./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:07:05,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:07:05,866 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:07:05,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:07:05,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:07:05,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:07:05,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:07:05,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:07:05,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:07:05,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:07:05,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:07:05,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:07:05,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:07:05,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:07:05,929 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:07:05,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:07:05,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:07:05,929 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:07:05,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:07:05,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:07:05,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:07:05,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:07:05,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:07:05,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:07:05,930 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:07:05,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:07:05,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:07:05,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:07:05,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:07:05,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:07:05,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:07:05,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:07:05,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:07:05,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:07:05,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:07:05,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:07:05,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:07:05,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:07:05,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:07:05,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:07:05,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:07:05,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:07:05,936 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2024-11-13 16:07:06,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:07:06,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:07:06,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:07:06,374 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:07:06,374 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:07:06,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/test-easy11.wvr.c Unable to find full path for "g++" [2024-11-13 16:07:08,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:07:09,201 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:07:09,203 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-11-13 16:07:09,217 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/data/ed1d5f5af/fb85a1e9e9704c7bbefea6c48d6f00f1/FLAG868bf81f9 [2024-11-13 16:07:09,247 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/data/ed1d5f5af/fb85a1e9e9704c7bbefea6c48d6f00f1 [2024-11-13 16:07:09,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:07:09,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:07:09,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:07:09,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:07:09,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:07:09,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1941ff60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09, skipping insertion in model container [2024-11-13 16:07:09,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,294 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:07:09,512 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_c385f697-344d-4f46-b8f8-9866201aaf7c/sv-benchmarks/c/weaver/test-easy11.wvr.c[1841,1854] [2024-11-13 16:07:09,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:07:09,531 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:07:09,555 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_c385f697-344d-4f46-b8f8-9866201aaf7c/sv-benchmarks/c/weaver/test-easy11.wvr.c[1841,1854] [2024-11-13 16:07:09,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:07:09,588 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:07:09,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09 WrapperNode [2024-11-13 16:07:09,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:07:09,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:07:09,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:07:09,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:07:09,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,651 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2024-11-13 16:07:09,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:07:09,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:07:09,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:07:09,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:07:09,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,671 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,695 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 16:07:09,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,702 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:07:09,718 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:07:09,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:07:09,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:07:09,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (1/1) ... [2024-11-13 16:07:09,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:07:09,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:09,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:07:09,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:07:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:07:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 16:07:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 16:07:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 16:07:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 16:07:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:07:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:07:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:07:09,805 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 16:07:09,893 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:07:09,896 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:07:10,129 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 16:07:10,130 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:07:10,303 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:07:10,304 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 16:07:10,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:07:10 BoogieIcfgContainer [2024-11-13 16:07:10,304 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:07:10,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:07:10,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:07:10,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:07:10,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:07:09" (1/3) ... [2024-11-13 16:07:10,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2065d2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:07:10, skipping insertion in model container [2024-11-13 16:07:10,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:07:09" (2/3) ... [2024-11-13 16:07:10,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2065d2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:07:10, skipping insertion in model container [2024-11-13 16:07:10,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:07:10" (3/3) ... [2024-11-13 16:07:10,314 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-11-13 16:07:10,331 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:07:10,332 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy11.wvr.c that has 3 procedures, 21 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 16:07:10,332 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 16:07:10,391 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 16:07:10,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-11-13 16:07:10,482 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-13 16:07:10,484 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 16:07:10,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-13 16:07:10,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-11-13 16:07:10,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-11-13 16:07:10,501 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:07:10,518 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;@78ca3336, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:07:10,518 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-13 16:07:10,529 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:07:10,529 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-13 16:07:10,529 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 16:07:10,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:10,530 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:10,530 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:10,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:10,536 INFO L85 PathProgramCache]: Analyzing trace with hash -865001936, now seen corresponding path program 1 times [2024-11-13 16:07:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:10,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855681691] [2024-11-13 16:07:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:11,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:11,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855681691] [2024-11-13 16:07:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855681691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:11,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:11,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937915515] [2024-11-13 16:07:11,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:11,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:11,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:11,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:11,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:11,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:11,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:11,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:11,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:11,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:11,818 INFO L124 PetriNetUnfolderBase]: 111/201 cut-off events. [2024-11-13 16:07:11,819 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-13 16:07:11,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 201 events. 111/201 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 592 event pairs, 2 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 364. Up to 57 conditions per place. [2024-11-13 16:07:11,826 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 40 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2024-11-13 16:07:11,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 61 transitions, 278 flow [2024-11-13 16:07:11,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-13 16:07:11,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-13 16:07:11,847 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 9 states and 88 transitions. [2024-11-13 16:07:11,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 61 transitions, 278 flow [2024-11-13 16:07:11,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 16:07:11,861 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 107 flow [2024-11-13 16:07:11,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-11-13 16:07:11,869 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2024-11-13 16:07:11,870 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 107 flow [2024-11-13 16:07:11,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:11,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:11,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:11,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:07:11,872 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:11,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1417935462, now seen corresponding path program 2 times [2024-11-13 16:07:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:11,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711819718] [2024-11-13 16:07:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:12,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:12,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711819718] [2024-11-13 16:07:12,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711819718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:12,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:12,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:12,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586501759] [2024-11-13 16:07:12,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:12,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:12,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:12,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:12,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:12,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:12,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 107 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:12,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:12,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:12,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:12,617 INFO L124 PetriNetUnfolderBase]: 114/208 cut-off events. [2024-11-13 16:07:12,617 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-13 16:07:12,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 208 events. 114/208 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 606 event pairs, 14 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 575. Up to 115 conditions per place. [2024-11-13 16:07:12,625 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 34 selfloop transitions, 14 changer transitions 10/59 dead transitions. [2024-11-13 16:07:12,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 336 flow [2024-11-13 16:07:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-13 16:07:12,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-11-13 16:07:12,629 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 107 flow. Second operand 9 states and 83 transitions. [2024-11-13 16:07:12,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 336 flow [2024-11-13 16:07:12,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-13 16:07:12,671 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 190 flow [2024-11-13 16:07:12,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-11-13 16:07:12,672 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2024-11-13 16:07:12,672 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 190 flow [2024-11-13 16:07:12,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:12,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:12,673 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:12,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:07:12,677 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:12,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash 458960754, now seen corresponding path program 3 times [2024-11-13 16:07:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:12,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956333820] [2024-11-13 16:07:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:12,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:12,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956333820] [2024-11-13 16:07:12,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956333820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:12,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:12,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:12,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435774617] [2024-11-13 16:07:12,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:12,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:12,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:12,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:12,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:12,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:12,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 190 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:12,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:12,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:12,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:13,420 INFO L124 PetriNetUnfolderBase]: 119/216 cut-off events. [2024-11-13 16:07:13,420 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2024-11-13 16:07:13,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 216 events. 119/216 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 667 event pairs, 10 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 688. Up to 119 conditions per place. [2024-11-13 16:07:13,423 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 39 selfloop transitions, 18 changer transitions 9/67 dead transitions. [2024-11-13 16:07:13,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 450 flow [2024-11-13 16:07:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:13,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-13 16:07:13,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-13 16:07:13,426 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 190 flow. Second operand 9 states and 86 transitions. [2024-11-13 16:07:13,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 450 flow [2024-11-13 16:07:13,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 418 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-13 16:07:13,432 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 257 flow [2024-11-13 16:07:13,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-11-13 16:07:13,433 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2024-11-13 16:07:13,433 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 257 flow [2024-11-13 16:07:13,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:13,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:13,433 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:13,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:07:13,434 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:13,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:13,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1143397326, now seen corresponding path program 4 times [2024-11-13 16:07:13,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:13,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160910523] [2024-11-13 16:07:13,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:13,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:13,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:13,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160910523] [2024-11-13 16:07:13,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160910523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:13,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:13,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:13,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30214375] [2024-11-13 16:07:13,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:13,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:13,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:13,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:13,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:13,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:13,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 257 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:13,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:13,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:13,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:14,285 INFO L124 PetriNetUnfolderBase]: 140/247 cut-off events. [2024-11-13 16:07:14,286 INFO L125 PetriNetUnfolderBase]: For 421/421 co-relation queries the response was YES. [2024-11-13 16:07:14,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 247 events. 140/247 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 747 event pairs, 17 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 891. Up to 129 conditions per place. [2024-11-13 16:07:14,291 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 36 selfloop transitions, 26 changer transitions 9/72 dead transitions. [2024-11-13 16:07:14,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 573 flow [2024-11-13 16:07:14,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:14,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-13 16:07:14,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-13 16:07:14,295 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 257 flow. Second operand 9 states and 85 transitions. [2024-11-13 16:07:14,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 573 flow [2024-11-13 16:07:14,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 511 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-13 16:07:14,310 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 393 flow [2024-11-13 16:07:14,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=393, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-13 16:07:14,312 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2024-11-13 16:07:14,312 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 393 flow [2024-11-13 16:07:14,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:14,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:14,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:14,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:07:14,315 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:14,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:14,316 INFO L85 PathProgramCache]: Analyzing trace with hash 510758352, now seen corresponding path program 5 times [2024-11-13 16:07:14,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:14,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16655315] [2024-11-13 16:07:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:14,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:14,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:14,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16655315] [2024-11-13 16:07:14,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16655315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:14,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:14,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:14,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530820742] [2024-11-13 16:07:14,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:14,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:14,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:14,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:14,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:14,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 393 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:14,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:14,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:14,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:15,028 INFO L124 PetriNetUnfolderBase]: 139/247 cut-off events. [2024-11-13 16:07:15,028 INFO L125 PetriNetUnfolderBase]: For 572/572 co-relation queries the response was YES. [2024-11-13 16:07:15,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 247 events. 139/247 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 787 event pairs, 10 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 974. Up to 127 conditions per place. [2024-11-13 16:07:15,032 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 44 selfloop transitions, 23 changer transitions 12/80 dead transitions. [2024-11-13 16:07:15,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 688 flow [2024-11-13 16:07:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-13 16:07:15,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-13 16:07:15,034 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 393 flow. Second operand 9 states and 86 transitions. [2024-11-13 16:07:15,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 688 flow [2024-11-13 16:07:15,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 80 transitions, 643 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-13 16:07:15,042 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 389 flow [2024-11-13 16:07:15,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=389, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-11-13 16:07:15,043 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 34 predicate places. [2024-11-13 16:07:15,044 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 389 flow [2024-11-13 16:07:15,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:15,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:15,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:15,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:07:15,044 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:15,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash 103161528, now seen corresponding path program 6 times [2024-11-13 16:07:15,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:15,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563389309] [2024-11-13 16:07:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:15,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:15,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563389309] [2024-11-13 16:07:15,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563389309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:15,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:15,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:15,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216059689] [2024-11-13 16:07:15,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:15,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:15,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:15,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:15,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:15,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:15,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 389 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:15,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:15,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:15,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:15,677 INFO L124 PetriNetUnfolderBase]: 158/273 cut-off events. [2024-11-13 16:07:15,677 INFO L125 PetriNetUnfolderBase]: For 704/704 co-relation queries the response was YES. [2024-11-13 16:07:15,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 273 events. 158/273 cut-off events. For 704/704 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 861 event pairs, 14 based on Foata normal form. 1/274 useless extension candidates. Maximal degree in co-relation 1147. Up to 137 conditions per place. [2024-11-13 16:07:15,682 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 42 selfloop transitions, 31 changer transitions 9/83 dead transitions. [2024-11-13 16:07:15,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 768 flow [2024-11-13 16:07:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-13 16:07:15,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-13 16:07:15,686 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 389 flow. Second operand 9 states and 86 transitions. [2024-11-13 16:07:15,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 768 flow [2024-11-13 16:07:15,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 83 transitions, 702 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:15,694 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 555 flow [2024-11-13 16:07:15,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=555, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-11-13 16:07:15,699 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2024-11-13 16:07:15,699 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 555 flow [2024-11-13 16:07:15,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:15,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:15,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:15,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:07:15,700 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:15,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash -53227464, now seen corresponding path program 7 times [2024-11-13 16:07:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:15,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825819186] [2024-11-13 16:07:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:15,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:15,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:15,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825819186] [2024-11-13 16:07:15,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825819186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:15,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:15,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:15,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353738997] [2024-11-13 16:07:15,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:15,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:15,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:15,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:15,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:15,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:15,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 555 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:15,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:15,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:15,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:16,379 INFO L124 PetriNetUnfolderBase]: 167/288 cut-off events. [2024-11-13 16:07:16,380 INFO L125 PetriNetUnfolderBase]: For 1008/1008 co-relation queries the response was YES. [2024-11-13 16:07:16,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 288 events. 167/288 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 952 event pairs, 14 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 1301. Up to 140 conditions per place. [2024-11-13 16:07:16,384 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 53 selfloop transitions, 30 changer transitions 10/94 dead transitions. [2024-11-13 16:07:16,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 94 transitions, 923 flow [2024-11-13 16:07:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-13 16:07:16,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-13 16:07:16,387 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 555 flow. Second operand 9 states and 88 transitions. [2024-11-13 16:07:16,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 94 transitions, 923 flow [2024-11-13 16:07:16,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 846 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-11-13 16:07:16,398 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 578 flow [2024-11-13 16:07:16,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=578, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-11-13 16:07:16,400 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 41 predicate places. [2024-11-13 16:07:16,400 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 578 flow [2024-11-13 16:07:16,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:16,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:16,400 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:16,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:07:16,401 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:16,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:16,401 INFO L85 PathProgramCache]: Analyzing trace with hash -559573730, now seen corresponding path program 8 times [2024-11-13 16:07:16,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:16,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773974444] [2024-11-13 16:07:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:16,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:16,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:16,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773974444] [2024-11-13 16:07:16,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773974444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:16,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:16,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:16,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422462816] [2024-11-13 16:07:16,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:16,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:16,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:16,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:16,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:16,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:16,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 578 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:16,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:16,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:16,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:17,083 INFO L124 PetriNetUnfolderBase]: 177/308 cut-off events. [2024-11-13 16:07:17,083 INFO L125 PetriNetUnfolderBase]: For 1080/1080 co-relation queries the response was YES. [2024-11-13 16:07:17,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1404 conditions, 308 events. 177/308 cut-off events. For 1080/1080 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1040 event pairs, 12 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 1379. Up to 151 conditions per place. [2024-11-13 16:07:17,087 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 46 selfloop transitions, 34 changer transitions 10/91 dead transitions. [2024-11-13 16:07:17,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 907 flow [2024-11-13 16:07:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-11-13 16:07:17,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-11-13 16:07:17,090 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 578 flow. Second operand 9 states and 91 transitions. [2024-11-13 16:07:17,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 907 flow [2024-11-13 16:07:17,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 831 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:17,102 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 635 flow [2024-11-13 16:07:17,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-13 16:07:17,103 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2024-11-13 16:07:17,104 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 635 flow [2024-11-13 16:07:17,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:17,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:17,104 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:17,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:07:17,105 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:17,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:17,106 INFO L85 PathProgramCache]: Analyzing trace with hash -875212480, now seen corresponding path program 9 times [2024-11-13 16:07:17,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:17,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122843016] [2024-11-13 16:07:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:17,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:17,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:17,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122843016] [2024-11-13 16:07:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122843016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:17,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:17,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003068688] [2024-11-13 16:07:17,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:17,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:17,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:17,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:17,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:17,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 635 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:17,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:17,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:17,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:17,723 INFO L124 PetriNetUnfolderBase]: 172/303 cut-off events. [2024-11-13 16:07:17,724 INFO L125 PetriNetUnfolderBase]: For 1209/1209 co-relation queries the response was YES. [2024-11-13 16:07:17,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 303 events. 172/303 cut-off events. For 1209/1209 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1043 event pairs, 11 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 1394. Up to 165 conditions per place. [2024-11-13 16:07:17,727 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 30 changer transitions 12/87 dead transitions. [2024-11-13 16:07:17,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 900 flow [2024-11-13 16:07:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-13 16:07:17,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-13 16:07:17,729 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 635 flow. Second operand 9 states and 86 transitions. [2024-11-13 16:07:17,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 900 flow [2024-11-13 16:07:17,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 833 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-13 16:07:17,738 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 606 flow [2024-11-13 16:07:17,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=606, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-11-13 16:07:17,740 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2024-11-13 16:07:17,740 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 606 flow [2024-11-13 16:07:17,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:17,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:17,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:17,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 16:07:17,740 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:17,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:17,741 INFO L85 PathProgramCache]: Analyzing trace with hash 690188928, now seen corresponding path program 10 times [2024-11-13 16:07:17,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:17,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958116804] [2024-11-13 16:07:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:17,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:17,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:17,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958116804] [2024-11-13 16:07:17,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958116804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:17,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:17,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885371115] [2024-11-13 16:07:17,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:17,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:17,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:17,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:17,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:17,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 606 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:17,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:17,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:17,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:18,323 INFO L124 PetriNetUnfolderBase]: 164/288 cut-off events. [2024-11-13 16:07:18,323 INFO L125 PetriNetUnfolderBase]: For 1150/1150 co-relation queries the response was YES. [2024-11-13 16:07:18,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 288 events. 164/288 cut-off events. For 1150/1150 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 957 event pairs, 14 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 1304. Up to 153 conditions per place. [2024-11-13 16:07:18,329 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 30 changer transitions 10/85 dead transitions. [2024-11-13 16:07:18,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 875 flow [2024-11-13 16:07:18,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-13 16:07:18,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-13 16:07:18,331 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 606 flow. Second operand 9 states and 87 transitions. [2024-11-13 16:07:18,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 875 flow [2024-11-13 16:07:18,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 809 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:18,339 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 602 flow [2024-11-13 16:07:18,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-11-13 16:07:18,342 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 46 predicate places. [2024-11-13 16:07:18,343 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 602 flow [2024-11-13 16:07:18,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:18,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:18,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:18,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 16:07:18,344 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:18,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:18,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1968588502, now seen corresponding path program 11 times [2024-11-13 16:07:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:18,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030591095] [2024-11-13 16:07:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:18,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:18,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:18,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030591095] [2024-11-13 16:07:18,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030591095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:18,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:18,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:18,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007696154] [2024-11-13 16:07:18,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:18,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:18,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:18,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:18,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 602 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:18,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:18,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:18,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:18,840 INFO L124 PetriNetUnfolderBase]: 173/304 cut-off events. [2024-11-13 16:07:18,840 INFO L125 PetriNetUnfolderBase]: For 1167/1167 co-relation queries the response was YES. [2024-11-13 16:07:18,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 304 events. 173/304 cut-off events. For 1167/1167 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1038 event pairs, 12 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 1350. Up to 157 conditions per place. [2024-11-13 16:07:18,843 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 45 selfloop transitions, 32 changer transitions 9/87 dead transitions. [2024-11-13 16:07:18,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 87 transitions, 884 flow [2024-11-13 16:07:18,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-13 16:07:18,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-13 16:07:18,844 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 602 flow. Second operand 9 states and 86 transitions. [2024-11-13 16:07:18,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 87 transitions, 884 flow [2024-11-13 16:07:18,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 816 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-13 16:07:18,851 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 628 flow [2024-11-13 16:07:18,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=628, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2024-11-13 16:07:18,851 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-11-13 16:07:18,851 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 628 flow [2024-11-13 16:07:18,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:18,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:18,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:18,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 16:07:18,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:18,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash -358416704, now seen corresponding path program 12 times [2024-11-13 16:07:18,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:18,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373150629] [2024-11-13 16:07:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:18,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:18,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:18,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373150629] [2024-11-13 16:07:18,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373150629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:18,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:18,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:18,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035160205] [2024-11-13 16:07:18,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:18,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:18,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:18,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:18,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:18,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:18,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 628 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:18,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:18,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:18,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:19,260 INFO L124 PetriNetUnfolderBase]: 165/292 cut-off events. [2024-11-13 16:07:19,260 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2024-11-13 16:07:19,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 292 events. 165/292 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1001 event pairs, 12 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 1346. Up to 159 conditions per place. [2024-11-13 16:07:19,263 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 28 changer transitions 11/84 dead transitions. [2024-11-13 16:07:19,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 880 flow [2024-11-13 16:07:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-13 16:07:19,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-13 16:07:19,264 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 628 flow. Second operand 9 states and 85 transitions. [2024-11-13 16:07:19,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 880 flow [2024-11-13 16:07:19,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 804 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:19,272 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 579 flow [2024-11-13 16:07:19,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-11-13 16:07:19,272 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-11-13 16:07:19,273 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 579 flow [2024-11-13 16:07:19,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:19,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:19,273 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:19,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 16:07:19,273 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:19,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1678627128, now seen corresponding path program 13 times [2024-11-13 16:07:19,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:19,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985991153] [2024-11-13 16:07:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:19,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:19,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985991153] [2024-11-13 16:07:19,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985991153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:19,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:19,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:19,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459551763] [2024-11-13 16:07:19,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:19,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:19,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:19,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:19,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:19,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:19,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 579 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:19,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:19,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:19,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:19,782 INFO L124 PetriNetUnfolderBase]: 162/287 cut-off events. [2024-11-13 16:07:19,782 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2024-11-13 16:07:19,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 287 events. 162/287 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 937 event pairs, 18 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 1280. Up to 157 conditions per place. [2024-11-13 16:07:19,785 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 43 selfloop transitions, 30 changer transitions 9/83 dead transitions. [2024-11-13 16:07:19,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 866 flow [2024-11-13 16:07:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-11-13 16:07:19,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-11-13 16:07:19,787 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 579 flow. Second operand 9 states and 84 transitions. [2024-11-13 16:07:19,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 866 flow [2024-11-13 16:07:19,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 800 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-13 16:07:19,798 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 622 flow [2024-11-13 16:07:19,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=622, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-11-13 16:07:19,800 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2024-11-13 16:07:19,801 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 622 flow [2024-11-13 16:07:19,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:19,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:19,801 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:19,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 16:07:19,802 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:19,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:19,803 INFO L85 PathProgramCache]: Analyzing trace with hash 398319690, now seen corresponding path program 14 times [2024-11-13 16:07:19,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:19,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726075075] [2024-11-13 16:07:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:19,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:20,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726075075] [2024-11-13 16:07:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726075075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:20,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:20,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:20,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039718106] [2024-11-13 16:07:20,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:20,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:20,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:20,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:20,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:20,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:20,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 622 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:20,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:20,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:20,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:20,342 INFO L124 PetriNetUnfolderBase]: 168/297 cut-off events. [2024-11-13 16:07:20,342 INFO L125 PetriNetUnfolderBase]: For 1349/1349 co-relation queries the response was YES. [2024-11-13 16:07:20,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 297 events. 168/297 cut-off events. For 1349/1349 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 992 event pairs, 9 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 1356. Up to 111 conditions per place. [2024-11-13 16:07:20,345 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 52 selfloop transitions, 26 changer transitions 9/88 dead transitions. [2024-11-13 16:07:20,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 945 flow [2024-11-13 16:07:20,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-11-13 16:07:20,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-13 16:07:20,347 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 622 flow. Second operand 9 states and 81 transitions. [2024-11-13 16:07:20,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 945 flow [2024-11-13 16:07:20,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 892 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-13 16:07:20,358 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 645 flow [2024-11-13 16:07:20,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=645, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-11-13 16:07:20,358 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 54 predicate places. [2024-11-13 16:07:20,359 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 645 flow [2024-11-13 16:07:20,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:20,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:20,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:20,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 16:07:20,359 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:20,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1469733060, now seen corresponding path program 15 times [2024-11-13 16:07:20,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:20,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077185253] [2024-11-13 16:07:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:20,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:20,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:20,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077185253] [2024-11-13 16:07:20,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077185253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:20,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:20,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:20,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591334913] [2024-11-13 16:07:20,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:20,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:20,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:20,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:20,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:20,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:20,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 645 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:20,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:20,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:20,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:20,872 INFO L124 PetriNetUnfolderBase]: 164/293 cut-off events. [2024-11-13 16:07:20,873 INFO L125 PetriNetUnfolderBase]: For 1419/1419 co-relation queries the response was YES. [2024-11-13 16:07:20,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1393 conditions, 293 events. 164/293 cut-off events. For 1419/1419 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 991 event pairs, 18 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 1362. Up to 163 conditions per place. [2024-11-13 16:07:20,876 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 49 selfloop transitions, 24 changer transitions 11/85 dead transitions. [2024-11-13 16:07:20,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 944 flow [2024-11-13 16:07:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:20,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-11-13 16:07:20,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-13 16:07:20,878 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 645 flow. Second operand 9 states and 81 transitions. [2024-11-13 16:07:20,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 944 flow [2024-11-13 16:07:20,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 859 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:20,889 INFO L231 Difference]: Finished difference. Result has 79 places, 62 transitions, 592 flow [2024-11-13 16:07:20,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=592, PETRI_PLACES=79, PETRI_TRANSITIONS=62} [2024-11-13 16:07:20,890 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 55 predicate places. [2024-11-13 16:07:20,890 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 62 transitions, 592 flow [2024-11-13 16:07:20,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:20,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:20,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:20,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 16:07:20,891 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:20,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 395693914, now seen corresponding path program 16 times [2024-11-13 16:07:20,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:20,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210585163] [2024-11-13 16:07:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:20,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:21,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:21,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210585163] [2024-11-13 16:07:21,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210585163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:21,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:21,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:21,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738485727] [2024-11-13 16:07:21,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:21,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:21,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:21,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:21,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:21,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 592 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:21,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:21,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:21,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:21,390 INFO L124 PetriNetUnfolderBase]: 169/300 cut-off events. [2024-11-13 16:07:21,390 INFO L125 PetriNetUnfolderBase]: For 1367/1367 co-relation queries the response was YES. [2024-11-13 16:07:21,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 300 events. 169/300 cut-off events. For 1367/1367 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1004 event pairs, 19 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 1338. Up to 165 conditions per place. [2024-11-13 16:07:21,393 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 51 selfloop transitions, 25 changer transitions 9/86 dead transitions. [2024-11-13 16:07:21,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 916 flow [2024-11-13 16:07:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:21,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-11-13 16:07:21,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-11-13 16:07:21,396 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 592 flow. Second operand 9 states and 82 transitions. [2024-11-13 16:07:21,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 916 flow [2024-11-13 16:07:21,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 862 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:21,408 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 616 flow [2024-11-13 16:07:21,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=616, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-11-13 16:07:21,409 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 55 predicate places. [2024-11-13 16:07:21,409 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 616 flow [2024-11-13 16:07:21,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:21,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:21,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:21,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 16:07:21,411 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:21,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:21,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1730424726, now seen corresponding path program 17 times [2024-11-13 16:07:21,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:21,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600532314] [2024-11-13 16:07:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:21,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:21,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:21,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600532314] [2024-11-13 16:07:21,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600532314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:21,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:21,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:21,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842698771] [2024-11-13 16:07:21,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:21,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:21,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:21,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:21,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:21,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:21,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 616 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:21,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:21,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:21,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:21,869 INFO L124 PetriNetUnfolderBase]: 166/298 cut-off events. [2024-11-13 16:07:21,869 INFO L125 PetriNetUnfolderBase]: For 1466/1466 co-relation queries the response was YES. [2024-11-13 16:07:21,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 298 events. 166/298 cut-off events. For 1466/1466 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1025 event pairs, 18 based on Foata normal form. 1/299 useless extension candidates. Maximal degree in co-relation 1342. Up to 169 conditions per place. [2024-11-13 16:07:21,872 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 26 changer transitions 12/83 dead transitions. [2024-11-13 16:07:21,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 881 flow [2024-11-13 16:07:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-13 16:07:21,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-11-13 16:07:21,873 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 616 flow. Second operand 9 states and 83 transitions. [2024-11-13 16:07:21,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 881 flow [2024-11-13 16:07:21,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 813 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:21,882 INFO L231 Difference]: Finished difference. Result has 80 places, 61 transitions, 579 flow [2024-11-13 16:07:21,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2024-11-13 16:07:21,883 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2024-11-13 16:07:21,883 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 579 flow [2024-11-13 16:07:21,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:21,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:21,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:21,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 16:07:21,884 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:21,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:21,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1286142996, now seen corresponding path program 18 times [2024-11-13 16:07:21,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:21,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419875074] [2024-11-13 16:07:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:21,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:22,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:22,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419875074] [2024-11-13 16:07:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419875074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:22,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:22,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993266856] [2024-11-13 16:07:22,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:22,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:22,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:22,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:22,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:22,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 579 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:22,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:22,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:22,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:22,329 INFO L124 PetriNetUnfolderBase]: 170/303 cut-off events. [2024-11-13 16:07:22,329 INFO L125 PetriNetUnfolderBase]: For 1540/1540 co-relation queries the response was YES. [2024-11-13 16:07:22,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 303 events. 170/303 cut-off events. For 1540/1540 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1029 event pairs, 20 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 1345. Up to 171 conditions per place. [2024-11-13 16:07:22,331 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 47 selfloop transitions, 26 changer transitions 9/83 dead transitions. [2024-11-13 16:07:22,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 871 flow [2024-11-13 16:07:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:22,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-13 16:07:22,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-13 16:07:22,333 INFO L175 Difference]: Start difference. First operand has 80 places, 61 transitions, 579 flow. Second operand 9 states and 86 transitions. [2024-11-13 16:07:22,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 871 flow [2024-11-13 16:07:22,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 815 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:22,341 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 603 flow [2024-11-13 16:07:22,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=603, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-11-13 16:07:22,342 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2024-11-13 16:07:22,342 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 603 flow [2024-11-13 16:07:22,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:22,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:22,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:22,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 16:07:22,343 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:22,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 480662068, now seen corresponding path program 19 times [2024-11-13 16:07:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:22,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52273102] [2024-11-13 16:07:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:22,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:22,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:22,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52273102] [2024-11-13 16:07:22,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52273102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:22,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:22,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:22,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041867049] [2024-11-13 16:07:22,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:22,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:22,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:22,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:22,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:22,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 603 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:22,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:22,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:22,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:22,858 INFO L124 PetriNetUnfolderBase]: 182/326 cut-off events. [2024-11-13 16:07:22,858 INFO L125 PetriNetUnfolderBase]: For 1742/1742 co-relation queries the response was YES. [2024-11-13 16:07:22,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 326 events. 182/326 cut-off events. For 1742/1742 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1151 event pairs, 20 based on Foata normal form. 1/327 useless extension candidates. Maximal degree in co-relation 1441. Up to 183 conditions per place. [2024-11-13 16:07:22,862 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 48 selfloop transitions, 28 changer transitions 10/87 dead transitions. [2024-11-13 16:07:22,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 910 flow [2024-11-13 16:07:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-13 16:07:22,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-13 16:07:22,864 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 603 flow. Second operand 9 states and 86 transitions. [2024-11-13 16:07:22,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 910 flow [2024-11-13 16:07:22,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 838 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:22,874 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 616 flow [2024-11-13 16:07:22,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=616, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2024-11-13 16:07:22,875 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2024-11-13 16:07:22,875 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 616 flow [2024-11-13 16:07:22,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:22,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:22,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:22,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 16:07:22,876 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:22,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash 165023318, now seen corresponding path program 20 times [2024-11-13 16:07:22,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:22,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92016524] [2024-11-13 16:07:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:22,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:23,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:23,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92016524] [2024-11-13 16:07:23,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92016524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:23,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:23,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:07:23,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001117768] [2024-11-13 16:07:23,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:23,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:07:23,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:23,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 616 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:23,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:23,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:23,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:23,425 INFO L124 PetriNetUnfolderBase]: 172/311 cut-off events. [2024-11-13 16:07:23,426 INFO L125 PetriNetUnfolderBase]: For 1668/1668 co-relation queries the response was YES. [2024-11-13 16:07:23,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 311 events. 172/311 cut-off events. For 1668/1668 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1071 event pairs, 23 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 1397. Up to 185 conditions per place. [2024-11-13 16:07:23,430 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 46 selfloop transitions, 24 changer transitions 12/83 dead transitions. [2024-11-13 16:07:23,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 884 flow [2024-11-13 16:07:23,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:23,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-11-13 16:07:23,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-11-13 16:07:23,432 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 616 flow. Second operand 9 states and 84 transitions. [2024-11-13 16:07:23,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 884 flow [2024-11-13 16:07:23,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 818 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:23,443 INFO L231 Difference]: Finished difference. Result has 82 places, 61 transitions, 568 flow [2024-11-13 16:07:23,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=568, PETRI_PLACES=82, PETRI_TRANSITIONS=61} [2024-11-13 16:07:23,445 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2024-11-13 16:07:23,445 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 61 transitions, 568 flow [2024-11-13 16:07:23,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:23,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:23,446 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:23,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 16:07:23,446 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:23,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:23,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1616876876, now seen corresponding path program 1 times [2024-11-13 16:07:23,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:23,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864914123] [2024-11-13 16:07:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:23,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:23,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:23,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864914123] [2024-11-13 16:07:23,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864914123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:23,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:23,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:07:23,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988317538] [2024-11-13 16:07:23,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:23,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:07:23,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:23,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:07:23,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:07:23,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:07:23,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 61 transitions, 568 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:23,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:23,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:07:23,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:23,762 INFO L124 PetriNetUnfolderBase]: 209/410 cut-off events. [2024-11-13 16:07:23,762 INFO L125 PetriNetUnfolderBase]: For 2493/2493 co-relation queries the response was YES. [2024-11-13 16:07:23,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 410 events. 209/410 cut-off events. For 2493/2493 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1766 event pairs, 26 based on Foata normal form. 12/422 useless extension candidates. Maximal degree in co-relation 1883. Up to 110 conditions per place. [2024-11-13 16:07:23,769 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 56 selfloop transitions, 28 changer transitions 4/103 dead transitions. [2024-11-13 16:07:23,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 103 transitions, 1073 flow [2024-11-13 16:07:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:07:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 16:07:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-11-13 16:07:23,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-13 16:07:23,771 INFO L175 Difference]: Start difference. First operand has 82 places, 61 transitions, 568 flow. Second operand 7 states and 84 transitions. [2024-11-13 16:07:23,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 103 transitions, 1073 flow [2024-11-13 16:07:23,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 103 transitions, 1011 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-13 16:07:23,784 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 793 flow [2024-11-13 16:07:23,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=793, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-11-13 16:07:23,785 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2024-11-13 16:07:23,785 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 793 flow [2024-11-13 16:07:23,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:23,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:23,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:23,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 16:07:23,786 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:23,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2018954612, now seen corresponding path program 2 times [2024-11-13 16:07:23,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:23,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948740552] [2024-11-13 16:07:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:23,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:23,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:23,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948740552] [2024-11-13 16:07:23,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948740552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:23,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:23,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:07:23,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856773512] [2024-11-13 16:07:23,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:23,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:07:23,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:23,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:07:23,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:07:23,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:07:23,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 793 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:23,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:23,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:07:23,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:24,051 INFO L124 PetriNetUnfolderBase]: 236/465 cut-off events. [2024-11-13 16:07:24,051 INFO L125 PetriNetUnfolderBase]: For 3906/3906 co-relation queries the response was YES. [2024-11-13 16:07:24,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 465 events. 236/465 cut-off events. For 3906/3906 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2035 event pairs, 45 based on Foata normal form. 8/471 useless extension candidates. Maximal degree in co-relation 2180. Up to 204 conditions per place. [2024-11-13 16:07:24,056 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 67 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2024-11-13 16:07:24,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 1164 flow [2024-11-13 16:07:24,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:07:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:07:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-13 16:07:24,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2024-11-13 16:07:24,058 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 793 flow. Second operand 5 states and 72 transitions. [2024-11-13 16:07:24,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 103 transitions, 1164 flow [2024-11-13 16:07:24,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 103 transitions, 1069 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-11-13 16:07:24,078 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 860 flow [2024-11-13 16:07:24,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=860, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-11-13 16:07:24,079 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 62 predicate places. [2024-11-13 16:07:24,079 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 860 flow [2024-11-13 16:07:24,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:24,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:24,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:24,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 16:07:24,080 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:24,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:24,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1556291617, now seen corresponding path program 1 times [2024-11-13 16:07:24,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:24,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737480422] [2024-11-13 16:07:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:24,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:24,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:24,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737480422] [2024-11-13 16:07:24,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737480422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:24,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726275448] [2024-11-13 16:07:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:24,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:24,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:24,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:07:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:24,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:07:24,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:24,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726275448] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:24,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:07:24,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-11-13 16:07:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883616478] [2024-11-13 16:07:24,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:24,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:07:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:07:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:07:24,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:07:24,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 860 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:24,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:24,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:07:24,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:24,632 INFO L124 PetriNetUnfolderBase]: 319/657 cut-off events. [2024-11-13 16:07:24,632 INFO L125 PetriNetUnfolderBase]: For 4592/4600 co-relation queries the response was YES. [2024-11-13 16:07:24,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 657 events. 319/657 cut-off events. For 4592/4600 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3379 event pairs, 18 based on Foata normal form. 17/670 useless extension candidates. Maximal degree in co-relation 2675. Up to 297 conditions per place. [2024-11-13 16:07:24,641 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 62 selfloop transitions, 34 changer transitions 0/111 dead transitions. [2024-11-13 16:07:24,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 111 transitions, 1289 flow [2024-11-13 16:07:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:07:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:07:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-13 16:07:24,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-13 16:07:24,643 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 860 flow. Second operand 5 states and 71 transitions. [2024-11-13 16:07:24,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 111 transitions, 1289 flow [2024-11-13 16:07:24,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 1218 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-11-13 16:07:24,666 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 1040 flow [2024-11-13 16:07:24,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1040, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2024-11-13 16:07:24,667 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2024-11-13 16:07:24,667 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 1040 flow [2024-11-13 16:07:24,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:24,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:24,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:24,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:07:24,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:24,869 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:24,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:24,870 INFO L85 PathProgramCache]: Analyzing trace with hash 608054870, now seen corresponding path program 3 times [2024-11-13 16:07:24,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:24,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631154730] [2024-11-13 16:07:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:24,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:24,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:24,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631154730] [2024-11-13 16:07:24,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631154730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:24,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:24,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:07:24,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989490634] [2024-11-13 16:07:24,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:24,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:07:24,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:24,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:07:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:07:24,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:07:24,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 1040 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:24,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:24,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:07:24,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:25,215 INFO L124 PetriNetUnfolderBase]: 308/647 cut-off events. [2024-11-13 16:07:25,216 INFO L125 PetriNetUnfolderBase]: For 4813/4821 co-relation queries the response was YES. [2024-11-13 16:07:25,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 647 events. 308/647 cut-off events. For 4813/4821 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3349 event pairs, 42 based on Foata normal form. 15/660 useless extension candidates. Maximal degree in co-relation 2983. Up to 154 conditions per place. [2024-11-13 16:07:25,224 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 72 selfloop transitions, 30 changer transitions 4/121 dead transitions. [2024-11-13 16:07:25,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 121 transitions, 1462 flow [2024-11-13 16:07:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:07:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 16:07:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-11-13 16:07:25,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-13 16:07:25,226 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 1040 flow. Second operand 8 states and 99 transitions. [2024-11-13 16:07:25,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 121 transitions, 1462 flow [2024-11-13 16:07:25,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 121 transitions, 1436 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-13 16:07:25,254 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 1081 flow [2024-11-13 16:07:25,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1081, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-11-13 16:07:25,256 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 75 predicate places. [2024-11-13 16:07:25,256 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 1081 flow [2024-11-13 16:07:25,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:25,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:25,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:25,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 16:07:25,258 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:25,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:25,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1771479617, now seen corresponding path program 2 times [2024-11-13 16:07:25,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:25,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716105540] [2024-11-13 16:07:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:25,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:25,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:25,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716105540] [2024-11-13 16:07:25,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716105540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:25,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:25,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:07:25,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126364287] [2024-11-13 16:07:25,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:25,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:07:25,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:07:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:07:25,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:07:25,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 1081 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:25,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:25,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:07:25,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:25,557 INFO L124 PetriNetUnfolderBase]: 271/571 cut-off events. [2024-11-13 16:07:25,558 INFO L125 PetriNetUnfolderBase]: For 4581/4589 co-relation queries the response was YES. [2024-11-13 16:07:25,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 571 events. 271/571 cut-off events. For 4581/4589 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2872 event pairs, 19 based on Foata normal form. 20/591 useless extension candidates. Maximal degree in co-relation 2757. Up to 170 conditions per place. [2024-11-13 16:07:25,564 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 64 selfloop transitions, 24 changer transitions 3/105 dead transitions. [2024-11-13 16:07:25,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 1396 flow [2024-11-13 16:07:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:07:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 16:07:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-11-13 16:07:25,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-11-13 16:07:25,568 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 1081 flow. Second operand 6 states and 74 transitions. [2024-11-13 16:07:25,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 1396 flow [2024-11-13 16:07:25,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 1340 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-13 16:07:25,596 INFO L231 Difference]: Finished difference. Result has 102 places, 79 transitions, 987 flow [2024-11-13 16:07:25,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=987, PETRI_PLACES=102, PETRI_TRANSITIONS=79} [2024-11-13 16:07:25,597 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 78 predicate places. [2024-11-13 16:07:25,597 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 79 transitions, 987 flow [2024-11-13 16:07:25,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:25,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:25,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:25,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 16:07:25,600 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:25,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:25,600 INFO L85 PathProgramCache]: Analyzing trace with hash 163584054, now seen corresponding path program 4 times [2024-11-13 16:07:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:25,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253236619] [2024-11-13 16:07:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:25,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:25,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:25,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253236619] [2024-11-13 16:07:25,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253236619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:25,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:25,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:07:25,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278367621] [2024-11-13 16:07:25,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:25,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:07:25,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:25,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:07:25,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:07:25,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:07:25,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 79 transitions, 987 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:25,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:25,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:07:25,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:25,878 INFO L124 PetriNetUnfolderBase]: 241/496 cut-off events. [2024-11-13 16:07:25,878 INFO L125 PetriNetUnfolderBase]: For 4475/4481 co-relation queries the response was YES. [2024-11-13 16:07:25,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2540 conditions, 496 events. 241/496 cut-off events. For 4475/4481 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2319 event pairs, 26 based on Foata normal form. 14/506 useless extension candidates. Maximal degree in co-relation 2425. Up to 268 conditions per place. [2024-11-13 16:07:25,884 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 58 selfloop transitions, 21 changer transitions 1/94 dead transitions. [2024-11-13 16:07:25,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 1192 flow [2024-11-13 16:07:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:07:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:07:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-11-13 16:07:25,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-13 16:07:25,886 INFO L175 Difference]: Start difference. First operand has 102 places, 79 transitions, 987 flow. Second operand 5 states and 65 transitions. [2024-11-13 16:07:25,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 1192 flow [2024-11-13 16:07:25,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 94 transitions, 1140 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-13 16:07:25,908 INFO L231 Difference]: Finished difference. Result has 99 places, 77 transitions, 927 flow [2024-11-13 16:07:25,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=927, PETRI_PLACES=99, PETRI_TRANSITIONS=77} [2024-11-13 16:07:25,909 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 75 predicate places. [2024-11-13 16:07:25,909 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 77 transitions, 927 flow [2024-11-13 16:07:25,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:25,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:25,910 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:25,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-13 16:07:25,910 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:25,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:25,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1492820933, now seen corresponding path program 3 times [2024-11-13 16:07:25,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:25,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708557927] [2024-11-13 16:07:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:25,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:25,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:25,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708557927] [2024-11-13 16:07:25,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708557927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:25,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:25,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:07:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448976826] [2024-11-13 16:07:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:25,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:07:25,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:25,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:07:25,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:07:25,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:07:25,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 77 transitions, 927 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:25,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:25,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:07:25,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:26,200 INFO L124 PetriNetUnfolderBase]: 313/623 cut-off events. [2024-11-13 16:07:26,201 INFO L125 PetriNetUnfolderBase]: For 5161/5165 co-relation queries the response was YES. [2024-11-13 16:07:26,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3243 conditions, 623 events. 313/623 cut-off events. For 5161/5165 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3049 event pairs, 93 based on Foata normal form. 11/627 useless extension candidates. Maximal degree in co-relation 3077. Up to 373 conditions per place. [2024-11-13 16:07:26,208 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 68 selfloop transitions, 31 changer transitions 0/113 dead transitions. [2024-11-13 16:07:26,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 113 transitions, 1493 flow [2024-11-13 16:07:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:07:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:07:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-11-13 16:07:26,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2024-11-13 16:07:26,210 INFO L175 Difference]: Start difference. First operand has 99 places, 77 transitions, 927 flow. Second operand 5 states and 68 transitions. [2024-11-13 16:07:26,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 113 transitions, 1493 flow [2024-11-13 16:07:26,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 113 transitions, 1410 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-11-13 16:07:26,235 INFO L231 Difference]: Finished difference. Result has 97 places, 92 transitions, 1212 flow [2024-11-13 16:07:26,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1212, PETRI_PLACES=97, PETRI_TRANSITIONS=92} [2024-11-13 16:07:26,236 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 73 predicate places. [2024-11-13 16:07:26,236 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 92 transitions, 1212 flow [2024-11-13 16:07:26,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:26,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:26,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:26,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-13 16:07:26,237 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:26,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:26,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1591605799, now seen corresponding path program 4 times [2024-11-13 16:07:26,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:26,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746765076] [2024-11-13 16:07:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:26,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:26,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746765076] [2024-11-13 16:07:26,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746765076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:26,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:26,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:07:26,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634980569] [2024-11-13 16:07:26,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:26,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:07:26,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:07:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:07:26,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:07:26,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 1212 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:26,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:26,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:07:26,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:26,559 INFO L124 PetriNetUnfolderBase]: 303/613 cut-off events. [2024-11-13 16:07:26,559 INFO L125 PetriNetUnfolderBase]: For 5145/5149 co-relation queries the response was YES. [2024-11-13 16:07:26,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 613 events. 303/613 cut-off events. For 5145/5149 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3046 event pairs, 57 based on Foata normal form. 12/622 useless extension candidates. Maximal degree in co-relation 2414. Up to 227 conditions per place. [2024-11-13 16:07:26,566 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 65 selfloop transitions, 32 changer transitions 3/114 dead transitions. [2024-11-13 16:07:26,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 114 transitions, 1564 flow [2024-11-13 16:07:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:07:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 16:07:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-13 16:07:26,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194805194805194 [2024-11-13 16:07:26,568 INFO L175 Difference]: Start difference. First operand has 97 places, 92 transitions, 1212 flow. Second operand 7 states and 80 transitions. [2024-11-13 16:07:26,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 114 transitions, 1564 flow [2024-11-13 16:07:26,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 114 transitions, 1544 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-13 16:07:26,594 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 1266 flow [2024-11-13 16:07:26,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1266, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2024-11-13 16:07:26,595 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 80 predicate places. [2024-11-13 16:07:26,595 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 1266 flow [2024-11-13 16:07:26,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:26,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:26,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:26,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-13 16:07:26,596 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:26,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash 411059049, now seen corresponding path program 5 times [2024-11-13 16:07:26,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128011521] [2024-11-13 16:07:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:26,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:26,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:26,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128011521] [2024-11-13 16:07:26,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128011521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:26,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:26,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:07:26,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835783788] [2024-11-13 16:07:26,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:26,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:07:26,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:26,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:07:26,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:07:26,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:07:26,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 1266 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:26,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:26,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:07:26,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:26,916 INFO L124 PetriNetUnfolderBase]: 267/532 cut-off events. [2024-11-13 16:07:26,916 INFO L125 PetriNetUnfolderBase]: For 4836/4838 co-relation queries the response was YES. [2024-11-13 16:07:26,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 532 events. 267/532 cut-off events. For 4836/4838 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2469 event pairs, 40 based on Foata normal form. 6/536 useless extension candidates. Maximal degree in co-relation 2323. Up to 146 conditions per place. [2024-11-13 16:07:26,923 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 63 selfloop transitions, 33 changer transitions 2/112 dead transitions. [2024-11-13 16:07:26,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 1545 flow [2024-11-13 16:07:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:07:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 16:07:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-11-13 16:07:26,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2024-11-13 16:07:26,925 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 1266 flow. Second operand 8 states and 91 transitions. [2024-11-13 16:07:26,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 1545 flow [2024-11-13 16:07:26,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 112 transitions, 1495 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-13 16:07:26,950 INFO L231 Difference]: Finished difference. Result has 108 places, 87 transitions, 1205 flow [2024-11-13 16:07:26,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1205, PETRI_PLACES=108, PETRI_TRANSITIONS=87} [2024-11-13 16:07:26,951 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 84 predicate places. [2024-11-13 16:07:26,951 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 87 transitions, 1205 flow [2024-11-13 16:07:26,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:26,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:26,952 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:26,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-13 16:07:26,952 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:26,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1504373760, now seen corresponding path program 5 times [2024-11-13 16:07:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:26,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494221495] [2024-11-13 16:07:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:26,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:27,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:27,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494221495] [2024-11-13 16:07:27,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494221495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:27,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:07:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:07:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942542064] [2024-11-13 16:07:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:27,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:07:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:07:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:07:27,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:07:27,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 87 transitions, 1205 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:27,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:27,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:07:27,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:27,237 INFO L124 PetriNetUnfolderBase]: 228/458 cut-off events. [2024-11-13 16:07:27,237 INFO L125 PetriNetUnfolderBase]: For 4710/4712 co-relation queries the response was YES. [2024-11-13 16:07:27,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2641 conditions, 458 events. 228/458 cut-off events. For 4710/4712 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2030 event pairs, 15 based on Foata normal form. 16/472 useless extension candidates. Maximal degree in co-relation 2200. Up to 147 conditions per place. [2024-11-13 16:07:27,246 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 64 selfloop transitions, 21 changer transitions 3/101 dead transitions. [2024-11-13 16:07:27,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 101 transitions, 1433 flow [2024-11-13 16:07:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:07:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 16:07:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-11-13 16:07:27,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-13 16:07:27,248 INFO L175 Difference]: Start difference. First operand has 108 places, 87 transitions, 1205 flow. Second operand 6 states and 72 transitions. [2024-11-13 16:07:27,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 101 transitions, 1433 flow [2024-11-13 16:07:27,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 101 transitions, 1332 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-13 16:07:27,270 INFO L231 Difference]: Finished difference. Result has 105 places, 78 transitions, 1004 flow [2024-11-13 16:07:27,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1004, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2024-11-13 16:07:27,271 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 81 predicate places. [2024-11-13 16:07:27,271 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 1004 flow [2024-11-13 16:07:27,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:27,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:27,272 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:27,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-13 16:07:27,272 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:27,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:27,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1505967743, now seen corresponding path program 1 times [2024-11-13 16:07:27,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:27,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522453638] [2024-11-13 16:07:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:27,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:27,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522453638] [2024-11-13 16:07:27,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522453638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940292984] [2024-11-13 16:07:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:27,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:27,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:27,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:27,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:07:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:27,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:27,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:27,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:28,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940292984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:28,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:28,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-13 16:07:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143017905] [2024-11-13 16:07:28,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:28,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:07:28,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:07:28,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:07:28,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:28,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 1004 flow. Second operand has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:28,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:28,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:28,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:30,672 INFO L124 PetriNetUnfolderBase]: 677/1270 cut-off events. [2024-11-13 16:07:30,672 INFO L125 PetriNetUnfolderBase]: For 9683/9683 co-relation queries the response was YES. [2024-11-13 16:07:30,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6213 conditions, 1270 events. 677/1270 cut-off events. For 9683/9683 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6778 event pairs, 35 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 5679. Up to 236 conditions per place. [2024-11-13 16:07:30,684 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 128 selfloop transitions, 85 changer transitions 64/278 dead transitions. [2024-11-13 16:07:30,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 278 transitions, 3259 flow [2024-11-13 16:07:30,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 16:07:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-13 16:07:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 310 transitions. [2024-11-13 16:07:30,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-11-13 16:07:30,687 INFO L175 Difference]: Start difference. First operand has 105 places, 78 transitions, 1004 flow. Second operand 36 states and 310 transitions. [2024-11-13 16:07:30,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 278 transitions, 3259 flow [2024-11-13 16:07:30,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 278 transitions, 3126 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-11-13 16:07:30,718 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1933 flow [2024-11-13 16:07:30,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1933, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2024-11-13 16:07:30,719 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 126 predicate places. [2024-11-13 16:07:30,719 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1933 flow [2024-11-13 16:07:30,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:30,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:30,720 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:30,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:07:30,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:30,920 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:30,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1665393229, now seen corresponding path program 2 times [2024-11-13 16:07:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:30,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639140079] [2024-11-13 16:07:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:31,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639140079] [2024-11-13 16:07:31,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639140079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136322569] [2024-11-13 16:07:31,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:07:31,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:31,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:31,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:31,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:07:31,221 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:07:31,222 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:31,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:31,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:31,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:31,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136322569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:31,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:31,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-13 16:07:31,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640569513] [2024-11-13 16:07:31,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:31,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:07:31,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:07:31,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:07:31,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:31,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 1933 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:31,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:31,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:31,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:32,816 INFO L124 PetriNetUnfolderBase]: 749/1478 cut-off events. [2024-11-13 16:07:32,816 INFO L125 PetriNetUnfolderBase]: For 12756/12756 co-relation queries the response was YES. [2024-11-13 16:07:32,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 1478 events. 749/1478 cut-off events. For 12756/12756 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8673 event pairs, 98 based on Foata normal form. 3/1481 useless extension candidates. Maximal degree in co-relation 7571. Up to 612 conditions per place. [2024-11-13 16:07:32,832 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 101 selfloop transitions, 97 changer transitions 16/215 dead transitions. [2024-11-13 16:07:32,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 215 transitions, 3317 flow [2024-11-13 16:07:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:07:32,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 16:07:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 128 transitions. [2024-11-13 16:07:32,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-11-13 16:07:32,835 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1933 flow. Second operand 14 states and 128 transitions. [2024-11-13 16:07:32,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 215 transitions, 3317 flow [2024-11-13 16:07:32,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 215 transitions, 2795 flow, removed 182 selfloop flow, removed 16 redundant places. [2024-11-13 16:07:32,904 INFO L231 Difference]: Finished difference. Result has 141 places, 158 transitions, 2239 flow [2024-11-13 16:07:32,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2239, PETRI_PLACES=141, PETRI_TRANSITIONS=158} [2024-11-13 16:07:32,905 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 117 predicate places. [2024-11-13 16:07:32,906 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 158 transitions, 2239 flow [2024-11-13 16:07:32,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:32,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:32,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:32,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:07:33,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 16:07:33,109 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:33,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1416591727, now seen corresponding path program 3 times [2024-11-13 16:07:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:33,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762754767] [2024-11-13 16:07:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:33,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:33,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:33,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762754767] [2024-11-13 16:07:33,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762754767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:33,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971209506] [2024-11-13 16:07:33,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:07:33,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:33,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:33,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:33,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:07:33,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 16:07:33,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:33,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:33,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:33,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:33,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971209506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:33,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:33,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-13 16:07:33,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986303375] [2024-11-13 16:07:33,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:33,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:07:33,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:07:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:07:33,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:33,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 158 transitions, 2239 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:33,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:33,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:33,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:35,162 INFO L124 PetriNetUnfolderBase]: 893/1746 cut-off events. [2024-11-13 16:07:35,162 INFO L125 PetriNetUnfolderBase]: For 14150/14150 co-relation queries the response was YES. [2024-11-13 16:07:35,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8734 conditions, 1746 events. 893/1746 cut-off events. For 14150/14150 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10496 event pairs, 79 based on Foata normal form. 6/1752 useless extension candidates. Maximal degree in co-relation 8610. Up to 438 conditions per place. [2024-11-13 16:07:35,180 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 88 selfloop transitions, 142 changer transitions 27/258 dead transitions. [2024-11-13 16:07:35,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 258 transitions, 3838 flow [2024-11-13 16:07:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 16:07:35,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-13 16:07:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2024-11-13 16:07:35,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-11-13 16:07:35,181 INFO L175 Difference]: Start difference. First operand has 141 places, 158 transitions, 2239 flow. Second operand 18 states and 154 transitions. [2024-11-13 16:07:35,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 258 transitions, 3838 flow [2024-11-13 16:07:35,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 258 transitions, 3731 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-11-13 16:07:35,247 INFO L231 Difference]: Finished difference. Result has 157 places, 193 transitions, 3153 flow [2024-11-13 16:07:35,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3153, PETRI_PLACES=157, PETRI_TRANSITIONS=193} [2024-11-13 16:07:35,248 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 133 predicate places. [2024-11-13 16:07:35,248 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 193 transitions, 3153 flow [2024-11-13 16:07:35,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:35,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:35,249 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:35,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:07:35,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 16:07:35,449 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:35,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash -506514245, now seen corresponding path program 4 times [2024-11-13 16:07:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:35,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651784231] [2024-11-13 16:07:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:35,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:35,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:35,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651784231] [2024-11-13 16:07:35,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651784231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:35,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10231856] [2024-11-13 16:07:35,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:07:35,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:35,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:35,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:35,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:07:35,739 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:07:35,739 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:35,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:35,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:35,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10231856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:36,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:36,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-13 16:07:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332586803] [2024-11-13 16:07:36,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:36,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:07:36,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:36,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:07:36,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:07:36,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:36,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 193 transitions, 3153 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:36,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:36,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:36,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:37,348 INFO L124 PetriNetUnfolderBase]: 830/1635 cut-off events. [2024-11-13 16:07:37,348 INFO L125 PetriNetUnfolderBase]: For 16464/16464 co-relation queries the response was YES. [2024-11-13 16:07:37,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9142 conditions, 1635 events. 830/1635 cut-off events. For 16464/16464 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9771 event pairs, 89 based on Foata normal form. 4/1639 useless extension candidates. Maximal degree in co-relation 9014. Up to 513 conditions per place. [2024-11-13 16:07:37,366 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 82 selfloop transitions, 137 changer transitions 16/236 dead transitions. [2024-11-13 16:07:37,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 236 transitions, 3930 flow [2024-11-13 16:07:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:07:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 16:07:37,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 143 transitions. [2024-11-13 16:07:37,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-11-13 16:07:37,369 INFO L175 Difference]: Start difference. First operand has 157 places, 193 transitions, 3153 flow. Second operand 17 states and 143 transitions. [2024-11-13 16:07:37,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 236 transitions, 3930 flow [2024-11-13 16:07:37,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 236 transitions, 3717 flow, removed 77 selfloop flow, removed 5 redundant places. [2024-11-13 16:07:37,522 INFO L231 Difference]: Finished difference. Result has 168 places, 188 transitions, 3129 flow [2024-11-13 16:07:37,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3129, PETRI_PLACES=168, PETRI_TRANSITIONS=188} [2024-11-13 16:07:37,523 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 144 predicate places. [2024-11-13 16:07:37,523 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 188 transitions, 3129 flow [2024-11-13 16:07:37,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:37,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:37,523 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:37,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:07:37,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 16:07:37,728 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:37,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1756276903, now seen corresponding path program 5 times [2024-11-13 16:07:37,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356060935] [2024-11-13 16:07:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:37,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:37,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356060935] [2024-11-13 16:07:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356060935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801345331] [2024-11-13 16:07:37,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:07:37,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:37,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:37,922 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:37,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:07:37,993 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:07:37,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:37,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 16:07:37,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:38,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:38,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801345331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:38,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:38,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-11-13 16:07:38,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630056] [2024-11-13 16:07:38,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:38,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:07:38,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:38,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:07:38,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:07:38,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:38,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 188 transitions, 3129 flow. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:38,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:38,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:38,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:39,037 INFO L124 PetriNetUnfolderBase]: 772/1497 cut-off events. [2024-11-13 16:07:39,038 INFO L125 PetriNetUnfolderBase]: For 15847/15847 co-relation queries the response was YES. [2024-11-13 16:07:39,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8761 conditions, 1497 events. 772/1497 cut-off events. For 15847/15847 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8496 event pairs, 163 based on Foata normal form. 2/1499 useless extension candidates. Maximal degree in co-relation 8640. Up to 1015 conditions per place. [2024-11-13 16:07:39,049 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 112 selfloop transitions, 65 changer transitions 49/227 dead transitions. [2024-11-13 16:07:39,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 227 transitions, 3938 flow [2024-11-13 16:07:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:07:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 16:07:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 118 transitions. [2024-11-13 16:07:39,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-11-13 16:07:39,051 INFO L175 Difference]: Start difference. First operand has 168 places, 188 transitions, 3129 flow. Second operand 14 states and 118 transitions. [2024-11-13 16:07:39,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 227 transitions, 3938 flow [2024-11-13 16:07:39,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 227 transitions, 3709 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-11-13 16:07:39,153 INFO L231 Difference]: Finished difference. Result has 167 places, 161 transitions, 2541 flow [2024-11-13 16:07:39,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2913, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2541, PETRI_PLACES=167, PETRI_TRANSITIONS=161} [2024-11-13 16:07:39,154 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 143 predicate places. [2024-11-13 16:07:39,154 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 161 transitions, 2541 flow [2024-11-13 16:07:39,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:39,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:39,155 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:39,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:07:39,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 16:07:39,359 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:39,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1744338781, now seen corresponding path program 6 times [2024-11-13 16:07:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:39,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99281099] [2024-11-13 16:07:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:39,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99281099] [2024-11-13 16:07:39,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99281099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:39,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515770664] [2024-11-13 16:07:39,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:07:39,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:39,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:39,573 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:39,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:07:39,630 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-13 16:07:39,630 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:39,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:39,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:39,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:40,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515770664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:40,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:40,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-13 16:07:40,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752871103] [2024-11-13 16:07:40,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:40,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:07:40,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:07:40,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:07:40,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:40,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 161 transitions, 2541 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:40,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:40,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:40,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:41,169 INFO L124 PetriNetUnfolderBase]: 725/1436 cut-off events. [2024-11-13 16:07:41,169 INFO L125 PetriNetUnfolderBase]: For 13815/13815 co-relation queries the response was YES. [2024-11-13 16:07:41,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 1436 events. 725/1436 cut-off events. For 13815/13815 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8306 event pairs, 111 based on Foata normal form. 2/1438 useless extension candidates. Maximal degree in co-relation 7572. Up to 637 conditions per place. [2024-11-13 16:07:41,180 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 104 selfloop transitions, 91 changer transitions 20/216 dead transitions. [2024-11-13 16:07:41,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 216 transitions, 3449 flow [2024-11-13 16:07:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:07:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 16:07:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 124 transitions. [2024-11-13 16:07:41,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-11-13 16:07:41,182 INFO L175 Difference]: Start difference. First operand has 167 places, 161 transitions, 2541 flow. Second operand 14 states and 124 transitions. [2024-11-13 16:07:41,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 216 transitions, 3449 flow [2024-11-13 16:07:41,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 216 transitions, 3073 flow, removed 25 selfloop flow, removed 19 redundant places. [2024-11-13 16:07:41,261 INFO L231 Difference]: Finished difference. Result has 150 places, 156 transitions, 2338 flow [2024-11-13 16:07:41,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2338, PETRI_PLACES=150, PETRI_TRANSITIONS=156} [2024-11-13 16:07:41,262 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 126 predicate places. [2024-11-13 16:07:41,262 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 156 transitions, 2338 flow [2024-11-13 16:07:41,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:41,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:41,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:41,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 16:07:41,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 16:07:41,468 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:41,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:41,469 INFO L85 PathProgramCache]: Analyzing trace with hash 915376831, now seen corresponding path program 7 times [2024-11-13 16:07:41,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:41,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056214128] [2024-11-13 16:07:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056214128] [2024-11-13 16:07:41,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056214128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760067395] [2024-11-13 16:07:41,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:07:41,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:41,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:41,666 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:41,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:07:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:41,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:41,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:41,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760067395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:42,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:42,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-13 16:07:42,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760362927] [2024-11-13 16:07:42,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:42,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:07:42,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:42,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:07:42,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:07:42,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:42,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 156 transitions, 2338 flow. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:42,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:42,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:42,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:43,710 INFO L124 PetriNetUnfolderBase]: 946/1856 cut-off events. [2024-11-13 16:07:43,710 INFO L125 PetriNetUnfolderBase]: For 18005/18005 co-relation queries the response was YES. [2024-11-13 16:07:43,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9991 conditions, 1856 events. 946/1856 cut-off events. For 18005/18005 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11272 event pairs, 55 based on Foata normal form. 30/1886 useless extension candidates. Maximal degree in co-relation 9848. Up to 466 conditions per place. [2024-11-13 16:07:43,720 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 93 selfloop transitions, 179 changer transitions 38/311 dead transitions. [2024-11-13 16:07:43,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 311 transitions, 5003 flow [2024-11-13 16:07:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 16:07:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-13 16:07:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 210 transitions. [2024-11-13 16:07:43,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-11-13 16:07:43,722 INFO L175 Difference]: Start difference. First operand has 150 places, 156 transitions, 2338 flow. Second operand 27 states and 210 transitions. [2024-11-13 16:07:43,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 311 transitions, 5003 flow [2024-11-13 16:07:43,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 311 transitions, 4861 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-11-13 16:07:43,786 INFO L231 Difference]: Finished difference. Result has 178 places, 237 transitions, 4360 flow [2024-11-13 16:07:43,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2253, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4360, PETRI_PLACES=178, PETRI_TRANSITIONS=237} [2024-11-13 16:07:43,787 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 154 predicate places. [2024-11-13 16:07:43,787 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 237 transitions, 4360 flow [2024-11-13 16:07:43,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:43,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:43,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:43,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:07:43,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 16:07:43,993 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:43,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:43,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1423063367, now seen corresponding path program 8 times [2024-11-13 16:07:43,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:43,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353842617] [2024-11-13 16:07:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:43,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:44,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:44,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353842617] [2024-11-13 16:07:44,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353842617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:44,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018041127] [2024-11-13 16:07:44,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:07:44,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:44,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:44,177 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:44,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:07:44,250 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:07:44,250 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:44,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:44,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:44,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:44,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018041127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:44,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:44,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-13 16:07:44,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572873440] [2024-11-13 16:07:44,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:44,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:07:44,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:44,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:07:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:07:44,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:44,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 237 transitions, 4360 flow. Second operand has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:44,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:44,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:44,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:45,711 INFO L124 PetriNetUnfolderBase]: 1042/2022 cut-off events. [2024-11-13 16:07:45,711 INFO L125 PetriNetUnfolderBase]: For 26413/26413 co-relation queries the response was YES. [2024-11-13 16:07:45,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12978 conditions, 2022 events. 1042/2022 cut-off events. For 26413/26413 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12461 event pairs, 164 based on Foata normal form. 2/2024 useless extension candidates. Maximal degree in co-relation 12792. Up to 1103 conditions per place. [2024-11-13 16:07:45,724 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 153 selfloop transitions, 173 changer transitions 16/343 dead transitions. [2024-11-13 16:07:45,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 343 transitions, 6838 flow [2024-11-13 16:07:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:07:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 16:07:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 112 transitions. [2024-11-13 16:07:45,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-11-13 16:07:45,725 INFO L175 Difference]: Start difference. First operand has 178 places, 237 transitions, 4360 flow. Second operand 13 states and 112 transitions. [2024-11-13 16:07:45,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 343 transitions, 6838 flow [2024-11-13 16:07:45,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 343 transitions, 6138 flow, removed 291 selfloop flow, removed 7 redundant places. [2024-11-13 16:07:45,874 INFO L231 Difference]: Finished difference. Result has 184 places, 281 transitions, 5222 flow [2024-11-13 16:07:45,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3911, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5222, PETRI_PLACES=184, PETRI_TRANSITIONS=281} [2024-11-13 16:07:45,874 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 160 predicate places. [2024-11-13 16:07:45,874 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 281 transitions, 5222 flow [2024-11-13 16:07:45,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:45,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:45,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:45,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 16:07:46,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:46,076 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:46,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:46,076 INFO L85 PathProgramCache]: Analyzing trace with hash 796471999, now seen corresponding path program 9 times [2024-11-13 16:07:46,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:46,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284206183] [2024-11-13 16:07:46,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:46,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:46,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284206183] [2024-11-13 16:07:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284206183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484463768] [2024-11-13 16:07:46,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:07:46,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:46,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:46,258 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:46,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:07:46,324 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 16:07:46,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:46,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:46,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:46,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484463768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:46,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:46,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-11-13 16:07:46,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550849363] [2024-11-13 16:07:46,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:46,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 16:07:46,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:46,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 16:07:46,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2024-11-13 16:07:46,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:46,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 281 transitions, 5222 flow. Second operand has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:46,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:46,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:46,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:48,801 INFO L124 PetriNetUnfolderBase]: 1310/2596 cut-off events. [2024-11-13 16:07:48,802 INFO L125 PetriNetUnfolderBase]: For 34347/34347 co-relation queries the response was YES. [2024-11-13 16:07:48,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15728 conditions, 2596 events. 1310/2596 cut-off events. For 34347/34347 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17357 event pairs, 219 based on Foata normal form. 36/2632 useless extension candidates. Maximal degree in co-relation 15535. Up to 1163 conditions per place. [2024-11-13 16:07:48,823 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 208 selfloop transitions, 208 changer transitions 28/445 dead transitions. [2024-11-13 16:07:48,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 445 transitions, 8040 flow [2024-11-13 16:07:48,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 16:07:48,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-13 16:07:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 300 transitions. [2024-11-13 16:07:48,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36855036855036855 [2024-11-13 16:07:48,825 INFO L175 Difference]: Start difference. First operand has 184 places, 281 transitions, 5222 flow. Second operand 37 states and 300 transitions. [2024-11-13 16:07:48,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 445 transitions, 8040 flow [2024-11-13 16:07:49,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 445 transitions, 7849 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-13 16:07:49,008 INFO L231 Difference]: Finished difference. Result has 226 places, 330 transitions, 6540 flow [2024-11-13 16:07:49,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4850, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6540, PETRI_PLACES=226, PETRI_TRANSITIONS=330} [2024-11-13 16:07:49,009 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 202 predicate places. [2024-11-13 16:07:49,009 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 330 transitions, 6540 flow [2024-11-13 16:07:49,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:49,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:49,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:49,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:07:49,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:49,210 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:49,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:49,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1459825985, now seen corresponding path program 10 times [2024-11-13 16:07:49,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:49,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979972838] [2024-11-13 16:07:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:49,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:49,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:49,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979972838] [2024-11-13 16:07:49,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979972838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432188859] [2024-11-13 16:07:49,379 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:07:49,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:49,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:49,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:49,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:07:49,448 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:07:49,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:49,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:49,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:49,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:49,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432188859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:49,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:49,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-13 16:07:49,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433306097] [2024-11-13 16:07:49,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:49,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 16:07:49,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:49,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 16:07:49,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:07:49,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:49,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 330 transitions, 6540 flow. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:49,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:49,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:49,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:51,291 INFO L124 PetriNetUnfolderBase]: 1283/2541 cut-off events. [2024-11-13 16:07:51,291 INFO L125 PetriNetUnfolderBase]: For 35895/35895 co-relation queries the response was YES. [2024-11-13 16:07:51,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16447 conditions, 2541 events. 1283/2541 cut-off events. For 35895/35895 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16832 event pairs, 79 based on Foata normal form. 39/2580 useless extension candidates. Maximal degree in co-relation 16263. Up to 580 conditions per place. [2024-11-13 16:07:51,312 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 106 selfloop transitions, 232 changer transitions 52/391 dead transitions. [2024-11-13 16:07:51,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 391 transitions, 7831 flow [2024-11-13 16:07:51,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 16:07:51,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 16:07:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 192 transitions. [2024-11-13 16:07:51,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3490909090909091 [2024-11-13 16:07:51,314 INFO L175 Difference]: Start difference. First operand has 226 places, 330 transitions, 6540 flow. Second operand 25 states and 192 transitions. [2024-11-13 16:07:51,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 391 transitions, 7831 flow [2024-11-13 16:07:51,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 391 transitions, 7432 flow, removed 95 selfloop flow, removed 16 redundant places. [2024-11-13 16:07:51,613 INFO L231 Difference]: Finished difference. Result has 235 places, 303 transitions, 6133 flow [2024-11-13 16:07:51,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6058, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6133, PETRI_PLACES=235, PETRI_TRANSITIONS=303} [2024-11-13 16:07:51,614 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 211 predicate places. [2024-11-13 16:07:51,614 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 303 transitions, 6133 flow [2024-11-13 16:07:51,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:51,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:51,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:51,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:07:51,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 16:07:51,815 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:51,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1831668131, now seen corresponding path program 11 times [2024-11-13 16:07:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:51,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826375436] [2024-11-13 16:07:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:51,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826375436] [2024-11-13 16:07:51,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826375436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293532191] [2024-11-13 16:07:51,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:07:51,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:51,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:51,997 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:52,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:07:52,063 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 16:07:52,064 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:52,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 16:07:52,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:52,218 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:07:52,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293532191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:07:52,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:07:52,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-13 16:07:52,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322176642] [2024-11-13 16:07:52,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:07:52,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:07:52,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:52,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:07:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:07:52,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:52,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 303 transitions, 6133 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:52,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:52,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:52,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:52,865 INFO L124 PetriNetUnfolderBase]: 1215/2401 cut-off events. [2024-11-13 16:07:52,865 INFO L125 PetriNetUnfolderBase]: For 36638/36638 co-relation queries the response was YES. [2024-11-13 16:07:52,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16005 conditions, 2401 events. 1215/2401 cut-off events. For 36638/36638 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 15692 event pairs, 235 based on Foata normal form. 3/2404 useless extension candidates. Maximal degree in co-relation 15825. Up to 1468 conditions per place. [2024-11-13 16:07:52,894 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 180 selfloop transitions, 162 changer transitions 29/372 dead transitions. [2024-11-13 16:07:52,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 372 transitions, 8136 flow [2024-11-13 16:07:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:07:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:07:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-11-13 16:07:52,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-11-13 16:07:52,897 INFO L175 Difference]: Start difference. First operand has 235 places, 303 transitions, 6133 flow. Second operand 9 states and 82 transitions. [2024-11-13 16:07:52,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 372 transitions, 8136 flow [2024-11-13 16:07:53,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 372 transitions, 7649 flow, removed 42 selfloop flow, removed 23 redundant places. [2024-11-13 16:07:53,130 INFO L231 Difference]: Finished difference. Result has 216 places, 328 transitions, 6835 flow [2024-11-13 16:07:53,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6835, PETRI_PLACES=216, PETRI_TRANSITIONS=328} [2024-11-13 16:07:53,130 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 192 predicate places. [2024-11-13 16:07:53,131 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 328 transitions, 6835 flow [2024-11-13 16:07:53,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:53,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:53,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:53,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 16:07:53,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:53,332 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:53,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:53,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1840092527, now seen corresponding path program 12 times [2024-11-13 16:07:53,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:53,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178600820] [2024-11-13 16:07:53,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:53,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:53,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178600820] [2024-11-13 16:07:53,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178600820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699409461] [2024-11-13 16:07:53,493 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:07:53,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:53,499 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:53,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:07:53,572 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-13 16:07:53,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:53,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:53,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:53,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:54,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699409461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:54,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:54,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-13 16:07:54,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386503729] [2024-11-13 16:07:54,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:54,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 16:07:54,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:54,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 16:07:54,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:07:54,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:54,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 328 transitions, 6835 flow. Second operand has 21 states, 21 states have (on average 4.619047619047619) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:54,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:54,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:54,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:55,547 INFO L124 PetriNetUnfolderBase]: 1476/2975 cut-off events. [2024-11-13 16:07:55,548 INFO L125 PetriNetUnfolderBase]: For 43138/43138 co-relation queries the response was YES. [2024-11-13 16:07:55,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19139 conditions, 2975 events. 1476/2975 cut-off events. For 43138/43138 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 20858 event pairs, 91 based on Foata normal form. 8/2983 useless extension candidates. Maximal degree in co-relation 18916. Up to 710 conditions per place. [2024-11-13 16:07:55,565 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 109 selfloop transitions, 245 changer transitions 115/470 dead transitions. [2024-11-13 16:07:55,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 470 transitions, 9858 flow [2024-11-13 16:07:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 16:07:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-13 16:07:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 218 transitions. [2024-11-13 16:07:55,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-11-13 16:07:55,566 INFO L175 Difference]: Start difference. First operand has 216 places, 328 transitions, 6835 flow. Second operand 27 states and 218 transitions. [2024-11-13 16:07:55,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 470 transitions, 9858 flow [2024-11-13 16:07:55,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 470 transitions, 9518 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-13 16:07:55,832 INFO L231 Difference]: Finished difference. Result has 242 places, 313 transitions, 6641 flow [2024-11-13 16:07:55,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6554, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6641, PETRI_PLACES=242, PETRI_TRANSITIONS=313} [2024-11-13 16:07:55,833 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 218 predicate places. [2024-11-13 16:07:55,833 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 313 transitions, 6641 flow [2024-11-13 16:07:55,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.619047619047619) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:55,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:55,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:55,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 16:07:56,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-13 16:07:56,038 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:56,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:56,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1474860965, now seen corresponding path program 13 times [2024-11-13 16:07:56,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:56,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330599019] [2024-11-13 16:07:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:56,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330599019] [2024-11-13 16:07:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330599019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:56,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244787831] [2024-11-13 16:07:56,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:07:56,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:56,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:56,215 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:56,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:07:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:56,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:56,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:56,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:56,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244787831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:56,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:56,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-13 16:07:56,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121107627] [2024-11-13 16:07:56,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:56,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:07:56,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:56,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:07:56,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:07:56,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:56,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 313 transitions, 6641 flow. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:56,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:56,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:56,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:07:57,770 INFO L124 PetriNetUnfolderBase]: 1138/2341 cut-off events. [2024-11-13 16:07:57,771 INFO L125 PetriNetUnfolderBase]: For 32272/32272 co-relation queries the response was YES. [2024-11-13 16:07:57,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15274 conditions, 2341 events. 1138/2341 cut-off events. For 32272/32272 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15832 event pairs, 250 based on Foata normal form. 2/2343 useless extension candidates. Maximal degree in co-relation 15054. Up to 1425 conditions per place. [2024-11-13 16:07:57,788 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 150 selfloop transitions, 128 changer transitions 67/346 dead transitions. [2024-11-13 16:07:57,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 346 transitions, 7639 flow [2024-11-13 16:07:57,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:07:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 16:07:57,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 101 transitions. [2024-11-13 16:07:57,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3531468531468531 [2024-11-13 16:07:57,789 INFO L175 Difference]: Start difference. First operand has 242 places, 313 transitions, 6641 flow. Second operand 13 states and 101 transitions. [2024-11-13 16:07:57,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 346 transitions, 7639 flow [2024-11-13 16:07:58,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 346 transitions, 7067 flow, removed 95 selfloop flow, removed 12 redundant places. [2024-11-13 16:07:58,007 INFO L231 Difference]: Finished difference. Result has 234 places, 270 transitions, 5424 flow [2024-11-13 16:07:58,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6097, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5424, PETRI_PLACES=234, PETRI_TRANSITIONS=270} [2024-11-13 16:07:58,008 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 210 predicate places. [2024-11-13 16:07:58,008 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 270 transitions, 5424 flow [2024-11-13 16:07:58,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:58,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:07:58,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:58,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 16:07:58,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:58,209 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:07:58,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash 243380445, now seen corresponding path program 14 times [2024-11-13 16:07:58,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:58,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202243825] [2024-11-13 16:07:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:58,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:58,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202243825] [2024-11-13 16:07:58,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202243825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252533939] [2024-11-13 16:07:58,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:07:58,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:58,375 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:58,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:07:58,438 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:07:58,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:58,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:07:58,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:58,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:58,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252533939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:58,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:58,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-13 16:07:58,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502599239] [2024-11-13 16:07:58,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:58,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 16:07:58,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:58,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 16:07:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:07:58,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:07:58,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 270 transitions, 5424 flow. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:58,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:07:58,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:07:58,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:00,233 INFO L124 PetriNetUnfolderBase]: 1328/2741 cut-off events. [2024-11-13 16:08:00,233 INFO L125 PetriNetUnfolderBase]: For 35211/35211 co-relation queries the response was YES. [2024-11-13 16:08:00,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17302 conditions, 2741 events. 1328/2741 cut-off events. For 35211/35211 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 19397 event pairs, 152 based on Foata normal form. 6/2747 useless extension candidates. Maximal degree in co-relation 17060. Up to 1273 conditions per place. [2024-11-13 16:08:00,251 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 146 selfloop transitions, 264 changer transitions 51/462 dead transitions. [2024-11-13 16:08:00,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 462 transitions, 9883 flow [2024-11-13 16:08:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 16:08:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 16:08:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 214 transitions. [2024-11-13 16:08:00,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3890909090909091 [2024-11-13 16:08:00,253 INFO L175 Difference]: Start difference. First operand has 234 places, 270 transitions, 5424 flow. Second operand 25 states and 214 transitions. [2024-11-13 16:08:00,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 462 transitions, 9883 flow [2024-11-13 16:08:00,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 462 transitions, 9186 flow, removed 32 selfloop flow, removed 15 redundant places. [2024-11-13 16:08:00,454 INFO L231 Difference]: Finished difference. Result has 242 places, 368 transitions, 8012 flow [2024-11-13 16:08:00,455 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4990, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8012, PETRI_PLACES=242, PETRI_TRANSITIONS=368} [2024-11-13 16:08:00,455 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 218 predicate places. [2024-11-13 16:08:00,455 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 368 transitions, 8012 flow [2024-11-13 16:08:00,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:00,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:00,456 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:00,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 16:08:00,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:00,656 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:00,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1531751313, now seen corresponding path program 15 times [2024-11-13 16:08:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479670470] [2024-11-13 16:08:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:00,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:00,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479670470] [2024-11-13 16:08:00,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479670470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:00,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788611622] [2024-11-13 16:08:00,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:08:00,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:00,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:00,820 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:00,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 16:08:00,885 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 16:08:00,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:00,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:08:00,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:01,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:01,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788611622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:01,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:01,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-13 16:08:01,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996981392] [2024-11-13 16:08:01,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:01,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:08:01,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:01,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:08:01,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:08:01,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:01,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 368 transitions, 8012 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:01,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:01,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:01,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:03,648 INFO L124 PetriNetUnfolderBase]: 2058/4261 cut-off events. [2024-11-13 16:08:03,648 INFO L125 PetriNetUnfolderBase]: For 53688/53688 co-relation queries the response was YES. [2024-11-13 16:08:03,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27508 conditions, 4261 events. 2058/4261 cut-off events. For 53688/53688 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 33011 event pairs, 101 based on Foata normal form. 23/4284 useless extension candidates. Maximal degree in co-relation 27196. Up to 897 conditions per place. [2024-11-13 16:08:03,679 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 251 selfloop transitions, 312 changer transitions 125/689 dead transitions. [2024-11-13 16:08:03,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 689 transitions, 15467 flow [2024-11-13 16:08:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 16:08:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-13 16:08:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 234 transitions. [2024-11-13 16:08:03,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-11-13 16:08:03,680 INFO L175 Difference]: Start difference. First operand has 242 places, 368 transitions, 8012 flow. Second operand 30 states and 234 transitions. [2024-11-13 16:08:03,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 689 transitions, 15467 flow [2024-11-13 16:08:04,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 689 transitions, 15022 flow, removed 190 selfloop flow, removed 5 redundant places. [2024-11-13 16:08:04,174 INFO L231 Difference]: Finished difference. Result has 271 places, 466 transitions, 11160 flow [2024-11-13 16:08:04,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7772, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11160, PETRI_PLACES=271, PETRI_TRANSITIONS=466} [2024-11-13 16:08:04,175 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 247 predicate places. [2024-11-13 16:08:04,175 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 466 transitions, 11160 flow [2024-11-13 16:08:04,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:04,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:04,176 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:04,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 16:08:04,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:04,376 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:04,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:04,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2082978957, now seen corresponding path program 16 times [2024-11-13 16:08:04,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:04,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022007593] [2024-11-13 16:08:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:04,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:04,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:04,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022007593] [2024-11-13 16:08:04,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022007593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:04,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344101831] [2024-11-13 16:08:04,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:08:04,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:04,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:04,555 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:04,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 16:08:04,610 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:08:04,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:04,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:08:04,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:04,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:05,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344101831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:05,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:05,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-13 16:08:05,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909182437] [2024-11-13 16:08:05,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:05,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:08:05,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:05,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:08:05,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:08:05,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:05,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 466 transitions, 11160 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:05,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:05,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:05,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:06,359 INFO L124 PetriNetUnfolderBase]: 1487/3179 cut-off events. [2024-11-13 16:08:06,360 INFO L125 PetriNetUnfolderBase]: For 44362/44362 co-relation queries the response was YES. [2024-11-13 16:08:06,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22075 conditions, 3179 events. 1487/3179 cut-off events. For 44362/44362 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 24065 event pairs, 77 based on Foata normal form. 10/3189 useless extension candidates. Maximal degree in co-relation 21997. Up to 1033 conditions per place. [2024-11-13 16:08:06,388 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 166 selfloop transitions, 301 changer transitions 41/509 dead transitions. [2024-11-13 16:08:06,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 509 transitions, 12690 flow [2024-11-13 16:08:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:08:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 16:08:06,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 119 transitions. [2024-11-13 16:08:06,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-11-13 16:08:06,389 INFO L175 Difference]: Start difference. First operand has 271 places, 466 transitions, 11160 flow. Second operand 15 states and 119 transitions. [2024-11-13 16:08:06,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 509 transitions, 12690 flow [2024-11-13 16:08:06,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 509 transitions, 11441 flow, removed 64 selfloop flow, removed 20 redundant places. [2024-11-13 16:08:06,713 INFO L231 Difference]: Finished difference. Result has 248 places, 444 transitions, 10258 flow [2024-11-13 16:08:06,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=9956, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10258, PETRI_PLACES=248, PETRI_TRANSITIONS=444} [2024-11-13 16:08:06,714 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 224 predicate places. [2024-11-13 16:08:06,714 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 444 transitions, 10258 flow [2024-11-13 16:08:06,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:06,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:06,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:06,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 16:08:06,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-13 16:08:06,914 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:06,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1720025715, now seen corresponding path program 17 times [2024-11-13 16:08:06,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:06,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759785887] [2024-11-13 16:08:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:06,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:07,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759785887] [2024-11-13 16:08:07,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759785887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469096448] [2024-11-13 16:08:07,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:08:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:07,075 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:07,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 16:08:07,132 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:08:07,133 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:07,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 16:08:07,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:07,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:07,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469096448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:07,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:07,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-11-13 16:08:07,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037811974] [2024-11-13 16:08:07,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:07,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:08:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:07,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:08:07,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:08:07,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:07,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 444 transitions, 10258 flow. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:07,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:07,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:07,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:08,135 INFO L124 PetriNetUnfolderBase]: 1335/2804 cut-off events. [2024-11-13 16:08:08,135 INFO L125 PetriNetUnfolderBase]: For 35938/35938 co-relation queries the response was YES. [2024-11-13 16:08:08,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19406 conditions, 2804 events. 1335/2804 cut-off events. For 35938/35938 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 20470 event pairs, 252 based on Foata normal form. 8/2812 useless extension candidates. Maximal degree in co-relation 19334. Up to 1487 conditions per place. [2024-11-13 16:08:08,164 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 222 selfloop transitions, 188 changer transitions 65/476 dead transitions. [2024-11-13 16:08:08,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 476 transitions, 11486 flow [2024-11-13 16:08:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:08:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 16:08:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 114 transitions. [2024-11-13 16:08:08,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-11-13 16:08:08,165 INFO L175 Difference]: Start difference. First operand has 248 places, 444 transitions, 10258 flow. Second operand 15 states and 114 transitions. [2024-11-13 16:08:08,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 476 transitions, 11486 flow [2024-11-13 16:08:08,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 476 transitions, 11321 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-11-13 16:08:08,480 INFO L231 Difference]: Finished difference. Result has 258 places, 391 transitions, 9105 flow [2024-11-13 16:08:08,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=10093, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9105, PETRI_PLACES=258, PETRI_TRANSITIONS=391} [2024-11-13 16:08:08,481 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 234 predicate places. [2024-11-13 16:08:08,481 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 391 transitions, 9105 flow [2024-11-13 16:08:08,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:08,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:08,481 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:08,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-13 16:08:08,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:08,681 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:08,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1233614331, now seen corresponding path program 18 times [2024-11-13 16:08:08,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:08,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824054717] [2024-11-13 16:08:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:08,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:08,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:08,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824054717] [2024-11-13 16:08:08,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824054717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:08,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636777926] [2024-11-13 16:08:08,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:08:08,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:08,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:08,810 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:08,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 16:08:08,853 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-13 16:08:08,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:08,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:08:08,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:08,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:09,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636777926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:09,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:09,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-13 16:08:09,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134801485] [2024-11-13 16:08:09,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:09,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:08:09,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:09,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:08:09,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:08:09,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:09,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 391 transitions, 9105 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:09,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:09,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:09,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:10,174 INFO L124 PetriNetUnfolderBase]: 1168/2497 cut-off events. [2024-11-13 16:08:10,174 INFO L125 PetriNetUnfolderBase]: For 35030/35030 co-relation queries the response was YES. [2024-11-13 16:08:10,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17075 conditions, 2497 events. 1168/2497 cut-off events. For 35030/35030 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 17996 event pairs, 49 based on Foata normal form. 8/2505 useless extension candidates. Maximal degree in co-relation 17003. Up to 732 conditions per place. [2024-11-13 16:08:10,193 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 147 selfloop transitions, 190 changer transitions 89/427 dead transitions. [2024-11-13 16:08:10,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 427 transitions, 10191 flow [2024-11-13 16:08:10,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 16:08:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 16:08:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 125 transitions. [2024-11-13 16:08:10,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-11-13 16:08:10,194 INFO L175 Difference]: Start difference. First operand has 258 places, 391 transitions, 9105 flow. Second operand 16 states and 125 transitions. [2024-11-13 16:08:10,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 427 transitions, 10191 flow [2024-11-13 16:08:10,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 427 transitions, 9688 flow, removed 40 selfloop flow, removed 17 redundant places. [2024-11-13 16:08:10,438 INFO L231 Difference]: Finished difference. Result has 252 places, 320 transitions, 7358 flow [2024-11-13 16:08:10,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=8614, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7358, PETRI_PLACES=252, PETRI_TRANSITIONS=320} [2024-11-13 16:08:10,438 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 228 predicate places. [2024-11-13 16:08:10,439 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 320 transitions, 7358 flow [2024-11-13 16:08:10,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:10,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:10,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:10,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 16:08:10,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-13 16:08:10,639 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:10,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash 362285277, now seen corresponding path program 19 times [2024-11-13 16:08:10,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:10,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793849847] [2024-11-13 16:08:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:10,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:10,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:10,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793849847] [2024-11-13 16:08:10,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793849847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:10,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126918548] [2024-11-13 16:08:10,780 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:08:10,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:10,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:10,782 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:10,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 16:08:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:10,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:08:10,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:10,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:11,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126918548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:11,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:11,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-13 16:08:11,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064399518] [2024-11-13 16:08:11,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:11,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 16:08:11,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:11,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 16:08:11,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:08:11,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:11,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 320 transitions, 7358 flow. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:11,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:11,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:11,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:12,251 INFO L124 PetriNetUnfolderBase]: 961/2069 cut-off events. [2024-11-13 16:08:12,252 INFO L125 PetriNetUnfolderBase]: For 28883/28883 co-relation queries the response was YES. [2024-11-13 16:08:12,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13637 conditions, 2069 events. 961/2069 cut-off events. For 28883/28883 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14421 event pairs, 39 based on Foata normal form. 9/2078 useless extension candidates. Maximal degree in co-relation 13572. Up to 515 conditions per place. [2024-11-13 16:08:12,263 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 102 selfloop transitions, 210 changer transitions 60/373 dead transitions. [2024-11-13 16:08:12,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 373 transitions, 8337 flow [2024-11-13 16:08:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 16:08:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 16:08:12,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 193 transitions. [2024-11-13 16:08:12,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3374125874125874 [2024-11-13 16:08:12,264 INFO L175 Difference]: Start difference. First operand has 252 places, 320 transitions, 7358 flow. Second operand 26 states and 193 transitions. [2024-11-13 16:08:12,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 373 transitions, 8337 flow [2024-11-13 16:08:12,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 373 transitions, 7472 flow, removed 52 selfloop flow, removed 19 redundant places. [2024-11-13 16:08:12,398 INFO L231 Difference]: Finished difference. Result has 236 places, 274 transitions, 5897 flow [2024-11-13 16:08:12,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6517, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5897, PETRI_PLACES=236, PETRI_TRANSITIONS=274} [2024-11-13 16:08:12,399 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2024-11-13 16:08:12,399 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 274 transitions, 5897 flow [2024-11-13 16:08:12,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:12,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:12,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:12,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 16:08:12,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-13 16:08:12,599 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:12,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:12,600 INFO L85 PathProgramCache]: Analyzing trace with hash 303167, now seen corresponding path program 20 times [2024-11-13 16:08:12,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:12,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064228677] [2024-11-13 16:08:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:12,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:12,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064228677] [2024-11-13 16:08:12,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064228677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258636274] [2024-11-13 16:08:12,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:08:12,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:12,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:12,728 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:12,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 16:08:12,780 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:08:12,781 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:12,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:08:12,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:12,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:13,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258636274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:13,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:13,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-13 16:08:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181046320] [2024-11-13 16:08:13,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:13,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 16:08:13,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:13,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 16:08:13,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:08:13,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:13,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 274 transitions, 5897 flow. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:13,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:13,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:13,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:14,148 INFO L124 PetriNetUnfolderBase]: 928/1996 cut-off events. [2024-11-13 16:08:14,148 INFO L125 PetriNetUnfolderBase]: For 20690/20690 co-relation queries the response was YES. [2024-11-13 16:08:14,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12362 conditions, 1996 events. 928/1996 cut-off events. For 20690/20690 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13754 event pairs, 32 based on Foata normal form. 9/2005 useless extension candidates. Maximal degree in co-relation 12303. Up to 473 conditions per place. [2024-11-13 16:08:14,158 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 86 selfloop transitions, 173 changer transitions 100/360 dead transitions. [2024-11-13 16:08:14,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 360 transitions, 7336 flow [2024-11-13 16:08:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 16:08:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-13 16:08:14,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 215 transitions. [2024-11-13 16:08:14,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-11-13 16:08:14,159 INFO L175 Difference]: Start difference. First operand has 236 places, 274 transitions, 5897 flow. Second operand 30 states and 215 transitions. [2024-11-13 16:08:14,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 360 transitions, 7336 flow [2024-11-13 16:08:14,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 360 transitions, 6908 flow, removed 4 selfloop flow, removed 18 redundant places. [2024-11-13 16:08:14,242 INFO L231 Difference]: Finished difference. Result has 243 places, 229 transitions, 4837 flow [2024-11-13 16:08:14,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5501, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4837, PETRI_PLACES=243, PETRI_TRANSITIONS=229} [2024-11-13 16:08:14,242 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 219 predicate places. [2024-11-13 16:08:14,242 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 229 transitions, 4837 flow [2024-11-13 16:08:14,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:14,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:14,243 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:14,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 16:08:14,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-13 16:08:14,443 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:14,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:14,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1921710429, now seen corresponding path program 21 times [2024-11-13 16:08:14,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:14,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343752301] [2024-11-13 16:08:14,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:14,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:14,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:14,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343752301] [2024-11-13 16:08:14,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343752301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:14,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118446616] [2024-11-13 16:08:14,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:08:14,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:14,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:14,561 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:14,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 16:08:14,605 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 16:08:14,606 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:14,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:08:14,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:14,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:14,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118446616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:14,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:14,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-13 16:08:14,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972872429] [2024-11-13 16:08:14,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:14,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:08:14,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:14,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:08:14,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:08:14,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:14,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 229 transitions, 4837 flow. Second operand has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:14,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:14,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:14,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:15,461 INFO L124 PetriNetUnfolderBase]: 684/1495 cut-off events. [2024-11-13 16:08:15,461 INFO L125 PetriNetUnfolderBase]: For 16992/16992 co-relation queries the response was YES. [2024-11-13 16:08:15,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9380 conditions, 1495 events. 684/1495 cut-off events. For 16992/16992 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9695 event pairs, 139 based on Foata normal form. 4/1499 useless extension candidates. Maximal degree in co-relation 9318. Up to 805 conditions per place. [2024-11-13 16:08:15,468 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 134 selfloop transitions, 81 changer transitions 37/253 dead transitions. [2024-11-13 16:08:15,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 253 transitions, 5446 flow [2024-11-13 16:08:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:08:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 16:08:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 97 transitions. [2024-11-13 16:08:15,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33916083916083917 [2024-11-13 16:08:15,469 INFO L175 Difference]: Start difference. First operand has 243 places, 229 transitions, 4837 flow. Second operand 13 states and 97 transitions. [2024-11-13 16:08:15,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 253 transitions, 5446 flow [2024-11-13 16:08:15,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 253 transitions, 4857 flow, removed 30 selfloop flow, removed 34 redundant places. [2024-11-13 16:08:15,529 INFO L231 Difference]: Finished difference. Result has 206 places, 208 transitions, 3988 flow [2024-11-13 16:08:15,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4250, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3988, PETRI_PLACES=206, PETRI_TRANSITIONS=208} [2024-11-13 16:08:15,529 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 182 predicate places. [2024-11-13 16:08:15,529 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 208 transitions, 3988 flow [2024-11-13 16:08:15,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:15,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:15,530 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:15,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 16:08:15,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:15,731 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:15,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:15,731 INFO L85 PathProgramCache]: Analyzing trace with hash 197803891, now seen corresponding path program 22 times [2024-11-13 16:08:15,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:15,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764007373] [2024-11-13 16:08:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:15,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:15,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:15,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764007373] [2024-11-13 16:08:15,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764007373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:15,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080069168] [2024-11-13 16:08:15,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:08:15,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:15,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:15,850 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:15,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 16:08:15,900 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:08:15,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:15,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:08:15,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:16,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:16,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080069168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:16,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:16,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-13 16:08:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025617136] [2024-11-13 16:08:16,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:16,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:08:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:08:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:08:16,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:16,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 208 transitions, 3988 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:16,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:16,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:16,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:16,685 INFO L124 PetriNetUnfolderBase]: 637/1411 cut-off events. [2024-11-13 16:08:16,685 INFO L125 PetriNetUnfolderBase]: For 13391/13391 co-relation queries the response was YES. [2024-11-13 16:08:16,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8058 conditions, 1411 events. 637/1411 cut-off events. For 13391/13391 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9144 event pairs, 53 based on Foata normal form. 7/1418 useless extension candidates. Maximal degree in co-relation 8007. Up to 404 conditions per place. [2024-11-13 16:08:16,691 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 117 selfloop transitions, 98 changer transitions 29/245 dead transitions. [2024-11-13 16:08:16,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 245 transitions, 4715 flow [2024-11-13 16:08:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:08:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 16:08:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 110 transitions. [2024-11-13 16:08:16,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-13 16:08:16,692 INFO L175 Difference]: Start difference. First operand has 206 places, 208 transitions, 3988 flow. Second operand 14 states and 110 transitions. [2024-11-13 16:08:16,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 245 transitions, 4715 flow [2024-11-13 16:08:16,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 245 transitions, 4486 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-11-13 16:08:16,734 INFO L231 Difference]: Finished difference. Result has 195 places, 193 transitions, 3722 flow [2024-11-13 16:08:16,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3764, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3722, PETRI_PLACES=195, PETRI_TRANSITIONS=193} [2024-11-13 16:08:16,735 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 171 predicate places. [2024-11-13 16:08:16,735 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 193 transitions, 3722 flow [2024-11-13 16:08:16,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:16,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:16,735 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:16,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 16:08:16,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:16,935 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:16,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash 775511590, now seen corresponding path program 23 times [2024-11-13 16:08:16,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:16,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816160808] [2024-11-13 16:08:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:16,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:16,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:16,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816160808] [2024-11-13 16:08:16,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816160808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:16,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102902418] [2024-11-13 16:08:16,980 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:08:16,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:16,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:16,983 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:16,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 16:08:17,036 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:08:17,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:17,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:08:17,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:17,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:17,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102902418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:17,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:17,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 16:08:17,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396777342] [2024-11-13 16:08:17,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:17,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:08:17,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:17,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:08:17,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:08:17,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:08:17,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 193 transitions, 3722 flow. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:17,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:17,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:08:17,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:17,377 INFO L124 PetriNetUnfolderBase]: 386/980 cut-off events. [2024-11-13 16:08:17,377 INFO L125 PetriNetUnfolderBase]: For 10333/10333 co-relation queries the response was YES. [2024-11-13 16:08:17,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6013 conditions, 980 events. 386/980 cut-off events. For 10333/10333 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6516 event pairs, 66 based on Foata normal form. 6/955 useless extension candidates. Maximal degree in co-relation 5963. Up to 509 conditions per place. [2024-11-13 16:08:17,382 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 94 selfloop transitions, 52 changer transitions 2/207 dead transitions. [2024-11-13 16:08:17,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 207 transitions, 4025 flow [2024-11-13 16:08:17,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:08:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:08:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-13 16:08:17,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-13 16:08:17,383 INFO L175 Difference]: Start difference. First operand has 195 places, 193 transitions, 3722 flow. Second operand 9 states and 87 transitions. [2024-11-13 16:08:17,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 207 transitions, 4025 flow [2024-11-13 16:08:17,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 207 transitions, 3547 flow, removed 10 selfloop flow, removed 20 redundant places. [2024-11-13 16:08:17,417 INFO L231 Difference]: Finished difference. Result has 180 places, 191 transitions, 3287 flow [2024-11-13 16:08:17,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3108, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3287, PETRI_PLACES=180, PETRI_TRANSITIONS=191} [2024-11-13 16:08:17,418 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 156 predicate places. [2024-11-13 16:08:17,418 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 191 transitions, 3287 flow [2024-11-13 16:08:17,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:17,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:17,419 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:17,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 16:08:17,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:17,622 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:17,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash 320629315, now seen corresponding path program 24 times [2024-11-13 16:08:17,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:17,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601056055] [2024-11-13 16:08:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:17,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:17,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:17,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601056055] [2024-11-13 16:08:17,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601056055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:17,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344166392] [2024-11-13 16:08:17,660 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:08:17,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:17,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:17,662 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:17,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 16:08:17,704 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 16:08:17,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:17,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:08:17,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:17,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:17,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344166392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:17,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:17,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 16:08:17,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103866731] [2024-11-13 16:08:17,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:17,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:08:17,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:08:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:08:17,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:08:17,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 191 transitions, 3287 flow. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:17,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:17,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:08:17,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:18,163 INFO L124 PetriNetUnfolderBase]: 388/943 cut-off events. [2024-11-13 16:08:18,163 INFO L125 PetriNetUnfolderBase]: For 9299/9299 co-relation queries the response was YES. [2024-11-13 16:08:18,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5588 conditions, 943 events. 388/943 cut-off events. For 9299/9299 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5985 event pairs, 91 based on Foata normal form. 20/939 useless extension candidates. Maximal degree in co-relation 5543. Up to 349 conditions per place. [2024-11-13 16:08:18,168 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 106 selfloop transitions, 77 changer transitions 5/233 dead transitions. [2024-11-13 16:08:18,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 233 transitions, 3863 flow [2024-11-13 16:08:18,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 16:08:18,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 16:08:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 156 transitions. [2024-11-13 16:08:18,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-11-13 16:08:18,169 INFO L175 Difference]: Start difference. First operand has 180 places, 191 transitions, 3287 flow. Second operand 16 states and 156 transitions. [2024-11-13 16:08:18,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 233 transitions, 3863 flow [2024-11-13 16:08:18,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 233 transitions, 3743 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-11-13 16:08:18,197 INFO L231 Difference]: Finished difference. Result has 188 places, 191 transitions, 3344 flow [2024-11-13 16:08:18,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3344, PETRI_PLACES=188, PETRI_TRANSITIONS=191} [2024-11-13 16:08:18,197 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 164 predicate places. [2024-11-13 16:08:18,197 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 191 transitions, 3344 flow [2024-11-13 16:08:18,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:18,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:18,197 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:18,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-13 16:08:18,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-13 16:08:18,398 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:18,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:18,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2002589329, now seen corresponding path program 25 times [2024-11-13 16:08:18,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:18,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759866079] [2024-11-13 16:08:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:18,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:18,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:18,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759866079] [2024-11-13 16:08:18,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759866079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:18,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231874967] [2024-11-13 16:08:18,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:08:18,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:18,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:18,445 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:18,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 16:08:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:18,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:08:18,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:18,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231874967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:18,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:18,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-13 16:08:18,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28658388] [2024-11-13 16:08:18,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:18,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:08:18,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:18,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:08:18,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:08:18,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:08:18,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 191 transitions, 3344 flow. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:18,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:18,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:08:18,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:18,884 INFO L124 PetriNetUnfolderBase]: 421/1007 cut-off events. [2024-11-13 16:08:18,884 INFO L125 PetriNetUnfolderBase]: For 9859/9859 co-relation queries the response was YES. [2024-11-13 16:08:18,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6183 conditions, 1007 events. 421/1007 cut-off events. For 9859/9859 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6434 event pairs, 113 based on Foata normal form. 8/991 useless extension candidates. Maximal degree in co-relation 6135. Up to 392 conditions per place. [2024-11-13 16:08:18,892 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 118 selfloop transitions, 68 changer transitions 2/231 dead transitions. [2024-11-13 16:08:18,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 231 transitions, 4132 flow [2024-11-13 16:08:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:08:18,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 16:08:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-11-13 16:08:18,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-11-13 16:08:18,893 INFO L175 Difference]: Start difference. First operand has 188 places, 191 transitions, 3344 flow. Second operand 12 states and 118 transitions. [2024-11-13 16:08:18,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 231 transitions, 4132 flow [2024-11-13 16:08:18,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 231 transitions, 3884 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-11-13 16:08:18,944 INFO L231 Difference]: Finished difference. Result has 194 places, 207 transitions, 3656 flow [2024-11-13 16:08:18,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3656, PETRI_PLACES=194, PETRI_TRANSITIONS=207} [2024-11-13 16:08:18,945 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 170 predicate places. [2024-11-13 16:08:18,945 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 207 transitions, 3656 flow [2024-11-13 16:08:18,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:18,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:18,945 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:18,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 16:08:19,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-13 16:08:19,146 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:19,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:19,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1794626650, now seen corresponding path program 26 times [2024-11-13 16:08:19,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:19,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676618734] [2024-11-13 16:08:19,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:19,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:19,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676618734] [2024-11-13 16:08:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676618734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574698916] [2024-11-13 16:08:19,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:08:19,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:19,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:19,181 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:19,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 16:08:19,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:08:19,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:19,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:08:19,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:19,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:19,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574698916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:19,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:19,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-11-13 16:08:19,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622009367] [2024-11-13 16:08:19,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:19,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:08:19,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:08:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:08:19,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:08:19,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 207 transitions, 3656 flow. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:19,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:19,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:08:19,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:19,553 INFO L124 PetriNetUnfolderBase]: 415/993 cut-off events. [2024-11-13 16:08:19,553 INFO L125 PetriNetUnfolderBase]: For 9270/9270 co-relation queries the response was YES. [2024-11-13 16:08:19,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 993 events. 415/993 cut-off events. For 9270/9270 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6311 event pairs, 63 based on Foata normal form. 5/966 useless extension candidates. Maximal degree in co-relation 6072. Up to 423 conditions per place. [2024-11-13 16:08:19,561 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 117 selfloop transitions, 59 changer transitions 5/222 dead transitions. [2024-11-13 16:08:19,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 222 transitions, 4074 flow [2024-11-13 16:08:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:08:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 16:08:19,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-11-13 16:08:19,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.512987012987013 [2024-11-13 16:08:19,563 INFO L175 Difference]: Start difference. First operand has 194 places, 207 transitions, 3656 flow. Second operand 7 states and 79 transitions. [2024-11-13 16:08:19,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 222 transitions, 4074 flow [2024-11-13 16:08:19,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 222 transitions, 4019 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-11-13 16:08:19,616 INFO L231 Difference]: Finished difference. Result has 191 places, 203 transitions, 3656 flow [2024-11-13 16:08:19,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3578, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3656, PETRI_PLACES=191, PETRI_TRANSITIONS=203} [2024-11-13 16:08:19,616 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 167 predicate places. [2024-11-13 16:08:19,616 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 203 transitions, 3656 flow [2024-11-13 16:08:19,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:19,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:19,616 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:19,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 16:08:19,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-13 16:08:19,817 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:19,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:19,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2042915714, now seen corresponding path program 27 times [2024-11-13 16:08:19,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:19,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008293139] [2024-11-13 16:08:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:19,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:19,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:19,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008293139] [2024-11-13 16:08:19,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008293139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:19,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553198913] [2024-11-13 16:08:19,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:08:19,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:19,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:19,859 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:19,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 16:08:19,917 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 16:08:19,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:19,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:08:19,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:19,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553198913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:20,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 16:08:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135632746] [2024-11-13 16:08:20,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:20,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:08:20,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:08:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:08:20,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-13 16:08:20,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 203 transitions, 3656 flow. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:20,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:20,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-13 16:08:20,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:20,333 INFO L124 PetriNetUnfolderBase]: 403/954 cut-off events. [2024-11-13 16:08:20,333 INFO L125 PetriNetUnfolderBase]: For 10457/10457 co-relation queries the response was YES. [2024-11-13 16:08:20,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6037 conditions, 954 events. 403/954 cut-off events. For 10457/10457 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5846 event pairs, 112 based on Foata normal form. 17/941 useless extension candidates. Maximal degree in co-relation 5983. Up to 346 conditions per place. [2024-11-13 16:08:20,339 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 143 selfloop transitions, 56 changer transitions 6/235 dead transitions. [2024-11-13 16:08:20,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 235 transitions, 4254 flow [2024-11-13 16:08:20,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:08:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 16:08:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 141 transitions. [2024-11-13 16:08:20,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-11-13 16:08:20,340 INFO L175 Difference]: Start difference. First operand has 191 places, 203 transitions, 3656 flow. Second operand 14 states and 141 transitions. [2024-11-13 16:08:20,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 235 transitions, 4254 flow [2024-11-13 16:08:20,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 235 transitions, 4136 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-13 16:08:20,375 INFO L231 Difference]: Finished difference. Result has 203 places, 196 transitions, 3546 flow [2024-11-13 16:08:20,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3546, PETRI_PLACES=203, PETRI_TRANSITIONS=196} [2024-11-13 16:08:20,376 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 179 predicate places. [2024-11-13 16:08:20,376 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 196 transitions, 3546 flow [2024-11-13 16:08:20,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:20,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:20,376 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:20,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-13 16:08:20,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-13 16:08:20,577 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:20,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:20,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1535871822, now seen corresponding path program 28 times [2024-11-13 16:08:20,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:20,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828258007] [2024-11-13 16:08:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:20,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:20,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:20,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828258007] [2024-11-13 16:08:20,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828258007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:20,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187086938] [2024-11-13 16:08:20,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:08:20,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:20,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:20,704 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:20,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 16:08:20,748 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:08:20,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:20,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:08:20,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:20,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:21,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187086938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:21,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:21,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-13 16:08:21,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948646447] [2024-11-13 16:08:21,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:21,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 16:08:21,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:21,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 16:08:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2024-11-13 16:08:21,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:21,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 196 transitions, 3546 flow. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:21,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:21,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:21,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:21,734 INFO L124 PetriNetUnfolderBase]: 593/1265 cut-off events. [2024-11-13 16:08:21,734 INFO L125 PetriNetUnfolderBase]: For 12481/12481 co-relation queries the response was YES. [2024-11-13 16:08:21,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8011 conditions, 1265 events. 593/1265 cut-off events. For 12481/12481 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7513 event pairs, 6 based on Foata normal form. 6/1271 useless extension candidates. Maximal degree in co-relation 7953. Up to 335 conditions per place. [2024-11-13 16:08:21,740 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 149 selfloop transitions, 87 changer transitions 28/265 dead transitions. [2024-11-13 16:08:21,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 265 transitions, 4974 flow [2024-11-13 16:08:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:08:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 16:08:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 117 transitions. [2024-11-13 16:08:21,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-11-13 16:08:21,740 INFO L175 Difference]: Start difference. First operand has 203 places, 196 transitions, 3546 flow. Second operand 15 states and 117 transitions. [2024-11-13 16:08:21,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 265 transitions, 4974 flow [2024-11-13 16:08:21,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 265 transitions, 4863 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-11-13 16:08:21,787 INFO L231 Difference]: Finished difference. Result has 215 places, 202 transitions, 3885 flow [2024-11-13 16:08:21,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3445, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3885, PETRI_PLACES=215, PETRI_TRANSITIONS=202} [2024-11-13 16:08:21,788 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 191 predicate places. [2024-11-13 16:08:21,788 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 202 transitions, 3885 flow [2024-11-13 16:08:21,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:21,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:21,788 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:21,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 16:08:21,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:21,989 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:21,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash 112420662, now seen corresponding path program 29 times [2024-11-13 16:08:21,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:21,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854465883] [2024-11-13 16:08:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:21,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:22,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854465883] [2024-11-13 16:08:22,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854465883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629290194] [2024-11-13 16:08:22,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:08:22,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:22,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:22,115 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:22,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 16:08:22,158 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 16:08:22,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:22,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 16:08:22,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:08:22,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:08:22,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629290194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:22,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:22,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 21 [2024-11-13 16:08:22,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167439767] [2024-11-13 16:08:22,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:22,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:08:22,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:08:22,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:08:22,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:22,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 202 transitions, 3885 flow. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:22,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:22,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:22,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:22,902 INFO L124 PetriNetUnfolderBase]: 505/1053 cut-off events. [2024-11-13 16:08:22,903 INFO L125 PetriNetUnfolderBase]: For 12148/12148 co-relation queries the response was YES. [2024-11-13 16:08:22,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7240 conditions, 1053 events. 505/1053 cut-off events. For 12148/12148 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5778 event pairs, 11 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 7179. Up to 337 conditions per place. [2024-11-13 16:08:22,908 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 136 selfloop transitions, 84 changer transitions 11/232 dead transitions. [2024-11-13 16:08:22,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 232 transitions, 4454 flow [2024-11-13 16:08:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 16:08:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 16:08:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 122 transitions. [2024-11-13 16:08:22,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-11-13 16:08:22,909 INFO L175 Difference]: Start difference. First operand has 215 places, 202 transitions, 3885 flow. Second operand 16 states and 122 transitions. [2024-11-13 16:08:22,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 232 transitions, 4454 flow [2024-11-13 16:08:22,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 232 transitions, 4317 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-11-13 16:08:22,969 INFO L231 Difference]: Finished difference. Result has 214 places, 198 transitions, 3849 flow [2024-11-13 16:08:22,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3748, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3849, PETRI_PLACES=214, PETRI_TRANSITIONS=198} [2024-11-13 16:08:22,970 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 190 predicate places. [2024-11-13 16:08:22,970 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 198 transitions, 3849 flow [2024-11-13 16:08:22,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:22,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:22,971 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:22,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-13 16:08:23,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:23,171 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:23,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:23,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1217776510, now seen corresponding path program 30 times [2024-11-13 16:08:23,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:23,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503992416] [2024-11-13 16:08:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:23,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:23,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:23,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503992416] [2024-11-13 16:08:23,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503992416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:23,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371371351] [2024-11-13 16:08:23,327 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:08:23,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:23,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:23,331 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:23,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 16:08:23,374 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 16:08:23,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:23,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:08:23,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:23,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:23,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371371351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:23,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:23,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-13 16:08:23,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117513939] [2024-11-13 16:08:23,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:23,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 16:08:23,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:23,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 16:08:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2024-11-13 16:08:23,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:23,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 198 transitions, 3849 flow. Second operand has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 30 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:23,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:23,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:23,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:25,117 INFO L124 PetriNetUnfolderBase]: 697/1401 cut-off events. [2024-11-13 16:08:25,117 INFO L125 PetriNetUnfolderBase]: For 17572/17572 co-relation queries the response was YES. [2024-11-13 16:08:25,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10223 conditions, 1401 events. 697/1401 cut-off events. For 17572/17572 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8169 event pairs, 12 based on Foata normal form. 1/1402 useless extension candidates. Maximal degree in co-relation 10165. Up to 297 conditions per place. [2024-11-13 16:08:25,124 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 142 selfloop transitions, 228 changer transitions 9/380 dead transitions. [2024-11-13 16:08:25,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 380 transitions, 7173 flow [2024-11-13 16:08:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 16:08:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-13 16:08:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 280 transitions. [2024-11-13 16:08:25,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32634032634032634 [2024-11-13 16:08:25,125 INFO L175 Difference]: Start difference. First operand has 214 places, 198 transitions, 3849 flow. Second operand 39 states and 280 transitions. [2024-11-13 16:08:25,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 380 transitions, 7173 flow [2024-11-13 16:08:25,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 380 transitions, 6827 flow, removed 5 selfloop flow, removed 16 redundant places. [2024-11-13 16:08:25,184 INFO L231 Difference]: Finished difference. Result has 240 places, 294 transitions, 6310 flow [2024-11-13 16:08:25,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6310, PETRI_PLACES=240, PETRI_TRANSITIONS=294} [2024-11-13 16:08:25,185 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 216 predicate places. [2024-11-13 16:08:25,185 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 294 transitions, 6310 flow [2024-11-13 16:08:25,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 30 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:25,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:25,185 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:25,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 16:08:25,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:25,386 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:25,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1165978912, now seen corresponding path program 31 times [2024-11-13 16:08:25,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:25,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481091652] [2024-11-13 16:08:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:25,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:25,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:25,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481091652] [2024-11-13 16:08:25,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481091652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:25,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397328466] [2024-11-13 16:08:25,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:08:25,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:25,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:25,538 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:25,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 16:08:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:25,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:08:25,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:25,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:25,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397328466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:25,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:25,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-13 16:08:25,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503221400] [2024-11-13 16:08:25,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:25,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 16:08:25,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:25,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 16:08:25,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2024-11-13 16:08:25,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:25,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 294 transitions, 6310 flow. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:25,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:25,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:25,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:26,632 INFO L124 PetriNetUnfolderBase]: 729/1481 cut-off events. [2024-11-13 16:08:26,632 INFO L125 PetriNetUnfolderBase]: For 17745/17745 co-relation queries the response was YES. [2024-11-13 16:08:26,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11033 conditions, 1481 events. 729/1481 cut-off events. For 17745/17745 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8790 event pairs, 9 based on Foata normal form. 7/1488 useless extension candidates. Maximal degree in co-relation 10968. Up to 365 conditions per place. [2024-11-13 16:08:26,639 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 77 selfloop transitions, 47 changer transitions 206/331 dead transitions. [2024-11-13 16:08:26,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 331 transitions, 7256 flow [2024-11-13 16:08:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:08:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 16:08:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 108 transitions. [2024-11-13 16:08:26,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-11-13 16:08:26,640 INFO L175 Difference]: Start difference. First operand has 240 places, 294 transitions, 6310 flow. Second operand 14 states and 108 transitions. [2024-11-13 16:08:26,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 331 transitions, 7256 flow [2024-11-13 16:08:26,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 331 transitions, 6835 flow, removed 161 selfloop flow, removed 12 redundant places. [2024-11-13 16:08:26,730 INFO L231 Difference]: Finished difference. Result has 241 places, 113 transitions, 2169 flow [2024-11-13 16:08:26,731 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5911, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2169, PETRI_PLACES=241, PETRI_TRANSITIONS=113} [2024-11-13 16:08:26,731 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 217 predicate places. [2024-11-13 16:08:26,731 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 113 transitions, 2169 flow [2024-11-13 16:08:26,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:26,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:26,731 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:26,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 16:08:26,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:26,932 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:26,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1208173080, now seen corresponding path program 32 times [2024-11-13 16:08:26,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:26,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3063256] [2024-11-13 16:08:26,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:26,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:27,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:27,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3063256] [2024-11-13 16:08:27,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3063256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:27,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539216022] [2024-11-13 16:08:27,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:08:27,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:27,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:27,046 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:27,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 16:08:27,088 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:08:27,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:27,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:08:27,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:27,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:27,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539216022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:27,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:27,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-13 16:08:27,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653861572] [2024-11-13 16:08:27,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:27,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 16:08:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 16:08:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-11-13 16:08:27,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:27,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 113 transitions, 2169 flow. Second operand has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:27,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:27,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:27,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:28,304 INFO L124 PetriNetUnfolderBase]: 305/721 cut-off events. [2024-11-13 16:08:28,305 INFO L125 PetriNetUnfolderBase]: For 5839/5839 co-relation queries the response was YES. [2024-11-13 16:08:28,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 721 events. 305/721 cut-off events. For 5839/5839 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4001 event pairs, 1 based on Foata normal form. 8/729 useless extension candidates. Maximal degree in co-relation 4348. Up to 172 conditions per place. [2024-11-13 16:08:28,308 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 71 selfloop transitions, 66 changer transitions 38/176 dead transitions. [2024-11-13 16:08:28,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 176 transitions, 2912 flow [2024-11-13 16:08:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 16:08:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-13 16:08:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 202 transitions. [2024-11-13 16:08:28,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3166144200626959 [2024-11-13 16:08:28,309 INFO L175 Difference]: Start difference. First operand has 241 places, 113 transitions, 2169 flow. Second operand 29 states and 202 transitions. [2024-11-13 16:08:28,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 176 transitions, 2912 flow [2024-11-13 16:08:28,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 176 transitions, 2041 flow, removed 81 selfloop flow, removed 57 redundant places. [2024-11-13 16:08:28,328 INFO L231 Difference]: Finished difference. Result has 186 places, 100 transitions, 1367 flow [2024-11-13 16:08:28,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1367, PETRI_PLACES=186, PETRI_TRANSITIONS=100} [2024-11-13 16:08:28,329 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 162 predicate places. [2024-11-13 16:08:28,329 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 100 transitions, 1367 flow [2024-11-13 16:08:28,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:28,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:28,329 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:28,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 16:08:28,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:28,530 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:28,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash 621145680, now seen corresponding path program 33 times [2024-11-13 16:08:28,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:28,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539110321] [2024-11-13 16:08:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:28,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:28,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:28,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539110321] [2024-11-13 16:08:28,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539110321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:28,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487693819] [2024-11-13 16:08:28,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:08:28,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:28,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:28,652 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:28,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 16:08:28,695 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 16:08:28,695 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:28,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:08:28,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:28,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:29,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487693819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:29,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:29,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-13 16:08:29,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430205902] [2024-11-13 16:08:29,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:29,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 16:08:29,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:29,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 16:08:29,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2024-11-13 16:08:29,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:29,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 100 transitions, 1367 flow. Second operand has 25 states, 25 states have (on average 4.4) internal successors, (110), 25 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:29,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:29,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:29,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:29,752 INFO L124 PetriNetUnfolderBase]: 232/544 cut-off events. [2024-11-13 16:08:29,752 INFO L125 PetriNetUnfolderBase]: For 1584/1584 co-relation queries the response was YES. [2024-11-13 16:08:29,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 544 events. 232/544 cut-off events. For 1584/1584 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2720 event pairs, 7 based on Foata normal form. 3/539 useless extension candidates. Maximal degree in co-relation 2731. Up to 130 conditions per place. [2024-11-13 16:08:29,755 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 60 selfloop transitions, 59 changer transitions 23/143 dead transitions. [2024-11-13 16:08:29,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 143 transitions, 1754 flow [2024-11-13 16:08:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 16:08:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 16:08:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 170 transitions. [2024-11-13 16:08:29,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2972027972027972 [2024-11-13 16:08:29,756 INFO L175 Difference]: Start difference. First operand has 186 places, 100 transitions, 1367 flow. Second operand 26 states and 170 transitions. [2024-11-13 16:08:29,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 143 transitions, 1754 flow [2024-11-13 16:08:29,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 143 transitions, 1460 flow, removed 16 selfloop flow, removed 30 redundant places. [2024-11-13 16:08:29,763 INFO L231 Difference]: Finished difference. Result has 166 places, 90 transitions, 1036 flow [2024-11-13 16:08:29,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1036, PETRI_PLACES=166, PETRI_TRANSITIONS=90} [2024-11-13 16:08:29,764 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 142 predicate places. [2024-11-13 16:08:29,764 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 90 transitions, 1036 flow [2024-11-13 16:08:29,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.4) internal successors, (110), 25 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:29,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:29,764 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:29,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 16:08:29,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:29,965 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:29,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:29,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1792440800, now seen corresponding path program 34 times [2024-11-13 16:08:29,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:29,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582563999] [2024-11-13 16:08:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:29,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:30,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:30,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582563999] [2024-11-13 16:08:30,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582563999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:30,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117254802] [2024-11-13 16:08:30,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:08:30,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:30,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:30,126 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:30,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 16:08:30,178 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:08:30,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:30,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:08:30,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:30,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:30,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117254802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:30,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:30,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-11-13 16:08:30,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844818325] [2024-11-13 16:08:30,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:30,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 16:08:30,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:30,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 16:08:30,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2024-11-13 16:08:30,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:30,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 90 transitions, 1036 flow. Second operand has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 27 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:30,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:30,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:30,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:31,132 INFO L124 PetriNetUnfolderBase]: 229/538 cut-off events. [2024-11-13 16:08:31,133 INFO L125 PetriNetUnfolderBase]: For 1407/1407 co-relation queries the response was YES. [2024-11-13 16:08:31,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 538 events. 229/538 cut-off events. For 1407/1407 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2676 event pairs, 51 based on Foata normal form. 3/533 useless extension candidates. Maximal degree in co-relation 2488. Up to 183 conditions per place. [2024-11-13 16:08:31,135 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 62 selfloop transitions, 51 changer transitions 19/133 dead transitions. [2024-11-13 16:08:31,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 133 transitions, 1538 flow [2024-11-13 16:08:31,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:08:31,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-13 16:08:31,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 136 transitions. [2024-11-13 16:08:31,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3253588516746411 [2024-11-13 16:08:31,136 INFO L175 Difference]: Start difference. First operand has 166 places, 90 transitions, 1036 flow. Second operand 19 states and 136 transitions. [2024-11-13 16:08:31,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 133 transitions, 1538 flow [2024-11-13 16:08:31,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 133 transitions, 1330 flow, removed 4 selfloop flow, removed 21 redundant places. [2024-11-13 16:08:31,144 INFO L231 Difference]: Finished difference. Result has 151 places, 87 transitions, 960 flow [2024-11-13 16:08:31,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=960, PETRI_PLACES=151, PETRI_TRANSITIONS=87} [2024-11-13 16:08:31,147 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 127 predicate places. [2024-11-13 16:08:31,147 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 87 transitions, 960 flow [2024-11-13 16:08:31,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 27 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:31,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:31,148 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:31,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-13 16:08:31,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:31,351 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:31,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2078426498, now seen corresponding path program 35 times [2024-11-13 16:08:31,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:31,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749727631] [2024-11-13 16:08:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:31,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:31,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749727631] [2024-11-13 16:08:31,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749727631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:31,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047566432] [2024-11-13 16:08:31,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:08:31,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:31,505 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:31,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 16:08:31,555 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 16:08:31,556 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:31,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 16:08:31,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:08:31,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:08:31,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047566432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:31,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:31,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 21 [2024-11-13 16:08:31,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211033454] [2024-11-13 16:08:31,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:31,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:08:31,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:31,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:08:31,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:08:31,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:31,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 87 transitions, 960 flow. Second operand has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:31,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:31,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:31,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:32,126 INFO L124 PetriNetUnfolderBase]: 185/430 cut-off events. [2024-11-13 16:08:32,127 INFO L125 PetriNetUnfolderBase]: For 1024/1024 co-relation queries the response was YES. [2024-11-13 16:08:32,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 430 events. 185/430 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1927 event pairs, 4 based on Foata normal form. 4/430 useless extension candidates. Maximal degree in co-relation 2005. Up to 100 conditions per place. [2024-11-13 16:08:32,129 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 43 selfloop transitions, 40 changer transitions 33/117 dead transitions. [2024-11-13 16:08:32,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 117 transitions, 1267 flow [2024-11-13 16:08:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:08:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-13 16:08:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 127 transitions. [2024-11-13 16:08:32,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3038277511961722 [2024-11-13 16:08:32,130 INFO L175 Difference]: Start difference. First operand has 151 places, 87 transitions, 960 flow. Second operand 19 states and 127 transitions. [2024-11-13 16:08:32,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 117 transitions, 1267 flow [2024-11-13 16:08:32,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 117 transitions, 1167 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-11-13 16:08:32,138 INFO L231 Difference]: Finished difference. Result has 152 places, 65 transitions, 669 flow [2024-11-13 16:08:32,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=669, PETRI_PLACES=152, PETRI_TRANSITIONS=65} [2024-11-13 16:08:32,138 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 128 predicate places. [2024-11-13 16:08:32,139 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 65 transitions, 669 flow [2024-11-13 16:08:32,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:32,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:32,139 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:32,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 16:08:32,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:32,340 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:32,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:32,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1205413400, now seen corresponding path program 36 times [2024-11-13 16:08:32,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:32,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387419581] [2024-11-13 16:08:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:32,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:32,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387419581] [2024-11-13 16:08:32,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387419581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:32,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56705457] [2024-11-13 16:08:32,470 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:08:32,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:32,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:32,472 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:32,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 16:08:32,514 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 16:08:32,514 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:32,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:08:32,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:32,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:32,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56705457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:32,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:32,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 28 [2024-11-13 16:08:32,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683033666] [2024-11-13 16:08:32,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:32,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 16:08:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 16:08:32,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-11-13 16:08:32,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:32,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 65 transitions, 669 flow. Second operand has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 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) [2024-11-13 16:08:32,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:32,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:32,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:33,830 INFO L124 PetriNetUnfolderBase]: 124/282 cut-off events. [2024-11-13 16:08:33,830 INFO L125 PetriNetUnfolderBase]: For 933/933 co-relation queries the response was YES. [2024-11-13 16:08:33,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 282 events. 124/282 cut-off events. For 933/933 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1034 event pairs, 1 based on Foata normal form. 6/288 useless extension candidates. Maximal degree in co-relation 1411. Up to 70 conditions per place. [2024-11-13 16:08:33,832 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 24 selfloop transitions, 8 changer transitions 85/118 dead transitions. [2024-11-13 16:08:33,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 118 transitions, 1146 flow [2024-11-13 16:08:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 16:08:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-13 16:08:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 188 transitions. [2024-11-13 16:08:33,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2756598240469208 [2024-11-13 16:08:33,833 INFO L175 Difference]: Start difference. First operand has 152 places, 65 transitions, 669 flow. Second operand 31 states and 188 transitions. [2024-11-13 16:08:33,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 118 transitions, 1146 flow [2024-11-13 16:08:33,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 118 transitions, 923 flow, removed 9 selfloop flow, removed 27 redundant places. [2024-11-13 16:08:33,839 INFO L231 Difference]: Finished difference. Result has 136 places, 26 transitions, 161 flow [2024-11-13 16:08:33,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=161, PETRI_PLACES=136, PETRI_TRANSITIONS=26} [2024-11-13 16:08:33,839 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 112 predicate places. [2024-11-13 16:08:33,840 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 26 transitions, 161 flow [2024-11-13 16:08:33,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 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) [2024-11-13 16:08:33,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:08:33,840 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:33,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 16:08:34,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:34,041 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 16:08:34,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1920712366, now seen corresponding path program 37 times [2024-11-13 16:08:34,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:34,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901311501] [2024-11-13 16:08:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:34,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:34,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:34,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901311501] [2024-11-13 16:08:34,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901311501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420089079] [2024-11-13 16:08:34,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:08:34,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:34,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:34,155 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:34,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 16:08:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:34,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:08:34,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:34,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:34,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420089079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:34,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:34,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-13 16:08:34,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239423232] [2024-11-13 16:08:34,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:34,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 16:08:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 16:08:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2024-11-13 16:08:34,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-13 16:08:34,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 26 transitions, 161 flow. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:34,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:08:34,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-13 16:08:34,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:08:34,895 INFO L124 PetriNetUnfolderBase]: 28/70 cut-off events. [2024-11-13 16:08:34,895 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-13 16:08:34,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 70 events. 28/70 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 289. Up to 20 conditions per place. [2024-11-13 16:08:34,896 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2024-11-13 16:08:34,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 35 transitions, 247 flow [2024-11-13 16:08:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:08:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 16:08:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 72 transitions. [2024-11-13 16:08:34,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2517482517482518 [2024-11-13 16:08:34,896 INFO L175 Difference]: Start difference. First operand has 136 places, 26 transitions, 161 flow. Second operand 13 states and 72 transitions. [2024-11-13 16:08:34,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 35 transitions, 247 flow [2024-11-13 16:08:34,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 35 transitions, 173 flow, removed 9 selfloop flow, removed 25 redundant places. [2024-11-13 16:08:34,897 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2024-11-13 16:08:34,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2024-11-13 16:08:34,898 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 42 predicate places. [2024-11-13 16:08:34,898 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2024-11-13 16:08:34,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:34,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-13 16:08:34,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-13 16:08:34,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-13 16:08:34,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 16:08:35,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:35,101 INFO L407 BasicCegarLoop]: Path program histogram: [37, 20, 5, 5] [2024-11-13 16:08:35,103 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 16:08:35,103 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 16:08:35,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 04:08:35 BasicIcfg [2024-11-13 16:08:35,108 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 16:08:35,109 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 16:08:35,109 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 16:08:35,109 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 16:08:35,109 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:07:10" (3/4) ... [2024-11-13 16:08:35,112 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 16:08:35,114 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-13 16:08:35,114 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-13 16:08:35,117 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-11-13 16:08:35,117 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-13 16:08:35,117 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 16:08:35,117 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 16:08:35,206 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 16:08:35,206 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 16:08:35,206 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 16:08:35,208 INFO L158 Benchmark]: Toolchain (without parser) took 85954.58ms. Allocated memory was 142.6MB in the beginning and 830.5MB in the end (delta: 687.9MB). Free memory was 104.8MB in the beginning and 252.7MB in the end (delta: -147.8MB). Peak memory consumption was 538.2MB. Max. memory is 16.1GB. [2024-11-13 16:08:35,208 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:08:35,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.41ms. Allocated memory is still 142.6MB. Free memory was 104.8MB in the beginning and 93.4MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:08:35,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.73ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 92.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:08:35,211 INFO L158 Benchmark]: Boogie Preprocessor took 64.13ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 90.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:08:35,212 INFO L158 Benchmark]: RCFGBuilder took 586.01ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 73.0MB in the end (delta: 17.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 16:08:35,213 INFO L158 Benchmark]: TraceAbstraction took 84801.70ms. Allocated memory was 142.6MB in the beginning and 830.5MB in the end (delta: 687.9MB). Free memory was 72.3MB in the beginning and 257.1MB in the end (delta: -184.8MB). Peak memory consumption was 504.7MB. Max. memory is 16.1GB. [2024-11-13 16:08:35,213 INFO L158 Benchmark]: Witness Printer took 97.90ms. Allocated memory is still 830.5MB. Free memory was 257.1MB in the beginning and 252.7MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:08:35,215 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.41ms. Allocated memory is still 142.6MB. Free memory was 104.8MB in the beginning and 93.4MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.73ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 92.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 64.13ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 90.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 586.01ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 73.0MB in the end (delta: 17.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 84801.70ms. Allocated memory was 142.6MB in the beginning and 830.5MB in the end (delta: 687.9MB). Free memory was 72.3MB in the beginning and 257.1MB in the end (delta: -184.8MB). Peak memory consumption was 504.7MB. Max. memory is 16.1GB. * Witness Printer took 97.90ms. Allocated memory is still 830.5MB. Free memory was 257.1MB in the beginning and 252.7MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 84.7s, OverallIterations: 67, TraceHistogramMax: 2, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 50.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4040 SdHoareTripleChecker+Valid, 19.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3997 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 16.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 992 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27227 IncrementalHoareTripleChecker+Invalid, 28219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 992 mSolverCounterUnsat, 19 mSDtfsCounter, 27227 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2614 GetRequests, 1133 SyntacticMatches, 7 SemanticMatches, 1474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11944 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11160occurred in iteration=45, InterpolantAutomatonStates: 969, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 23.4s InterpolantComputationTime, 1994 NumberOfCodeBlocks, 1994 NumberOfCodeBlocksAsserted, 144 NumberOfCheckSat, 2579 ConstructedInterpolants, 0 QuantifiedInterpolants, 14531 SizeOfPredicates, 132 NumberOfNonLiveVariables, 3758 ConjunctsInSsa, 493 ConjunctsInUnsatCore, 142 InterpolantComputations, 31 PerfectInterpolantSequences, 66/382 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 16:08:35,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385f697-344d-4f46-b8f8-9866201aaf7c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE