./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU --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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:13,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:13,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:09:13,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:13,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:13,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:13,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:13,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:13,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:13,461 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:13,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:13,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:13,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:13,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:13,464 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:13,465 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:13,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:09:13,466 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:13,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:13,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:13,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:13,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:09:13,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:13,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:09:13,471 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:13,472 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:13,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:13,473 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:13,473 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:13,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:13,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:13,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:13,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:13,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:13,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:13,476 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:09:13,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:13,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:13,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:13,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:13,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:13,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:13,479 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_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-10-31 22:09:13,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:13,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:13,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:13,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:13,799 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:13,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c Unable to find full path for "g++" [2024-10-31 22:09:15,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:16,190 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:16,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-31 22:09:16,200 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/data/858458548/ceb01d2c445a4625ae16ef18e0c323b4/FLAGb6f860f93 [2024-10-31 22:09:16,219 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/data/858458548/ceb01d2c445a4625ae16ef18e0c323b4 [2024-10-31 22:09:16,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:16,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:16,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:16,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:16,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:16,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad4607b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16, skipping insertion in model container [2024-10-31 22:09:16,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,263 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:16,504 WARN L251 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_a292a059-1db4-429a-8c16-5385693278b6/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4059,4072] [2024-10-31 22:09:16,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:16,531 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:16,560 WARN L251 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_a292a059-1db4-429a-8c16-5385693278b6/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4059,4072] [2024-10-31 22:09:16,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:16,588 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:16,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16 WrapperNode [2024-10-31 22:09:16,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:16,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:16,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:16,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:16,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,646 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 256 [2024-10-31 22:09:16,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:16,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:16,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:16,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:16,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,686 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-31 22:09:16,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:16,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:16,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:16,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:16,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (1/1) ... [2024-10-31 22:09:16,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:16,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:16,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:16,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:09:16,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:09:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:09:16,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:09:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:09:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:09:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-31 22:09:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-31 22:09:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:09:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:09:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:09:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:09:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:09:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:09:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:09:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:16,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:09:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:09:16,803 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:09:16,962 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:16,965 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:09:17,390 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:09:17,390 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:09:17,801 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:09:17,801 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-31 22:09:17,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:17 BoogieIcfgContainer [2024-10-31 22:09:17,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:09:17,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:09:17,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:09:17,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:09:17,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:16" (1/3) ... [2024-10-31 22:09:17,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c145118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:17, skipping insertion in model container [2024-10-31 22:09:17,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:16" (2/3) ... [2024-10-31 22:09:17,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c145118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:17, skipping insertion in model container [2024-10-31 22:09:17,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:17" (3/3) ... [2024-10-31 22:09:17,815 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-10-31 22:09:17,836 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:09:17,836 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:09:17,836 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:09:17,894 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-31 22:09:17,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 51 transitions, 130 flow [2024-10-31 22:09:17,964 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2024-10-31 22:09:17,964 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:09:17,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 47 events. 6/47 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-10-31 22:09:17,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 51 transitions, 130 flow [2024-10-31 22:09:17,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 46 transitions, 116 flow [2024-10-31 22:09:17,981 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:17,988 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d4abf43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:17,988 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-31 22:09:18,013 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:09:18,015 INFO L124 PetriNetUnfolderBase]: 6/45 cut-off events. [2024-10-31 22:09:18,015 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:09:18,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:18,016 INFO L204 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] [2024-10-31 22:09:18,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:09:18,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash -811056868, now seen corresponding path program 1 times [2024-10-31 22:09:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101593437] [2024-10-31 22:09:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101593437] [2024-10-31 22:09:18,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101593437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:18,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:18,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:09:18,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761689099] [2024-10-31 22:09:18,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:18,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:09:18,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:09:18,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:09:18,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-10-31 22:09:18,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:18,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:18,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-10-31 22:09:18,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:20,597 INFO L124 PetriNetUnfolderBase]: 6160/9047 cut-off events. [2024-10-31 22:09:20,597 INFO L125 PetriNetUnfolderBase]: For 530/530 co-relation queries the response was YES. [2024-10-31 22:09:20,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17724 conditions, 9047 events. 6160/9047 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55076 event pairs, 2221 based on Foata normal form. 2/8840 useless extension candidates. Maximal degree in co-relation 16284. Up to 3674 conditions per place. [2024-10-31 22:09:20,667 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 65 selfloop transitions, 4 changer transitions 3/85 dead transitions. [2024-10-31 22:09:20,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 365 flow [2024-10-31 22:09:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:09:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:09:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-10-31 22:09:20,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6235294117647059 [2024-10-31 22:09:20,683 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 116 flow. Second operand 5 states and 159 transitions. [2024-10-31 22:09:20,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 365 flow [2024-10-31 22:09:20,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 85 transitions, 331 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-31 22:09:20,719 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 124 flow [2024-10-31 22:09:20,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-10-31 22:09:20,727 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2024-10-31 22:09:20,727 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 124 flow [2024-10-31 22:09:20,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:20,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:20,728 INFO L204 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] [2024-10-31 22:09:20,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:09:20,731 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:09:20,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1082259351, now seen corresponding path program 1 times [2024-10-31 22:09:20,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:20,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010747832] [2024-10-31 22:09:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:20,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:20,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010747832] [2024-10-31 22:09:20,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010747832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:20,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:20,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:09:20,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772108503] [2024-10-31 22:09:20,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:20,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:09:20,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:20,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:09:20,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:20,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-10-31 22:09:20,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:20,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:20,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-10-31 22:09:20,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:21,662 INFO L124 PetriNetUnfolderBase]: 3414/5580 cut-off events. [2024-10-31 22:09:21,662 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-10-31 22:09:21,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10821 conditions, 5580 events. 3414/5580 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 36080 event pairs, 1305 based on Foata normal form. 90/5519 useless extension candidates. Maximal degree in co-relation 6911. Up to 3076 conditions per place. [2024-10-31 22:09:21,706 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 46 selfloop transitions, 2 changer transitions 3/68 dead transitions. [2024-10-31 22:09:21,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 272 flow [2024-10-31 22:09:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:09:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:09:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-10-31 22:09:21,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7124183006535948 [2024-10-31 22:09:21,711 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 124 flow. Second operand 3 states and 109 transitions. [2024-10-31 22:09:21,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 272 flow [2024-10-31 22:09:21,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:09:21,716 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 132 flow [2024-10-31 22:09:21,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-10-31 22:09:21,718 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2024-10-31 22:09:21,719 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 132 flow [2024-10-31 22:09:21,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:21,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:21,720 INFO L204 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] [2024-10-31 22:09:21,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:09:21,721 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:09:21,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:21,722 INFO L85 PathProgramCache]: Analyzing trace with hash -342713442, now seen corresponding path program 1 times [2024-10-31 22:09:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:21,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454167550] [2024-10-31 22:09:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:09:21,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:21,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454167550] [2024-10-31 22:09:21,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454167550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:21,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:21,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:09:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308484394] [2024-10-31 22:09:21,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:21,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:09:21,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:09:21,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:21,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-10-31 22:09:21,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:21,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:21,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-10-31 22:09:21,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:22,698 INFO L124 PetriNetUnfolderBase]: 3423/5576 cut-off events. [2024-10-31 22:09:22,698 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-10-31 22:09:22,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11291 conditions, 5576 events. 3423/5576 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 34201 event pairs, 1395 based on Foata normal form. 74/5462 useless extension candidates. Maximal degree in co-relation 7957. Up to 3744 conditions per place. [2024-10-31 22:09:22,732 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 42 selfloop transitions, 2 changer transitions 7/68 dead transitions. [2024-10-31 22:09:22,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 279 flow [2024-10-31 22:09:22,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:09:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:09:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-10-31 22:09:22,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2024-10-31 22:09:22,734 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 132 flow. Second operand 3 states and 108 transitions. [2024-10-31 22:09:22,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 279 flow [2024-10-31 22:09:22,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:09:22,737 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 142 flow [2024-10-31 22:09:22,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-10-31 22:09:22,738 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-10-31 22:09:22,739 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 142 flow [2024-10-31 22:09:22,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:22,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:22,739 INFO L204 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] [2024-10-31 22:09:22,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:09:22,740 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:09:22,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1374563807, now seen corresponding path program 1 times [2024-10-31 22:09:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:22,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103305460] [2024-10-31 22:09:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:22,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:09:22,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:22,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103305460] [2024-10-31 22:09:22,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103305460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:22,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:22,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:09:22,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120811810] [2024-10-31 22:09:22,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:22,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:22,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:22,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:22,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:22,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-10-31 22:09:22,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:22,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:22,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-10-31 22:09:22,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:23,830 INFO L124 PetriNetUnfolderBase]: 3940/6563 cut-off events. [2024-10-31 22:09:23,830 INFO L125 PetriNetUnfolderBase]: For 1135/1149 co-relation queries the response was YES. [2024-10-31 22:09:23,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13831 conditions, 6563 events. 3940/6563 cut-off events. For 1135/1149 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 42176 event pairs, 3357 based on Foata normal form. 58/6346 useless extension candidates. Maximal degree in co-relation 9911. Up to 4556 conditions per place. [2024-10-31 22:09:23,885 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 32 selfloop transitions, 2 changer transitions 25/76 dead transitions. [2024-10-31 22:09:23,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 324 flow [2024-10-31 22:09:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:09:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:09:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-10-31 22:09:23,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-31 22:09:23,888 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 142 flow. Second operand 5 states and 153 transitions. [2024-10-31 22:09:23,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 324 flow [2024-10-31 22:09:23,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:09:23,897 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 158 flow [2024-10-31 22:09:23,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-10-31 22:09:23,898 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-10-31 22:09:23,898 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 158 flow [2024-10-31 22:09:23,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:23,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:23,899 INFO L204 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] [2024-10-31 22:09:23,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:09:23,899 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:09:23,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:23,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1858947521, now seen corresponding path program 1 times [2024-10-31 22:09:23,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:23,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117747425] [2024-10-31 22:09:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:09:24,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:24,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117747425] [2024-10-31 22:09:24,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117747425] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:24,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:24,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:09:24,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254584563] [2024-10-31 22:09:24,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:24,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:24,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:24,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:24,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:24,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-10-31 22:09:24,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:24,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:24,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-10-31 22:09:24,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:25,337 INFO L124 PetriNetUnfolderBase]: 4848/8041 cut-off events. [2024-10-31 22:09:25,337 INFO L125 PetriNetUnfolderBase]: For 1636/1650 co-relation queries the response was YES. [2024-10-31 22:09:25,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16962 conditions, 8041 events. 4848/8041 cut-off events. For 1636/1650 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 54038 event pairs, 4151 based on Foata normal form. 86/7726 useless extension candidates. Maximal degree in co-relation 16943. Up to 4557 conditions per place. [2024-10-31 22:09:25,393 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 33 selfloop transitions, 2 changer transitions 25/77 dead transitions. [2024-10-31 22:09:25,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 77 transitions, 352 flow [2024-10-31 22:09:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:09:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:09:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-10-31 22:09:25,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6519607843137255 [2024-10-31 22:09:25,397 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 158 flow. Second operand 4 states and 133 transitions. [2024-10-31 22:09:25,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 77 transitions, 352 flow [2024-10-31 22:09:25,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 336 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-31 22:09:25,406 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 162 flow [2024-10-31 22:09:25,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-10-31 22:09:25,408 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-10-31 22:09:25,408 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 162 flow [2024-10-31 22:09:25,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:25,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:25,409 INFO L204 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] [2024-10-31 22:09:25,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:09:25,409 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:09:25,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:25,410 INFO L85 PathProgramCache]: Analyzing trace with hash 492940718, now seen corresponding path program 1 times [2024-10-31 22:09:25,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:25,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806274523] [2024-10-31 22:09:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:25,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:09:25,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806274523] [2024-10-31 22:09:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806274523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:25,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:25,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:09:25,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871627188] [2024-10-31 22:09:25,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:25,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:09:25,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:09:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:09:25,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-10-31 22:09:25,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:25,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:25,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-10-31 22:09:25,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:28,926 INFO L124 PetriNetUnfolderBase]: 17735/26583 cut-off events. [2024-10-31 22:09:28,926 INFO L125 PetriNetUnfolderBase]: For 5717/5717 co-relation queries the response was YES. [2024-10-31 22:09:29,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57910 conditions, 26583 events. 17735/26583 cut-off events. For 5717/5717 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 177302 event pairs, 1924 based on Foata normal form. 800/27215 useless extension candidates. Maximal degree in co-relation 57886. Up to 6730 conditions per place. [2024-10-31 22:09:29,102 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 113 selfloop transitions, 13 changer transitions 22/159 dead transitions. [2024-10-31 22:09:29,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 159 transitions, 763 flow [2024-10-31 22:09:29,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:09:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:09:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-10-31 22:09:29,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6638655462184874 [2024-10-31 22:09:29,104 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 162 flow. Second operand 7 states and 237 transitions. [2024-10-31 22:09:29,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 159 transitions, 763 flow [2024-10-31 22:09:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 159 transitions, 747 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-10-31 22:09:29,116 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 236 flow [2024-10-31 22:09:29,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-10-31 22:09:29,118 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-10-31 22:09:29,118 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 236 flow [2024-10-31 22:09:29,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:29,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:29,119 INFO L204 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] [2024-10-31 22:09:29,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:09:29,119 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:09:29,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash 674833818, now seen corresponding path program 2 times [2024-10-31 22:09:29,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:29,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635763018] [2024-10-31 22:09:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:29,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:09:29,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:29,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635763018] [2024-10-31 22:09:29,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635763018] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:29,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938813988] [2024-10-31 22:09:29,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:09:29,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:29,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:29,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:29,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:09:29,717 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:09:29,717 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:29,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:09:29,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:09:29,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:09:30,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938813988] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:30,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:30,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-31 22:09:30,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252143162] [2024-10-31 22:09:30,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:30,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:09:30,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:30,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:09:30,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:09:30,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-10-31 22:09:30,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 236 flow. Second operand has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:30,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:30,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-10-31 22:09:30,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:35,119 INFO L124 PetriNetUnfolderBase]: 25369/36568 cut-off events. [2024-10-31 22:09:35,119 INFO L125 PetriNetUnfolderBase]: For 20440/20440 co-relation queries the response was YES. [2024-10-31 22:09:35,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90698 conditions, 36568 events. 25369/36568 cut-off events. For 20440/20440 co-relation queries the response was YES. Maximal size of possible extension queue 1089. Compared 226161 event pairs, 1689 based on Foata normal form. 544/36250 useless extension candidates. Maximal degree in co-relation 90669. Up to 5468 conditions per place. [2024-10-31 22:09:35,471 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 377 selfloop transitions, 100 changer transitions 30/514 dead transitions. [2024-10-31 22:09:35,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 514 transitions, 2760 flow [2024-10-31 22:09:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-31 22:09:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-31 22:09:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 805 transitions. [2024-10-31 22:09:35,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5091714104996837 [2024-10-31 22:09:35,475 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 236 flow. Second operand 31 states and 805 transitions. [2024-10-31 22:09:35,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 514 transitions, 2760 flow [2024-10-31 22:09:35,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 514 transitions, 2741 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-31 22:09:35,603 INFO L231 Difference]: Finished difference. Result has 125 places, 154 transitions, 1135 flow [2024-10-31 22:09:35,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1135, PETRI_PLACES=125, PETRI_TRANSITIONS=154} [2024-10-31 22:09:35,603 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-10-31 22:09:35,604 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 154 transitions, 1135 flow [2024-10-31 22:09:35,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:35,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:35,604 INFO L204 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] [2024-10-31 22:09:35,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:35,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:09:35,809 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:09:35,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:35,809 INFO L85 PathProgramCache]: Analyzing trace with hash -450088264, now seen corresponding path program 3 times [2024-10-31 22:09:35,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:35,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769338387] [2024-10-31 22:09:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:35,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:09:36,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:36,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769338387] [2024-10-31 22:09:36,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769338387] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:36,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589463654] [2024-10-31 22:09:36,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:09:36,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:36,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:36,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:09:36,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-31 22:09:36,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:36,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:09:36,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:09:36,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:09:36,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589463654] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:36,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:36,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-31 22:09:36,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095645053] [2024-10-31 22:09:36,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:36,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:09:36,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:36,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:09:36,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:09:36,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-10-31 22:09:36,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 154 transitions, 1135 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:36,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:36,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-10-31 22:09:36,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:41,986 INFO L124 PetriNetUnfolderBase]: 19689/29138 cut-off events. [2024-10-31 22:09:41,987 INFO L125 PetriNetUnfolderBase]: For 228106/229350 co-relation queries the response was YES. [2024-10-31 22:09:42,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115394 conditions, 29138 events. 19689/29138 cut-off events. For 228106/229350 co-relation queries the response was YES. Maximal size of possible extension queue 1191. Compared 188666 event pairs, 1739 based on Foata normal form. 1324/29940 useless extension candidates. Maximal degree in co-relation 115336. Up to 5163 conditions per place. [2024-10-31 22:09:42,305 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 179 selfloop transitions, 80 changer transitions 35/323 dead transitions. [2024-10-31 22:09:42,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 323 transitions, 2731 flow [2024-10-31 22:09:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 22:09:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-31 22:09:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 419 transitions. [2024-10-31 22:09:42,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5134803921568627 [2024-10-31 22:09:42,308 INFO L175 Difference]: Start difference. First operand has 125 places, 154 transitions, 1135 flow. Second operand 16 states and 419 transitions. [2024-10-31 22:09:42,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 323 transitions, 2731 flow [2024-10-31 22:09:43,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 323 transitions, 2625 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-10-31 22:09:43,495 INFO L231 Difference]: Finished difference. Result has 140 places, 148 transitions, 1414 flow [2024-10-31 22:09:43,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1414, PETRI_PLACES=140, PETRI_TRANSITIONS=148} [2024-10-31 22:09:43,496 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2024-10-31 22:09:43,496 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 148 transitions, 1414 flow [2024-10-31 22:09:43,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:43,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:43,496 INFO L204 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] [2024-10-31 22:09:43,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:43,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a292a059-1db4-429a-8c16-5385693278b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:09:43,697 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:09:43,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:43,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1877270382, now seen corresponding path program 4 times [2024-10-31 22:09:43,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:43,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295458131] [2024-10-31 22:09:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:43,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat