./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.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_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/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_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/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_7e617c90-99a3-43be-a4c6-2b20d574b0c8/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 eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:05:38,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:05:38,964 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:05:38,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:05:38,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:05:39,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:05:39,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:05:39,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:05:39,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:05:39,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:05:39,032 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:05:39,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:05:39,033 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:05:39,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:05:39,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:05:39,035 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:05:39,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:05:39,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:05:39,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:05:39,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:05:39,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:05:39,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:05:39,040 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:05:39,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:05:39,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:05:39,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:05:39,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:05:39,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:05:39,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:05:39,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:05:39,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:05:39,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:05:39,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:05:39,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:05:39,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:05:39,047 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:05:39,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:05:39,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:05:39,048 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:05:39,048 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_7e617c90-99a3-43be-a4c6-2b20d574b0c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc [2023-11-06 22:05:39,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:05:39,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:05:39,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:05:39,515 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:05:39,516 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:05:39,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-06 22:05:42,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:05:43,214 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:05:43,216 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-06 22:05:43,230 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/data/7e06f75d9/caa174e2d9494a08b297a6f16994821c/FLAG6f2a1d8ce [2023-11-06 22:05:43,251 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/data/7e06f75d9/caa174e2d9494a08b297a6f16994821c [2023-11-06 22:05:43,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:05:43,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:05:43,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:05:43,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:05:43,272 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:05:43,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec8dee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43, skipping insertion in model container [2023-11-06 22:05:43,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,315 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:05:43,580 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_7e617c90-99a3-43be-a4c6-2b20d574b0c8/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2023-11-06 22:05:43,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:05:43,605 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:05:43,652 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_7e617c90-99a3-43be-a4c6-2b20d574b0c8/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2023-11-06 22:05:43,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:05:43,677 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:05:43,677 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:05:43,687 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:05:43,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43 WrapperNode [2023-11-06 22:05:43,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:05:43,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:05:43,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:05:43,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:05:43,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,747 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 125 [2023-11-06 22:05:43,748 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:05:43,749 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:05:43,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:05:43,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:05:43,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:05:43,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:05:43,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:05:43,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:05:43,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (1/1) ... [2023-11-06 22:05:43,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:05:43,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:43,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:05:43,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:05:43,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:05:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:05:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:05:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:05:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:05:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:05:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:05:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:05:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:05:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:05:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:05:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:05:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:05:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:05:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:05:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:05:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:05:43,917 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 22:05:44,111 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:05:44,114 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:05:44,614 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:05:44,654 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:05:44,654 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 22:05:44,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:05:44 BoogieIcfgContainer [2023-11-06 22:05:44,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:05:44,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:05:44,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:05:44,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:05:44,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:05:43" (1/3) ... [2023-11-06 22:05:44,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bcc8d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:05:44, skipping insertion in model container [2023-11-06 22:05:44,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:43" (2/3) ... [2023-11-06 22:05:44,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bcc8d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:05:44, skipping insertion in model container [2023-11-06 22:05:44,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:05:44" (3/3) ... [2023-11-06 22:05:44,670 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-11-06 22:05:44,689 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:05:44,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:05:44,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:05:44,703 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:05:44,832 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:05:44,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 190 transitions, 401 flow [2023-11-06 22:05:45,001 INFO L124 PetriNetUnfolderBase]: 16/187 cut-off events. [2023-11-06 22:05:45,002 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:05:45,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 187 events. 16/187 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2023-11-06 22:05:45,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 190 transitions, 401 flow [2023-11-06 22:05:45,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 176 transitions, 370 flow [2023-11-06 22:05:45,024 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:05:45,037 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 176 transitions, 370 flow [2023-11-06 22:05:45,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 176 transitions, 370 flow [2023-11-06 22:05:45,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 176 transitions, 370 flow [2023-11-06 22:05:45,105 INFO L124 PetriNetUnfolderBase]: 16/176 cut-off events. [2023-11-06 22:05:45,105 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:05:45,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 176 events. 16/176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2023-11-06 22:05:45,111 INFO L119 LiptonReduction]: Number of co-enabled transitions 1942 [2023-11-06 22:05:53,440 INFO L134 LiptonReduction]: Checked pairs total: 2624 [2023-11-06 22:05:53,442 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-11-06 22:05:53,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:05:53,492 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;@5ecc8982, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:05:53,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:05:53,519 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:05:53,532 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2023-11-06 22:05:53,532 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:05:53,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:53,534 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] [2023-11-06 22:05:53,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:05:53,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1600959493, now seen corresponding path program 1 times [2023-11-06 22:05:53,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:53,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844422501] [2023-11-06 22:05:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:53,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:54,994 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 22:05:54,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844422501] [2023-11-06 22:05:54,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844422501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:54,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:54,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:05:55,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562891842] [2023-11-06 22:05:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:05:55,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:55,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:05:55,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:55,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 369 [2023-11-06 22:05:55,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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 22:05:55,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:55,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 369 [2023-11-06 22:05:55,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:55,744 INFO L124 PetriNetUnfolderBase]: 854/1155 cut-off events. [2023-11-06 22:05:55,745 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-06 22:05:55,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 1155 events. 854/1155 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4187 event pairs, 310 based on Foata normal form. 1/692 useless extension candidates. Maximal degree in co-relation 1073. Up to 740 conditions per place. [2023-11-06 22:05:55,762 INFO L140 encePairwiseOnDemand]: 361/369 looper letters, 44 selfloop transitions, 7 changer transitions 1/55 dead transitions. [2023-11-06 22:05:55,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 55 transitions, 250 flow [2023-11-06 22:05:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:05:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2023-11-06 22:05:55,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443360433604336 [2023-11-06 22:05:55,791 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2023-11-06 22:05:55,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2023-11-06 22:05:55,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:55,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2023-11-06 22:05:55,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 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 22:05:55,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 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 22:05:55,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 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 22:05:55,826 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 5 states and 818 transitions. [2023-11-06 22:05:55,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 55 transitions, 250 flow [2023-11-06 22:05:55,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 55 transitions, 226 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:05:55,838 INFO L231 Difference]: Finished difference. Result has 34 places, 35 transitions, 114 flow [2023-11-06 22:05:55,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2023-11-06 22:05:55,845 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-11-06 22:05:55,845 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 114 flow [2023-11-06 22:05:55,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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 22:05:55,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:55,847 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] [2023-11-06 22:05:55,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:05:55,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:05:55,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:55,849 INFO L85 PathProgramCache]: Analyzing trace with hash -513885920, now seen corresponding path program 1 times [2023-11-06 22:05:55,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:55,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722857645] [2023-11-06 22:05:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:56,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:56,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722857645] [2023-11-06 22:05:56,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722857645] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:56,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870478152] [2023-11-06 22:05:56,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:56,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:56,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:56,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:56,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:05:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:56,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:05:56,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:56,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:56,440 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 22:05:56,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870478152] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:56,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:56,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-06 22:05:56,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648510966] [2023-11-06 22:05:56,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:56,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:05:56,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:56,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:05:56,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:05:56,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 369 [2023-11-06 22:05:56,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 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 22:05:56,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:56,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 369 [2023-11-06 22:05:56,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:57,107 INFO L124 PetriNetUnfolderBase]: 1543/2122 cut-off events. [2023-11-06 22:05:57,108 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2023-11-06 22:05:57,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 2122 events. 1543/2122 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9093 event pairs, 756 based on Foata normal form. 0/1466 useless extension candidates. Maximal degree in co-relation 4471. Up to 1045 conditions per place. [2023-11-06 22:05:57,139 INFO L140 encePairwiseOnDemand]: 364/369 looper letters, 50 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-11-06 22:05:57,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 59 transitions, 294 flow [2023-11-06 22:05:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:05:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2023-11-06 22:05:57,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443360433604336 [2023-11-06 22:05:57,152 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2023-11-06 22:05:57,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2023-11-06 22:05:57,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:57,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2023-11-06 22:05:57,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 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 22:05:57,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 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 22:05:57,166 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 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 22:05:57,166 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 114 flow. Second operand 5 states and 818 transitions. [2023-11-06 22:05:57,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 59 transitions, 294 flow [2023-11-06 22:05:57,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 284 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:05:57,172 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 128 flow [2023-11-06 22:05:57,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-11-06 22:05:57,174 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-11-06 22:05:57,174 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 128 flow [2023-11-06 22:05:57,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 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 22:05:57,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:57,176 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] [2023-11-06 22:05:57,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:57,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:57,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:05:57,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:57,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1921103440, now seen corresponding path program 1 times [2023-11-06 22:05:57,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:57,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393980308] [2023-11-06 22:05:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:57,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:57,587 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 22:05:57,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:57,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393980308] [2023-11-06 22:05:57,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393980308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:57,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:57,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:57,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365833811] [2023-11-06 22:05:57,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:57,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:05:57,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:57,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:05:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:57,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 369 [2023-11-06 22:05:57,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 22:05:57,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:57,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 369 [2023-11-06 22:05:57,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:58,365 INFO L124 PetriNetUnfolderBase]: 1858/2577 cut-off events. [2023-11-06 22:05:58,366 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-06 22:05:58,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5416 conditions, 2577 events. 1858/2577 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 11489 event pairs, 798 based on Foata normal form. 132/1891 useless extension candidates. Maximal degree in co-relation 4059. Up to 1396 conditions per place. [2023-11-06 22:05:58,393 INFO L140 encePairwiseOnDemand]: 361/369 looper letters, 60 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2023-11-06 22:05:58,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 71 transitions, 358 flow [2023-11-06 22:05:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:05:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:05:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 986 transitions. [2023-11-06 22:05:58,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44534778681120146 [2023-11-06 22:05:58,399 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 986 transitions. [2023-11-06 22:05:58,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 986 transitions. [2023-11-06 22:05:58,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:58,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 986 transitions. [2023-11-06 22:05:58,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 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 22:05:58,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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 22:05:58,416 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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 22:05:58,417 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 128 flow. Second operand 6 states and 986 transitions. [2023-11-06 22:05:58,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 71 transitions, 358 flow [2023-11-06 22:05:58,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 71 transitions, 348 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:05:58,426 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 148 flow [2023-11-06 22:05:58,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-11-06 22:05:58,428 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-11-06 22:05:58,429 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 148 flow [2023-11-06 22:05:58,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 22:05:58,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:58,430 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] [2023-11-06 22:05:58,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:05:58,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:05:58,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1409442835, now seen corresponding path program 1 times [2023-11-06 22:05:58,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:58,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095577340] [2023-11-06 22:05:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:58,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:58,619 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 22:05:58,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:58,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095577340] [2023-11-06 22:05:58,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095577340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:58,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:58,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:58,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836019066] [2023-11-06 22:05:58,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:58,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:05:58,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:05:58,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:58,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 369 [2023-11-06 22:05:58,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 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 22:05:58,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:58,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 369 [2023-11-06 22:05:58,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:59,186 INFO L124 PetriNetUnfolderBase]: 812/1189 cut-off events. [2023-11-06 22:05:59,187 INFO L125 PetriNetUnfolderBase]: For 545/607 co-relation queries the response was YES. [2023-11-06 22:05:59,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2861 conditions, 1189 events. 812/1189 cut-off events. For 545/607 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5244 event pairs, 324 based on Foata normal form. 62/1015 useless extension candidates. Maximal degree in co-relation 1589. Up to 644 conditions per place. [2023-11-06 22:05:59,200 INFO L140 encePairwiseOnDemand]: 361/369 looper letters, 25 selfloop transitions, 4 changer transitions 32/63 dead transitions. [2023-11-06 22:05:59,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 338 flow [2023-11-06 22:05:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:05:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:05:59,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 986 transitions. [2023-11-06 22:05:59,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44534778681120146 [2023-11-06 22:05:59,207 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 986 transitions. [2023-11-06 22:05:59,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 986 transitions. [2023-11-06 22:05:59,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:59,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 986 transitions. [2023-11-06 22:05:59,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 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 22:05:59,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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 22:05:59,225 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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 22:05:59,226 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 148 flow. Second operand 6 states and 986 transitions. [2023-11-06 22:05:59,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 338 flow [2023-11-06 22:05:59,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:05:59,235 INFO L231 Difference]: Finished difference. Result has 48 places, 31 transitions, 117 flow [2023-11-06 22:05:59,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2023-11-06 22:05:59,242 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-11-06 22:05:59,243 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 117 flow [2023-11-06 22:05:59,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 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 22:05:59,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:59,245 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] [2023-11-06 22:05:59,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:05:59,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:05:59,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1184127198, now seen corresponding path program 1 times [2023-11-06 22:05:59,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:59,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655643507] [2023-11-06 22:05:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:59,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:05:59,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:59,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655643507] [2023-11-06 22:05:59,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655643507] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:59,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147249536] [2023-11-06 22:05:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:59,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:59,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:59,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:59,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:05:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:59,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:05:59,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:05:59,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:05:59,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147249536] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:59,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:59,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-06 22:05:59,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540173087] [2023-11-06 22:05:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:59,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:05:59,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:59,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:05:59,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:05:59,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 369 [2023-11-06 22:05:59,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 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 22:05:59,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:59,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 369 [2023-11-06 22:05:59,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:00,061 INFO L124 PetriNetUnfolderBase]: 589/804 cut-off events. [2023-11-06 22:06:00,061 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2023-11-06 22:06:00,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 804 events. 589/804 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2769 event pairs, 225 based on Foata normal form. 42/677 useless extension candidates. Maximal degree in co-relation 2055. Up to 622 conditions per place. [2023-11-06 22:06:00,072 INFO L140 encePairwiseOnDemand]: 364/369 looper letters, 38 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2023-11-06 22:06:00,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 239 flow [2023-11-06 22:06:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:06:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:06:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2023-11-06 22:06:00,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42384823848238484 [2023-11-06 22:06:00,078 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2023-11-06 22:06:00,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2023-11-06 22:06:00,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:00,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2023-11-06 22:06:00,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 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 22:06:00,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 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 22:06:00,116 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 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 22:06:00,116 INFO L175 Difference]: Start difference. First operand has 48 places, 31 transitions, 117 flow. Second operand 5 states and 782 transitions. [2023-11-06 22:06:00,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 239 flow [2023-11-06 22:06:00,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 203 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-11-06 22:06:00,122 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 105 flow [2023-11-06 22:06:00,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-11-06 22:06:00,126 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-11-06 22:06:00,131 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 105 flow [2023-11-06 22:06:00,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 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 22:06:00,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:00,132 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] [2023-11-06 22:06:00,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:00,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:00,339 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:00,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash 832961013, now seen corresponding path program 1 times [2023-11-06 22:06:00,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:00,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97936834] [2023-11-06 22:06:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:00,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:06:00,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:00,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97936834] [2023-11-06 22:06:00,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97936834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:00,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950345002] [2023-11-06 22:06:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:00,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:00,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:00,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:00,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:06:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:00,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:06:00,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:06:00,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:06:00,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950345002] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:00,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:06:00,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-06 22:06:00,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474425667] [2023-11-06 22:06:00,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:00,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:06:00,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:00,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:06:00,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:06:01,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 369 [2023-11-06 22:06:01,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 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 22:06:01,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:01,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 369 [2023-11-06 22:06:01,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:01,216 INFO L124 PetriNetUnfolderBase]: 550/762 cut-off events. [2023-11-06 22:06:01,216 INFO L125 PetriNetUnfolderBase]: For 432/530 co-relation queries the response was YES. [2023-11-06 22:06:01,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 762 events. 550/762 cut-off events. For 432/530 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2533 event pairs, 140 based on Foata normal form. 98/668 useless extension candidates. Maximal degree in co-relation 1874. Up to 422 conditions per place. [2023-11-06 22:06:01,224 INFO L140 encePairwiseOnDemand]: 363/369 looper letters, 38 selfloop transitions, 5 changer transitions 0/45 dead transitions. [2023-11-06 22:06:01,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 232 flow [2023-11-06 22:06:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:06:01,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:06:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 781 transitions. [2023-11-06 22:06:01,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4233062330623306 [2023-11-06 22:06:01,230 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 781 transitions. [2023-11-06 22:06:01,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 781 transitions. [2023-11-06 22:06:01,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:01,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 781 transitions. [2023-11-06 22:06:01,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.2) internal successors, (781), 5 states have internal predecessors, (781), 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 22:06:01,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 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 22:06:01,241 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 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 22:06:01,242 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 105 flow. Second operand 5 states and 781 transitions. [2023-11-06 22:06:01,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 232 flow [2023-11-06 22:06:01,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 221 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:06:01,245 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 120 flow [2023-11-06 22:06:01,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-11-06 22:06:01,246 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-11-06 22:06:01,247 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 120 flow [2023-11-06 22:06:01,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 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 22:06:01,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:01,248 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] [2023-11-06 22:06:01,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:01,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:06:01,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:01,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash 905142120, now seen corresponding path program 1 times [2023-11-06 22:06:01,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868034172] [2023-11-06 22:06:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:01,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:01,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868034172] [2023-11-06 22:06:01,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868034172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:01,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322752898] [2023-11-06 22:06:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:01,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:01,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:01,624 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:01,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:06:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:01,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:06:01,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:01,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:01,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322752898] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:01,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:06:01,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-06 22:06:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642483036] [2023-11-06 22:06:01,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:01,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:06:01,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:06:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:06:02,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 369 [2023-11-06 22:06:02,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 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 22:06:02,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:02,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 369 [2023-11-06 22:06:02,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:02,304 INFO L124 PetriNetUnfolderBase]: 515/725 cut-off events. [2023-11-06 22:06:02,304 INFO L125 PetriNetUnfolderBase]: For 634/814 co-relation queries the response was YES. [2023-11-06 22:06:02,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 725 events. 515/725 cut-off events. For 634/814 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2355 event pairs, 191 based on Foata normal form. 180/799 useless extension candidates. Maximal degree in co-relation 1973. Up to 395 conditions per place. [2023-11-06 22:06:02,313 INFO L140 encePairwiseOnDemand]: 362/369 looper letters, 39 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-11-06 22:06:02,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 260 flow [2023-11-06 22:06:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:06:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:06:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 786 transitions. [2023-11-06 22:06:02,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42601626016260163 [2023-11-06 22:06:02,319 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 786 transitions. [2023-11-06 22:06:02,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 786 transitions. [2023-11-06 22:06:02,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:02,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 786 transitions. [2023-11-06 22:06:02,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.2) internal successors, (786), 5 states have internal predecessors, (786), 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 22:06:02,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 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 22:06:02,330 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 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 22:06:02,330 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 120 flow. Second operand 5 states and 786 transitions. [2023-11-06 22:06:02,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 260 flow [2023-11-06 22:06:02,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:06:02,335 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 145 flow [2023-11-06 22:06:02,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2023-11-06 22:06:02,336 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-11-06 22:06:02,337 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 145 flow [2023-11-06 22:06:02,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 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 22:06:02,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:02,338 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] [2023-11-06 22:06:02,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:02,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:06:02,546 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:02,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:02,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1812280224, now seen corresponding path program 1 times [2023-11-06 22:06:02,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:02,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862194922] [2023-11-06 22:06:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:02,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:02,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:02,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862194922] [2023-11-06 22:06:02,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862194922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:02,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:02,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:02,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847190657] [2023-11-06 22:06:02,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:02,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:06:02,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:02,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:06:02,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:06:02,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 369 [2023-11-06 22:06:02,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 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 22:06:02,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:02,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 369 [2023-11-06 22:06:02,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:03,152 INFO L124 PetriNetUnfolderBase]: 492/700 cut-off events. [2023-11-06 22:06:03,152 INFO L125 PetriNetUnfolderBase]: For 653/785 co-relation queries the response was YES. [2023-11-06 22:06:03,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2251 conditions, 700 events. 492/700 cut-off events. For 653/785 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2139 event pairs, 83 based on Foata normal form. 132/776 useless extension candidates. Maximal degree in co-relation 2224. Up to 556 conditions per place. [2023-11-06 22:06:03,159 INFO L140 encePairwiseOnDemand]: 365/369 looper letters, 48 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-06 22:06:03,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 320 flow [2023-11-06 22:06:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:06:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:06:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 714 transitions. [2023-11-06 22:06:03,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483739837398374 [2023-11-06 22:06:03,163 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 714 transitions. [2023-11-06 22:06:03,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 714 transitions. [2023-11-06 22:06:03,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:03,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 714 transitions. [2023-11-06 22:06:03,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 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 22:06:03,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 369.0) internal successors, (1845), 5 states have internal predecessors, (1845), 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 22:06:03,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 369.0) internal successors, (1845), 5 states have internal predecessors, (1845), 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 22:06:03,171 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 145 flow. Second operand 4 states and 714 transitions. [2023-11-06 22:06:03,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 320 flow [2023-11-06 22:06:03,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 312 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:06:03,177 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 172 flow [2023-11-06 22:06:03,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-06 22:06:03,180 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-11-06 22:06:03,180 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 172 flow [2023-11-06 22:06:03,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 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 22:06:03,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:03,181 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] [2023-11-06 22:06:03,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:06:03,182 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:03,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:03,182 INFO L85 PathProgramCache]: Analyzing trace with hash 392506210, now seen corresponding path program 2 times [2023-11-06 22:06:03,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:03,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177314977] [2023-11-06 22:06:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:03,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:03,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:03,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177314977] [2023-11-06 22:06:03,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177314977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:03,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768857995] [2023-11-06 22:06:03,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:06:03,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:03,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:03,498 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:03,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:06:03,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:06:03,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:03,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:06:03,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:03,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:04,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768857995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:04,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:04,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:06:04,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229847320] [2023-11-06 22:06:04,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:04,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:06:04,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:04,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:06:04,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:06:04,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 369 [2023-11-06 22:06:04,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 172 flow. Second operand has 10 states, 10 states have (on average 168.3) internal successors, (1683), 10 states have internal predecessors, (1683), 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 22:06:04,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:04,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 369 [2023-11-06 22:06:04,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:04,793 INFO L124 PetriNetUnfolderBase]: 793/1129 cut-off events. [2023-11-06 22:06:04,794 INFO L125 PetriNetUnfolderBase]: For 1557/1719 co-relation queries the response was YES. [2023-11-06 22:06:04,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3692 conditions, 1129 events. 793/1129 cut-off events. For 1557/1719 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3989 event pairs, 238 based on Foata normal form. 214/1316 useless extension candidates. Maximal degree in co-relation 3663. Up to 590 conditions per place. [2023-11-06 22:06:04,808 INFO L140 encePairwiseOnDemand]: 364/369 looper letters, 79 selfloop transitions, 14 changer transitions 6/100 dead transitions. [2023-11-06 22:06:04,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 100 transitions, 617 flow [2023-11-06 22:06:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:06:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:06:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1400 transitions. [2023-11-06 22:06:04,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742547425474255 [2023-11-06 22:06:04,815 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1400 transitions. [2023-11-06 22:06:04,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1400 transitions. [2023-11-06 22:06:04,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:04,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1400 transitions. [2023-11-06 22:06:04,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 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 22:06:04,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 369.0) internal successors, (3321), 9 states have internal predecessors, (3321), 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 22:06:04,832 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 369.0) internal successors, (3321), 9 states have internal predecessors, (3321), 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 22:06:04,832 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 172 flow. Second operand 8 states and 1400 transitions. [2023-11-06 22:06:04,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 100 transitions, 617 flow [2023-11-06 22:06:04,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 100 transitions, 617 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:06:04,838 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 301 flow [2023-11-06 22:06:04,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=301, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-11-06 22:06:04,840 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2023-11-06 22:06:04,840 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 301 flow [2023-11-06 22:06:04,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 168.3) internal successors, (1683), 10 states have internal predecessors, (1683), 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 22:06:04,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:04,842 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] [2023-11-06 22:06:04,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:05,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:06:05,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:05,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:05,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2080378650, now seen corresponding path program 3 times [2023-11-06 22:06:05,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:05,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988029634] [2023-11-06 22:06:05,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:05,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:05,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:05,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988029634] [2023-11-06 22:06:05,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988029634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:05,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936943483] [2023-11-06 22:06:05,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:06:05,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:05,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:05,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:05,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:06:05,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:06:05,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:05,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:06:05,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:05,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:05,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936943483] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:05,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:05,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:06:05,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086860878] [2023-11-06 22:06:05,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:05,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:06:05,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:05,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:06:05,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:06:05,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 369 [2023-11-06 22:06:05,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 301 flow. Second operand has 10 states, 10 states have (on average 168.2) internal successors, (1682), 10 states have internal predecessors, (1682), 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 22:06:05,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:05,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 369 [2023-11-06 22:06:05,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:06,613 INFO L124 PetriNetUnfolderBase]: 1173/1665 cut-off events. [2023-11-06 22:06:06,613 INFO L125 PetriNetUnfolderBase]: For 3970/4204 co-relation queries the response was YES. [2023-11-06 22:06:06,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6641 conditions, 1665 events. 1173/1665 cut-off events. For 3970/4204 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6291 event pairs, 123 based on Foata normal form. 260/1924 useless extension candidates. Maximal degree in co-relation 6607. Up to 443 conditions per place. [2023-11-06 22:06:06,637 INFO L140 encePairwiseOnDemand]: 363/369 looper letters, 99 selfloop transitions, 20 changer transitions 9/129 dead transitions. [2023-11-06 22:06:06,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 129 transitions, 932 flow [2023-11-06 22:06:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:06:06,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:06:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1579 transitions. [2023-11-06 22:06:06,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754591990364348 [2023-11-06 22:06:06,647 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1579 transitions. [2023-11-06 22:06:06,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1579 transitions. [2023-11-06 22:06:06,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:06,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1579 transitions. [2023-11-06 22:06:06,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 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 22:06:06,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 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 22:06:06,665 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 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 22:06:06,665 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 301 flow. Second operand 9 states and 1579 transitions. [2023-11-06 22:06:06,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 129 transitions, 932 flow [2023-11-06 22:06:06,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 129 transitions, 924 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-06 22:06:06,683 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 455 flow [2023-11-06 22:06:06,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=455, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2023-11-06 22:06:06,685 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2023-11-06 22:06:06,685 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 455 flow [2023-11-06 22:06:06,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 168.2) internal successors, (1682), 10 states have internal predecessors, (1682), 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 22:06:06,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:06,687 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] [2023-11-06 22:06:06,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:06,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:06:06,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:06,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:06,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1473144218, now seen corresponding path program 4 times [2023-11-06 22:06:06,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:06,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102480160] [2023-11-06 22:06:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:06,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:07,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:07,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102480160] [2023-11-06 22:06:07,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102480160] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:07,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385784846] [2023-11-06 22:06:07,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:06:07,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:07,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:07,184 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:07,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:06:07,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:06:07,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:07,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:06:07,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:07,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:07,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385784846] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:07,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:07,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-06 22:06:07,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746861962] [2023-11-06 22:06:07,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:07,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:06:07,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:06:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:06:07,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 369 [2023-11-06 22:06:07,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 455 flow. Second operand has 9 states, 9 states have (on average 168.55555555555554) internal successors, (1517), 9 states have internal predecessors, (1517), 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 22:06:07,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:07,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 369 [2023-11-06 22:06:07,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:08,467 INFO L124 PetriNetUnfolderBase]: 1386/1974 cut-off events. [2023-11-06 22:06:08,467 INFO L125 PetriNetUnfolderBase]: For 6437/6719 co-relation queries the response was YES. [2023-11-06 22:06:08,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8674 conditions, 1974 events. 1386/1974 cut-off events. For 6437/6719 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7665 event pairs, 201 based on Foata normal form. 308/2281 useless extension candidates. Maximal degree in co-relation 8636. Up to 730 conditions per place. [2023-11-06 22:06:08,503 INFO L140 encePairwiseOnDemand]: 363/369 looper letters, 77 selfloop transitions, 24 changer transitions 9/111 dead transitions. [2023-11-06 22:06:08,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 111 transitions, 919 flow [2023-11-06 22:06:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:06:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:06:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1231 transitions. [2023-11-06 22:06:08,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47657762291908634 [2023-11-06 22:06:08,511 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1231 transitions. [2023-11-06 22:06:08,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1231 transitions. [2023-11-06 22:06:08,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:08,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1231 transitions. [2023-11-06 22:06:08,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.85714285714286) internal successors, (1231), 7 states have internal predecessors, (1231), 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 22:06:08,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 369.0) internal successors, (2952), 8 states have internal predecessors, (2952), 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 22:06:08,537 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 369.0) internal successors, (2952), 8 states have internal predecessors, (2952), 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 22:06:08,547 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 455 flow. Second operand 7 states and 1231 transitions. [2023-11-06 22:06:08,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 111 transitions, 919 flow [2023-11-06 22:06:08,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 111 transitions, 888 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-06 22:06:08,590 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 576 flow [2023-11-06 22:06:08,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=576, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-11-06 22:06:08,591 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 42 predicate places. [2023-11-06 22:06:08,591 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 576 flow [2023-11-06 22:06:08,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 168.55555555555554) internal successors, (1517), 9 states have internal predecessors, (1517), 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 22:06:08,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:08,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:08,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:08,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:08,814 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:08,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1652863751, now seen corresponding path program 5 times [2023-11-06 22:06:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:08,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294728989] [2023-11-06 22:06:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:08,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:09,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:09,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294728989] [2023-11-06 22:06:09,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294728989] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:09,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645926234] [2023-11-06 22:06:09,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:06:09,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:09,042 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:09,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:06:09,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-06 22:06:09,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:09,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:06:09,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:09,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:09,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645926234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:09,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:09,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-06 22:06:09,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503495296] [2023-11-06 22:06:09,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:09,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:06:09,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:09,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:06:09,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:06:10,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 369 [2023-11-06 22:06:10,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 576 flow. Second operand has 14 states, 14 states have (on average 151.07142857142858) internal successors, (2115), 14 states have internal predecessors, (2115), 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 22:06:10,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:10,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 369 [2023-11-06 22:06:10,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:10,979 INFO L124 PetriNetUnfolderBase]: 1736/2539 cut-off events. [2023-11-06 22:06:10,979 INFO L125 PetriNetUnfolderBase]: For 11913/12484 co-relation queries the response was YES. [2023-11-06 22:06:10,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11518 conditions, 2539 events. 1736/2539 cut-off events. For 11913/12484 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10831 event pairs, 855 based on Foata normal form. 589/3113 useless extension candidates. Maximal degree in co-relation 9409. Up to 1804 conditions per place. [2023-11-06 22:06:11,015 INFO L140 encePairwiseOnDemand]: 360/369 looper letters, 53 selfloop transitions, 6 changer transitions 57/121 dead transitions. [2023-11-06 22:06:11,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 121 transitions, 1178 flow [2023-11-06 22:06:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:06:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:06:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1552 transitions. [2023-11-06 22:06:11,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205962059620596 [2023-11-06 22:06:11,024 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1552 transitions. [2023-11-06 22:06:11,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1552 transitions. [2023-11-06 22:06:11,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:11,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1552 transitions. [2023-11-06 22:06:11,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.2) internal successors, (1552), 10 states have internal predecessors, (1552), 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 22:06:11,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 369.0) internal successors, (4059), 11 states have internal predecessors, (4059), 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 22:06:11,044 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 369.0) internal successors, (4059), 11 states have internal predecessors, (4059), 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 22:06:11,044 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 576 flow. Second operand 10 states and 1552 transitions. [2023-11-06 22:06:11,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 121 transitions, 1178 flow [2023-11-06 22:06:11,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 121 transitions, 1130 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-06 22:06:11,095 INFO L231 Difference]: Finished difference. Result has 87 places, 64 transitions, 599 flow [2023-11-06 22:06:11,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=599, PETRI_PLACES=87, PETRI_TRANSITIONS=64} [2023-11-06 22:06:11,097 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2023-11-06 22:06:11,097 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 64 transitions, 599 flow [2023-11-06 22:06:11,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 151.07142857142858) internal successors, (2115), 14 states have internal predecessors, (2115), 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 22:06:11,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:11,098 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:11,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:11,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:06:11,307 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:11,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:11,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1691478512, now seen corresponding path program 6 times [2023-11-06 22:06:11,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:11,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751721392] [2023-11-06 22:06:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:11,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:06:11,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:11,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751721392] [2023-11-06 22:06:11,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751721392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:11,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610556808] [2023-11-06 22:06:11,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:06:11,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:11,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,529 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:06:11,899 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:06:11,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:11,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:06:11,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:06:12,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:06:12,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610556808] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:12,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:12,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-11-06 22:06:12,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593855624] [2023-11-06 22:06:12,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:12,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:06:12,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:12,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:06:12,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:06:12,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 369 [2023-11-06 22:06:12,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 64 transitions, 599 flow. Second operand has 14 states, 14 states have (on average 146.64285714285714) internal successors, (2053), 14 states have internal predecessors, (2053), 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 22:06:12,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:12,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 369 [2023-11-06 22:06:12,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:13,612 INFO L124 PetriNetUnfolderBase]: 1966/2773 cut-off events. [2023-11-06 22:06:13,613 INFO L125 PetriNetUnfolderBase]: For 13689/13895 co-relation queries the response was YES. [2023-11-06 22:06:13,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13048 conditions, 2773 events. 1966/2773 cut-off events. For 13689/13895 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11433 event pairs, 602 based on Foata normal form. 315/3044 useless extension candidates. Maximal degree in co-relation 12991. Up to 1807 conditions per place. [2023-11-06 22:06:13,640 INFO L140 encePairwiseOnDemand]: 361/369 looper letters, 132 selfloop transitions, 9 changer transitions 0/145 dead transitions. [2023-11-06 22:06:13,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 145 transitions, 1757 flow [2023-11-06 22:06:13,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:06:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:06:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1347 transitions. [2023-11-06 22:06:13,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056007226738934 [2023-11-06 22:06:13,648 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1347 transitions. [2023-11-06 22:06:13,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1347 transitions. [2023-11-06 22:06:13,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:13,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1347 transitions. [2023-11-06 22:06:13,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 149.66666666666666) internal successors, (1347), 9 states have internal predecessors, (1347), 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 22:06:13,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 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 22:06:13,663 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 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 22:06:13,664 INFO L175 Difference]: Start difference. First operand has 87 places, 64 transitions, 599 flow. Second operand 9 states and 1347 transitions. [2023-11-06 22:06:13,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 145 transitions, 1757 flow [2023-11-06 22:06:13,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 145 transitions, 1683 flow, removed 35 selfloop flow, removed 6 redundant places. [2023-11-06 22:06:13,712 INFO L231 Difference]: Finished difference. Result has 84 places, 65 transitions, 595 flow [2023-11-06 22:06:13,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=595, PETRI_PLACES=84, PETRI_TRANSITIONS=65} [2023-11-06 22:06:13,714 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2023-11-06 22:06:13,715 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 595 flow [2023-11-06 22:06:13,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 146.64285714285714) internal successors, (2053), 14 states have internal predecessors, (2053), 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 22:06:13,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:13,716 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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 22:06:13,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-06 22:06:13,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:06:13,923 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:13,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:13,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1336504939, now seen corresponding path program 7 times [2023-11-06 22:06:13,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:13,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858839046] [2023-11-06 22:06:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:13,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:06:14,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858839046] [2023-11-06 22:06:14,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858839046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470431708] [2023-11-06 22:06:14,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:06:14,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:14,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:14,119 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:14,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:06:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:14,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:06:14,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:06:14,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:06:14,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470431708] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:14,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:14,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-06 22:06:14,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808740852] [2023-11-06 22:06:14,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:14,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:06:14,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:14,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:06:14,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:06:15,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 369 [2023-11-06 22:06:15,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 65 transitions, 595 flow. Second operand has 14 states, 14 states have (on average 152.57142857142858) internal successors, (2136), 14 states have internal predecessors, (2136), 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 22:06:15,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:15,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 369 [2023-11-06 22:06:15,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:15,892 INFO L124 PetriNetUnfolderBase]: 2063/2907 cut-off events. [2023-11-06 22:06:15,892 INFO L125 PetriNetUnfolderBase]: For 13164/13508 co-relation queries the response was YES. [2023-11-06 22:06:15,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13831 conditions, 2907 events. 2063/2907 cut-off events. For 13164/13508 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11439 event pairs, 389 based on Foata normal form. 376/3280 useless extension candidates. Maximal degree in co-relation 13776. Up to 1354 conditions per place. [2023-11-06 22:06:15,921 INFO L140 encePairwiseOnDemand]: 359/369 looper letters, 92 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2023-11-06 22:06:15,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 111 transitions, 1092 flow [2023-11-06 22:06:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:06:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:06:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1559 transitions. [2023-11-06 22:06:15,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42249322493224933 [2023-11-06 22:06:15,929 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1559 transitions. [2023-11-06 22:06:15,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1559 transitions. [2023-11-06 22:06:15,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:15,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1559 transitions. [2023-11-06 22:06:15,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.9) internal successors, (1559), 10 states have internal predecessors, (1559), 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 22:06:15,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 369.0) internal successors, (4059), 11 states have internal predecessors, (4059), 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 22:06:15,945 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 369.0) internal successors, (4059), 11 states have internal predecessors, (4059), 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 22:06:15,945 INFO L175 Difference]: Start difference. First operand has 84 places, 65 transitions, 595 flow. Second operand 10 states and 1559 transitions. [2023-11-06 22:06:15,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 111 transitions, 1092 flow [2023-11-06 22:06:15,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 1055 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-06 22:06:15,986 INFO L231 Difference]: Finished difference. Result has 89 places, 68 transitions, 651 flow [2023-11-06 22:06:15,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=651, PETRI_PLACES=89, PETRI_TRANSITIONS=68} [2023-11-06 22:06:15,987 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 56 predicate places. [2023-11-06 22:06:15,987 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 68 transitions, 651 flow [2023-11-06 22:06:15,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 152.57142857142858) internal successors, (2136), 14 states have internal predecessors, (2136), 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 22:06:15,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:15,989 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:16,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:16,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:06:16,196 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:16,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:16,197 INFO L85 PathProgramCache]: Analyzing trace with hash -388406405, now seen corresponding path program 8 times [2023-11-06 22:06:16,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:16,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224100936] [2023-11-06 22:06:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:06:16,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:16,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224100936] [2023-11-06 22:06:16,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224100936] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:16,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730321509] [2023-11-06 22:06:16,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:06:16,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:16,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:16,564 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:16,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:06:16,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:06:16,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:16,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:06:16,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:06:16,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:06:16,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730321509] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:16,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:16,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-06 22:06:16,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915465036] [2023-11-06 22:06:16,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:16,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:06:16,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:06:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:06:17,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 369 [2023-11-06 22:06:17,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 68 transitions, 651 flow. Second operand has 15 states, 15 states have (on average 167.46666666666667) internal successors, (2512), 15 states have internal predecessors, (2512), 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 22:06:17,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:17,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 369 [2023-11-06 22:06:17,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:18,298 INFO L124 PetriNetUnfolderBase]: 2509/3529 cut-off events. [2023-11-06 22:06:18,298 INFO L125 PetriNetUnfolderBase]: For 15312/15700 co-relation queries the response was YES. [2023-11-06 22:06:18,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16920 conditions, 3529 events. 2509/3529 cut-off events. For 15312/15700 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 14484 event pairs, 787 based on Foata normal form. 420/3948 useless extension candidates. Maximal degree in co-relation 16863. Up to 1679 conditions per place. [2023-11-06 22:06:18,333 INFO L140 encePairwiseOnDemand]: 362/369 looper letters, 124 selfloop transitions, 29 changer transitions 14/168 dead transitions. [2023-11-06 22:06:18,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 168 transitions, 1512 flow [2023-11-06 22:06:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:06:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:06:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1924 transitions. [2023-11-06 22:06:18,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47400837644740085 [2023-11-06 22:06:18,343 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1924 transitions. [2023-11-06 22:06:18,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1924 transitions. [2023-11-06 22:06:18,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:18,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1924 transitions. [2023-11-06 22:06:18,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 174.9090909090909) internal successors, (1924), 11 states have internal predecessors, (1924), 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 22:06:18,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 369.0) internal successors, (4428), 12 states have internal predecessors, (4428), 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 22:06:18,360 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 369.0) internal successors, (4428), 12 states have internal predecessors, (4428), 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 22:06:18,361 INFO L175 Difference]: Start difference. First operand has 89 places, 68 transitions, 651 flow. Second operand 11 states and 1924 transitions. [2023-11-06 22:06:18,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 168 transitions, 1512 flow [2023-11-06 22:06:18,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 168 transitions, 1495 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:06:18,415 INFO L231 Difference]: Finished difference. Result has 97 places, 75 transitions, 825 flow [2023-11-06 22:06:18,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=825, PETRI_PLACES=97, PETRI_TRANSITIONS=75} [2023-11-06 22:06:18,417 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 64 predicate places. [2023-11-06 22:06:18,417 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 75 transitions, 825 flow [2023-11-06 22:06:18,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 167.46666666666667) internal successors, (2512), 15 states have internal predecessors, (2512), 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 22:06:18,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:18,419 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:18,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:18,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:06:18,626 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:18,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash -27290613, now seen corresponding path program 9 times [2023-11-06 22:06:18,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:18,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740638000] [2023-11-06 22:06:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:18,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:06:18,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:18,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740638000] [2023-11-06 22:06:18,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740638000] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:18,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214765028] [2023-11-06 22:06:18,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:06:18,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:18,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:18,932 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:18,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:06:19,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:06:19,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:19,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:06:19,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:06:19,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:06:19,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214765028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:19,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:19,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-06 22:06:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064404790] [2023-11-06 22:06:19,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:19,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:06:19,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:06:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:06:19,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 369 [2023-11-06 22:06:19,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 75 transitions, 825 flow. Second operand has 11 states, 11 states have (on average 168.0) internal successors, (1848), 11 states have internal predecessors, (1848), 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 22:06:19,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:19,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 369 [2023-11-06 22:06:19,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:20,571 INFO L124 PetriNetUnfolderBase]: 2981/4193 cut-off events. [2023-11-06 22:06:20,572 INFO L125 PetriNetUnfolderBase]: For 20903/21367 co-relation queries the response was YES. [2023-11-06 22:06:20,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21720 conditions, 4193 events. 2981/4193 cut-off events. For 20903/21367 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17560 event pairs, 315 based on Foata normal form. 496/4688 useless extension candidates. Maximal degree in co-relation 21664. Up to 1283 conditions per place. [2023-11-06 22:06:20,622 INFO L140 encePairwiseOnDemand]: 361/369 looper letters, 139 selfloop transitions, 43 changer transitions 20/203 dead transitions. [2023-11-06 22:06:20,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 203 transitions, 1936 flow [2023-11-06 22:06:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:06:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:06:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2277 transitions. [2023-11-06 22:06:20,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474671669793621 [2023-11-06 22:06:20,629 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2277 transitions. [2023-11-06 22:06:20,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2277 transitions. [2023-11-06 22:06:20,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:20,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2277 transitions. [2023-11-06 22:06:20,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 175.15384615384616) internal successors, (2277), 13 states have internal predecessors, (2277), 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 22:06:20,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 369.0) internal successors, (5166), 14 states have internal predecessors, (5166), 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 22:06:20,647 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 369.0) internal successors, (5166), 14 states have internal predecessors, (5166), 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 22:06:20,648 INFO L175 Difference]: Start difference. First operand has 97 places, 75 transitions, 825 flow. Second operand 13 states and 2277 transitions. [2023-11-06 22:06:20,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 203 transitions, 1936 flow [2023-11-06 22:06:20,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 203 transitions, 1893 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-06 22:06:20,744 INFO L231 Difference]: Finished difference. Result has 110 places, 85 transitions, 1095 flow [2023-11-06 22:06:20,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1095, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2023-11-06 22:06:20,745 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 77 predicate places. [2023-11-06 22:06:20,746 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 1095 flow [2023-11-06 22:06:20,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 168.0) internal successors, (1848), 11 states have internal predecessors, (1848), 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 22:06:20,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:20,747 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:20,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:20,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:06:20,954 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:20,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash -326801618, now seen corresponding path program 10 times [2023-11-06 22:06:20,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:20,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065121736] [2023-11-06 22:06:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:20,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:06:21,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065121736] [2023-11-06 22:06:21,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065121736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560131148] [2023-11-06 22:06:21,184 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:06:21,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:21,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:21,199 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:21,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:06:21,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:06:21,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:21,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:06:21,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:06:21,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:06:21,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560131148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:21,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:21,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2023-11-06 22:06:21,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202408417] [2023-11-06 22:06:21,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:21,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:06:21,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:21,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:06:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:06:22,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 369 [2023-11-06 22:06:22,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 1095 flow. Second operand has 19 states, 19 states have (on average 146.26315789473685) internal successors, (2779), 19 states have internal predecessors, (2779), 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 22:06:22,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:22,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 369 [2023-11-06 22:06:22,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:26,000 INFO L124 PetriNetUnfolderBase]: 9390/13044 cut-off events. [2023-11-06 22:06:26,000 INFO L125 PetriNetUnfolderBase]: For 116254/116692 co-relation queries the response was YES. [2023-11-06 22:06:26,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74729 conditions, 13044 events. 9390/13044 cut-off events. For 116254/116692 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 64137 event pairs, 1641 based on Foata normal form. 819/13820 useless extension candidates. Maximal degree in co-relation 58387. Up to 3571 conditions per place. [2023-11-06 22:06:26,147 INFO L140 encePairwiseOnDemand]: 357/369 looper letters, 498 selfloop transitions, 123 changer transitions 313/939 dead transitions. [2023-11-06 22:06:26,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 939 transitions, 14348 flow [2023-11-06 22:06:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-06 22:06:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-06 22:06:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6544 transitions. [2023-11-06 22:06:26,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124283103296149 [2023-11-06 22:06:26,168 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6544 transitions. [2023-11-06 22:06:26,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6544 transitions. [2023-11-06 22:06:26,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:26,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6544 transitions. [2023-11-06 22:06:26,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 152.1860465116279) internal successors, (6544), 43 states have internal predecessors, (6544), 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 22:06:26,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 369.0) internal successors, (16236), 44 states have internal predecessors, (16236), 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 22:06:26,220 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 369.0) internal successors, (16236), 44 states have internal predecessors, (16236), 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 22:06:26,221 INFO L175 Difference]: Start difference. First operand has 110 places, 85 transitions, 1095 flow. Second operand 43 states and 6544 transitions. [2023-11-06 22:06:26,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 939 transitions, 14348 flow [2023-11-06 22:06:26,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 939 transitions, 13706 flow, removed 212 selfloop flow, removed 6 redundant places. [2023-11-06 22:06:26,902 INFO L231 Difference]: Finished difference. Result has 174 places, 203 transitions, 3473 flow [2023-11-06 22:06:26,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3473, PETRI_PLACES=174, PETRI_TRANSITIONS=203} [2023-11-06 22:06:26,903 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 141 predicate places. [2023-11-06 22:06:26,903 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 203 transitions, 3473 flow [2023-11-06 22:06:26,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 146.26315789473685) internal successors, (2779), 19 states have internal predecessors, (2779), 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 22:06:26,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:26,904 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:26,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:27,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:06:27,109 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:27,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:27,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2116315483, now seen corresponding path program 11 times [2023-11-06 22:06:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:27,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046182650] [2023-11-06 22:06:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:06:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046182650] [2023-11-06 22:06:27,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046182650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287222870] [2023-11-06 22:06:27,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:06:27,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:27,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:27,464 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:27,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:06:27,844 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-06 22:06:27,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:27,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:06:27,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:06:27,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:06:28,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287222870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:28,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:28,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2023-11-06 22:06:28,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862654935] [2023-11-06 22:06:28,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:28,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:06:28,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:06:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:06:28,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 369 [2023-11-06 22:06:28,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 203 transitions, 3473 flow. Second operand has 18 states, 18 states have (on average 143.16666666666666) internal successors, (2577), 18 states have internal predecessors, (2577), 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 22:06:28,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:28,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 369 [2023-11-06 22:06:28,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:32,975 INFO L124 PetriNetUnfolderBase]: 8691/11788 cut-off events. [2023-11-06 22:06:32,975 INFO L125 PetriNetUnfolderBase]: For 177700/177700 co-relation queries the response was YES. [2023-11-06 22:06:33,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84735 conditions, 11788 events. 8691/11788 cut-off events. For 177700/177700 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 51156 event pairs, 292 based on Foata normal form. 682/12470 useless extension candidates. Maximal degree in co-relation 84633. Up to 2931 conditions per place. [2023-11-06 22:06:33,131 INFO L140 encePairwiseOnDemand]: 353/369 looper letters, 526 selfloop transitions, 339 changer transitions 71/936 dead transitions. [2023-11-06 22:06:33,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 936 transitions, 14872 flow [2023-11-06 22:06:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-06 22:06:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-11-06 22:06:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 9393 transitions. [2023-11-06 22:06:33,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977388211382114 [2023-11-06 22:06:33,149 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 9393 transitions. [2023-11-06 22:06:33,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 9393 transitions. [2023-11-06 22:06:33,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:33,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 9393 transitions. [2023-11-06 22:06:33,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 146.765625) internal successors, (9393), 64 states have internal predecessors, (9393), 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 22:06:33,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 369.0) internal successors, (23985), 65 states have internal predecessors, (23985), 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 22:06:33,196 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 369.0) internal successors, (23985), 65 states have internal predecessors, (23985), 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 22:06:33,197 INFO L175 Difference]: Start difference. First operand has 174 places, 203 transitions, 3473 flow. Second operand 64 states and 9393 transitions. [2023-11-06 22:06:33,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 936 transitions, 14872 flow [2023-11-06 22:06:34,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 936 transitions, 13038 flow, removed 828 selfloop flow, removed 25 redundant places. [2023-11-06 22:06:34,370 INFO L231 Difference]: Finished difference. Result has 215 places, 443 transitions, 6938 flow [2023-11-06 22:06:34,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=6938, PETRI_PLACES=215, PETRI_TRANSITIONS=443} [2023-11-06 22:06:34,370 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 182 predicate places. [2023-11-06 22:06:34,370 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 443 transitions, 6938 flow [2023-11-06 22:06:34,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 143.16666666666666) internal successors, (2577), 18 states have internal predecessors, (2577), 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 22:06:34,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:34,371 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:34,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-06 22:06:34,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:06:34,572 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:06:34,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:34,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1794964018, now seen corresponding path program 12 times [2023-11-06 22:06:34,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:34,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045651109] [2023-11-06 22:06:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:34,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:06:35,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:35,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045651109] [2023-11-06 22:06:35,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045651109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:35,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115059710] [2023-11-06 22:06:35,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:06:35,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:35,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:35,079 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:35,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:06:35,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-11-06 22:06:35,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:35,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:06:35,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:06:36,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:06:36,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115059710] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:36,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:36,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2023-11-06 22:06:36,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384619721] [2023-11-06 22:06:36,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:36,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:06:36,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:36,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:06:36,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:06:37,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 369 [2023-11-06 22:06:37,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 443 transitions, 6938 flow. Second operand has 22 states, 22 states have (on average 145.04545454545453) internal successors, (3191), 22 states have internal predecessors, (3191), 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 22:06:37,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:37,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 369 [2023-11-06 22:06:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:43,095 INFO L124 PetriNetUnfolderBase]: 10790/14712 cut-off events. [2023-11-06 22:06:43,095 INFO L125 PetriNetUnfolderBase]: For 232327/232351 co-relation queries the response was YES. [2023-11-06 22:06:43,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106112 conditions, 14712 events. 10790/14712 cut-off events. For 232327/232351 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 66856 event pairs, 275 based on Foata normal form. 578/15281 useless extension candidates. Maximal degree in co-relation 106005. Up to 3871 conditions per place. [2023-11-06 22:06:43,244 INFO L140 encePairwiseOnDemand]: 355/369 looper letters, 0 selfloop transitions, 0 changer transitions 1539/1539 dead transitions. [2023-11-06 22:06:43,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1539 transitions, 22277 flow [2023-11-06 22:06:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-06 22:06:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-06 22:06:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 6604 transitions. [2023-11-06 22:06:43,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40675043114067505 [2023-11-06 22:06:43,258 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 6604 transitions. [2023-11-06 22:06:43,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 6604 transitions. [2023-11-06 22:06:43,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:43,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 6604 transitions. [2023-11-06 22:06:43,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 150.0909090909091) internal successors, (6604), 44 states have internal predecessors, (6604), 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 22:06:43,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 369.0) internal successors, (16605), 45 states have internal predecessors, (16605), 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 22:06:43,292 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 369.0) internal successors, (16605), 45 states have internal predecessors, (16605), 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 22:06:43,292 INFO L175 Difference]: Start difference. First operand has 215 places, 443 transitions, 6938 flow. Second operand 44 states and 6604 transitions. [2023-11-06 22:06:43,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1539 transitions, 22277 flow [2023-11-06 22:06:46,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1539 transitions, 19596 flow, removed 1030 selfloop flow, removed 20 redundant places. [2023-11-06 22:06:46,158 INFO L231 Difference]: Finished difference. Result has 235 places, 0 transitions, 0 flow [2023-11-06 22:06:46,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=5990, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=0, PETRI_PLACES=235, PETRI_TRANSITIONS=0} [2023-11-06 22:06:46,159 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 202 predicate places. [2023-11-06 22:06:46,159 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 0 transitions, 0 flow [2023-11-06 22:06:46,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 145.04545454545453) internal successors, (3191), 22 states have internal predecessors, (3191), 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 22:06:46,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-06 22:06:46,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-06 22:06:46,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 22:06:46,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-06 22:06:46,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:46,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:46,366 INFO L445 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:46,369 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:06:46,369 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:06:46,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:06:46 BasicIcfg [2023-11-06 22:06:46,372 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:06:46,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:06:46,373 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:06:46,373 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:06:46,374 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:05:44" (3/4) ... [2023-11-06 22:06:46,376 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:06:46,379 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:06:46,379 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:06:46,379 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:06:46,385 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-11-06 22:06:46,386 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:06:46,386 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:06:46,387 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:06:46,446 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:06:46,447 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:06:46,447 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:06:46,448 INFO L158 Benchmark]: Toolchain (without parser) took 63187.14ms. Allocated memory was 148.9MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 103.6MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 805.7MB. Max. memory is 16.1GB. [2023-11-06 22:06:46,448 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory was 59.7MB in the beginning and 59.5MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:06:46,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.57ms. Allocated memory is still 148.9MB. Free memory was 103.0MB in the beginning and 91.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:06:46,449 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.17ms. Allocated memory is still 148.9MB. Free memory was 91.5MB in the beginning and 89.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:06:46,450 INFO L158 Benchmark]: Boogie Preprocessor took 45.51ms. Allocated memory is still 148.9MB. Free memory was 89.4MB in the beginning and 87.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:06:46,450 INFO L158 Benchmark]: RCFGBuilder took 862.32ms. Allocated memory is still 148.9MB. Free memory was 87.8MB in the beginning and 115.0MB in the end (delta: -27.1MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-11-06 22:06:46,451 INFO L158 Benchmark]: TraceAbstraction took 61711.28ms. Allocated memory was 148.9MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 114.9MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 842.3MB. Max. memory is 16.1GB. [2023-11-06 22:06:46,451 INFO L158 Benchmark]: Witness Printer took 74.63ms. Allocated memory is still 4.4GB. Free memory was 3.5GB in the beginning and 3.5GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:06:46,453 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory was 59.7MB in the beginning and 59.5MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 423.57ms. Allocated memory is still 148.9MB. Free memory was 103.0MB in the beginning and 91.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.17ms. Allocated memory is still 148.9MB. Free memory was 91.5MB in the beginning and 89.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.51ms. Allocated memory is still 148.9MB. Free memory was 89.4MB in the beginning and 87.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 862.32ms. Allocated memory is still 148.9MB. Free memory was 87.8MB in the beginning and 115.0MB in the end (delta: -27.1MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * TraceAbstraction took 61711.28ms. Allocated memory was 148.9MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 114.9MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 842.3MB. Max. memory is 16.1GB. * Witness Printer took 74.63ms. Allocated memory is still 4.4GB. Free memory was 3.5GB in the beginning and 3.5GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4s, 170 PlacesBefore, 33 PlacesAfterwards, 176 TransitionsBefore, 29 TransitionsAfterwards, 1942 CoEnabledTransitionPairs, 7 FixpointIterations, 102 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 8 ConcurrentYvCompositions, 10 ChoiceCompositions, 179 TotalNumberOfCompositions, 2624 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2079, independent: 2019, independent conditional: 0, independent unconditional: 2019, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1077, independent: 1056, independent conditional: 0, independent unconditional: 1056, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2079, independent: 963, independent conditional: 0, independent unconditional: 963, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 1077, unknown conditional: 0, unknown unconditional: 1077] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 103]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 213 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 61.5s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 35.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5711 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4821 mSDsluCounter, 6291 SdHoareTripleChecker+Invalid, 10.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5800 mSDsCounter, 238 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15713 IncrementalHoareTripleChecker+Invalid, 15951 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 238 mSolverCounterUnsat, 491 mSDtfsCounter, 15713 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1261 GetRequests, 905 SyntacticMatches, 30 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3441 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6938occurred in iteration=18, InterpolantAutomatonStates: 269, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 1018 NumberOfCodeBlocks, 1010 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 1431 ConstructedInterpolants, 0 QuantifiedInterpolants, 3895 SizeOfPredicates, 47 NumberOfNonLiveVariables, 3658 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 49 InterpolantComputations, 8 PerfectInterpolantSequences, 415/544 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:06:46,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e617c90-99a3-43be-a4c6-2b20d574b0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE