./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX --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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:53:45,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:53:45,693 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:53:45,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:53:45,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:53:45,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:53:45,727 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:53:45,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:53:45,728 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:53:45,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:53:45,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:53:45,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:53:45,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:53:45,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:53:45,732 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:53:45,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:53:45,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:53:45,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:53:45,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:53:45,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:53:45,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:53:45,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:53:45,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:53:45,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:53:45,743 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:53:45,743 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:53:45,743 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:53:45,743 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:53:45,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:53:45,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:53:45,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:53:45,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:53:45,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:53:45,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:53:45,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:53:45,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:53:45,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:53:45,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:53:45,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:53:45,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:53:45,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:53:45,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:53:45,761 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2024-11-08 16:53:46,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:53:46,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:53:46,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:53:46,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:53:46,126 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:53:46,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c Unable to find full path for "g++" [2024-11-08 16:53:48,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:53:48,578 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:53:48,579 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-11-08 16:53:48,589 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/data/72860a343/c874a8e25f1f4d2d812561ceff3b7843/FLAGa235d7b88 [2024-11-08 16:53:48,930 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/data/72860a343/c874a8e25f1f4d2d812561ceff3b7843 [2024-11-08 16:53:48,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:53:48,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:53:48,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:53:48,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:53:48,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:53:48,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:53:48" (1/1) ... [2024-11-08 16:53:48,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb3cc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:48, skipping insertion in model container [2024-11-08 16:53:48,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:53:48" (1/1) ... [2024-11-08 16:53:48,994 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:53:49,241 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_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-11-08 16:53:49,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:53:49,268 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:53:49,296 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_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-11-08 16:53:49,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:53:49,321 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:53:49,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49 WrapperNode [2024-11-08 16:53:49,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:53:49,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:53:49,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:53:49,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:53:49,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,378 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 165 [2024-11-08 16:53:49,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:53:49,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:53:49,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:53:49,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:53:49,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,404 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,433 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 16:53:49,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,449 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:53:49,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:53:49,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:53:49,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:53:49,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (1/1) ... [2024-11-08 16:53:49,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:53:49,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:53:49,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:53:49,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:53:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:53:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:53:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:53:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:53:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:53:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:53:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:53:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:53:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:53:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:53:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:53:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:53:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:53:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:53:49,550 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:53:49,678 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:53:49,681 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:53:50,124 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:53:50,125 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:53:50,523 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:53:50,524 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:53:50,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:53:50 BoogieIcfgContainer [2024-11-08 16:53:50,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:53:50,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:53:50,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:53:50,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:53:50,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:53:48" (1/3) ... [2024-11-08 16:53:50,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2a195b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:53:50, skipping insertion in model container [2024-11-08 16:53:50,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:49" (2/3) ... [2024-11-08 16:53:50,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2a195b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:53:50, skipping insertion in model container [2024-11-08 16:53:50,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:53:50" (3/3) ... [2024-11-08 16:53:50,542 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2024-11-08 16:53:50,563 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:53:50,564 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:53:50,564 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:53:50,633 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:53:50,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 38 transitions, 90 flow [2024-11-08 16:53:50,718 INFO L124 PetriNetUnfolderBase]: 10/36 cut-off events. [2024-11-08 16:53:50,719 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:53:50,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 10/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 23. Up to 3 conditions per place. [2024-11-08 16:53:50,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 38 transitions, 90 flow [2024-11-08 16:53:50,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 35 transitions, 82 flow [2024-11-08 16:53:50,741 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:53:50,749 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;@5094544d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:53:50,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-08 16:53:50,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:53:50,769 INFO L124 PetriNetUnfolderBase]: 10/34 cut-off events. [2024-11-08 16:53:50,769 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:53:50,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:53:50,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:53:50,771 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:53:50,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:50,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1503016808, now seen corresponding path program 1 times [2024-11-08 16:53:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:50,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255235991] [2024-11-08 16:53:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:50,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:53:51,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:51,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255235991] [2024-11-08 16:53:51,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255235991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:53:51,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:53:51,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:53:51,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642514210] [2024-11-08 16:53:51,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:53:51,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:53:51,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:53:51,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:53:51,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-08 16:53:51,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 82 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) [2024-11-08 16:53:51,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:53:51,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-08 16:53:51,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:53:51,682 INFO L124 PetriNetUnfolderBase]: 298/487 cut-off events. [2024-11-08 16:53:51,682 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-08 16:53:51,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 487 events. 298/487 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1902 event pairs, 82 based on Foata normal form. 5/384 useless extension candidates. Maximal degree in co-relation 888. Up to 220 conditions per place. [2024-11-08 16:53:51,690 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 46 selfloop transitions, 6 changer transitions 2/64 dead transitions. [2024-11-08 16:53:51,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 64 transitions, 266 flow [2024-11-08 16:53:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:53:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:53:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-08 16:53:51,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-08 16:53:51,710 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 82 flow. Second operand 5 states and 115 transitions. [2024-11-08 16:53:51,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 64 transitions, 266 flow [2024-11-08 16:53:51,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 64 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 16:53:51,719 INFO L231 Difference]: Finished difference. Result has 34 places, 38 transitions, 106 flow [2024-11-08 16:53:51,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=34, PETRI_TRANSITIONS=38} [2024-11-08 16:53:51,726 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2024-11-08 16:53:51,726 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 38 transitions, 106 flow [2024-11-08 16:53:51,726 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) [2024-11-08 16:53:51,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:53:51,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:53:51,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:53:51,727 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:53:51,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:51,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1639273974, now seen corresponding path program 2 times [2024-11-08 16:53:51,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:51,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193761064] [2024-11-08 16:53:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:51,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:53:51,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:51,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193761064] [2024-11-08 16:53:51,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193761064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:53:51,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:53:51,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:53:51,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438870428] [2024-11-08 16:53:51,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:53:51,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:53:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:53:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:53:51,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-08 16:53:51,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 38 transitions, 106 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) [2024-11-08 16:53:51,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:53:51,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-08 16:53:51,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:53:52,301 INFO L124 PetriNetUnfolderBase]: 544/909 cut-off events. [2024-11-08 16:53:52,301 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-08 16:53:52,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 909 events. 544/909 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4089 event pairs, 189 based on Foata normal form. 4/773 useless extension candidates. Maximal degree in co-relation 617. Up to 431 conditions per place. [2024-11-08 16:53:52,318 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 47 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2024-11-08 16:53:52,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 65 transitions, 283 flow [2024-11-08 16:53:52,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:53:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:53:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-08 16:53:52,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5842105263157895 [2024-11-08 16:53:52,324 INFO L175 Difference]: Start difference. First operand has 34 places, 38 transitions, 106 flow. Second operand 5 states and 111 transitions. [2024-11-08 16:53:52,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 65 transitions, 283 flow [2024-11-08 16:53:52,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 65 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:53:52,332 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 132 flow [2024-11-08 16:53:52,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2024-11-08 16:53:52,335 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2024-11-08 16:53:52,335 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 132 flow [2024-11-08 16:53:52,335 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) [2024-11-08 16:53:52,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:53:52,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:53:52,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:53:52,337 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:53:52,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:52,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1183518964, now seen corresponding path program 3 times [2024-11-08 16:53:52,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:52,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081952093] [2024-11-08 16:53:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:52,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:53:52,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:52,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081952093] [2024-11-08 16:53:52,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081952093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:53:52,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:53:52,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:53:52,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969219639] [2024-11-08 16:53:52,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:53:52,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:53:52,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:52,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:53:52,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:53:52,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-08 16:53:52,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 132 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) [2024-11-08 16:53:52,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:53:52,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-08 16:53:52,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:53:52,786 INFO L124 PetriNetUnfolderBase]: 542/941 cut-off events. [2024-11-08 16:53:52,786 INFO L125 PetriNetUnfolderBase]: For 409/409 co-relation queries the response was YES. [2024-11-08 16:53:52,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 941 events. 542/941 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4408 event pairs, 185 based on Foata normal form. 38/969 useless extension candidates. Maximal degree in co-relation 687. Up to 392 conditions per place. [2024-11-08 16:53:52,795 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 54 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-11-08 16:53:52,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 70 transitions, 328 flow [2024-11-08 16:53:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:53:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:53:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-08 16:53:52,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6907894736842105 [2024-11-08 16:53:52,798 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 132 flow. Second operand 4 states and 105 transitions. [2024-11-08 16:53:52,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 70 transitions, 328 flow [2024-11-08 16:53:52,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:53:52,801 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 148 flow [2024-11-08 16:53:52,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-11-08 16:53:52,803 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2024-11-08 16:53:52,803 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 148 flow [2024-11-08 16:53:52,804 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) [2024-11-08 16:53:52,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:53:52,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:53:52,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:53:52,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:53:52,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:52,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1672902552, now seen corresponding path program 4 times [2024-11-08 16:53:52,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:52,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114067059] [2024-11-08 16:53:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:53:52,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:52,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114067059] [2024-11-08 16:53:52,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114067059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:53:52,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:53:52,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:53:52,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611114470] [2024-11-08 16:53:52,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:53:52,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:53:52,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:52,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:53:52,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:53:52,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-08 16:53:52,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 148 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) [2024-11-08 16:53:52,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:53:52,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-08 16:53:52,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:53:53,230 INFO L124 PetriNetUnfolderBase]: 601/1053 cut-off events. [2024-11-08 16:53:53,232 INFO L125 PetriNetUnfolderBase]: For 571/571 co-relation queries the response was YES. [2024-11-08 16:53:53,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2572 conditions, 1053 events. 601/1053 cut-off events. For 571/571 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5065 event pairs, 171 based on Foata normal form. 18/1069 useless extension candidates. Maximal degree in co-relation 1444. Up to 645 conditions per place. [2024-11-08 16:53:53,241 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 43 selfloop transitions, 5 changer transitions 3/63 dead transitions. [2024-11-08 16:53:53,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 322 flow [2024-11-08 16:53:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:53:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:53:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-08 16:53:53,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-08 16:53:53,246 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 148 flow. Second operand 4 states and 96 transitions. [2024-11-08 16:53:53,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 322 flow [2024-11-08 16:53:53,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 314 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-08 16:53:53,254 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 190 flow [2024-11-08 16:53:53,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-08 16:53:53,256 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2024-11-08 16:53:53,257 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 190 flow [2024-11-08 16:53:53,258 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) [2024-11-08 16:53:53,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:53:53,258 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] [2024-11-08 16:53:53,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:53:53,259 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:53:53,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:53,260 INFO L85 PathProgramCache]: Analyzing trace with hash -178951679, now seen corresponding path program 1 times [2024-11-08 16:53:53,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:53,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223539191] [2024-11-08 16:53:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:53,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:53:53,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:53,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223539191] [2024-11-08 16:53:53,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223539191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:53:53,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:53:53,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:53:53,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389948838] [2024-11-08 16:53:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:53:53,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:53:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:53:53,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:53:53,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-08 16:53:53,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-11-08 16:53:53,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:53:53,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-08 16:53:53,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:53:53,722 INFO L124 PetriNetUnfolderBase]: 734/1235 cut-off events. [2024-11-08 16:53:53,723 INFO L125 PetriNetUnfolderBase]: For 1008/1008 co-relation queries the response was YES. [2024-11-08 16:53:53,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3098 conditions, 1235 events. 734/1235 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5816 event pairs, 210 based on Foata normal form. 38/1249 useless extension candidates. Maximal degree in co-relation 2991. Up to 878 conditions per place. [2024-11-08 16:53:53,734 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 46 selfloop transitions, 6 changer transitions 2/66 dead transitions. [2024-11-08 16:53:53,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 367 flow [2024-11-08 16:53:53,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:53:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:53:53,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-08 16:53:53,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-08 16:53:53,736 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 190 flow. Second operand 4 states and 96 transitions. [2024-11-08 16:53:53,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 367 flow [2024-11-08 16:53:53,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 353 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 16:53:53,746 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 224 flow [2024-11-08 16:53:53,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2024-11-08 16:53:53,747 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2024-11-08 16:53:53,747 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 224 flow [2024-11-08 16:53:53,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-11-08 16:53:53,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:53:53,748 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] [2024-11-08 16:53:53,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:53:53,749 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:53:53,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:53,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1215831455, now seen corresponding path program 2 times [2024-11-08 16:53:53,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:53,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847783849] [2024-11-08 16:53:53,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:53,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:53:53,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847783849] [2024-11-08 16:53:53,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847783849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:53:53,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:53:53,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:53:53,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729543102] [2024-11-08 16:53:53,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:53:53,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:53:53,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:53:53,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:53:53,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-08 16:53:53,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-11-08 16:53:53,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:53:53,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-08 16:53:53,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:53:54,213 INFO L124 PetriNetUnfolderBase]: 648/1093 cut-off events. [2024-11-08 16:53:54,213 INFO L125 PetriNetUnfolderBase]: For 1274/1276 co-relation queries the response was YES. [2024-11-08 16:53:54,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1093 events. 648/1093 cut-off events. For 1274/1276 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4988 event pairs, 256 based on Foata normal form. 35/1119 useless extension candidates. Maximal degree in co-relation 1557. Up to 548 conditions per place. [2024-11-08 16:53:54,225 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 49 selfloop transitions, 8 changer transitions 2/71 dead transitions. [2024-11-08 16:53:54,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 418 flow [2024-11-08 16:53:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:53:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:53:54,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-11-08 16:53:54,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6513157894736842 [2024-11-08 16:53:54,228 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 224 flow. Second operand 4 states and 99 transitions. [2024-11-08 16:53:54,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 418 flow [2024-11-08 16:53:54,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 71 transitions, 412 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-08 16:53:54,235 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 232 flow [2024-11-08 16:53:54,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-11-08 16:53:54,237 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2024-11-08 16:53:54,238 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 232 flow [2024-11-08 16:53:54,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-11-08 16:53:54,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:53:54,239 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] [2024-11-08 16:53:54,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:53:54,239 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:53:54,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1179736475, now seen corresponding path program 1 times [2024-11-08 16:53:54,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:54,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259595404] [2024-11-08 16:53:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:53:54,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:54,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259595404] [2024-11-08 16:53:54,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259595404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:53:54,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:53:54,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:53:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121664351] [2024-11-08 16:53:54,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:53:54,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:53:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:54,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:53:54,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:53:54,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-08 16:53:54,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-11-08 16:53:54,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:53:54,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-08 16:53:54,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:53:54,541 INFO L124 PetriNetUnfolderBase]: 491/899 cut-off events. [2024-11-08 16:53:54,542 INFO L125 PetriNetUnfolderBase]: For 1268/1270 co-relation queries the response was YES. [2024-11-08 16:53:54,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 899 events. 491/899 cut-off events. For 1268/1270 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4344 event pairs, 300 based on Foata normal form. 3/891 useless extension candidates. Maximal degree in co-relation 1589. Up to 751 conditions per place. [2024-11-08 16:53:54,566 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 32 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-11-08 16:53:54,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 308 flow [2024-11-08 16:53:54,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:53:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:53:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-08 16:53:54,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-11-08 16:53:54,568 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 232 flow. Second operand 3 states and 65 transitions. [2024-11-08 16:53:54,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 308 flow [2024-11-08 16:53:54,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 296 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 16:53:54,572 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 248 flow [2024-11-08 16:53:54,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-11-08 16:53:54,573 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2024-11-08 16:53:54,573 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 248 flow [2024-11-08 16:53:54,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-11-08 16:53:54,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:53:54,573 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] [2024-11-08 16:53:54,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:53:54,574 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:53:54,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1704994266, now seen corresponding path program 1 times [2024-11-08 16:53:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:54,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613575846] [2024-11-08 16:53:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:54,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:53:54,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:54,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613575846] [2024-11-08 16:53:54,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613575846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:53:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688469026] [2024-11-08 16:53:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:54,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:53:54,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:53:54,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:53:54,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:53:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:54,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:53:54,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:53:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:53:54,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:53:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:53:54,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688469026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:53:54,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:53:54,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-08 16:53:54,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850162672] [2024-11-08 16:53:54,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:53:54,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:53:54,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:54,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:53:54,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:53:55,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-08 16:53:55,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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) [2024-11-08 16:53:55,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:53:55,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-08 16:53:55,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:53:55,278 INFO L124 PetriNetUnfolderBase]: 502/940 cut-off events. [2024-11-08 16:53:55,278 INFO L125 PetriNetUnfolderBase]: For 1040/1042 co-relation queries the response was YES. [2024-11-08 16:53:55,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 940 events. 502/940 cut-off events. For 1040/1042 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4589 event pairs, 321 based on Foata normal form. 7/935 useless extension candidates. Maximal degree in co-relation 2336. Up to 772 conditions per place. [2024-11-08 16:53:55,288 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 36 selfloop transitions, 12 changer transitions 0/59 dead transitions. [2024-11-08 16:53:55,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 368 flow [2024-11-08 16:53:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:53:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:53:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-11-08 16:53:55,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-11-08 16:53:55,292 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 248 flow. Second operand 6 states and 106 transitions. [2024-11-08 16:53:55,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 368 flow [2024-11-08 16:53:55,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:53:55,300 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 316 flow [2024-11-08 16:53:55,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-08 16:53:55,302 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-11-08 16:53:55,306 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 316 flow [2024-11-08 16:53:55,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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) [2024-11-08 16:53:55,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:53:55,307 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:53:55,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:53:55,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 16:53:55,509 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:53:55,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:55,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1919158937, now seen corresponding path program 2 times [2024-11-08 16:53:55,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:55,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194487994] [2024-11-08 16:53:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:55,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 16:53:55,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194487994] [2024-11-08 16:53:55,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194487994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:53:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738629798] [2024-11-08 16:53:55,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:53:55,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:53:55,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:53:55,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:53:55,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:53:55,984 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:53:55,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:53:55,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 16:53:55,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:53:56,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 16:53:56,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-11-08 16:53:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 16:53:56,757 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:53:56,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738629798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:53:56,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:53:56,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-11-08 16:53:56,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984148941] [2024-11-08 16:53:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:53:56,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:53:56,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:53:56,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:53:56,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:53:56,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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) [2024-11-08 16:53:56,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:53:56,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:53:56,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:53:58,196 INFO L124 PetriNetUnfolderBase]: 825/1594 cut-off events. [2024-11-08 16:53:58,196 INFO L125 PetriNetUnfolderBase]: For 1318/1318 co-relation queries the response was YES. [2024-11-08 16:53:58,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3923 conditions, 1594 events. 825/1594 cut-off events. For 1318/1318 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9412 event pairs, 150 based on Foata normal form. 6/1593 useless extension candidates. Maximal degree in co-relation 3832. Up to 393 conditions per place. [2024-11-08 16:53:58,209 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 113 selfloop transitions, 24 changer transitions 6/160 dead transitions. [2024-11-08 16:53:58,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 160 transitions, 924 flow [2024-11-08 16:53:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:53:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 16:53:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 336 transitions. [2024-11-08 16:53:58,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-08 16:53:58,212 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 316 flow. Second operand 14 states and 336 transitions. [2024-11-08 16:53:58,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 160 transitions, 924 flow [2024-11-08 16:53:58,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 160 transitions, 908 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-08 16:53:58,220 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 486 flow [2024-11-08 16:53:58,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=486, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-11-08 16:53:58,221 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 45 predicate places. [2024-11-08 16:53:58,221 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 486 flow [2024-11-08 16:53:58,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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) [2024-11-08 16:53:58,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:53:58,224 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:53:58,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 16:53:58,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:53:58,428 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:53:58,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:58,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1078698357, now seen corresponding path program 3 times [2024-11-08 16:53:58,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:58,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011791153] [2024-11-08 16:53:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:58,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 16:53:58,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:58,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011791153] [2024-11-08 16:53:58,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011791153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:53:58,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629527236] [2024-11-08 16:53:58,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:53:58,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:53:58,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:53:58,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:53:58,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:53:58,811 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-08 16:53:58,811 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:53:58,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 16:53:58,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:53:59,098 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-08 16:53:59,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 64 [2024-11-08 16:53:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 16:53:59,252 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:53:59,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629527236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:53:59,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:53:59,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-11-08 16:53:59,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626482514] [2024-11-08 16:53:59,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:53:59,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:53:59,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:59,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:53:59,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:53:59,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:53:59,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 486 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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) [2024-11-08 16:53:59,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:53:59,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:53:59,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:00,225 INFO L124 PetriNetUnfolderBase]: 823/1585 cut-off events. [2024-11-08 16:54:00,225 INFO L125 PetriNetUnfolderBase]: For 2783/2784 co-relation queries the response was YES. [2024-11-08 16:54:00,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4740 conditions, 1585 events. 823/1585 cut-off events. For 2783/2784 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9301 event pairs, 274 based on Foata normal form. 5/1571 useless extension candidates. Maximal degree in co-relation 4649. Up to 659 conditions per place. [2024-11-08 16:54:00,245 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 81 selfloop transitions, 26 changer transitions 10/134 dead transitions. [2024-11-08 16:54:00,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 134 transitions, 978 flow [2024-11-08 16:54:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:54:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 16:54:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-11-08 16:54:00,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-08 16:54:00,249 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 486 flow. Second operand 9 states and 216 transitions. [2024-11-08 16:54:00,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 134 transitions, 978 flow [2024-11-08 16:54:00,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 134 transitions, 943 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-08 16:54:00,267 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 647 flow [2024-11-08 16:54:00,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=647, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-11-08 16:54:00,268 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 55 predicate places. [2024-11-08 16:54:00,269 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 647 flow [2024-11-08 16:54:00,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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) [2024-11-08 16:54:00,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:00,273 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:00,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:54:00,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:00,474 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:00,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:00,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1268963951, now seen corresponding path program 4 times [2024-11-08 16:54:00,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:00,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312399005] [2024-11-08 16:54:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:00,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 16:54:00,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:00,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312399005] [2024-11-08 16:54:00,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312399005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:00,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291387780] [2024-11-08 16:54:00,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:54:00,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:00,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:54:00,769 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:54:00,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:54:00,892 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:54:00,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:54:00,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 16:54:00,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:01,187 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-08 16:54:01,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 64 [2024-11-08 16:54:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 16:54:01,306 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:54:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291387780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:01,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:54:01,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-11-08 16:54:01,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321254395] [2024-11-08 16:54:01,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:01,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:54:01,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:01,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:54:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:54:01,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:01,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 647 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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) [2024-11-08 16:54:01,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:01,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:01,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:02,353 INFO L124 PetriNetUnfolderBase]: 849/1672 cut-off events. [2024-11-08 16:54:02,353 INFO L125 PetriNetUnfolderBase]: For 3910/3926 co-relation queries the response was YES. [2024-11-08 16:54:02,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5449 conditions, 1672 events. 849/1672 cut-off events. For 3910/3926 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10235 event pairs, 187 based on Foata normal form. 18/1683 useless extension candidates. Maximal degree in co-relation 5353. Up to 411 conditions per place. [2024-11-08 16:54:02,374 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 95 selfloop transitions, 21 changer transitions 16/149 dead transitions. [2024-11-08 16:54:02,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 149 transitions, 1213 flow [2024-11-08 16:54:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:54:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 16:54:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-11-08 16:54:02,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-08 16:54:02,376 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 647 flow. Second operand 9 states and 216 transitions. [2024-11-08 16:54:02,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 149 transitions, 1213 flow [2024-11-08 16:54:02,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 149 transitions, 1174 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-11-08 16:54:02,395 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 695 flow [2024-11-08 16:54:02,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=695, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2024-11-08 16:54:02,396 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2024-11-08 16:54:02,396 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 695 flow [2024-11-08 16:54:02,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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) [2024-11-08 16:54:02,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:02,397 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:02,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:54:02,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:02,601 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:02,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash -27958875, now seen corresponding path program 5 times [2024-11-08 16:54:02,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:02,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289952444] [2024-11-08 16:54:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:02,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 16:54:02,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289952444] [2024-11-08 16:54:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289952444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240147212] [2024-11-08 16:54:02,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:54:02,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:54:02,884 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:54:02,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:54:03,079 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-08 16:54:03,079 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:54:03,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:54:03,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 16:54:03,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:54:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 16:54:03,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240147212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:54:03,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:54:03,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-08 16:54:03,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556501336] [2024-11-08 16:54:03,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:54:03,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:54:03,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:54:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:54:03,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-08 16:54:03,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 695 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:03,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:03,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-08 16:54:03,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:03,760 INFO L124 PetriNetUnfolderBase]: 822/1581 cut-off events. [2024-11-08 16:54:03,760 INFO L125 PetriNetUnfolderBase]: For 4554/4564 co-relation queries the response was YES. [2024-11-08 16:54:03,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5343 conditions, 1581 events. 822/1581 cut-off events. For 4554/4564 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9155 event pairs, 429 based on Foata normal form. 3/1579 useless extension candidates. Maximal degree in co-relation 5243. Up to 1232 conditions per place. [2024-11-08 16:54:03,785 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 73 selfloop transitions, 16 changer transitions 0/100 dead transitions. [2024-11-08 16:54:03,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 933 flow [2024-11-08 16:54:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:54:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:54:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-11-08 16:54:03,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-11-08 16:54:03,787 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 695 flow. Second operand 8 states and 120 transitions. [2024-11-08 16:54:03,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 100 transitions, 933 flow [2024-11-08 16:54:03,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 100 transitions, 900 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-08 16:54:03,805 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 750 flow [2024-11-08 16:54:03,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=750, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2024-11-08 16:54:03,806 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2024-11-08 16:54:03,808 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 750 flow [2024-11-08 16:54:03,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:03,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:03,809 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:03,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:54:04,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:04,010 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:04,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:04,010 INFO L85 PathProgramCache]: Analyzing trace with hash -759012486, now seen corresponding path program 6 times [2024-11-08 16:54:04,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:04,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433973401] [2024-11-08 16:54:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:04,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:05,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:05,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433973401] [2024-11-08 16:54:05,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433973401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:05,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:05,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:05,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136051563] [2024-11-08 16:54:05,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:05,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:05,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:05,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:05,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:05,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:05,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 750 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:05,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:05,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:05,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:06,731 INFO L124 PetriNetUnfolderBase]: 1217/2402 cut-off events. [2024-11-08 16:54:06,731 INFO L125 PetriNetUnfolderBase]: For 5698/5698 co-relation queries the response was YES. [2024-11-08 16:54:06,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7741 conditions, 2402 events. 1217/2402 cut-off events. For 5698/5698 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15788 event pairs, 76 based on Foata normal form. 4/2397 useless extension candidates. Maximal degree in co-relation 7597. Up to 408 conditions per place. [2024-11-08 16:54:06,767 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 118 selfloop transitions, 105 changer transitions 10/252 dead transitions. [2024-11-08 16:54:06,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 252 transitions, 2067 flow [2024-11-08 16:54:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 16:54:06,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-08 16:54:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 511 transitions. [2024-11-08 16:54:06,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5846681922196796 [2024-11-08 16:54:06,771 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 750 flow. Second operand 23 states and 511 transitions. [2024-11-08 16:54:06,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 252 transitions, 2067 flow [2024-11-08 16:54:06,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 252 transitions, 2055 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:54:06,807 INFO L231 Difference]: Finished difference. Result has 119 places, 170 transitions, 1671 flow [2024-11-08 16:54:06,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1671, PETRI_PLACES=119, PETRI_TRANSITIONS=170} [2024-11-08 16:54:06,809 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 87 predicate places. [2024-11-08 16:54:06,809 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 170 transitions, 1671 flow [2024-11-08 16:54:06,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:06,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:06,810 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:06,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:54:06,811 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:06,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:06,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2015068258, now seen corresponding path program 7 times [2024-11-08 16:54:06,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:06,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957149298] [2024-11-08 16:54:06,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:06,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:07,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:07,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957149298] [2024-11-08 16:54:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957149298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:07,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:07,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216631316] [2024-11-08 16:54:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:07,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:07,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:07,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:07,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 170 transitions, 1671 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:07,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:07,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:07,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:09,581 INFO L124 PetriNetUnfolderBase]: 1270/2537 cut-off events. [2024-11-08 16:54:09,581 INFO L125 PetriNetUnfolderBase]: For 8792/8804 co-relation queries the response was YES. [2024-11-08 16:54:09,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9380 conditions, 2537 events. 1270/2537 cut-off events. For 8792/8804 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 17044 event pairs, 96 based on Foata normal form. 5/2536 useless extension candidates. Maximal degree in co-relation 9235. Up to 391 conditions per place. [2024-11-08 16:54:09,605 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 123 selfloop transitions, 124 changer transitions 9/275 dead transitions. [2024-11-08 16:54:09,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 275 transitions, 2674 flow [2024-11-08 16:54:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:54:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 16:54:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 519 transitions. [2024-11-08 16:54:09,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.569078947368421 [2024-11-08 16:54:09,609 INFO L175 Difference]: Start difference. First operand has 119 places, 170 transitions, 1671 flow. Second operand 24 states and 519 transitions. [2024-11-08 16:54:09,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 275 transitions, 2674 flow [2024-11-08 16:54:09,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 275 transitions, 2409 flow, removed 99 selfloop flow, removed 6 redundant places. [2024-11-08 16:54:09,668 INFO L231 Difference]: Finished difference. Result has 140 places, 194 transitions, 1964 flow [2024-11-08 16:54:09,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1964, PETRI_PLACES=140, PETRI_TRANSITIONS=194} [2024-11-08 16:54:09,670 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-11-08 16:54:09,670 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 194 transitions, 1964 flow [2024-11-08 16:54:09,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:09,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:09,670 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:09,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:54:09,671 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:09,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:09,671 INFO L85 PathProgramCache]: Analyzing trace with hash 325243014, now seen corresponding path program 8 times [2024-11-08 16:54:09,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:09,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820946850] [2024-11-08 16:54:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:09,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:10,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:10,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820946850] [2024-11-08 16:54:10,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820946850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:10,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:10,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:10,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072846076] [2024-11-08 16:54:10,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:10,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:10,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:10,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:10,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:10,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:10,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 194 transitions, 1964 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:10,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:10,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:10,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:12,342 INFO L124 PetriNetUnfolderBase]: 1298/2587 cut-off events. [2024-11-08 16:54:12,343 INFO L125 PetriNetUnfolderBase]: For 9231/9231 co-relation queries the response was YES. [2024-11-08 16:54:12,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9779 conditions, 2587 events. 1298/2587 cut-off events. For 9231/9231 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17477 event pairs, 179 based on Foata normal form. 1/2561 useless extension candidates. Maximal degree in co-relation 9676. Up to 640 conditions per place. [2024-11-08 16:54:12,378 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 140 selfloop transitions, 107 changer transitions 9/275 dead transitions. [2024-11-08 16:54:12,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 275 transitions, 2817 flow [2024-11-08 16:54:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 16:54:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-08 16:54:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 450 transitions. [2024-11-08 16:54:12,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2024-11-08 16:54:12,382 INFO L175 Difference]: Start difference. First operand has 140 places, 194 transitions, 1964 flow. Second operand 20 states and 450 transitions. [2024-11-08 16:54:12,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 275 transitions, 2817 flow [2024-11-08 16:54:12,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 275 transitions, 2733 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-11-08 16:54:12,447 INFO L231 Difference]: Finished difference. Result has 158 places, 204 transitions, 2264 flow [2024-11-08 16:54:12,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2264, PETRI_PLACES=158, PETRI_TRANSITIONS=204} [2024-11-08 16:54:12,451 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 126 predicate places. [2024-11-08 16:54:12,451 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 204 transitions, 2264 flow [2024-11-08 16:54:12,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:12,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:12,452 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:12,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:54:12,452 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:12,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2122910778, now seen corresponding path program 9 times [2024-11-08 16:54:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303492970] [2024-11-08 16:54:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:12,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:13,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:13,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303492970] [2024-11-08 16:54:13,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303492970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:13,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:13,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:13,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628576028] [2024-11-08 16:54:13,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:13,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:13,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:13,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:13,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:13,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:13,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 204 transitions, 2264 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:13,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:13,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:13,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:15,278 INFO L124 PetriNetUnfolderBase]: 1324/2637 cut-off events. [2024-11-08 16:54:15,279 INFO L125 PetriNetUnfolderBase]: For 10422/10422 co-relation queries the response was YES. [2024-11-08 16:54:15,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10434 conditions, 2637 events. 1324/2637 cut-off events. For 10422/10422 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17845 event pairs, 114 based on Foata normal form. 1/2632 useless extension candidates. Maximal degree in co-relation 10285. Up to 456 conditions per place. [2024-11-08 16:54:15,304 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 156 selfloop transitions, 106 changer transitions 10/291 dead transitions. [2024-11-08 16:54:15,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 291 transitions, 3099 flow [2024-11-08 16:54:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:54:15,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 16:54:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 520 transitions. [2024-11-08 16:54:15,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-11-08 16:54:15,308 INFO L175 Difference]: Start difference. First operand has 158 places, 204 transitions, 2264 flow. Second operand 24 states and 520 transitions. [2024-11-08 16:54:15,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 291 transitions, 3099 flow [2024-11-08 16:54:15,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 291 transitions, 2936 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-11-08 16:54:15,365 INFO L231 Difference]: Finished difference. Result has 170 places, 209 transitions, 2420 flow [2024-11-08 16:54:15,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2420, PETRI_PLACES=170, PETRI_TRANSITIONS=209} [2024-11-08 16:54:15,366 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 138 predicate places. [2024-11-08 16:54:15,366 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 209 transitions, 2420 flow [2024-11-08 16:54:15,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:15,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:15,367 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:15,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 16:54:15,368 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:15,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1917428422, now seen corresponding path program 10 times [2024-11-08 16:54:15,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:15,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87985152] [2024-11-08 16:54:15,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:15,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:16,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:16,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87985152] [2024-11-08 16:54:16,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87985152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:16,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:16,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:16,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657337811] [2024-11-08 16:54:16,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:16,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:16,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:16,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:16,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:16,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:16,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 209 transitions, 2420 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:16,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:16,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:16,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:17,877 INFO L124 PetriNetUnfolderBase]: 1449/2919 cut-off events. [2024-11-08 16:54:17,877 INFO L125 PetriNetUnfolderBase]: For 13114/13114 co-relation queries the response was YES. [2024-11-08 16:54:17,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11773 conditions, 2919 events. 1449/2919 cut-off events. For 13114/13114 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 20652 event pairs, 174 based on Foata normal form. 1/2903 useless extension candidates. Maximal degree in co-relation 11623. Up to 520 conditions per place. [2024-11-08 16:54:17,906 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 175 selfloop transitions, 105 changer transitions 10/309 dead transitions. [2024-11-08 16:54:17,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 309 transitions, 3459 flow [2024-11-08 16:54:17,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 16:54:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-08 16:54:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 500 transitions. [2024-11-08 16:54:17,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5980861244019139 [2024-11-08 16:54:17,910 INFO L175 Difference]: Start difference. First operand has 170 places, 209 transitions, 2420 flow. Second operand 22 states and 500 transitions. [2024-11-08 16:54:17,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 309 transitions, 3459 flow [2024-11-08 16:54:17,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 309 transitions, 3284 flow, removed 19 selfloop flow, removed 17 redundant places. [2024-11-08 16:54:17,974 INFO L231 Difference]: Finished difference. Result has 178 places, 225 transitions, 2768 flow [2024-11-08 16:54:17,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2271, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2768, PETRI_PLACES=178, PETRI_TRANSITIONS=225} [2024-11-08 16:54:17,975 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 146 predicate places. [2024-11-08 16:54:17,975 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 225 transitions, 2768 flow [2024-11-08 16:54:17,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:17,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:17,976 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:17,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 16:54:17,976 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:17,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:17,977 INFO L85 PathProgramCache]: Analyzing trace with hash -639775840, now seen corresponding path program 11 times [2024-11-08 16:54:17,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:17,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273668572] [2024-11-08 16:54:17,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:19,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:19,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273668572] [2024-11-08 16:54:19,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273668572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:19,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:19,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:19,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281757373] [2024-11-08 16:54:19,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:19,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:19,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:19,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:19,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 225 transitions, 2768 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:19,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:19,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:19,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:20,792 INFO L124 PetriNetUnfolderBase]: 1483/2982 cut-off events. [2024-11-08 16:54:20,792 INFO L125 PetriNetUnfolderBase]: For 15907/15907 co-relation queries the response was YES. [2024-11-08 16:54:20,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12411 conditions, 2982 events. 1483/2982 cut-off events. For 15907/15907 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 21136 event pairs, 115 based on Foata normal form. 1/2977 useless extension candidates. Maximal degree in co-relation 12257. Up to 455 conditions per place. [2024-11-08 16:54:20,835 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 132 selfloop transitions, 154 changer transitions 9/314 dead transitions. [2024-11-08 16:54:20,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 314 transitions, 3726 flow [2024-11-08 16:54:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:54:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 16:54:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 534 transitions. [2024-11-08 16:54:20,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-11-08 16:54:20,839 INFO L175 Difference]: Start difference. First operand has 178 places, 225 transitions, 2768 flow. Second operand 24 states and 534 transitions. [2024-11-08 16:54:20,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 314 transitions, 3726 flow [2024-11-08 16:54:20,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 314 transitions, 3635 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-11-08 16:54:20,918 INFO L231 Difference]: Finished difference. Result has 193 places, 233 transitions, 3177 flow [2024-11-08 16:54:20,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3177, PETRI_PLACES=193, PETRI_TRANSITIONS=233} [2024-11-08 16:54:20,919 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 161 predicate places. [2024-11-08 16:54:20,919 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 233 transitions, 3177 flow [2024-11-08 16:54:20,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:20,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:20,920 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:20,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 16:54:20,920 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:20,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash 596462964, now seen corresponding path program 12 times [2024-11-08 16:54:20,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:20,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045694019] [2024-11-08 16:54:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:20,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:21,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:21,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045694019] [2024-11-08 16:54:21,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045694019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:21,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:21,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:21,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311681001] [2024-11-08 16:54:21,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:21,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:21,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:21,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:21,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:21,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:21,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 233 transitions, 3177 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:21,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:21,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:21,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:23,541 INFO L124 PetriNetUnfolderBase]: 1562/3108 cut-off events. [2024-11-08 16:54:23,541 INFO L125 PetriNetUnfolderBase]: For 19687/19687 co-relation queries the response was YES. [2024-11-08 16:54:23,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13828 conditions, 3108 events. 1562/3108 cut-off events. For 19687/19687 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22204 event pairs, 182 based on Foata normal form. 1/3082 useless extension candidates. Maximal degree in co-relation 13674. Up to 702 conditions per place. [2024-11-08 16:54:23,573 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 140 selfloop transitions, 137 changer transitions 10/306 dead transitions. [2024-11-08 16:54:23,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 306 transitions, 4094 flow [2024-11-08 16:54:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 16:54:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-08 16:54:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 441 transitions. [2024-11-08 16:54:23,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5802631578947368 [2024-11-08 16:54:23,576 INFO L175 Difference]: Start difference. First operand has 193 places, 233 transitions, 3177 flow. Second operand 20 states and 441 transitions. [2024-11-08 16:54:23,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 306 transitions, 4094 flow [2024-11-08 16:54:23,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 306 transitions, 3712 flow, removed 17 selfloop flow, removed 23 redundant places. [2024-11-08 16:54:23,669 INFO L231 Difference]: Finished difference. Result has 192 places, 240 transitions, 3339 flow [2024-11-08 16:54:23,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3339, PETRI_PLACES=192, PETRI_TRANSITIONS=240} [2024-11-08 16:54:23,670 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 160 predicate places. [2024-11-08 16:54:23,670 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 240 transitions, 3339 flow [2024-11-08 16:54:23,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:23,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:23,671 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:23,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 16:54:23,671 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:23,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1312188468, now seen corresponding path program 13 times [2024-11-08 16:54:23,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:23,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620829975] [2024-11-08 16:54:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:23,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:24,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:24,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620829975] [2024-11-08 16:54:24,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620829975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:24,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:24,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:24,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602695563] [2024-11-08 16:54:24,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:24,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:24,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:24,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:24,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:24,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:24,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 240 transitions, 3339 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:24,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:24,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:24,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:26,420 INFO L124 PetriNetUnfolderBase]: 1721/3412 cut-off events. [2024-11-08 16:54:26,420 INFO L125 PetriNetUnfolderBase]: For 25192/25194 co-relation queries the response was YES. [2024-11-08 16:54:26,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15331 conditions, 3412 events. 1721/3412 cut-off events. For 25192/25194 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 24842 event pairs, 196 based on Foata normal form. 2/3381 useless extension candidates. Maximal degree in co-relation 15176. Up to 785 conditions per place. [2024-11-08 16:54:26,452 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 191 selfloop transitions, 171 changer transitions 8/389 dead transitions. [2024-11-08 16:54:26,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 389 transitions, 5277 flow [2024-11-08 16:54:26,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 16:54:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-08 16:54:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 522 transitions. [2024-11-08 16:54:26,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.597254004576659 [2024-11-08 16:54:26,455 INFO L175 Difference]: Start difference. First operand has 192 places, 240 transitions, 3339 flow. Second operand 23 states and 522 transitions. [2024-11-08 16:54:26,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 389 transitions, 5277 flow [2024-11-08 16:54:26,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 389 transitions, 4998 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-11-08 16:54:26,545 INFO L231 Difference]: Finished difference. Result has 208 places, 294 transitions, 4506 flow [2024-11-08 16:54:26,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3145, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4506, PETRI_PLACES=208, PETRI_TRANSITIONS=294} [2024-11-08 16:54:26,546 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2024-11-08 16:54:26,546 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 294 transitions, 4506 flow [2024-11-08 16:54:26,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:26,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:26,547 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:26,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 16:54:26,548 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:26,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:26,548 INFO L85 PathProgramCache]: Analyzing trace with hash -576967844, now seen corresponding path program 14 times [2024-11-08 16:54:26,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:26,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582752474] [2024-11-08 16:54:26,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:26,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:27,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:27,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582752474] [2024-11-08 16:54:27,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582752474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:27,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:27,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:27,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846498178] [2024-11-08 16:54:27,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:27,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:27,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:27,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:27,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:27,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:27,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 294 transitions, 4506 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:27,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:27,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:27,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:29,152 INFO L124 PetriNetUnfolderBase]: 1797/3637 cut-off events. [2024-11-08 16:54:29,152 INFO L125 PetriNetUnfolderBase]: For 29637/29639 co-relation queries the response was YES. [2024-11-08 16:54:29,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16902 conditions, 3637 events. 1797/3637 cut-off events. For 29637/29639 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 27281 event pairs, 168 based on Foata normal form. 2/3634 useless extension candidates. Maximal degree in co-relation 16736. Up to 561 conditions per place. [2024-11-08 16:54:29,187 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 192 selfloop transitions, 168 changer transitions 8/387 dead transitions. [2024-11-08 16:54:29,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 387 transitions, 5725 flow [2024-11-08 16:54:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 16:54:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-08 16:54:29,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 468 transitions. [2024-11-08 16:54:29,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5864661654135338 [2024-11-08 16:54:29,189 INFO L175 Difference]: Start difference. First operand has 208 places, 294 transitions, 4506 flow. Second operand 21 states and 468 transitions. [2024-11-08 16:54:29,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 387 transitions, 5725 flow [2024-11-08 16:54:29,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 387 transitions, 5637 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-11-08 16:54:29,315 INFO L231 Difference]: Finished difference. Result has 231 places, 309 transitions, 5127 flow [2024-11-08 16:54:29,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4433, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5127, PETRI_PLACES=231, PETRI_TRANSITIONS=309} [2024-11-08 16:54:29,316 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 199 predicate places. [2024-11-08 16:54:29,316 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 309 transitions, 5127 flow [2024-11-08 16:54:29,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:29,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:29,317 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:29,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 16:54:29,317 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:29,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash -287186980, now seen corresponding path program 15 times [2024-11-08 16:54:29,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:29,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460709543] [2024-11-08 16:54:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:29,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:30,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:30,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460709543] [2024-11-08 16:54:30,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460709543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:30,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:30,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:30,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861258960] [2024-11-08 16:54:30,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:30,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:30,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:30,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:30,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:30,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 309 transitions, 5127 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:30,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:30,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:30,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:32,433 INFO L124 PetriNetUnfolderBase]: 1883/3815 cut-off events. [2024-11-08 16:54:32,433 INFO L125 PetriNetUnfolderBase]: For 36606/36608 co-relation queries the response was YES. [2024-11-08 16:54:32,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18677 conditions, 3815 events. 1883/3815 cut-off events. For 36606/36608 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 28910 event pairs, 139 based on Foata normal form. 2/3812 useless extension candidates. Maximal degree in co-relation 18504. Up to 650 conditions per place. [2024-11-08 16:54:32,470 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 190 selfloop transitions, 203 changer transitions 8/420 dead transitions. [2024-11-08 16:54:32,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 420 transitions, 6705 flow [2024-11-08 16:54:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:54:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 16:54:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 519 transitions. [2024-11-08 16:54:32,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.569078947368421 [2024-11-08 16:54:32,473 INFO L175 Difference]: Start difference. First operand has 231 places, 309 transitions, 5127 flow. Second operand 24 states and 519 transitions. [2024-11-08 16:54:32,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 420 transitions, 6705 flow [2024-11-08 16:54:32,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 420 transitions, 6623 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-11-08 16:54:32,683 INFO L231 Difference]: Finished difference. Result has 259 places, 333 transitions, 6123 flow [2024-11-08 16:54:32,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5066, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6123, PETRI_PLACES=259, PETRI_TRANSITIONS=333} [2024-11-08 16:54:32,684 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 227 predicate places. [2024-11-08 16:54:32,684 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 333 transitions, 6123 flow [2024-11-08 16:54:32,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:32,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:32,684 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:32,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 16:54:32,685 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:32,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:32,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1805959068, now seen corresponding path program 16 times [2024-11-08 16:54:32,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:32,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985264327] [2024-11-08 16:54:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:32,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:33,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:33,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985264327] [2024-11-08 16:54:33,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985264327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:33,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:33,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:33,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872498524] [2024-11-08 16:54:33,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:33,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:33,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:33,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:33,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:33,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:33,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 333 transitions, 6123 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:33,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:33,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:33,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:35,443 INFO L124 PetriNetUnfolderBase]: 1913/3841 cut-off events. [2024-11-08 16:54:35,443 INFO L125 PetriNetUnfolderBase]: For 44197/44199 co-relation queries the response was YES. [2024-11-08 16:54:35,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20356 conditions, 3841 events. 1913/3841 cut-off events. For 44197/44199 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 29000 event pairs, 223 based on Foata normal form. 2/3806 useless extension candidates. Maximal degree in co-relation 20174. Up to 942 conditions per place. [2024-11-08 16:54:35,480 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 183 selfloop transitions, 202 changer transitions 8/412 dead transitions. [2024-11-08 16:54:35,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 412 transitions, 7241 flow [2024-11-08 16:54:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 16:54:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-08 16:54:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 452 transitions. [2024-11-08 16:54:35,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5947368421052631 [2024-11-08 16:54:35,483 INFO L175 Difference]: Start difference. First operand has 259 places, 333 transitions, 6123 flow. Second operand 20 states and 452 transitions. [2024-11-08 16:54:35,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 412 transitions, 7241 flow [2024-11-08 16:54:35,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 412 transitions, 7070 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-11-08 16:54:35,669 INFO L231 Difference]: Finished difference. Result has 276 places, 341 transitions, 6657 flow [2024-11-08 16:54:35,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5966, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6657, PETRI_PLACES=276, PETRI_TRANSITIONS=341} [2024-11-08 16:54:35,670 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 244 predicate places. [2024-11-08 16:54:35,670 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 341 transitions, 6657 flow [2024-11-08 16:54:35,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:35,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:35,670 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:35,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 16:54:35,671 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:35,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:35,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2068337372, now seen corresponding path program 17 times [2024-11-08 16:54:35,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:35,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282491451] [2024-11-08 16:54:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:35,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:36,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:36,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282491451] [2024-11-08 16:54:36,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282491451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:36,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:36,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368157957] [2024-11-08 16:54:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:36,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:36,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:36,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 341 transitions, 6657 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:36,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:36,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:36,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:38,375 INFO L124 PetriNetUnfolderBase]: 1945/3972 cut-off events. [2024-11-08 16:54:38,375 INFO L125 PetriNetUnfolderBase]: For 50621/50623 co-relation queries the response was YES. [2024-11-08 16:54:38,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21630 conditions, 3972 events. 1945/3972 cut-off events. For 50621/50623 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 30461 event pairs, 167 based on Foata normal form. 2/3969 useless extension candidates. Maximal degree in co-relation 21445. Up to 805 conditions per place. [2024-11-08 16:54:38,436 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 194 selfloop transitions, 177 changer transitions 7/397 dead transitions. [2024-11-08 16:54:38,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 397 transitions, 7564 flow [2024-11-08 16:54:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 16:54:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-08 16:54:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 395 transitions. [2024-11-08 16:54:38,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.577485380116959 [2024-11-08 16:54:38,439 INFO L175 Difference]: Start difference. First operand has 276 places, 341 transitions, 6657 flow. Second operand 18 states and 395 transitions. [2024-11-08 16:54:38,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 397 transitions, 7564 flow [2024-11-08 16:54:38,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 397 transitions, 7417 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-11-08 16:54:38,697 INFO L231 Difference]: Finished difference. Result has 283 places, 340 transitions, 6866 flow [2024-11-08 16:54:38,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6518, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6866, PETRI_PLACES=283, PETRI_TRANSITIONS=340} [2024-11-08 16:54:38,698 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-11-08 16:54:38,698 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 340 transitions, 6866 flow [2024-11-08 16:54:38,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:38,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:38,699 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:38,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-08 16:54:38,699 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:38,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1395007536, now seen corresponding path program 18 times [2024-11-08 16:54:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:38,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255885219] [2024-11-08 16:54:38,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:38,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:39,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:39,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255885219] [2024-11-08 16:54:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255885219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:39,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:39,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209980603] [2024-11-08 16:54:39,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:39,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:39,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:39,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:39,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 340 transitions, 6866 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:39,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:39,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:39,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:41,141 INFO L124 PetriNetUnfolderBase]: 1914/3872 cut-off events. [2024-11-08 16:54:41,141 INFO L125 PetriNetUnfolderBase]: For 56308/56310 co-relation queries the response was YES. [2024-11-08 16:54:41,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21846 conditions, 3872 events. 1914/3872 cut-off events. For 56308/56310 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 29359 event pairs, 365 based on Foata normal form. 2/3859 useless extension candidates. Maximal degree in co-relation 21661. Up to 899 conditions per place. [2024-11-08 16:54:41,198 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 236 selfloop transitions, 137 changer transitions 7/399 dead transitions. [2024-11-08 16:54:41,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 399 transitions, 7842 flow [2024-11-08 16:54:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 16:54:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-08 16:54:41,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 382 transitions. [2024-11-08 16:54:41,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5913312693498453 [2024-11-08 16:54:41,200 INFO L175 Difference]: Start difference. First operand has 283 places, 340 transitions, 6866 flow. Second operand 17 states and 382 transitions. [2024-11-08 16:54:41,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 399 transitions, 7842 flow [2024-11-08 16:54:41,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 399 transitions, 7473 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-11-08 16:54:41,416 INFO L231 Difference]: Finished difference. Result has 283 places, 342 transitions, 6843 flow [2024-11-08 16:54:41,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6512, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6843, PETRI_PLACES=283, PETRI_TRANSITIONS=342} [2024-11-08 16:54:41,417 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-11-08 16:54:41,417 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 342 transitions, 6843 flow [2024-11-08 16:54:41,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:41,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:41,417 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:41,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 16:54:41,418 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:41,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:41,418 INFO L85 PathProgramCache]: Analyzing trace with hash -437036056, now seen corresponding path program 19 times [2024-11-08 16:54:41,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:41,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510874531] [2024-11-08 16:54:41,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:41,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:42,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:42,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510874531] [2024-11-08 16:54:42,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510874531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:42,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:42,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:42,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618380722] [2024-11-08 16:54:42,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:42,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:42,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:42,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:42,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:42,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:42,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 342 transitions, 6843 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:42,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:42,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:42,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:44,785 INFO L124 PetriNetUnfolderBase]: 2291/4741 cut-off events. [2024-11-08 16:54:44,785 INFO L125 PetriNetUnfolderBase]: For 59477/59479 co-relation queries the response was YES. [2024-11-08 16:54:44,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25201 conditions, 4741 events. 2291/4741 cut-off events. For 59477/59479 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 37851 event pairs, 195 based on Foata normal form. 2/4738 useless extension candidates. Maximal degree in co-relation 25015. Up to 703 conditions per place. [2024-11-08 16:54:44,846 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 171 selfloop transitions, 273 changer transitions 8/471 dead transitions. [2024-11-08 16:54:44,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 471 transitions, 8892 flow [2024-11-08 16:54:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:54:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 16:54:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 529 transitions. [2024-11-08 16:54:44,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5800438596491229 [2024-11-08 16:54:44,848 INFO L175 Difference]: Start difference. First operand has 283 places, 342 transitions, 6843 flow. Second operand 24 states and 529 transitions. [2024-11-08 16:54:44,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 471 transitions, 8892 flow [2024-11-08 16:54:45,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 471 transitions, 8704 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-11-08 16:54:45,258 INFO L231 Difference]: Finished difference. Result has 306 places, 385 transitions, 8331 flow [2024-11-08 16:54:45,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6678, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8331, PETRI_PLACES=306, PETRI_TRANSITIONS=385} [2024-11-08 16:54:45,259 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2024-11-08 16:54:45,260 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 385 transitions, 8331 flow [2024-11-08 16:54:45,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:45,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:45,260 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:45,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-08 16:54:45,261 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:45,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:45,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2111826780, now seen corresponding path program 20 times [2024-11-08 16:54:45,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:45,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822449154] [2024-11-08 16:54:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:46,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:46,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822449154] [2024-11-08 16:54:46,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822449154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:46,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:46,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:46,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595231075] [2024-11-08 16:54:46,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:46,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:46,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:46,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:46,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:46,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:46,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 385 transitions, 8331 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:46,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:46,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:46,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:49,118 INFO L124 PetriNetUnfolderBase]: 2311/4789 cut-off events. [2024-11-08 16:54:49,118 INFO L125 PetriNetUnfolderBase]: For 70023/70025 co-relation queries the response was YES. [2024-11-08 16:54:49,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26930 conditions, 4789 events. 2311/4789 cut-off events. For 70023/70025 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 38450 event pairs, 244 based on Foata normal form. 2/4786 useless extension candidates. Maximal degree in co-relation 26735. Up to 769 conditions per place. [2024-11-08 16:54:49,183 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 227 selfloop transitions, 209 changer transitions 8/463 dead transitions. [2024-11-08 16:54:49,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 463 transitions, 9487 flow [2024-11-08 16:54:49,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 16:54:49,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-08 16:54:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 492 transitions. [2024-11-08 16:54:49,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885167464114832 [2024-11-08 16:54:49,187 INFO L175 Difference]: Start difference. First operand has 306 places, 385 transitions, 8331 flow. Second operand 22 states and 492 transitions. [2024-11-08 16:54:49,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 463 transitions, 9487 flow [2024-11-08 16:54:49,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 463 transitions, 9263 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-11-08 16:54:49,544 INFO L231 Difference]: Finished difference. Result has 317 places, 386 transitions, 8673 flow [2024-11-08 16:54:49,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8120, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8673, PETRI_PLACES=317, PETRI_TRANSITIONS=386} [2024-11-08 16:54:49,546 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-11-08 16:54:49,546 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 386 transitions, 8673 flow [2024-11-08 16:54:49,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:49,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:49,546 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:49,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-08 16:54:49,547 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:49,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:49,547 INFO L85 PathProgramCache]: Analyzing trace with hash 272834652, now seen corresponding path program 21 times [2024-11-08 16:54:49,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:49,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553524234] [2024-11-08 16:54:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:49,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:50,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:50,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553524234] [2024-11-08 16:54:50,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553524234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:50,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:50,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:50,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911714030] [2024-11-08 16:54:50,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:50,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:50,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:50,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:50,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:50,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 386 transitions, 8673 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:50,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:50,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:50,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:53,017 INFO L124 PetriNetUnfolderBase]: 2300/4756 cut-off events. [2024-11-08 16:54:53,017 INFO L125 PetriNetUnfolderBase]: For 75826/75828 co-relation queries the response was YES. [2024-11-08 16:54:53,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27374 conditions, 4756 events. 2300/4756 cut-off events. For 75826/75828 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 38210 event pairs, 217 based on Foata normal form. 2/4751 useless extension candidates. Maximal degree in co-relation 27183. Up to 865 conditions per place. [2024-11-08 16:54:53,059 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 209 selfloop transitions, 204 changer transitions 7/439 dead transitions. [2024-11-08 16:54:53,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 439 transitions, 9683 flow [2024-11-08 16:54:53,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 16:54:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-08 16:54:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 346 transitions. [2024-11-08 16:54:53,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.569078947368421 [2024-11-08 16:54:53,060 INFO L175 Difference]: Start difference. First operand has 317 places, 386 transitions, 8673 flow. Second operand 16 states and 346 transitions. [2024-11-08 16:54:53,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 439 transitions, 9683 flow [2024-11-08 16:54:53,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 439 transitions, 9354 flow, removed 12 selfloop flow, removed 22 redundant places. [2024-11-08 16:54:53,285 INFO L231 Difference]: Finished difference. Result has 313 places, 388 transitions, 8818 flow [2024-11-08 16:54:53,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8352, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8818, PETRI_PLACES=313, PETRI_TRANSITIONS=388} [2024-11-08 16:54:53,285 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-11-08 16:54:53,286 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 388 transitions, 8818 flow [2024-11-08 16:54:53,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:53,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:53,286 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:53,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-08 16:54:53,286 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:53,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:53,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1450576054, now seen corresponding path program 22 times [2024-11-08 16:54:53,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:53,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905724660] [2024-11-08 16:54:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:53,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905724660] [2024-11-08 16:54:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905724660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:54,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:54,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:54:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014078108] [2024-11-08 16:54:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:54,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:54:54,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:54,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:54:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:54:54,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:54:54,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 388 transitions, 8818 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:54,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:54,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:54:54,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:54:56,969 INFO L124 PetriNetUnfolderBase]: 2319/4809 cut-off events. [2024-11-08 16:54:56,969 INFO L125 PetriNetUnfolderBase]: For 78024/78026 co-relation queries the response was YES. [2024-11-08 16:54:57,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27968 conditions, 4809 events. 2319/4809 cut-off events. For 78024/78026 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 38710 event pairs, 155 based on Foata normal form. 2/4806 useless extension candidates. Maximal degree in co-relation 27778. Up to 800 conditions per place. [2024-11-08 16:54:57,024 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 207 selfloop transitions, 238 changer transitions 8/472 dead transitions. [2024-11-08 16:54:57,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 472 transitions, 9966 flow [2024-11-08 16:54:57,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 16:54:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 16:54:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 539 transitions. [2024-11-08 16:54:57,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5673684210526316 [2024-11-08 16:54:57,026 INFO L175 Difference]: Start difference. First operand has 313 places, 388 transitions, 8818 flow. Second operand 25 states and 539 transitions. [2024-11-08 16:54:57,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 472 transitions, 9966 flow [2024-11-08 16:54:57,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 472 transitions, 9590 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-11-08 16:54:57,449 INFO L231 Difference]: Finished difference. Result has 326 places, 388 transitions, 8942 flow [2024-11-08 16:54:57,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8454, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8942, PETRI_PLACES=326, PETRI_TRANSITIONS=388} [2024-11-08 16:54:57,450 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-11-08 16:54:57,450 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 388 transitions, 8942 flow [2024-11-08 16:54:57,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-08 16:54:57,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:54:57,451 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:57,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-08 16:54:57,451 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:54:57,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:57,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1702322214, now seen corresponding path program 1 times [2024-11-08 16:54:57,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:57,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618162153] [2024-11-08 16:54:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:57,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:57,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:57,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618162153] [2024-11-08 16:54:57,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618162153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:57,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295175703] [2024-11-08 16:54:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:57,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:57,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:54:57,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:54:57,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:54:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:57,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:54:57,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:57,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:54:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:54:57,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295175703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:54:57,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:54:57,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 16:54:57,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080257911] [2024-11-08 16:54:57,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:54:57,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:54:57,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:57,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:54:57,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:54:57,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-08 16:54:57,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 388 transitions, 8942 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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) [2024-11-08 16:54:57,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:54:57,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-08 16:54:57,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:00,162 INFO L124 PetriNetUnfolderBase]: 3394/6463 cut-off events. [2024-11-08 16:55:00,162 INFO L125 PetriNetUnfolderBase]: For 99172/99172 co-relation queries the response was YES. [2024-11-08 16:55:00,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39352 conditions, 6463 events. 3394/6463 cut-off events. For 99172/99172 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 46551 event pairs, 857 based on Foata normal form. 776/7239 useless extension candidates. Maximal degree in co-relation 39163. Up to 1428 conditions per place. [2024-11-08 16:55:00,243 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 511 selfloop transitions, 77 changer transitions 1/603 dead transitions. [2024-11-08 16:55:00,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 603 transitions, 14140 flow [2024-11-08 16:55:00,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:55:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 16:55:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-11-08 16:55:00,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6917293233082706 [2024-11-08 16:55:00,245 INFO L175 Difference]: Start difference. First operand has 326 places, 388 transitions, 8942 flow. Second operand 7 states and 184 transitions. [2024-11-08 16:55:00,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 603 transitions, 14140 flow [2024-11-08 16:55:00,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 603 transitions, 13706 flow, removed 6 selfloop flow, removed 22 redundant places. [2024-11-08 16:55:00,705 INFO L231 Difference]: Finished difference. Result has 313 places, 405 transitions, 9206 flow [2024-11-08 16:55:00,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8649, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9206, PETRI_PLACES=313, PETRI_TRANSITIONS=405} [2024-11-08 16:55:00,706 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-11-08 16:55:00,706 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 405 transitions, 9206 flow [2024-11-08 16:55:00,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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) [2024-11-08 16:55:00,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:00,706 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:00,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:55:00,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:00,907 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:55:00,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:00,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1508392358, now seen corresponding path program 1 times [2024-11-08 16:55:00,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:00,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29009260] [2024-11-08 16:55:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:00,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:01,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:01,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29009260] [2024-11-08 16:55:01,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29009260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:01,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571513832] [2024-11-08 16:55:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:01,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:01,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:01,015 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:01,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:55:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:01,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:55:01,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:01,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:01,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571513832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:01,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:01,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 16:55:01,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662869135] [2024-11-08 16:55:01,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:01,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:55:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:01,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:55:01,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:55:01,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-08 16:55:01,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 405 transitions, 9206 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 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) [2024-11-08 16:55:01,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:01,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-08 16:55:01,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:04,228 INFO L124 PetriNetUnfolderBase]: 4496/8558 cut-off events. [2024-11-08 16:55:04,229 INFO L125 PetriNetUnfolderBase]: For 137013/137013 co-relation queries the response was YES. [2024-11-08 16:55:04,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52862 conditions, 8558 events. 4496/8558 cut-off events. For 137013/137013 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 64081 event pairs, 805 based on Foata normal form. 1000/9541 useless extension candidates. Maximal degree in co-relation 52674. Up to 2528 conditions per place. [2024-11-08 16:55:04,376 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 585 selfloop transitions, 70 changer transitions 1/670 dead transitions. [2024-11-08 16:55:04,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 670 transitions, 15970 flow [2024-11-08 16:55:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:55:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 16:55:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-11-08 16:55:04,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6390977443609023 [2024-11-08 16:55:04,377 INFO L175 Difference]: Start difference. First operand has 313 places, 405 transitions, 9206 flow. Second operand 7 states and 170 transitions. [2024-11-08 16:55:04,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 670 transitions, 15970 flow [2024-11-08 16:55:05,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 670 transitions, 15776 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-08 16:55:05,266 INFO L231 Difference]: Finished difference. Result has 319 places, 419 transitions, 9591 flow [2024-11-08 16:55:05,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9076, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9591, PETRI_PLACES=319, PETRI_TRANSITIONS=419} [2024-11-08 16:55:05,267 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-11-08 16:55:05,268 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 419 transitions, 9591 flow [2024-11-08 16:55:05,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 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) [2024-11-08 16:55:05,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:05,269 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:05,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:55:05,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-08 16:55:05,469 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:55:05,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2076475244, now seen corresponding path program 2 times [2024-11-08 16:55:05,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:05,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259586972] [2024-11-08 16:55:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:05,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:05,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:05,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259586972] [2024-11-08 16:55:05,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259586972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:05,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771385002] [2024-11-08 16:55:05,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:55:05,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:05,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:05,581 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:05,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:55:05,791 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:55:05,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:55:05,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:55:05,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:05,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:05,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771385002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:05,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:05,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 16:55:05,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324709327] [2024-11-08 16:55:05,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:05,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:55:05,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:05,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:55:05,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:55:05,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-08 16:55:05,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 419 transitions, 9591 flow. Second operand has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 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) [2024-11-08 16:55:05,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:05,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-08 16:55:05,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:09,002 INFO L124 PetriNetUnfolderBase]: 5062/9598 cut-off events. [2024-11-08 16:55:09,002 INFO L125 PetriNetUnfolderBase]: For 146675/146677 co-relation queries the response was YES. [2024-11-08 16:55:09,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62186 conditions, 9598 events. 5062/9598 cut-off events. For 146675/146677 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 71191 event pairs, 1163 based on Foata normal form. 413/9993 useless extension candidates. Maximal degree in co-relation 61994. Up to 2460 conditions per place. [2024-11-08 16:55:09,151 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 537 selfloop transitions, 85 changer transitions 1/637 dead transitions. [2024-11-08 16:55:09,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 637 transitions, 14977 flow [2024-11-08 16:55:09,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:55:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 16:55:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-11-08 16:55:09,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466165413533834 [2024-11-08 16:55:09,153 INFO L175 Difference]: Start difference. First operand has 319 places, 419 transitions, 9591 flow. Second operand 7 states and 172 transitions. [2024-11-08 16:55:09,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 637 transitions, 14977 flow [2024-11-08 16:55:10,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 637 transitions, 14869 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-08 16:55:10,122 INFO L231 Difference]: Finished difference. Result has 325 places, 434 transitions, 10103 flow [2024-11-08 16:55:10,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9491, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10103, PETRI_PLACES=325, PETRI_TRANSITIONS=434} [2024-11-08 16:55:10,123 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-11-08 16:55:10,123 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 434 transitions, 10103 flow [2024-11-08 16:55:10,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 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) [2024-11-08 16:55:10,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:10,124 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:10,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 16:55:10,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-08 16:55:10,325 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:55:10,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2065948195, now seen corresponding path program 1 times [2024-11-08 16:55:10,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:10,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227957362] [2024-11-08 16:55:10,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:10,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:11,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:11,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227957362] [2024-11-08 16:55:11,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227957362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:11,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480302058] [2024-11-08 16:55:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:11,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:11,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:11,391 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:11,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:55:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:11,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 16:55:11,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:11,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:12,075 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-08 16:55:12,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-08 16:55:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:12,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480302058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:12,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:12,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-08 16:55:12,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885773924] [2024-11-08 16:55:12,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:12,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 16:55:12,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 16:55:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:55:12,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:55:12,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 434 transitions, 10103 flow. Second operand has 16 states, 16 states have (on average 17.6875) internal successors, (283), 16 states have internal predecessors, (283), 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) [2024-11-08 16:55:12,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:12,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:55:12,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:15,687 INFO L124 PetriNetUnfolderBase]: 3844/7891 cut-off events. [2024-11-08 16:55:15,687 INFO L125 PetriNetUnfolderBase]: For 126565/126565 co-relation queries the response was YES. [2024-11-08 16:55:15,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53229 conditions, 7891 events. 3844/7891 cut-off events. For 126565/126565 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 62396 event pairs, 328 based on Foata normal form. 56/7904 useless extension candidates. Maximal degree in co-relation 53035. Up to 1800 conditions per place. [2024-11-08 16:55:16,040 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 159 selfloop transitions, 334 changer transitions 1/514 dead transitions. [2024-11-08 16:55:16,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 514 transitions, 11818 flow [2024-11-08 16:55:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 16:55:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-08 16:55:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 393 transitions. [2024-11-08 16:55:16,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2024-11-08 16:55:16,042 INFO L175 Difference]: Start difference. First operand has 325 places, 434 transitions, 10103 flow. Second operand 18 states and 393 transitions. [2024-11-08 16:55:16,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 514 transitions, 11818 flow [2024-11-08 16:55:16,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 514 transitions, 11681 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-08 16:55:16,739 INFO L231 Difference]: Finished difference. Result has 340 places, 453 transitions, 11188 flow [2024-11-08 16:55:16,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9933, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11188, PETRI_PLACES=340, PETRI_TRANSITIONS=453} [2024-11-08 16:55:16,740 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 308 predicate places. [2024-11-08 16:55:16,741 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 453 transitions, 11188 flow [2024-11-08 16:55:16,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.6875) internal successors, (283), 16 states have internal predecessors, (283), 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) [2024-11-08 16:55:16,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:16,741 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:16,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:55:16,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:16,942 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:55:16,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:16,942 INFO L85 PathProgramCache]: Analyzing trace with hash 645423874, now seen corresponding path program 1 times [2024-11-08 16:55:16,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:16,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673258463] [2024-11-08 16:55:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:16,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:17,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673258463] [2024-11-08 16:55:17,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673258463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309641932] [2024-11-08 16:55:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:17,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:17,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:17,736 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:17,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:55:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:18,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 16:55:18,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:18,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:18,474 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-08 16:55:18,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-08 16:55:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:18,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309641932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:18,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:18,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-08 16:55:18,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871522631] [2024-11-08 16:55:18,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:18,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 16:55:18,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:18,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 16:55:18,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:55:18,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:55:18,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 453 transitions, 11188 flow. Second operand has 17 states, 17 states have (on average 17.470588235294116) internal successors, (297), 17 states have internal predecessors, (297), 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) [2024-11-08 16:55:18,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:18,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:55:18,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:22,255 INFO L124 PetriNetUnfolderBase]: 4187/8730 cut-off events. [2024-11-08 16:55:22,256 INFO L125 PetriNetUnfolderBase]: For 144494/144494 co-relation queries the response was YES. [2024-11-08 16:55:22,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59099 conditions, 8730 events. 4187/8730 cut-off events. For 144494/144494 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 71359 event pairs, 790 based on Foata normal form. 36/8739 useless extension candidates. Maximal degree in co-relation 58901. Up to 2629 conditions per place. [2024-11-08 16:55:22,389 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 282 selfloop transitions, 241 changer transitions 0/543 dead transitions. [2024-11-08 16:55:22,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 543 transitions, 13155 flow [2024-11-08 16:55:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 16:55:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-08 16:55:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 363 transitions. [2024-11-08 16:55:22,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5970394736842105 [2024-11-08 16:55:22,391 INFO L175 Difference]: Start difference. First operand has 340 places, 453 transitions, 11188 flow. Second operand 16 states and 363 transitions. [2024-11-08 16:55:22,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 543 transitions, 13155 flow [2024-11-08 16:55:23,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 543 transitions, 12827 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-08 16:55:23,341 INFO L231 Difference]: Finished difference. Result has 353 places, 480 transitions, 12162 flow [2024-11-08 16:55:23,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10845, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12162, PETRI_PLACES=353, PETRI_TRANSITIONS=480} [2024-11-08 16:55:23,342 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 321 predicate places. [2024-11-08 16:55:23,342 INFO L471 AbstractCegarLoop]: Abstraction has has 353 places, 480 transitions, 12162 flow [2024-11-08 16:55:23,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.470588235294116) internal successors, (297), 17 states have internal predecessors, (297), 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) [2024-11-08 16:55:23,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:23,343 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:23,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 16:55:23,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:23,544 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:55:23,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:23,545 INFO L85 PathProgramCache]: Analyzing trace with hash -468560323, now seen corresponding path program 2 times [2024-11-08 16:55:23,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:23,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156730513] [2024-11-08 16:55:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:23,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:24,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156730513] [2024-11-08 16:55:24,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156730513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415782697] [2024-11-08 16:55:24,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:55:24,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:24,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:24,577 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:24,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:55:24,785 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:55:24,785 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:55:24,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:55:24,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:25,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:25,415 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-08 16:55:25,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-08 16:55:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:25,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415782697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:25,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:25,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-11-08 16:55:25,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754604471] [2024-11-08 16:55:25,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:25,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 16:55:25,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:25,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 16:55:25,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:55:25,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:55:25,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 480 transitions, 12162 flow. Second operand has 16 states, 16 states have (on average 17.5) internal successors, (280), 16 states have internal predecessors, (280), 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) [2024-11-08 16:55:25,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:25,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:55:25,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:30,785 INFO L124 PetriNetUnfolderBase]: 5358/11119 cut-off events. [2024-11-08 16:55:30,785 INFO L125 PetriNetUnfolderBase]: For 180444/180444 co-relation queries the response was YES. [2024-11-08 16:55:30,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75203 conditions, 11119 events. 5358/11119 cut-off events. For 180444/180444 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 93989 event pairs, 828 based on Foata normal form. 41/11129 useless extension candidates. Maximal degree in co-relation 75000. Up to 2341 conditions per place. [2024-11-08 16:55:30,960 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 249 selfloop transitions, 406 changer transitions 4/679 dead transitions. [2024-11-08 16:55:30,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 679 transitions, 16185 flow [2024-11-08 16:55:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:55:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 16:55:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 553 transitions. [2024-11-08 16:55:30,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.606359649122807 [2024-11-08 16:55:30,962 INFO L175 Difference]: Start difference. First operand has 353 places, 480 transitions, 12162 flow. Second operand 24 states and 553 transitions. [2024-11-08 16:55:30,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 679 transitions, 16185 flow [2024-11-08 16:55:32,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 679 transitions, 15768 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-11-08 16:55:32,624 INFO L231 Difference]: Finished difference. Result has 378 places, 569 transitions, 15354 flow [2024-11-08 16:55:32,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11781, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=15354, PETRI_PLACES=378, PETRI_TRANSITIONS=569} [2024-11-08 16:55:32,625 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 346 predicate places. [2024-11-08 16:55:32,625 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 569 transitions, 15354 flow [2024-11-08 16:55:32,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.5) internal successors, (280), 16 states have internal predecessors, (280), 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) [2024-11-08 16:55:32,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:32,626 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:32,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 16:55:32,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 16:55:32,826 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:55:32,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:32,827 INFO L85 PathProgramCache]: Analyzing trace with hash 670881072, now seen corresponding path program 2 times [2024-11-08 16:55:32,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:32,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353232279] [2024-11-08 16:55:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:32,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:33,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353232279] [2024-11-08 16:55:33,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353232279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151137300] [2024-11-08 16:55:33,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:55:33,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:33,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:33,570 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:33,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:55:33,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:55:33,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:55:33,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:55:33,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:34,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 16:55:34,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 70 [2024-11-08 16:55:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:34,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:34,332 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-08 16:55:34,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 87 [2024-11-08 16:55:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:34,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151137300] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:34,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 16:55:34,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 9] total 18 [2024-11-08 16:55:34,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128798710] [2024-11-08 16:55:34,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:34,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:55:34,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:34,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:55:34,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-08 16:55:34,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:55:34,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 569 transitions, 15354 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 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) [2024-11-08 16:55:34,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:34,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:55:34,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:39,755 INFO L124 PetriNetUnfolderBase]: 5817/12177 cut-off events. [2024-11-08 16:55:39,755 INFO L125 PetriNetUnfolderBase]: For 214337/214337 co-relation queries the response was YES. [2024-11-08 16:55:39,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84112 conditions, 12177 events. 5817/12177 cut-off events. For 214337/214337 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 105648 event pairs, 1282 based on Foata normal form. 28/12158 useless extension candidates. Maximal degree in co-relation 83901. Up to 4113 conditions per place. [2024-11-08 16:55:39,989 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 362 selfloop transitions, 259 changer transitions 0/641 dead transitions. [2024-11-08 16:55:39,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 641 transitions, 17346 flow [2024-11-08 16:55:39,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 16:55:39,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 16:55:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-11-08 16:55:39,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-08 16:55:39,991 INFO L175 Difference]: Start difference. First operand has 378 places, 569 transitions, 15354 flow. Second operand 11 states and 266 transitions. [2024-11-08 16:55:39,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 641 transitions, 17346 flow [2024-11-08 16:55:42,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 641 transitions, 16893 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-11-08 16:55:42,232 INFO L231 Difference]: Finished difference. Result has 376 places, 584 transitions, 15874 flow [2024-11-08 16:55:42,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14870, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15874, PETRI_PLACES=376, PETRI_TRANSITIONS=584} [2024-11-08 16:55:42,233 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 344 predicate places. [2024-11-08 16:55:42,233 INFO L471 AbstractCegarLoop]: Abstraction has has 376 places, 584 transitions, 15874 flow [2024-11-08 16:55:42,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 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) [2024-11-08 16:55:42,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:42,233 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:42,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 16:55:42,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 16:55:42,434 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:55:42,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:42,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1872938435, now seen corresponding path program 3 times [2024-11-08 16:55:42,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:42,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795602678] [2024-11-08 16:55:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:42,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:43,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795602678] [2024-11-08 16:55:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795602678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144046401] [2024-11-08 16:55:43,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:55:43,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:43,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:43,262 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:43,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 16:55:43,452 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 16:55:43,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:55:43,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:55:43,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:43,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 16:55:43,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 70 [2024-11-08 16:55:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:43,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:44,027 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-08 16:55:44,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-08 16:55:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:44,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144046401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:44,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:44,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 18 [2024-11-08 16:55:44,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678766830] [2024-11-08 16:55:44,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:44,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 16:55:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 16:55:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-08 16:55:44,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:55:44,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 584 transitions, 15874 flow. Second operand has 18 states, 18 states have (on average 17.22222222222222) internal successors, (310), 18 states have internal predecessors, (310), 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) [2024-11-08 16:55:44,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:44,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:55:44,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:52,278 INFO L124 PetriNetUnfolderBase]: 7580/15717 cut-off events. [2024-11-08 16:55:52,279 INFO L125 PetriNetUnfolderBase]: For 305020/305020 co-relation queries the response was YES. [2024-11-08 16:55:52,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116731 conditions, 15717 events. 7580/15717 cut-off events. For 305020/305020 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 140774 event pairs, 1135 based on Foata normal form. 32/15700 useless extension candidates. Maximal degree in co-relation 116523. Up to 3372 conditions per place. [2024-11-08 16:55:52,573 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 268 selfloop transitions, 505 changer transitions 5/798 dead transitions. [2024-11-08 16:55:52,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 798 transitions, 20872 flow [2024-11-08 16:55:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 16:55:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-08 16:55:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 642 transitions. [2024-11-08 16:55:52,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5825771324863884 [2024-11-08 16:55:52,575 INFO L175 Difference]: Start difference. First operand has 376 places, 584 transitions, 15874 flow. Second operand 29 states and 642 transitions. [2024-11-08 16:55:52,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 798 transitions, 20872 flow [2024-11-08 16:55:54,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 798 transitions, 20592 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-08 16:55:54,808 INFO L231 Difference]: Finished difference. Result has 409 places, 682 transitions, 20110 flow [2024-11-08 16:55:54,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15414, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=20110, PETRI_PLACES=409, PETRI_TRANSITIONS=682} [2024-11-08 16:55:54,809 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 377 predicate places. [2024-11-08 16:55:54,809 INFO L471 AbstractCegarLoop]: Abstraction has has 409 places, 682 transitions, 20110 flow [2024-11-08 16:55:54,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.22222222222222) internal successors, (310), 18 states have internal predecessors, (310), 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) [2024-11-08 16:55:54,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:54,809 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:54,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 16:55:55,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c0b9b-dd30-4796-a5e0-c6544f5c4a4d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:55,010 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:55:55,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:55,011 INFO L85 PathProgramCache]: Analyzing trace with hash -987548313, now seen corresponding path program 4 times [2024-11-08 16:55:55,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:55,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108023285] [2024-11-08 16:55:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:55:55,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:55,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108023285] [2024-11-08 16:55:55,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108023285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:55,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:55,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 16:55:55,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607087292] [2024-11-08 16:55:55,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:55,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:55:55,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:55,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:55:55,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:55:55,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:55:55,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 682 transitions, 20110 flow. Second operand has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 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) [2024-11-08 16:55:55,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:55,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:55:55,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:56:03,248 INFO L124 PetriNetUnfolderBase]: 7572/15619 cut-off events. [2024-11-08 16:56:03,249 INFO L125 PetriNetUnfolderBase]: For 347846/347846 co-relation queries the response was YES. [2024-11-08 16:56:03,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123513 conditions, 15619 events. 7572/15619 cut-off events. For 347846/347846 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 139419 event pairs, 3764 based on Foata normal form. 4/15519 useless extension candidates. Maximal degree in co-relation 123294. Up to 11485 conditions per place. [2024-11-08 16:56:03,570 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 540 selfloop transitions, 137 changer transitions 3/700 dead transitions. [2024-11-08 16:56:03,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 700 transitions, 21368 flow [2024-11-08 16:56:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 16:56:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 16:56:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 255 transitions. [2024-11-08 16:56:03,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2024-11-08 16:56:03,572 INFO L175 Difference]: Start difference. First operand has 409 places, 682 transitions, 20110 flow. Second operand 12 states and 255 transitions. [2024-11-08 16:56:03,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 700 transitions, 21368 flow [2024-11-08 16:56:06,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 700 transitions, 20953 flow, removed 31 selfloop flow, removed 13 redundant places. [2024-11-08 16:56:06,723 INFO L231 Difference]: Finished difference. Result has 406 places, 674 transitions, 19778 flow [2024-11-08 16:56:06,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19524, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=19778, PETRI_PLACES=406, PETRI_TRANSITIONS=674} [2024-11-08 16:56:06,724 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-11-08 16:56:06,724 INFO L471 AbstractCegarLoop]: Abstraction has has 406 places, 674 transitions, 19778 flow [2024-11-08 16:56:06,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 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) [2024-11-08 16:56:06,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:56:06,725 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:06,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-08 16:56:06,725 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:56:06,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1820433952, now seen corresponding path program 3 times [2024-11-08 16:56:06,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:06,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522552452] [2024-11-08 16:56:06,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:06,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 16:56:07,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:07,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522552452] [2024-11-08 16:56:07,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522552452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:07,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:56:07,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 16:56:07,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155214624] [2024-11-08 16:56:07,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:07,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:56:07,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:56:07,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:56:07,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:56:07,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 674 transitions, 19778 flow. Second operand has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 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) [2024-11-08 16:56:07,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:56:07,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:56:07,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand