:57:39,681 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:57:39,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-11-06 21:57:42,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:57:43,403 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:57:43,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-11-06 21:57:43,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/data/41355553c/82e9d8b9210b47cfb23db4ce2dc4ce78/FLAG004110226 [2023-11-06 21:57:43,448 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/data/41355553c/82e9d8b9210b47cfb23db4ce2dc4ce78 [2023-11-06 21:57:43,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:57:43,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:57:43,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:57:43,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:57:43,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:57:43,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:43,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4903a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43, skipping insertion in model container [2023-11-06 21:57:43,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:43,527 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:57:43,781 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_ae378ee2-7030-4181-b037-3391c4c04cd9/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2023-11-06 21:57:43,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:57:43,804 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:57:43,837 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_ae378ee2-7030-4181-b037-3391c4c04cd9/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2023-11-06 21:57:43,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:57:43,851 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:57:43,852 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:57:43,860 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:57:43,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43 WrapperNode [2023-11-06 21:57:43,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:57:43,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:57:43,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:57:43,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:57:43,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:43,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:43,921 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 303 [2023-11-06 21:57:43,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:57:43,929 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:57:43,929 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:57:43,929 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:57:43,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:43,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:43,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:43,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:43,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:44,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:44,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:44,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:44,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:57:44,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:57:44,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:57:44,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:57:44,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (1/1) ... [2023-11-06 21:57:44,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:57:44,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:44,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:57:44,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:57:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:57:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:57:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:57:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:57:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:57:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:57:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:57:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:57:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:57:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:57:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 21:57:44,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 21:57:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:57:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-06 21:57:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-06 21:57:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-06 21:57:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-06 21:57:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:57:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:57:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:57:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:57:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:57:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:57:44,143 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:57:44,310 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:57:44,313 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:57:45,010 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:57:45,314 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:57:45,315 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 21:57:45,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:45 BoogieIcfgContainer [2023-11-06 21:57:45,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:57:45,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:57:45,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:57:45,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:57:45,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:43" (1/3) ... [2023-11-06 21:57:45,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f56a586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:45, skipping insertion in model container [2023-11-06 21:57:45,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:43" (2/3) ... [2023-11-06 21:57:45,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f56a586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:45, skipping insertion in model container [2023-11-06 21:57:45,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:45" (3/3) ... [2023-11-06 21:57:45,328 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2023-11-06 21:57:45,339 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:57:45,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:57:45,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:57:45,352 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:57:45,546 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-06 21:57:45,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 271 transitions, 608 flow [2023-11-06 21:57:45,817 INFO L124 PetriNetUnfolderBase]: 18/243 cut-off events. [2023-11-06 21:57:45,817 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:57:45,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 243 events. 18/243 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 308 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 210. Up to 3 conditions per place. [2023-11-06 21:57:45,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 271 transitions, 608 flow [2023-11-06 21:57:45,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 234 transitions, 516 flow [2023-11-06 21:57:45,848 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:57:45,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 234 transitions, 516 flow [2023-11-06 21:57:45,899 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 234 transitions, 516 flow [2023-11-06 21:57:45,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 234 transitions, 516 flow [2023-11-06 21:57:46,010 INFO L124 PetriNetUnfolderBase]: 18/234 cut-off events. [2023-11-06 21:57:46,010 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:57:46,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 234 events. 18/234 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 305 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 210. Up to 3 conditions per place. [2023-11-06 21:57:46,025 INFO L119 LiptonReduction]: Number of co-enabled transitions 7920 [2023-11-06 21:57:54,388 INFO L134 LiptonReduction]: Checked pairs total: 33127 [2023-11-06 21:57:54,388 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-11-06 21:57:54,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:57:54,414 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=LoopsAndPotentialCycles, 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;@2a5c680e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:57:54,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-06 21:57:54,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:57:54,437 INFO L124 PetriNetUnfolderBase]: 9/64 cut-off events. [2023-11-06 21:57:54,437 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:57:54,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:54,438 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] [2023-11-06 21:57:54,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-06 21:57:54,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -521059327, now seen corresponding path program 1 times [2023-11-06 21:57:54,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:54,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731248565] [2023-11-06 21:57:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:54,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:55,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:55,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731248565] [2023-11-06 21:57:55,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731248565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:55,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:55,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:55,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456053504] [2023-11-06 21:57:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:55,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:55,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:55,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:55,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:55,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 470 [2023-11-06 21:57:55,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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) [2023-11-06 21:57:55,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:55,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 470 [2023-11-06 21:57:55,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:00,687 INFO L124 PetriNetUnfolderBase]: 24447/32519 cut-off events. [2023-11-06 21:58:00,687 INFO L125 PetriNetUnfolderBase]: For 5496/5511 co-relation queries the response was YES. [2023-11-06 21:58:00,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69295 conditions, 32519 events. 24447/32519 cut-off events. For 5496/5511 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 166496 event pairs, 7197 based on Foata normal form. 4/24793 useless extension candidates. Maximal degree in co-relation 67831. Up to 12303 conditions per place. [2023-11-06 21:58:00,965 INFO L140 encePairwiseOnDemand]: 463/470 looper letters, 109 selfloop transitions, 8 changer transitions 1/138 dead transitions. [2023-11-06 21:58:00,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 138 transitions, 641 flow [2023-11-06 21:58:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:58:00,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:58:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1011 transitions. [2023-11-06 21:58:00,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377659574468086 [2023-11-06 21:58:00,994 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1011 transitions. [2023-11-06 21:58:00,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1011 transitions. [2023-11-06 21:58:00,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:01,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1011 transitions. [2023-11-06 21:58:01,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 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) [2023-11-06 21:58:01,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 470.0) internal successors, (2350), 5 states have internal predecessors, (2350), 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) [2023-11-06 21:58:01,024 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 470.0) internal successors, (2350), 5 states have internal predecessors, (2350), 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) [2023-11-06 21:58:01,026 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 178 flow. Second operand 4 states and 1011 transitions. [2023-11-06 21:58:01,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 138 transitions, 641 flow [2023-11-06 21:58:01,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 138 transitions, 555 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-06 21:58:01,216 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 199 flow [2023-11-06 21:58:01,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2023-11-06 21:58:01,223 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2023-11-06 21:58:01,225 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 199 flow [2023-11-06 21:58:01,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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) [2023-11-06 21:58:01,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:01,226 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] [2023-11-06 21:58:01,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:58:01,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-06 21:58:01,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:01,242 INFO L85 PathProgramCache]: Analyzing trace with hash 521579247, now seen corresponding path program 2 times [2023-11-06 21:58:01,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:01,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250730324] [2023-11-06 21:58:01,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:01,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:01,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:01,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250730324] [2023-11-06 21:58:01,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250730324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:01,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:01,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:01,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118859560] [2023-11-06 21:58:01,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:01,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:58:01,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:58:01,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:58:01,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 470 [2023-11-06 21:58:01,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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) [2023-11-06 21:58:01,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:01,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 470 [2023-11-06 21:58:01,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:06,973 INFO L124 PetriNetUnfolderBase]: 40211/54023 cut-off events. [2023-11-06 21:58:06,973 INFO L125 PetriNetUnfolderBase]: For 11608/11608 co-relation queries the response was YES. [2023-11-06 21:58:07,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120277 conditions, 54023 events. 40211/54023 cut-off events. For 11608/11608 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 299743 event pairs, 15979 based on Foata normal form. 1/41315 useless extension candidates. Maximal degree in co-relation 42951. Up to 22845 conditions per place. [2023-11-06 21:58:07,265 INFO L140 encePairwiseOnDemand]: 463/470 looper letters, 115 selfloop transitions, 11 changer transitions 1/147 dead transitions. [2023-11-06 21:58:07,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 147 transitions, 654 flow [2023-11-06 21:58:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:58:07,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:58:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1013 transitions. [2023-11-06 21:58:07,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388297872340425 [2023-11-06 21:58:07,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1013 transitions. [2023-11-06 21:58:07,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1013 transitions. [2023-11-06 21:58:07,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:07,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1013 transitions. [2023-11-06 21:58:07,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 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) [2023-11-06 21:58:07,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 470.0) internal successors, (2350), 5 states have internal predecessors, (2350), 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) [2023-11-06 21:58:07,296 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 470.0) internal successors, (2350), 5 states have internal predecessors, (2350), 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) [2023-11-06 21:58:07,296 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 199 flow. Second operand 4 states and 1013 transitions. [2023-11-06 21:58:07,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 147 transitions, 654 flow [2023-11-06 21:58:07,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 147 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:58:07,316 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 278 flow [2023-11-06 21:58:07,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2023-11-06 21:58:07,317 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2023-11-06 21:58:07,317 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 278 flow [2023-11-06 21:58:07,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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) [2023-11-06 21:58:07,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:07,319 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] [2023-11-06 21:58:07,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:58:07,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-06 21:58:07,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash -246678183, now seen corresponding path program 1 times [2023-11-06 21:58:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:07,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966106812] [2023-11-06 21:58:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966106812] [2023-11-06 21:58:07,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966106812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:07,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:07,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:58:07,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925460012] [2023-11-06 21:58:07,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:07,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:58:07,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:07,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:58:07,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:58:07,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 470 [2023-11-06 21:58:07,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 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) [2023-11-06 21:58:07,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:07,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 470 [2023-11-06 21:58:07,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:14,445 INFO L124 PetriNetUnfolderBase]: 52244/70542 cut-off events. [2023-11-06 21:58:14,445 INFO L125 PetriNetUnfolderBase]: For 33757/33757 co-relation queries the response was YES. [2023-11-06 21:58:14,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168825 conditions, 70542 events. 52244/70542 cut-off events. For 33757/33757 co-relation queries the response was YES. Maximal size of possible extension queue 1861. Compared 411549 event pairs, 34723 based on Foata normal form. 0/54607 useless extension candidates. Maximal degree in co-relation 71023. Up to 50266 conditions per place. [2023-11-06 21:58:14,747 INFO L140 encePairwiseOnDemand]: 464/470 looper letters, 121 selfloop transitions, 5 changer transitions 0/146 dead transitions. [2023-11-06 21:58:14,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 146 transitions, 753 flow [2023-11-06 21:58:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:58:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:58:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1182 transitions. [2023-11-06 21:58:14,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029787234042553 [2023-11-06 21:58:14,757 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1182 transitions. [2023-11-06 21:58:14,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1182 transitions. [2023-11-06 21:58:14,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:14,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1182 transitions. [2023-11-06 21:58:14,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.4) internal successors, (1182), 5 states have internal predecessors, (1182), 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) [2023-11-06 21:58:14,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 470.0) internal successors, (2820), 6 states have internal predecessors, (2820), 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) [2023-11-06 21:58:14,771 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 470.0) internal successors, (2820), 6 states have internal predecessors, (2820), 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) [2023-11-06 21:58:14,771 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 278 flow. Second operand 5 states and 1182 transitions. [2023-11-06 21:58:14,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 146 transitions, 753 flow [2023-11-06 21:58:14,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 146 transitions, 749 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 21:58:14,815 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 324 flow [2023-11-06 21:58:14,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2023-11-06 21:58:14,817 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-11-06 21:58:14,817 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 324 flow [2023-11-06 21:58:14,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 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) [2023-11-06 21:58:14,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:14,819 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] [2023-11-06 21:58:14,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:58:14,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-06 21:58:14,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1890152128, now seen corresponding path program 1 times [2023-11-06 21:58:14,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:14,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802792837] [2023-11-06 21:58:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:14,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:15,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:15,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802792837] [2023-11-06 21:58:15,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802792837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:15,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:15,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:58:15,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459779287] [2023-11-06 21:58:15,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:15,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:58:15,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:15,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:58:15,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:58:15,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 470 [2023-11-06 21:58:15,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 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) [2023-11-06 21:58:15,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:15,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 470 [2023-11-06 21:58:15,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:21,312 INFO L124 PetriNetUnfolderBase]: 43919/59468 cut-off events. [2023-11-06 21:58:21,312 INFO L125 PetriNetUnfolderBase]: For 32910/32910 co-relation queries the response was YES. [2023-11-06 21:58:21,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146363 conditions, 59468 events. 43919/59468 cut-off events. For 32910/32910 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 340187 event pairs, 30832 based on Foata normal form. 0/50910 useless extension candidates. Maximal degree in co-relation 134375. Up to 50266 conditions per place. [2023-11-06 21:58:21,612 INFO L140 encePairwiseOnDemand]: 464/470 looper letters, 58 selfloop transitions, 2 changer transitions 51/131 dead transitions. [2023-11-06 21:58:21,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 677 flow [2023-11-06 21:58:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:58:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:58:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1173 transitions. [2023-11-06 21:58:21,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4991489361702128 [2023-11-06 21:58:21,618 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1173 transitions. [2023-11-06 21:58:21,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1173 transitions. [2023-11-06 21:58:21,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:21,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1173 transitions. [2023-11-06 21:58:21,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 234.6) internal successors, (1173), 5 states have internal predecessors, (1173), 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) [2023-11-06 21:58:21,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 470.0) internal successors, (2820), 6 states have internal predecessors, (2820), 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) [2023-11-06 21:58:21,632 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 470.0) internal successors, (2820), 6 states have internal predecessors, (2820), 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) [2023-11-06 21:58:21,633 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 324 flow. Second operand 5 states and 1173 transitions. [2023-11-06 21:58:21,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 677 flow [2023-11-06 21:58:21,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 131 transitions, 673 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:21,672 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 302 flow [2023-11-06 21:58:21,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2023-11-06 21:58:21,673 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2023-11-06 21:58:21,674 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 302 flow [2023-11-06 21:58:21,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 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) [2023-11-06 21:58:21,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:21,675 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] [2023-11-06 21:58:21,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:58:21,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-06 21:58:21,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:21,677 INFO L85 PathProgramCache]: Analyzing trace with hash 697163092, now seen corresponding path program 1 times [2023-11-06 21:58:21,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:21,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727479205] [2023-11-06 21:58:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:21,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:21,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:21,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727479205] [2023-11-06 21:58:21,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727479205] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:21,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474257563] [2023-11-06 21:58:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:21,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:21,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:21,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:21,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:58:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:22,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:58:22,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:22,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:22,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474257563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:22,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:22,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 21:58:22,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432955292] [2023-11-06 21:58:22,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:22,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:58:22,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:22,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:58:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:58:22,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 470 [2023-11-06 21:58:22,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 302 flow. Second operand has 12 states, 12 states have (on average 219.75) internal successors, (2637), 12 states have internal predecessors, (2637), 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) [2023-11-06 21:58:22,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:22,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 470 [2023-11-06 21:58:22,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:30,265 INFO L124 PetriNetUnfolderBase]: 50674/69333 cut-off events. [2023-11-06 21:58:30,265 INFO L125 PetriNetUnfolderBase]: For 47388/47388 co-relation queries the response was YES. [2023-11-06 21:58:30,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175260 conditions, 69333 events. 50674/69333 cut-off events. For 47388/47388 co-relation queries the response was YES. Maximal size of possible extension queue 1842. Compared 423929 event pairs, 15551 based on Foata normal form. 3638/68688 useless extension candidates. Maximal degree in co-relation 175239. Up to 28288 conditions per place. [2023-11-06 21:58:30,689 INFO L140 encePairwiseOnDemand]: 462/470 looper letters, 159 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2023-11-06 21:58:30,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 187 transitions, 1059 flow [2023-11-06 21:58:30,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:30,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1642 transitions. [2023-11-06 21:58:30,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990881458966565 [2023-11-06 21:58:30,696 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1642 transitions. [2023-11-06 21:58:30,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1642 transitions. [2023-11-06 21:58:30,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:30,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1642 transitions. [2023-11-06 21:58:30,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.57142857142858) internal successors, (1642), 7 states have internal predecessors, (1642), 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) [2023-11-06 21:58:30,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 470.0) internal successors, (3760), 8 states have internal predecessors, (3760), 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) [2023-11-06 21:58:30,711 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 470.0) internal successors, (3760), 8 states have internal predecessors, (3760), 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) [2023-11-06 21:58:30,711 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 302 flow. Second operand 7 states and 1642 transitions. [2023-11-06 21:58:30,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 187 transitions, 1059 flow [2023-11-06 21:58:30,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 187 transitions, 1035 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-06 21:58:30,740 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 368 flow [2023-11-06 21:58:30,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2023-11-06 21:58:30,741 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2023-11-06 21:58:30,741 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 368 flow [2023-11-06 21:58:30,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 219.75) internal successors, (2637), 12 states have internal predecessors, (2637), 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) [2023-11-06 21:58:30,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:30,743 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] [2023-11-06 21:58:30,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:30,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:30,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-06 21:58:30,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:30,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1990630673, now seen corresponding path program 1 times [2023-11-06 21:58:30,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:30,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482443255] [2023-11-06 21:58:30,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:30,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:31,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:31,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482443255] [2023-11-06 21:58:31,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482443255] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:31,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508484888] [2023-11-06 21:58:31,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:31,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:31,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:31,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:31,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae378ee2-7030-4181-b037-3391c4c04cd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:58:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:31,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:58:31,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:31,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:31,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508484888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:31,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:31,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 21:58:31,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732924558] [2023-11-06 21:58:31,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:31,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:58:31,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:58:31,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:58:32,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 470 [2023-11-06 21:58:32,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 368 flow. Second operand has 12 states, 12 states have (on average 219.41666666666666) internal successors, (2633), 12 states have internal predecessors, (2633), 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) [2023-11-06 21:58:32,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:32,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 470 [2023-11-06 21:58:32,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand