./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 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/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_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:14:58,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:14:58,642 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:14:58,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:14:58,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:14:58,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:14:58,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:14:58,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:14:58,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:14:58,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:14:58,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:14:58,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:14:58,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:14:58,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:14:58,686 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:14:58,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:14:58,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:14:58,687 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:14:58,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:14:58,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:14:58,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:14:58,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:14:58,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:14:58,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:14:58,688 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:14:58,688 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:14:58,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:14:58,688 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:14:58,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:14:58,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:14:58,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:14:58,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:14:58,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:14:58,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:14:58,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:14:58,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:14:58,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:14:58,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:14:58,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:14:58,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:14:58,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:14:58,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:14:58,690 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-13 15:14:59,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:14:59,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:14:59,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:14:59,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:14:59,077 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:14:59,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c Unable to find full path for "g++" [2024-11-13 15:15:01,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:15:01,460 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:15:01,461 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-13 15:15:01,470 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/data/590bd1919/08eb1997525e431cae464a698bd4c4af/FLAG74ee091d0 [2024-11-13 15:15:01,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/data/590bd1919/08eb1997525e431cae464a698bd4c4af [2024-11-13 15:15:01,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:15:01,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:15:01,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:15:01,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:15:01,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:15:01,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,511 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b892abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01, skipping insertion in model container [2024-11-13 15:15:01,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,538 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:15:01,765 WARN L250 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_e41d4c18-a83d-416e-80b3-cfc4b568138a/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2429,2442] [2024-11-13 15:15:01,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:15:01,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:15:01,840 WARN L250 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_e41d4c18-a83d-416e-80b3-cfc4b568138a/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2429,2442] [2024-11-13 15:15:01,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:15:01,874 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:15:01,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01 WrapperNode [2024-11-13 15:15:01,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:15:01,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:15:01,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:15:01,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:15:01,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,933 INFO L138 Inliner]: procedures = 23, calls = 20, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 107 [2024-11-13 15:15:01,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:15:01,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:15:01,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:15:01,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:15:01,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,950 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,974 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-13 15:15:01,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:01,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:15:01,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:15:01,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:15:01,998 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:15:01,999 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (1/1) ... [2024-11-13 15:15:02,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:15:02,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:02,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:15:02,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:15:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:15:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:15:02,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:15:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:15:02,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:15:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 15:15:02,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 15:15:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:15:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:15:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:15:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:15:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:15:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:15:02,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:15:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:15:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:15:02,092 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:15:02,228 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:15:02,230 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:15:02,714 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:15:02,714 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:15:03,030 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:15:03,034 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 15:15:03,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:15:03 BoogieIcfgContainer [2024-11-13 15:15:03,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:15:03,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:15:03,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:15:03,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:15:03,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:15:01" (1/3) ... [2024-11-13 15:15:03,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e787d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:15:03, skipping insertion in model container [2024-11-13 15:15:03,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:15:01" (2/3) ... [2024-11-13 15:15:03,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e787d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:15:03, skipping insertion in model container [2024-11-13 15:15:03,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:15:03" (3/3) ... [2024-11-13 15:15:03,048 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-13 15:15:03,103 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:15:03,104 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-array-sum.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-13 15:15:03,105 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:15:03,205 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 15:15:03,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 41 transitions, 103 flow [2024-11-13 15:15:03,326 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-13 15:15:03,331 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:15:03,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 6/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2024-11-13 15:15:03,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 41 transitions, 103 flow [2024-11-13 15:15:03,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 37 transitions, 92 flow [2024-11-13 15:15:03,355 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:15:03,373 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ab84170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:15:03,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 15:15:03,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:15:03,402 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-13 15:15:03,402 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:15:03,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:03,403 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:03,403 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:15:03,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1661595546, now seen corresponding path program 1 times [2024-11-13 15:15:03,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:03,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916366676] [2024-11-13 15:15:03,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:03,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:15:04,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:04,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916366676] [2024-11-13 15:15:04,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916366676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:15:04,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:15:04,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:15:04,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547697544] [2024-11-13 15:15:04,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:04,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:15:04,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:04,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:15:04,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:15:04,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:04,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:04,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:04,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:04,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:05,334 INFO L124 PetriNetUnfolderBase]: 1244/2030 cut-off events. [2024-11-13 15:15:05,335 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2024-11-13 15:15:05,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 2030 events. 1244/2030 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10734 event pairs, 782 based on Foata normal form. 1/1904 useless extension candidates. Maximal degree in co-relation 1885. Up to 1028 conditions per place. [2024-11-13 15:15:05,368 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 49 selfloop transitions, 5 changer transitions 1/63 dead transitions. [2024-11-13 15:15:05,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 272 flow [2024-11-13 15:15:05,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:15:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:15:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-13 15:15:05,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-13 15:15:05,393 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 92 flow. Second operand 4 states and 100 transitions. [2024-11-13 15:15:05,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 272 flow [2024-11-13 15:15:05,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 248 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 15:15:05,415 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 114 flow [2024-11-13 15:15:05,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2024-11-13 15:15:05,423 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-11-13 15:15:05,423 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 114 flow [2024-11-13 15:15:05,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:05,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:05,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:05,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:15:05,425 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:15:05,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2018091297, now seen corresponding path program 1 times [2024-11-13 15:15:05,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:05,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081842654] [2024-11-13 15:15:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:05,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:15:05,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:05,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081842654] [2024-11-13 15:15:05,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081842654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:05,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303706077] [2024-11-13 15:15:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:05,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:05,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:05,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:05,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:15:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:05,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:15:05,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:15:06,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:15:06,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303706077] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:06,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:15:06,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-13 15:15:06,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764924287] [2024-11-13 15:15:06,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:06,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:15:06,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:15:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:15:06,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-11-13 15:15:06,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:06,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:06,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-11-13 15:15:06,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:06,794 INFO L124 PetriNetUnfolderBase]: 2249/3791 cut-off events. [2024-11-13 15:15:06,794 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-11-13 15:15:06,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7426 conditions, 3791 events. 2249/3791 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 23337 event pairs, 1558 based on Foata normal form. 0/3529 useless extension candidates. Maximal degree in co-relation 5648. Up to 1537 conditions per place. [2024-11-13 15:15:06,831 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 52 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2024-11-13 15:15:06,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 297 flow [2024-11-13 15:15:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:15:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:15:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-13 15:15:06,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5707317073170731 [2024-11-13 15:15:06,836 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 114 flow. Second operand 5 states and 117 transitions. [2024-11-13 15:15:06,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 297 flow [2024-11-13 15:15:06,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 290 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 15:15:06,841 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 138 flow [2024-11-13 15:15:06,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-13 15:15:06,844 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-11-13 15:15:06,844 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 138 flow [2024-11-13 15:15:06,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:06,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:06,844 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:06,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:15:07,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:07,047 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:15:07,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:07,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1319717182, now seen corresponding path program 1 times [2024-11-13 15:15:07,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:07,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431249891] [2024-11-13 15:15:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:07,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:15:07,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:07,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431249891] [2024-11-13 15:15:07,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431249891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:07,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071634532] [2024-11-13 15:15:07,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:07,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:07,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:07,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:07,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:15:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:07,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:15:07,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:15:07,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:15:07,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071634532] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:07,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:15:07,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-13 15:15:07,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127080567] [2024-11-13 15:15:07,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:07,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:15:07,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:15:07,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:15:07,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:07,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:07,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:07,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:07,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:08,401 INFO L124 PetriNetUnfolderBase]: 2697/4356 cut-off events. [2024-11-13 15:15:08,402 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-13 15:15:08,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8570 conditions, 4356 events. 2697/4356 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 25733 event pairs, 996 based on Foata normal form. 0/3965 useless extension candidates. Maximal degree in co-relation 7013. Up to 1122 conditions per place. [2024-11-13 15:15:08,438 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 78 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2024-11-13 15:15:08,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 98 transitions, 440 flow [2024-11-13 15:15:08,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:15:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:15:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-11-13 15:15:08,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-13 15:15:08,443 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 138 flow. Second operand 6 states and 153 transitions. [2024-11-13 15:15:08,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 98 transitions, 440 flow [2024-11-13 15:15:08,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 98 transitions, 436 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 15:15:08,450 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 186 flow [2024-11-13 15:15:08,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-11-13 15:15:08,452 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-13 15:15:08,452 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 186 flow [2024-11-13 15:15:08,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:08,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:08,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:08,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:15:08,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:08,655 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:15:08,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:08,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1627987578, now seen corresponding path program 1 times [2024-11-13 15:15:08,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:08,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252626080] [2024-11-13 15:15:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:08,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:15:08,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:08,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252626080] [2024-11-13 15:15:08,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252626080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:15:08,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:15:08,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:15:08,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047386064] [2024-11-13 15:15:08,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:08,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:15:08,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:08,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:15:08,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:15:08,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:08,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:08,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:08,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:08,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:09,511 INFO L124 PetriNetUnfolderBase]: 1780/3037 cut-off events. [2024-11-13 15:15:09,512 INFO L125 PetriNetUnfolderBase]: For 1128/1128 co-relation queries the response was YES. [2024-11-13 15:15:09,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6549 conditions, 3037 events. 1780/3037 cut-off events. For 1128/1128 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17714 event pairs, 1022 based on Foata normal form. 164/2988 useless extension candidates. Maximal degree in co-relation 3291. Up to 1170 conditions per place. [2024-11-13 15:15:09,576 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 61 selfloop transitions, 8 changer transitions 4/82 dead transitions. [2024-11-13 15:15:09,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 82 transitions, 404 flow [2024-11-13 15:15:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:15:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:15:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-11-13 15:15:09,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-11-13 15:15:09,626 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 186 flow. Second operand 6 states and 138 transitions. [2024-11-13 15:15:09,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 82 transitions, 404 flow [2024-11-13 15:15:09,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:15:09,638 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 180 flow [2024-11-13 15:15:09,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-11-13 15:15:09,639 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-11-13 15:15:09,639 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 180 flow [2024-11-13 15:15:09,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:09,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:09,640 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:09,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:15:09,640 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:15:09,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1843321609, now seen corresponding path program 1 times [2024-11-13 15:15:09,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:09,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841922540] [2024-11-13 15:15:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:09,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:15:09,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:09,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841922540] [2024-11-13 15:15:09,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841922540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:15:09,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:15:09,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:15:09,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637985355] [2024-11-13 15:15:09,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:09,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:15:09,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:09,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:15:09,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:15:09,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-13 15:15:09,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:09,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:09,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-13 15:15:09,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:10,377 INFO L124 PetriNetUnfolderBase]: 2362/3861 cut-off events. [2024-11-13 15:15:10,377 INFO L125 PetriNetUnfolderBase]: For 3298/3298 co-relation queries the response was YES. [2024-11-13 15:15:10,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9132 conditions, 3861 events. 2362/3861 cut-off events. For 3298/3298 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 20769 event pairs, 494 based on Foata normal form. 92/3938 useless extension candidates. Maximal degree in co-relation 4953. Up to 2248 conditions per place. [2024-11-13 15:15:10,406 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 65 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-11-13 15:15:10,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 448 flow [2024-11-13 15:15:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:15:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:15:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-13 15:15:10,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-13 15:15:10,407 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 180 flow. Second operand 4 states and 100 transitions. [2024-11-13 15:15:10,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 448 flow [2024-11-13 15:15:10,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 401 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-13 15:15:10,414 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 178 flow [2024-11-13 15:15:10,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-11-13 15:15:10,415 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-11-13 15:15:10,415 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 178 flow [2024-11-13 15:15:10,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:10,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:10,415 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:10,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:15:10,416 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:15:10,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:10,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1904002606, now seen corresponding path program 1 times [2024-11-13 15:15:10,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:10,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849951611] [2024-11-13 15:15:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:10,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:15:10,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:10,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849951611] [2024-11-13 15:15:10,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849951611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989480308] [2024-11-13 15:15:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:10,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:10,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:10,582 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:10,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:15:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:10,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:15:10,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:15:10,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:15:10,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989480308] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:10,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:15:10,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-13 15:15:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176015305] [2024-11-13 15:15:10,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:10,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:15:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:15:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:15:10,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:10,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:10,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:10,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:10,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:11,496 INFO L124 PetriNetUnfolderBase]: 2190/3559 cut-off events. [2024-11-13 15:15:11,497 INFO L125 PetriNetUnfolderBase]: For 1910/1910 co-relation queries the response was YES. [2024-11-13 15:15:11,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8451 conditions, 3559 events. 2190/3559 cut-off events. For 1910/1910 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19394 event pairs, 607 based on Foata normal form. 0/3386 useless extension candidates. Maximal degree in co-relation 4796. Up to 1207 conditions per place. [2024-11-13 15:15:11,524 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 74 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2024-11-13 15:15:11,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 482 flow [2024-11-13 15:15:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:15:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:15:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-11-13 15:15:11,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-11-13 15:15:11,526 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 178 flow. Second operand 6 states and 144 transitions. [2024-11-13 15:15:11,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 482 flow [2024-11-13 15:15:11,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:15:11,530 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 215 flow [2024-11-13 15:15:11,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-11-13 15:15:11,531 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-11-13 15:15:11,532 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 215 flow [2024-11-13 15:15:11,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:11,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:11,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:11,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:15:11,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 15:15:11,733 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:15:11,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2024207313, now seen corresponding path program 1 times [2024-11-13 15:15:11,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:11,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992769706] [2024-11-13 15:15:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:11,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:15:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992769706] [2024-11-13 15:15:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992769706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:15:11,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:15:11,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:15:11,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431595733] [2024-11-13 15:15:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:11,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:15:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:11,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:15:11,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:15:11,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-13 15:15:11,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:11,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:11,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-13 15:15:11,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:12,785 INFO L124 PetriNetUnfolderBase]: 3274/5403 cut-off events. [2024-11-13 15:15:12,785 INFO L125 PetriNetUnfolderBase]: For 3676/3712 co-relation queries the response was YES. [2024-11-13 15:15:12,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13885 conditions, 5403 events. 3274/5403 cut-off events. For 3676/3712 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 32071 event pairs, 1121 based on Foata normal form. 128/5495 useless extension candidates. Maximal degree in co-relation 8024. Up to 2792 conditions per place. [2024-11-13 15:15:12,823 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 92 selfloop transitions, 15 changer transitions 0/118 dead transitions. [2024-11-13 15:15:12,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 118 transitions, 681 flow [2024-11-13 15:15:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:15:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:15:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-11-13 15:15:12,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2024-11-13 15:15:12,826 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 215 flow. Second operand 6 states and 147 transitions. [2024-11-13 15:15:12,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 118 transitions, 681 flow [2024-11-13 15:15:12,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 118 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:15:12,833 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 344 flow [2024-11-13 15:15:12,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-11-13 15:15:12,834 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-11-13 15:15:12,834 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 344 flow [2024-11-13 15:15:12,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:12,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:12,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:12,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:15:12,835 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:15:12,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1015328935, now seen corresponding path program 2 times [2024-11-13 15:15:12,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:12,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914236945] [2024-11-13 15:15:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:12,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:15:12,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:12,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914236945] [2024-11-13 15:15:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914236945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:15:12,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:15:12,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:15:12,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790725290] [2024-11-13 15:15:12,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:12,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:15:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:12,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:15:12,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:15:13,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-13 15:15:13,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:13,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:13,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-13 15:15:13,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:14,148 INFO L124 PetriNetUnfolderBase]: 4202/6994 cut-off events. [2024-11-13 15:15:14,148 INFO L125 PetriNetUnfolderBase]: For 9508/9582 co-relation queries the response was YES. [2024-11-13 15:15:14,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20362 conditions, 6994 events. 4202/6994 cut-off events. For 9508/9582 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 42808 event pairs, 1417 based on Foata normal form. 140/7124 useless extension candidates. Maximal degree in co-relation 12858. Up to 2557 conditions per place. [2024-11-13 15:15:14,208 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 102 selfloop transitions, 13 changer transitions 1/127 dead transitions. [2024-11-13 15:15:14,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 127 transitions, 851 flow [2024-11-13 15:15:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:15:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:15:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-11-13 15:15:14,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-11-13 15:15:14,210 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 344 flow. Second operand 6 states and 144 transitions. [2024-11-13 15:15:14,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 127 transitions, 851 flow [2024-11-13 15:15:14,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 127 transitions, 849 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 15:15:14,230 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 442 flow [2024-11-13 15:15:14,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=442, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-13 15:15:14,232 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-11-13 15:15:14,232 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 442 flow [2024-11-13 15:15:14,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:14,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:14,233 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:14,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:15:14,233 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:15:14,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:14,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1836574229, now seen corresponding path program 3 times [2024-11-13 15:15:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:14,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149174418] [2024-11-13 15:15:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:14,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:15:14,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:14,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149174418] [2024-11-13 15:15:14,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149174418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:15:14,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:15:14,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:15:14,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40331893] [2024-11-13 15:15:14,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:14,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:15:14,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:14,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:15:14,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:15:14,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-13 15:15:14,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:14,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:14,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-13 15:15:14,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:15,658 INFO L124 PetriNetUnfolderBase]: 4453/7454 cut-off events. [2024-11-13 15:15:15,659 INFO L125 PetriNetUnfolderBase]: For 16080/16116 co-relation queries the response was YES. [2024-11-13 15:15:15,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22592 conditions, 7454 events. 4453/7454 cut-off events. For 16080/16116 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 44317 event pairs, 847 based on Foata normal form. 128/7549 useless extension candidates. Maximal degree in co-relation 14241. Up to 3136 conditions per place. [2024-11-13 15:15:15,723 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 91 selfloop transitions, 23 changer transitions 0/125 dead transitions. [2024-11-13 15:15:15,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 125 transitions, 885 flow [2024-11-13 15:15:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:15:15,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:15:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-13 15:15:15,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934959349593496 [2024-11-13 15:15:15,725 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 442 flow. Second operand 6 states and 146 transitions. [2024-11-13 15:15:15,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 125 transitions, 885 flow [2024-11-13 15:15:15,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 873 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-13 15:15:15,756 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 535 flow [2024-11-13 15:15:15,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-11-13 15:15:15,758 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-11-13 15:15:15,759 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 535 flow [2024-11-13 15:15:15,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:15,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:15,759 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:15,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:15:15,760 INFO L396 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)] === [2024-11-13 15:15:15,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash 870604258, now seen corresponding path program 1 times [2024-11-13 15:15:15,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:15,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309314754] [2024-11-13 15:15:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:15,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:15:15,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:15,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309314754] [2024-11-13 15:15:15,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309314754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:15,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101289425] [2024-11-13 15:15:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:15,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:15,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:15,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:15,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:15:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:16,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:15:16,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:15:16,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:15:16,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101289425] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:16,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:15:16,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-13 15:15:16,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658577711] [2024-11-13 15:15:16,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:16,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:15:16,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:16,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:15:16,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:15:16,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:16,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 535 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:16,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:16,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:16,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:17,888 INFO L124 PetriNetUnfolderBase]: 4503/7637 cut-off events. [2024-11-13 15:15:17,888 INFO L125 PetriNetUnfolderBase]: For 18282/18282 co-relation queries the response was YES. [2024-11-13 15:15:17,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23462 conditions, 7637 events. 4503/7637 cut-off events. For 18282/18282 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 46695 event pairs, 1659 based on Foata normal form. 0/7300 useless extension candidates. Maximal degree in co-relation 13906. Up to 2324 conditions per place. [2024-11-13 15:15:17,951 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 87 selfloop transitions, 14 changer transitions 4/124 dead transitions. [2024-11-13 15:15:17,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 124 transitions, 1032 flow [2024-11-13 15:15:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:15:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:15:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-13 15:15:17,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934959349593496 [2024-11-13 15:15:17,957 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 535 flow. Second operand 6 states and 146 transitions. [2024-11-13 15:15:17,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 124 transitions, 1032 flow [2024-11-13 15:15:18,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 124 transitions, 976 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-13 15:15:18,003 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 618 flow [2024-11-13 15:15:18,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=618, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-11-13 15:15:18,004 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-11-13 15:15:18,005 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 618 flow [2024-11-13 15:15:18,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:18,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:18,006 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1] [2024-11-13 15:15:18,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:15:18,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:15:18,210 INFO L396 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)] === [2024-11-13 15:15:18,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash 379327147, now seen corresponding path program 4 times [2024-11-13 15:15:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:18,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554904928] [2024-11-13 15:15:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:18,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 15:15:18,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:18,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554904928] [2024-11-13 15:15:18,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554904928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:15:18,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:15:18,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:15:18,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313448540] [2024-11-13 15:15:18,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:15:18,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:15:18,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:18,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:15:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:15:18,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:18,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 618 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:18,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:18,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:18,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:19,002 INFO L124 PetriNetUnfolderBase]: 2360/3881 cut-off events. [2024-11-13 15:15:19,003 INFO L125 PetriNetUnfolderBase]: For 12101/12190 co-relation queries the response was YES. [2024-11-13 15:15:19,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13441 conditions, 3881 events. 2360/3881 cut-off events. For 12101/12190 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 19767 event pairs, 1668 based on Foata normal form. 41/3804 useless extension candidates. Maximal degree in co-relation 12671. Up to 3045 conditions per place. [2024-11-13 15:15:19,031 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 38 selfloop transitions, 4 changer transitions 24/83 dead transitions. [2024-11-13 15:15:19,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 83 transitions, 683 flow [2024-11-13 15:15:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:15:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:15:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-11-13 15:15:19,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-11-13 15:15:19,035 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 618 flow. Second operand 6 states and 120 transitions. [2024-11-13 15:15:19,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 83 transitions, 683 flow [2024-11-13 15:15:19,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 664 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-13 15:15:19,058 INFO L231 Difference]: Finished difference. Result has 91 places, 59 transitions, 410 flow [2024-11-13 15:15:19,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=91, PETRI_TRANSITIONS=59} [2024-11-13 15:15:19,061 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-11-13 15:15:19,061 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 59 transitions, 410 flow [2024-11-13 15:15:19,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:19,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:19,062 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:19,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:15:19,062 INFO L396 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)] === [2024-11-13 15:15:19,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:19,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1256863183, now seen corresponding path program 1 times [2024-11-13 15:15:19,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:19,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928922925] [2024-11-13 15:15:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:19,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:15:19,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928922925] [2024-11-13 15:15:19,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928922925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935075904] [2024-11-13 15:15:19,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:19,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:19,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:19,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:19,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:15:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:19,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:15:19,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:15:19,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:15:19,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935075904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:19,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:15:19,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-13 15:15:19,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553984788] [2024-11-13 15:15:19,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:19,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:15:19,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:15:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:15:19,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:19,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 59 transitions, 410 flow. Second operand has 14 states, 14 states have (on average 15.428571428571429) internal successors, (216), 14 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:19,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:19,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:19,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:20,699 INFO L124 PetriNetUnfolderBase]: 2881/4798 cut-off events. [2024-11-13 15:15:20,700 INFO L125 PetriNetUnfolderBase]: For 14612/14701 co-relation queries the response was YES. [2024-11-13 15:15:20,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16358 conditions, 4798 events. 2881/4798 cut-off events. For 14612/14701 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 26193 event pairs, 1783 based on Foata normal form. 54/4735 useless extension candidates. Maximal degree in co-relation 15593. Up to 3031 conditions per place. [2024-11-13 15:15:20,734 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 38 selfloop transitions, 6 changer transitions 50/111 dead transitions. [2024-11-13 15:15:20,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 914 flow [2024-11-13 15:15:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:15:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:15:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-11-13 15:15:20,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-11-13 15:15:20,736 INFO L175 Difference]: Start difference. First operand has 91 places, 59 transitions, 410 flow. Second operand 10 states and 188 transitions. [2024-11-13 15:15:20,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 914 flow [2024-11-13 15:15:20,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 111 transitions, 863 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-13 15:15:20,791 INFO L231 Difference]: Finished difference. Result has 90 places, 61 transitions, 433 flow [2024-11-13 15:15:20,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=433, PETRI_PLACES=90, PETRI_TRANSITIONS=61} [2024-11-13 15:15:20,792 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-11-13 15:15:20,793 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 61 transitions, 433 flow [2024-11-13 15:15:20,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.428571428571429) internal successors, (216), 14 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:20,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:20,793 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:20,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 15:15:20,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:15:20,994 INFO L396 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)] === [2024-11-13 15:15:20,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:20,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1079974223, now seen corresponding path program 2 times [2024-11-13 15:15:20,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:20,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919371995] [2024-11-13 15:15:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:20,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:15:21,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:21,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919371995] [2024-11-13 15:15:21,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919371995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:21,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37460557] [2024-11-13 15:15:21,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:15:21,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:21,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:21,210 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:21,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:15:21,356 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:15:21,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:15:21,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:15:21,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:15:21,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:15:21,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37460557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:21,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:15:21,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-13 15:15:21,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98854001] [2024-11-13 15:15:21,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:21,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:15:21,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:21,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:15:21,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:15:21,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:21,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 61 transitions, 433 flow. Second operand has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:21,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:21,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:21,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:22,549 INFO L124 PetriNetUnfolderBase]: 3583/5806 cut-off events. [2024-11-13 15:15:22,549 INFO L125 PetriNetUnfolderBase]: For 18410/18652 co-relation queries the response was YES. [2024-11-13 15:15:22,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20294 conditions, 5806 events. 3583/5806 cut-off events. For 18410/18652 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 33109 event pairs, 945 based on Foata normal form. 145/5712 useless extension candidates. Maximal degree in co-relation 20238. Up to 1568 conditions per place. [2024-11-13 15:15:22,589 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 110 selfloop transitions, 11 changer transitions 0/138 dead transitions. [2024-11-13 15:15:22,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 138 transitions, 1334 flow [2024-11-13 15:15:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:15:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:15:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-11-13 15:15:22,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-11-13 15:15:22,591 INFO L175 Difference]: Start difference. First operand has 90 places, 61 transitions, 433 flow. Second operand 10 states and 191 transitions. [2024-11-13 15:15:22,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 138 transitions, 1334 flow [2024-11-13 15:15:22,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 138 transitions, 1262 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-11-13 15:15:22,623 INFO L231 Difference]: Finished difference. Result has 89 places, 64 transitions, 455 flow [2024-11-13 15:15:22,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=455, PETRI_PLACES=89, PETRI_TRANSITIONS=64} [2024-11-13 15:15:22,625 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-11-13 15:15:22,625 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 64 transitions, 455 flow [2024-11-13 15:15:22,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:22,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:22,626 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1] [2024-11-13 15:15:22,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:15:22,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 15:15:22,827 INFO L396 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)] === [2024-11-13 15:15:22,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash -609354225, now seen corresponding path program 3 times [2024-11-13 15:15:22,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:22,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532194674] [2024-11-13 15:15:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:22,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:15:23,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:23,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532194674] [2024-11-13 15:15:23,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532194674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:23,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665586864] [2024-11-13 15:15:23,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:15:23,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:23,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:23,084 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:23,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:15:23,216 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 15:15:23,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:15:23,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:15:23,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:15:23,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:15:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665586864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:23,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:15:23,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-13 15:15:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987282559] [2024-11-13 15:15:23,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:23,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:15:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:23,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:15:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:15:23,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:23,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 64 transitions, 455 flow. Second operand has 14 states, 14 states have (on average 15.5) internal successors, (217), 14 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:23,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:23,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:23,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:25,002 INFO L124 PetriNetUnfolderBase]: 4784/7912 cut-off events. [2024-11-13 15:15:25,002 INFO L125 PetriNetUnfolderBase]: For 24716/24716 co-relation queries the response was YES. [2024-11-13 15:15:25,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27535 conditions, 7912 events. 4784/7912 cut-off events. For 24716/24716 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 46838 event pairs, 1140 based on Foata normal form. 86/7903 useless extension candidates. Maximal degree in co-relation 27480. Up to 2901 conditions per place. [2024-11-13 15:15:25,046 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 76 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2024-11-13 15:15:25,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 109 transitions, 885 flow [2024-11-13 15:15:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:15:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:15:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-11-13 15:15:25,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44878048780487806 [2024-11-13 15:15:25,048 INFO L175 Difference]: Start difference. First operand has 89 places, 64 transitions, 455 flow. Second operand 10 states and 184 transitions. [2024-11-13 15:15:25,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 109 transitions, 885 flow [2024-11-13 15:15:25,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 109 transitions, 874 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-13 15:15:25,070 INFO L231 Difference]: Finished difference. Result has 96 places, 66 transitions, 503 flow [2024-11-13 15:15:25,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=503, PETRI_PLACES=96, PETRI_TRANSITIONS=66} [2024-11-13 15:15:25,070 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2024-11-13 15:15:25,071 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 66 transitions, 503 flow [2024-11-13 15:15:25,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.5) internal successors, (217), 14 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:25,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:25,071 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 15:15:25,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:15:25,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 15:15:25,272 INFO L396 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)] === [2024-11-13 15:15:25,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:25,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1691438714, now seen corresponding path program 4 times [2024-11-13 15:15:25,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:25,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832785001] [2024-11-13 15:15:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:25,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:15:25,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:25,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832785001] [2024-11-13 15:15:25,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832785001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:25,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290866451] [2024-11-13 15:15:25,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:15:25,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:25,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:25,439 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:25,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:15:25,629 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:15:25,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:15:25,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:15:25,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:15:25,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:15:25,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290866451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:25,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:15:25,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-13 15:15:25,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731378365] [2024-11-13 15:15:25,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:25,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:15:25,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:25,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:15:25,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:15:25,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-11-13 15:15:25,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 66 transitions, 503 flow. Second operand has 13 states, 13 states have (on average 13.615384615384615) internal successors, (177), 13 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:25,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:25,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-11-13 15:15:25,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:29,033 INFO L124 PetriNetUnfolderBase]: 10681/17219 cut-off events. [2024-11-13 15:15:29,033 INFO L125 PetriNetUnfolderBase]: For 66161/66195 co-relation queries the response was YES. [2024-11-13 15:15:29,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61591 conditions, 17219 events. 10681/17219 cut-off events. For 66161/66195 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 113215 event pairs, 2503 based on Foata normal form. 634/17783 useless extension candidates. Maximal degree in co-relation 61534. Up to 5119 conditions per place. [2024-11-13 15:15:29,177 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 277 selfloop transitions, 51 changer transitions 10/349 dead transitions. [2024-11-13 15:15:29,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 349 transitions, 2902 flow [2024-11-13 15:15:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:15:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-13 15:15:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 484 transitions. [2024-11-13 15:15:29,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2024-11-13 15:15:29,183 INFO L175 Difference]: Start difference. First operand has 96 places, 66 transitions, 503 flow. Second operand 22 states and 484 transitions. [2024-11-13 15:15:29,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 349 transitions, 2902 flow [2024-11-13 15:15:29,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 349 transitions, 2847 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-13 15:15:29,545 INFO L231 Difference]: Finished difference. Result has 130 places, 108 transitions, 1043 flow [2024-11-13 15:15:29,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1043, PETRI_PLACES=130, PETRI_TRANSITIONS=108} [2024-11-13 15:15:29,546 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-11-13 15:15:29,546 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 108 transitions, 1043 flow [2024-11-13 15:15:29,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.615384615384615) internal successors, (177), 13 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:29,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:29,547 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 15:15:29,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:15:29,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:15:29,751 INFO L396 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)] === [2024-11-13 15:15:29,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:29,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1043593342, now seen corresponding path program 5 times [2024-11-13 15:15:29,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:29,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874183133] [2024-11-13 15:15:29,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:29,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 15:15:29,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:29,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874183133] [2024-11-13 15:15:29,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874183133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:29,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808424761] [2024-11-13 15:15:29,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:15:29,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:29,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:29,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:29,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:15:30,079 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 15:15:30,079 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:15:30,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:15:30,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 15:15:30,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 15:15:30,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808424761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:30,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:15:30,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 15:15:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474527972] [2024-11-13 15:15:30,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:30,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:15:30,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:30,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:15:30,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:15:30,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-11-13 15:15:30,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 108 transitions, 1043 flow. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:30,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:30,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-11-13 15:15:30,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:33,470 INFO L124 PetriNetUnfolderBase]: 11483/18553 cut-off events. [2024-11-13 15:15:33,470 INFO L125 PetriNetUnfolderBase]: For 220694/220898 co-relation queries the response was YES. [2024-11-13 15:15:33,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92070 conditions, 18553 events. 11483/18553 cut-off events. For 220694/220898 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 121468 event pairs, 1037 based on Foata normal form. 307/18779 useless extension candidates. Maximal degree in co-relation 91999. Up to 6515 conditions per place. [2024-11-13 15:15:33,644 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 189 selfloop transitions, 59 changer transitions 10/269 dead transitions. [2024-11-13 15:15:33,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 269 transitions, 2711 flow [2024-11-13 15:15:33,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:15:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:15:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 308 transitions. [2024-11-13 15:15:33,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2024-11-13 15:15:33,646 INFO L175 Difference]: Start difference. First operand has 130 places, 108 transitions, 1043 flow. Second operand 14 states and 308 transitions. [2024-11-13 15:15:33,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 269 transitions, 2711 flow [2024-11-13 15:15:34,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 269 transitions, 2615 flow, removed 48 selfloop flow, removed 0 redundant places. [2024-11-13 15:15:34,161 INFO L231 Difference]: Finished difference. Result has 150 places, 123 transitions, 1328 flow [2024-11-13 15:15:34,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1328, PETRI_PLACES=150, PETRI_TRANSITIONS=123} [2024-11-13 15:15:34,162 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-11-13 15:15:34,163 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 123 transitions, 1328 flow [2024-11-13 15:15:34,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:34,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:34,163 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2024-11-13 15:15:34,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:15:34,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:15:34,364 INFO L396 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)] === [2024-11-13 15:15:34,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1955172710, now seen corresponding path program 6 times [2024-11-13 15:15:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:34,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860779190] [2024-11-13 15:15:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:34,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:15:34,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:34,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860779190] [2024-11-13 15:15:34,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860779190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:34,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172780326] [2024-11-13 15:15:34,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:15:34,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:34,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:34,632 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:34,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:15:34,800 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 15:15:34,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:15:34,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:15:34,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:15:35,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:15:35,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172780326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:35,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:15:35,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-13 15:15:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431406763] [2024-11-13 15:15:35,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:35,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:15:35,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:15:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:15:35,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:35,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 123 transitions, 1328 flow. Second operand has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 19 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:35,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:35,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:35,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:39,140 INFO L124 PetriNetUnfolderBase]: 12096/21411 cut-off events. [2024-11-13 15:15:39,140 INFO L125 PetriNetUnfolderBase]: For 227946/228717 co-relation queries the response was YES. [2024-11-13 15:15:39,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105574 conditions, 21411 events. 12096/21411 cut-off events. For 227946/228717 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 163057 event pairs, 6974 based on Foata normal form. 363/21227 useless extension candidates. Maximal degree in co-relation 96148. Up to 11333 conditions per place. [2024-11-13 15:15:39,327 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 67 selfloop transitions, 8 changer transitions 96/221 dead transitions. [2024-11-13 15:15:39,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 221 transitions, 2575 flow [2024-11-13 15:15:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:15:39,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:15:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 243 transitions. [2024-11-13 15:15:39,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45590994371482174 [2024-11-13 15:15:39,329 INFO L175 Difference]: Start difference. First operand has 150 places, 123 transitions, 1328 flow. Second operand 13 states and 243 transitions. [2024-11-13 15:15:39,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 221 transitions, 2575 flow [2024-11-13 15:15:40,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 221 transitions, 2500 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-11-13 15:15:40,273 INFO L231 Difference]: Finished difference. Result has 164 places, 125 transitions, 1355 flow [2024-11-13 15:15:40,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1355, PETRI_PLACES=164, PETRI_TRANSITIONS=125} [2024-11-13 15:15:40,273 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-11-13 15:15:40,273 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 125 transitions, 1355 flow [2024-11-13 15:15:40,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 19 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:40,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:40,274 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2024-11-13 15:15:40,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 15:15:40,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:15:40,474 INFO L396 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)] === [2024-11-13 15:15:40,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:40,475 INFO L85 PathProgramCache]: Analyzing trace with hash 295351526, now seen corresponding path program 7 times [2024-11-13 15:15:40,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:40,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292378762] [2024-11-13 15:15:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:40,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 15:15:40,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:40,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292378762] [2024-11-13 15:15:40,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292378762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:40,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477923581] [2024-11-13 15:15:40,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:15:40,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:40,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:40,682 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:40,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:15:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:40,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:15:40,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 15:15:41,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 15:15:41,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477923581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:41,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:15:41,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-13 15:15:41,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948274366] [2024-11-13 15:15:41,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:41,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:15:41,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:41,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:15:41,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:15:41,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:41,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 125 transitions, 1355 flow. Second operand has 19 states, 19 states have (on average 14.631578947368421) internal successors, (278), 19 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:41,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:41,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:41,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:44,978 INFO L124 PetriNetUnfolderBase]: 11914/18879 cut-off events. [2024-11-13 15:15:44,979 INFO L125 PetriNetUnfolderBase]: For 158546/160491 co-relation queries the response was YES. [2024-11-13 15:15:45,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87516 conditions, 18879 events. 11914/18879 cut-off events. For 158546/160491 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 131828 event pairs, 2302 based on Foata normal form. 496/18435 useless extension candidates. Maximal degree in co-relation 87420. Up to 4016 conditions per place. [2024-11-13 15:15:45,182 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 271 selfloop transitions, 14 changer transitions 0/334 dead transitions. [2024-11-13 15:15:45,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 334 transitions, 4709 flow [2024-11-13 15:15:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:15:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:15:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 243 transitions. [2024-11-13 15:15:45,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45590994371482174 [2024-11-13 15:15:45,184 INFO L175 Difference]: Start difference. First operand has 164 places, 125 transitions, 1355 flow. Second operand 13 states and 243 transitions. [2024-11-13 15:15:45,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 334 transitions, 4709 flow [2024-11-13 15:15:45,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 334 transitions, 4458 flow, removed 113 selfloop flow, removed 10 redundant places. [2024-11-13 15:15:45,403 INFO L231 Difference]: Finished difference. Result has 160 places, 127 transitions, 1337 flow [2024-11-13 15:15:45,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1337, PETRI_PLACES=160, PETRI_TRANSITIONS=127} [2024-11-13 15:15:45,403 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-11-13 15:15:45,403 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 127 transitions, 1337 flow [2024-11-13 15:15:45,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.631578947368421) internal successors, (278), 19 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:45,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:45,404 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 15:15:45,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:15:45,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:15:45,604 INFO L396 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)] === [2024-11-13 15:15:45,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1461974322, now seen corresponding path program 8 times [2024-11-13 15:15:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:45,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714106326] [2024-11-13 15:15:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:45,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 15:15:45,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:45,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714106326] [2024-11-13 15:15:45,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714106326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:45,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405895186] [2024-11-13 15:15:45,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:15:45,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:45,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:45,810 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:45,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:15:46,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:15:46,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:15:46,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:15:46,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 15:15:46,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 15:15:46,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405895186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:46,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:15:46,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-13 15:15:46,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072955612] [2024-11-13 15:15:46,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:46,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:15:46,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:15:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:15:46,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-13 15:15:46,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 127 transitions, 1337 flow. Second operand has 19 states, 19 states have (on average 14.631578947368421) internal successors, (278), 19 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:46,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:46,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-13 15:15:46,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:50,988 INFO L124 PetriNetUnfolderBase]: 16223/26156 cut-off events. [2024-11-13 15:15:50,989 INFO L125 PetriNetUnfolderBase]: For 257044/257342 co-relation queries the response was YES. [2024-11-13 15:15:51,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128309 conditions, 26156 events. 16223/26156 cut-off events. For 257044/257342 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 177336 event pairs, 2290 based on Foata normal form. 237/25937 useless extension candidates. Maximal degree in co-relation 128219. Up to 7709 conditions per place. [2024-11-13 15:15:51,252 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 118 selfloop transitions, 27 changer transitions 0/195 dead transitions. [2024-11-13 15:15:51,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 195 transitions, 2137 flow [2024-11-13 15:15:51,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:15:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:15:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2024-11-13 15:15:51,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4371482176360225 [2024-11-13 15:15:51,254 INFO L175 Difference]: Start difference. First operand has 160 places, 127 transitions, 1337 flow. Second operand 13 states and 233 transitions. [2024-11-13 15:15:51,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 195 transitions, 2137 flow [2024-11-13 15:15:52,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 195 transitions, 2098 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-13 15:15:52,150 INFO L231 Difference]: Finished difference. Result has 166 places, 129 transitions, 1405 flow [2024-11-13 15:15:52,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1405, PETRI_PLACES=166, PETRI_TRANSITIONS=129} [2024-11-13 15:15:52,151 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-11-13 15:15:52,151 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 129 transitions, 1405 flow [2024-11-13 15:15:52,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.631578947368421) internal successors, (278), 19 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:52,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:52,151 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 15:15:52,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:15:52,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:52,352 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:15:52,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash -791189513, now seen corresponding path program 9 times [2024-11-13 15:15:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:52,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735638774] [2024-11-13 15:15:52,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:52,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:15:52,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:52,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735638774] [2024-11-13 15:15:52,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735638774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:52,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798831617] [2024-11-13 15:15:52,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:15:52,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:52,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:52,525 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:52,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:15:52,655 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 15:15:52,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:15:52,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:15:52,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-13 15:15:52,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-13 15:15:52,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798831617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:52,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:15:52,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2024-11-13 15:15:52,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267165682] [2024-11-13 15:15:52,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:52,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:15:52,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:15:52,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:15:52,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-11-13 15:15:52,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 129 transitions, 1405 flow. Second operand has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:52,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:52,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-11-13 15:15:52,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:16:03,725 INFO L124 PetriNetUnfolderBase]: 36248/52836 cut-off events. [2024-11-13 15:16:03,726 INFO L125 PetriNetUnfolderBase]: For 508752/508920 co-relation queries the response was YES. [2024-11-13 15:16:04,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254765 conditions, 52836 events. 36248/52836 cut-off events. For 508752/508920 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 334762 event pairs, 457 based on Foata normal form. 443/53021 useless extension candidates. Maximal degree in co-relation 254674. Up to 7205 conditions per place. [2024-11-13 15:16:04,053 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 0 selfloop transitions, 0 changer transitions 1214/1214 dead transitions. [2024-11-13 15:16:04,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 1214 transitions, 12961 flow [2024-11-13 15:16:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-13 15:16:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2024-11-13 15:16:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 1456 transitions. [2024-11-13 15:16:04,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4330755502676978 [2024-11-13 15:16:04,058 INFO L175 Difference]: Start difference. First operand has 166 places, 129 transitions, 1405 flow. Second operand 82 states and 1456 transitions. [2024-11-13 15:16:04,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 1214 transitions, 12961 flow [2024-11-13 15:16:05,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 1214 transitions, 12778 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-13 15:16:05,477 INFO L231 Difference]: Finished difference. Result has 231 places, 0 transitions, 0 flow [2024-11-13 15:16:05,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=0, PETRI_PLACES=231, PETRI_TRANSITIONS=0} [2024-11-13 15:16:05,478 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-11-13 15:16:05,478 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 0 transitions, 0 flow [2024-11-13 15:16:05,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:16:05,480 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-13 15:16:05,481 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-13 15:16:05,481 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-13 15:16:05,481 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-13 15:16:05,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 15:16:05,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:05,682 INFO L407 BasicCegarLoop]: Path program histogram: [9, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:16:05,685 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 15:16:05,685 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:16:05,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:16:05 BasicIcfg [2024-11-13 15:16:05,691 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:16:05,691 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:16:05,691 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:16:05,691 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:16:05,692 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:15:03" (3/4) ... [2024-11-13 15:16:05,694 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 15:16:05,696 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-13 15:16:05,696 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-13 15:16:05,696 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-13 15:16:05,702 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 106 nodes and edges [2024-11-13 15:16:05,703 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2024-11-13 15:16:05,703 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-13 15:16:05,703 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 15:16:05,785 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 15:16:05,786 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 15:16:05,786 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:16:05,787 INFO L158 Benchmark]: Toolchain (without parser) took 64286.71ms. Allocated memory was 117.4MB in the beginning and 10.9GB in the end (delta: 10.7GB). Free memory was 93.3MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2024-11-13 15:16:05,787 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:16:05,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.06ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 81.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:16:05,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.55ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 79.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:16:05,788 INFO L158 Benchmark]: Boogie Preprocessor took 57.83ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 77.8MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:16:05,788 INFO L158 Benchmark]: RCFGBuilder took 1037.40ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 39.1MB in the end (delta: 38.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 15:16:05,788 INFO L158 Benchmark]: TraceAbstraction took 62653.01ms. Allocated memory was 117.4MB in the beginning and 10.9GB in the end (delta: 10.7GB). Free memory was 38.4MB in the beginning and 8.3GB in the end (delta: -8.3GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2024-11-13 15:16:05,789 INFO L158 Benchmark]: Witness Printer took 94.99ms. Allocated memory is still 10.9GB. Free memory was 8.3GB in the beginning and 8.3GB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:16:05,791 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.06ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 81.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.55ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 79.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.83ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 77.8MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1037.40ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 39.1MB in the end (delta: 38.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 62653.01ms. Allocated memory was 117.4MB in the beginning and 10.9GB in the end (delta: 10.7GB). Free memory was 38.4MB in the beginning and 8.3GB in the end (delta: -8.3GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 94.99ms. Allocated memory is still 10.9GB. Free memory was 8.3GB in the beginning and 8.3GB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 94]: 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, 59 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: 62.4s, OverallIterations: 20, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 48.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2430 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2327 mSDsluCounter, 186 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6954 IncrementalHoareTripleChecker+Invalid, 7078 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 32 mSDtfsCounter, 6954 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1489 GetRequests, 1171 SyntacticMatches, 25 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3887 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1405occurred in iteration=19, InterpolantAutomatonStates: 248, 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: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 1368 NumberOfCodeBlocks, 1331 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 1907 ConstructedInterpolants, 0 QuantifiedInterpolants, 6149 SizeOfPredicates, 39 NumberOfNonLiveVariables, 3173 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 46 InterpolantComputations, 11 PerfectInterpolantSequences, 696/944 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! [2024-11-13 15:16:05,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41d4c18-a83d-416e-80b3-cfc4b568138a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE