./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:23:23,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:23:23,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:23:23,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:23:23,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:23:23,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:23:23,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:23:23,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:23:23,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:23:23,937 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:23:23,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:23:23,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:23:23,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:23:23,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:23:23,940 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:23:23,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:23:23,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:23:23,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:23:23,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:23:23,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:23:23,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:23:23,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:23:23,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:23:23,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:23:23,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:23:23,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:23:23,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:23:23,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:23:23,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:23:23,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:23:23,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:23:23,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:23:23,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:23:23,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:23:23,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:23:23,946 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:23:23,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:23:23,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:23:23,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:23:23,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:23:23,947 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:23:23,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:23:23,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:23:23,947 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2024-01-27 15:23:24,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:23:24,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:23:24,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:23:24,184 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:23:24,185 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:23:24,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2024-01-27 15:23:25,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:23:25,552 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:23:25,553 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2024-01-27 15:23:25,585 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5591189f/4ee23dd3cdf947c4932a87ff423c7453/FLAG4e6a54a26 [2024-01-27 15:23:25,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5591189f/4ee23dd3cdf947c4932a87ff423c7453 [2024-01-27 15:23:25,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:23:25,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:23:25,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:23:25,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:23:25,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:23:25,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:25,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1533d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25, skipping insertion in model container [2024-01-27 15:23:25,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:25,640 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:23:25,814 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-01-27 15:23:25,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:23:25,836 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:23:25,867 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-01-27 15:23:25,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:23:25,896 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:23:25,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25 WrapperNode [2024-01-27 15:23:25,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:23:25,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:23:25,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:23:25,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:23:25,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:25,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:25,962 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 319 [2024-01-27 15:23:25,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:23:25,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:23:25,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:23:25,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:23:25,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:25,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:25,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:26,012 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 2, 4, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 15:23:26,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:26,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:26,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:26,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:26,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:26,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:26,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:23:26,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:23:26,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:23:26,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:23:26,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (1/1) ... [2024-01-27 15:23:26,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:23:26,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:23:26,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:23:26,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:23:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:23:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:23:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:23:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:23:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:23:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:23:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:23:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:23:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:23:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:23:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:23:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:23:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:23:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:23:26,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:23:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:23:26,103 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:23:26,233 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:23:26,234 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:23:26,643 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:23:26,643 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:23:26,943 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:23:26,944 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-27 15:23:26,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:23:26 BoogieIcfgContainer [2024-01-27 15:23:26,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:23:26,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:23:26,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:23:26,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:23:26,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:23:25" (1/3) ... [2024-01-27 15:23:26,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5849c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:23:26, skipping insertion in model container [2024-01-27 15:23:26,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:25" (2/3) ... [2024-01-27 15:23:26,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5849c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:23:26, skipping insertion in model container [2024-01-27 15:23:26,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:23:26" (3/3) ... [2024-01-27 15:23:26,950 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-01-27 15:23:26,956 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:23:26,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:23:26,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:23:26,964 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:23:27,006 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:23:27,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 97 flow [2024-01-27 15:23:27,054 INFO L124 PetriNetUnfolderBase]: 7/35 cut-off events. [2024-01-27 15:23:27,054 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:23:27,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 7/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-01-27 15:23:27,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 97 flow [2024-01-27 15:23:27,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 86 flow [2024-01-27 15:23:27,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:23:27,073 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@1baaa141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:23:27,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:23:27,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:23:27,084 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2024-01-27 15:23:27,084 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:23:27,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:27,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:27,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:27,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash 566723653, now seen corresponding path program 1 times [2024-01-27 15:23:27,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:27,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835444997] [2024-01-27 15:23:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:27,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:27,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:27,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835444997] [2024-01-27 15:23:27,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835444997] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:27,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:27,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:23:27,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941302041] [2024-01-27 15:23:27,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:27,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 15:23:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:27,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 15:23:27,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 15:23:27,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:27,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:27,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:27,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:27,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:27,495 INFO L124 PetriNetUnfolderBase]: 466/696 cut-off events. [2024-01-27 15:23:27,495 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-01-27 15:23:27,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1442 conditions, 696 events. 466/696 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2428 event pairs, 333 based on Foata normal form. 132/675 useless extension candidates. Maximal degree in co-relation 1177. Up to 679 conditions per place. [2024-01-27 15:23:27,501 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 27 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2024-01-27 15:23:27,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 134 flow [2024-01-27 15:23:27,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 15:23:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 15:23:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2024-01-27 15:23:27,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-27 15:23:27,511 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 86 flow. Second operand 2 states and 44 transitions. [2024-01-27 15:23:27,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 134 flow [2024-01-27 15:23:27,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:23:27,515 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 68 flow [2024-01-27 15:23:27,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2024-01-27 15:23:27,519 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2024-01-27 15:23:27,519 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 68 flow [2024-01-27 15:23:27,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:27,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:27,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:27,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:23:27,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:27,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1846188191, now seen corresponding path program 1 times [2024-01-27 15:23:27,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457559423] [2024-01-27 15:23:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:27,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:27,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:27,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457559423] [2024-01-27 15:23:27,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457559423] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:27,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:27,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:23:27,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254733486] [2024-01-27 15:23:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:27,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:23:27,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:27,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:23:27,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:23:27,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:27,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:27,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:27,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:27,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:27,840 INFO L124 PetriNetUnfolderBase]: 466/697 cut-off events. [2024-01-27 15:23:27,840 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-27 15:23:27,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 697 events. 466/697 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2434 event pairs, 333 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 1397. Up to 679 conditions per place. [2024-01-27 15:23:27,843 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 26 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-01-27 15:23:27,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 126 flow [2024-01-27 15:23:27,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:23:27,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:23:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-01-27 15:23:27,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-01-27 15:23:27,845 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 68 flow. Second operand 3 states and 50 transitions. [2024-01-27 15:23:27,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 126 flow [2024-01-27 15:23:27,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:23:27,846 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 80 flow [2024-01-27 15:23:27,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-01-27 15:23:27,847 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2024-01-27 15:23:27,847 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 80 flow [2024-01-27 15:23:27,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:27,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:27,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:27,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:23:27,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:27,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1978685021, now seen corresponding path program 1 times [2024-01-27 15:23:27,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:27,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210192269] [2024-01-27 15:23:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:27,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:27,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:27,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210192269] [2024-01-27 15:23:27,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210192269] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:23:27,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389611588] [2024-01-27 15:23:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:27,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:23:27,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:23:27,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:23:27,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:23:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:28,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:23:28,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:23:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:28,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:23:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389611588] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:23:28,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:23:28,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-01-27 15:23:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328185399] [2024-01-27 15:23:28,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:23:28,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:28,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:28,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 80 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 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) [2024-01-27 15:23:28,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:28,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:28,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:28,288 INFO L124 PetriNetUnfolderBase]: 466/699 cut-off events. [2024-01-27 15:23:28,289 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-27 15:23:28,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 699 events. 466/699 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2418 event pairs, 333 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 1408. Up to 679 conditions per place. [2024-01-27 15:23:28,292 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 26 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2024-01-27 15:23:28,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 148 flow [2024-01-27 15:23:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:23:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:23:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-01-27 15:23:28,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526315789473684 [2024-01-27 15:23:28,294 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 80 flow. Second operand 5 states and 67 transitions. [2024-01-27 15:23:28,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 148 flow [2024-01-27 15:23:28,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 144 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:23:28,295 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 102 flow [2024-01-27 15:23:28,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-01-27 15:23:28,296 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-01-27 15:23:28,313 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 102 flow [2024-01-27 15:23:28,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 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) [2024-01-27 15:23:28,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:28,313 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:28,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-27 15:23:28,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:23:28,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:28,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:28,526 INFO L85 PathProgramCache]: Analyzing trace with hash 271554205, now seen corresponding path program 2 times [2024-01-27 15:23:28,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:28,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464896147] [2024-01-27 15:23:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:29,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:29,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464896147] [2024-01-27 15:23:29,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464896147] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:29,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:23:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129758412] [2024-01-27 15:23:29,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:29,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:23:29,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:23:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:23:29,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:29,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:29,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:29,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:29,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:29,345 INFO L124 PetriNetUnfolderBase]: 1084/1703 cut-off events. [2024-01-27 15:23:29,346 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-01-27 15:23:29,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1703 events. 1084/1703 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8251 event pairs, 333 based on Foata normal form. 1/1346 useless extension candidates. Maximal degree in co-relation 3352. Up to 712 conditions per place. [2024-01-27 15:23:29,352 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 72 selfloop transitions, 7 changer transitions 12/95 dead transitions. [2024-01-27 15:23:29,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 95 transitions, 419 flow [2024-01-27 15:23:29,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:29,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-01-27 15:23:29,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2024-01-27 15:23:29,354 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 102 flow. Second operand 6 states and 131 transitions. [2024-01-27 15:23:29,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 95 transitions, 419 flow [2024-01-27 15:23:29,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 95 transitions, 409 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-27 15:23:29,356 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 143 flow [2024-01-27 15:23:29,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-01-27 15:23:29,357 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-01-27 15:23:29,357 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 143 flow [2024-01-27 15:23:29,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:29,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:29,357 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:29,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:23:29,358 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:29,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash -76451693, now seen corresponding path program 3 times [2024-01-27 15:23:29,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:29,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819722470] [2024-01-27 15:23:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:29,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:29,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:29,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819722470] [2024-01-27 15:23:29,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819722470] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:29,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:29,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:23:29,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343584006] [2024-01-27 15:23:29,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:29,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:23:29,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:23:29,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:23:29,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:29,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:29,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:29,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:29,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:30,090 INFO L124 PetriNetUnfolderBase]: 1626/2548 cut-off events. [2024-01-27 15:23:30,091 INFO L125 PetriNetUnfolderBase]: For 1323/1339 co-relation queries the response was YES. [2024-01-27 15:23:30,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6286 conditions, 2548 events. 1626/2548 cut-off events. For 1323/1339 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13395 event pairs, 627 based on Foata normal form. 1/2340 useless extension candidates. Maximal degree in co-relation 6274. Up to 1224 conditions per place. [2024-01-27 15:23:30,103 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 71 selfloop transitions, 8 changer transitions 12/95 dead transitions. [2024-01-27 15:23:30,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 95 transitions, 484 flow [2024-01-27 15:23:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:30,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:30,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-01-27 15:23:30,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2024-01-27 15:23:30,105 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 143 flow. Second operand 6 states and 121 transitions. [2024-01-27 15:23:30,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 95 transitions, 484 flow [2024-01-27 15:23:30,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 95 transitions, 480 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:23:30,107 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 200 flow [2024-01-27 15:23:30,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-01-27 15:23:30,108 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-01-27 15:23:30,108 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 200 flow [2024-01-27 15:23:30,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:30,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:30,109 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:30,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:23:30,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:30,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash -938515465, now seen corresponding path program 4 times [2024-01-27 15:23:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:30,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113041739] [2024-01-27 15:23:30,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:30,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:30,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:30,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113041739] [2024-01-27 15:23:30,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113041739] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:30,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:30,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:23:30,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757173326] [2024-01-27 15:23:30,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:30,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:23:30,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:30,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:23:30,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:23:30,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:30,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:30,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:30,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:30,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:30,917 INFO L124 PetriNetUnfolderBase]: 1612/2490 cut-off events. [2024-01-27 15:23:30,918 INFO L125 PetriNetUnfolderBase]: For 3465/3485 co-relation queries the response was YES. [2024-01-27 15:23:30,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7205 conditions, 2490 events. 1612/2490 cut-off events. For 3465/3485 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12827 event pairs, 537 based on Foata normal form. 1/2310 useless extension candidates. Maximal degree in co-relation 7189. Up to 1144 conditions per place. [2024-01-27 15:23:30,931 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 76 selfloop transitions, 9 changer transitions 12/101 dead transitions. [2024-01-27 15:23:30,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 101 transitions, 591 flow [2024-01-27 15:23:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-01-27 15:23:30,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2024-01-27 15:23:30,933 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 200 flow. Second operand 6 states and 125 transitions. [2024-01-27 15:23:30,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 101 transitions, 591 flow [2024-01-27 15:23:30,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 578 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:23:30,939 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 256 flow [2024-01-27 15:23:30,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2024-01-27 15:23:30,939 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2024-01-27 15:23:30,940 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 256 flow [2024-01-27 15:23:30,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:30,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:30,940 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:30,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:23:30,952 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:30,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:30,953 INFO L85 PathProgramCache]: Analyzing trace with hash 304965229, now seen corresponding path program 5 times [2024-01-27 15:23:30,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:30,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230198665] [2024-01-27 15:23:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:30,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:31,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:31,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230198665] [2024-01-27 15:23:31,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230198665] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:31,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:31,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:23:31,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229248788] [2024-01-27 15:23:31,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:31,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:23:31,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:31,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:23:31,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:23:31,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:31,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:31,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:31,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:31,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:31,728 INFO L124 PetriNetUnfolderBase]: 1600/2507 cut-off events. [2024-01-27 15:23:31,729 INFO L125 PetriNetUnfolderBase]: For 5588/5588 co-relation queries the response was YES. [2024-01-27 15:23:31,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7849 conditions, 2507 events. 1600/2507 cut-off events. For 5588/5588 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13165 event pairs, 595 based on Foata normal form. 1/2337 useless extension candidates. Maximal degree in co-relation 7830. Up to 1224 conditions per place. [2024-01-27 15:23:31,743 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 72 selfloop transitions, 14 changer transitions 12/102 dead transitions. [2024-01-27 15:23:31,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 639 flow [2024-01-27 15:23:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:31,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-01-27 15:23:31,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-01-27 15:23:31,745 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 256 flow. Second operand 6 states and 127 transitions. [2024-01-27 15:23:31,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 639 flow [2024-01-27 15:23:31,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 621 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-27 15:23:31,756 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 350 flow [2024-01-27 15:23:31,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-01-27 15:23:31,757 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2024-01-27 15:23:31,757 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 350 flow [2024-01-27 15:23:31,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:31,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:31,758 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:31,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:23:31,758 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:31,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:31,758 INFO L85 PathProgramCache]: Analyzing trace with hash -187342779, now seen corresponding path program 6 times [2024-01-27 15:23:31,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:31,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414840711] [2024-01-27 15:23:31,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:31,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:32,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414840711] [2024-01-27 15:23:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414840711] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:32,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:32,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:23:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396264683] [2024-01-27 15:23:32,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:32,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:23:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:23:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:23:32,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:32,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 350 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:32,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:32,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:32,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:32,447 INFO L124 PetriNetUnfolderBase]: 1586/2465 cut-off events. [2024-01-27 15:23:32,448 INFO L125 PetriNetUnfolderBase]: For 7639/7639 co-relation queries the response was YES. [2024-01-27 15:23:32,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8285 conditions, 2465 events. 1586/2465 cut-off events. For 7639/7639 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12884 event pairs, 567 based on Foata normal form. 1/2271 useless extension candidates. Maximal degree in co-relation 8263. Up to 1144 conditions per place. [2024-01-27 15:23:32,461 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 15 changer transitions 12/101 dead transitions. [2024-01-27 15:23:32,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 101 transitions, 687 flow [2024-01-27 15:23:32,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:32,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-01-27 15:23:32,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2024-01-27 15:23:32,462 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 350 flow. Second operand 6 states and 125 transitions. [2024-01-27 15:23:32,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 101 transitions, 687 flow [2024-01-27 15:23:32,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 101 transitions, 675 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-27 15:23:32,473 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 404 flow [2024-01-27 15:23:32,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-01-27 15:23:32,473 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2024-01-27 15:23:32,474 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 404 flow [2024-01-27 15:23:32,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:32,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:32,474 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:32,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:23:32,474 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:32,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:32,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1099173153, now seen corresponding path program 7 times [2024-01-27 15:23:32,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:32,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090737346] [2024-01-27 15:23:32,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:32,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:32,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:32,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090737346] [2024-01-27 15:23:32,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090737346] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:32,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:32,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:23:32,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646416891] [2024-01-27 15:23:32,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:32,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:23:32,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:23:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:23:32,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:32,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:32,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:32,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:32,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:33,143 INFO L124 PetriNetUnfolderBase]: 1572/2429 cut-off events. [2024-01-27 15:23:33,144 INFO L125 PetriNetUnfolderBase]: For 9407/9407 co-relation queries the response was YES. [2024-01-27 15:23:33,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8525 conditions, 2429 events. 1572/2429 cut-off events. For 9407/9407 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12595 event pairs, 605 based on Foata normal form. 1/2247 useless extension candidates. Maximal degree in co-relation 8500. Up to 1224 conditions per place. [2024-01-27 15:23:33,158 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 15 changer transitions 12/101 dead transitions. [2024-01-27 15:23:33,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 734 flow [2024-01-27 15:23:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-01-27 15:23:33,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-01-27 15:23:33,159 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 404 flow. Second operand 6 states and 123 transitions. [2024-01-27 15:23:33,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 734 flow [2024-01-27 15:23:33,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 101 transitions, 701 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-27 15:23:33,172 INFO L231 Difference]: Finished difference. Result has 77 places, 56 transitions, 439 flow [2024-01-27 15:23:33,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=77, PETRI_TRANSITIONS=56} [2024-01-27 15:23:33,173 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2024-01-27 15:23:33,173 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 56 transitions, 439 flow [2024-01-27 15:23:33,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:33,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:33,173 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:33,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:23:33,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:33,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:33,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1013396582, now seen corresponding path program 1 times [2024-01-27 15:23:33,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:33,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251818730] [2024-01-27 15:23:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:33,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:33,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:33,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251818730] [2024-01-27 15:23:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251818730] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 15:23:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769836184] [2024-01-27 15:23:33,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:33,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:23:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:23:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:23:33,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:33,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 56 transitions, 439 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:33,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:33,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:33,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:34,432 INFO L124 PetriNetUnfolderBase]: 4082/6311 cut-off events. [2024-01-27 15:23:34,433 INFO L125 PetriNetUnfolderBase]: For 25629/25629 co-relation queries the response was YES. [2024-01-27 15:23:34,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22017 conditions, 6311 events. 4082/6311 cut-off events. For 25629/25629 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 39389 event pairs, 1359 based on Foata normal form. 14/5892 useless extension candidates. Maximal degree in co-relation 21990. Up to 2384 conditions per place. [2024-01-27 15:23:34,467 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 162 selfloop transitions, 16 changer transitions 1/183 dead transitions. [2024-01-27 15:23:34,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 183 transitions, 1706 flow [2024-01-27 15:23:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:34,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-01-27 15:23:34,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6127819548872181 [2024-01-27 15:23:34,469 INFO L175 Difference]: Start difference. First operand has 77 places, 56 transitions, 439 flow. Second operand 7 states and 163 transitions. [2024-01-27 15:23:34,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 183 transitions, 1706 flow [2024-01-27 15:23:34,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 183 transitions, 1605 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-01-27 15:23:34,508 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 641 flow [2024-01-27 15:23:34,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=641, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-01-27 15:23:34,509 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 47 predicate places. [2024-01-27 15:23:34,510 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 641 flow [2024-01-27 15:23:34,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:34,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:34,510 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:34,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:23:34,510 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:34,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash 168613204, now seen corresponding path program 2 times [2024-01-27 15:23:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:34,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107403652] [2024-01-27 15:23:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:34,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:34,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107403652] [2024-01-27 15:23:34,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107403652] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:34,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:34,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:34,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614199863] [2024-01-27 15:23:34,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:34,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:34,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:34,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:34,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:34,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:34,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 641 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:34,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:34,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:34,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:35,704 INFO L124 PetriNetUnfolderBase]: 4295/6877 cut-off events. [2024-01-27 15:23:35,704 INFO L125 PetriNetUnfolderBase]: For 28503/28503 co-relation queries the response was YES. [2024-01-27 15:23:35,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24708 conditions, 6877 events. 4295/6877 cut-off events. For 28503/28503 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 46117 event pairs, 510 based on Foata normal form. 14/6887 useless extension candidates. Maximal degree in co-relation 24677. Up to 4050 conditions per place. [2024-01-27 15:23:35,739 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 160 selfloop transitions, 18 changer transitions 1/183 dead transitions. [2024-01-27 15:23:35,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 183 transitions, 1853 flow [2024-01-27 15:23:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-01-27 15:23:35,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451127819548872 [2024-01-27 15:23:35,741 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 641 flow. Second operand 7 states and 145 transitions. [2024-01-27 15:23:35,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 183 transitions, 1853 flow [2024-01-27 15:23:35,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 183 transitions, 1849 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-27 15:23:35,844 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 857 flow [2024-01-27 15:23:35,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=857, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2024-01-27 15:23:35,845 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 58 predicate places. [2024-01-27 15:23:35,845 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 857 flow [2024-01-27 15:23:35,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:35,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:35,846 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:35,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 15:23:35,846 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:35,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:35,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1528816646, now seen corresponding path program 3 times [2024-01-27 15:23:35,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:35,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965498310] [2024-01-27 15:23:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:35,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:36,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:36,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965498310] [2024-01-27 15:23:36,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965498310] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:36,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:36,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:36,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757003934] [2024-01-27 15:23:36,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:36,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:36,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:36,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:36,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:36,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 857 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:36,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:36,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:36,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:37,339 INFO L124 PetriNetUnfolderBase]: 4742/7464 cut-off events. [2024-01-27 15:23:37,339 INFO L125 PetriNetUnfolderBase]: For 42748/42788 co-relation queries the response was YES. [2024-01-27 15:23:37,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29604 conditions, 7464 events. 4742/7464 cut-off events. For 42748/42788 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 49509 event pairs, 1445 based on Foata normal form. 16/7436 useless extension candidates. Maximal degree in co-relation 29567. Up to 2384 conditions per place. [2024-01-27 15:23:37,388 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 192 selfloop transitions, 20 changer transitions 1/217 dead transitions. [2024-01-27 15:23:37,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 217 transitions, 2476 flow [2024-01-27 15:23:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-01-27 15:23:37,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-27 15:23:37,389 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 857 flow. Second operand 7 states and 154 transitions. [2024-01-27 15:23:37,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 217 transitions, 2476 flow [2024-01-27 15:23:37,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 217 transitions, 2445 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-01-27 15:23:37,462 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 1122 flow [2024-01-27 15:23:37,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1122, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-01-27 15:23:37,463 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 68 predicate places. [2024-01-27 15:23:37,463 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 1122 flow [2024-01-27 15:23:37,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:37,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:37,463 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:37,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 15:23:37,463 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:37,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:37,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1815508194, now seen corresponding path program 4 times [2024-01-27 15:23:37,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:37,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673989020] [2024-01-27 15:23:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:37,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:37,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673989020] [2024-01-27 15:23:37,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673989020] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:37,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:37,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:37,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111247129] [2024-01-27 15:23:37,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:37,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:37,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:37,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:37,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:37,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:37,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 1122 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:37,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:37,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:37,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:38,870 INFO L124 PetriNetUnfolderBase]: 5064/8043 cut-off events. [2024-01-27 15:23:38,870 INFO L125 PetriNetUnfolderBase]: For 52984/52984 co-relation queries the response was YES. [2024-01-27 15:23:38,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33702 conditions, 8043 events. 5064/8043 cut-off events. For 52984/52984 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 54436 event pairs, 1745 based on Foata normal form. 8/8021 useless extension candidates. Maximal degree in co-relation 33660. Up to 2402 conditions per place. [2024-01-27 15:23:38,911 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 171 selfloop transitions, 30 changer transitions 1/206 dead transitions. [2024-01-27 15:23:38,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 206 transitions, 2352 flow [2024-01-27 15:23:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-01-27 15:23:38,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-27 15:23:38,912 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 1122 flow. Second operand 7 states and 154 transitions. [2024-01-27 15:23:38,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 206 transitions, 2352 flow [2024-01-27 15:23:39,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 206 transitions, 2328 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-01-27 15:23:39,007 INFO L231 Difference]: Finished difference. Result has 114 places, 109 transitions, 1407 flow [2024-01-27 15:23:39,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1407, PETRI_PLACES=114, PETRI_TRANSITIONS=109} [2024-01-27 15:23:39,009 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 77 predicate places. [2024-01-27 15:23:39,009 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 109 transitions, 1407 flow [2024-01-27 15:23:39,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:39,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:39,009 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:39,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 15:23:39,009 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:39,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:39,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2005152694, now seen corresponding path program 5 times [2024-01-27 15:23:39,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:39,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320216346] [2024-01-27 15:23:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:39,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:39,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:39,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320216346] [2024-01-27 15:23:39,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320216346] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:39,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:39,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 15:23:39,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848481948] [2024-01-27 15:23:39,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:39,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:23:39,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:39,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:23:39,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:23:39,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:39,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 109 transitions, 1407 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:39,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:39,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:39,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:40,659 INFO L124 PetriNetUnfolderBase]: 5432/8678 cut-off events. [2024-01-27 15:23:40,660 INFO L125 PetriNetUnfolderBase]: For 70496/70496 co-relation queries the response was YES. [2024-01-27 15:23:40,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38046 conditions, 8678 events. 5432/8678 cut-off events. For 70496/70496 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 59632 event pairs, 1641 based on Foata normal form. 14/8646 useless extension candidates. Maximal degree in co-relation 38000. Up to 2402 conditions per place. [2024-01-27 15:23:40,760 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 208 selfloop transitions, 30 changer transitions 1/243 dead transitions. [2024-01-27 15:23:40,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 243 transitions, 3116 flow [2024-01-27 15:23:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-01-27 15:23:40,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2024-01-27 15:23:40,762 INFO L175 Difference]: Start difference. First operand has 114 places, 109 transitions, 1407 flow. Second operand 7 states and 160 transitions. [2024-01-27 15:23:40,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 243 transitions, 3116 flow [2024-01-27 15:23:40,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 243 transitions, 3028 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-01-27 15:23:40,952 INFO L231 Difference]: Finished difference. Result has 122 places, 121 transitions, 1693 flow [2024-01-27 15:23:40,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1693, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2024-01-27 15:23:40,953 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 85 predicate places. [2024-01-27 15:23:40,953 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 1693 flow [2024-01-27 15:23:40,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:40,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:40,954 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 15:23:40,954 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:40,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash -400789260, now seen corresponding path program 6 times [2024-01-27 15:23:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:40,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580288895] [2024-01-27 15:23:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:41,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:41,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580288895] [2024-01-27 15:23:41,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580288895] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:41,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:41,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:41,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318854177] [2024-01-27 15:23:41,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:41,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:41,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:41,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:41,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 1693 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:41,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:41,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:41,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:42,603 INFO L124 PetriNetUnfolderBase]: 5637/9084 cut-off events. [2024-01-27 15:23:42,603 INFO L125 PetriNetUnfolderBase]: For 75158/75158 co-relation queries the response was YES. [2024-01-27 15:23:42,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40189 conditions, 9084 events. 5637/9084 cut-off events. For 75158/75158 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 64242 event pairs, 1503 based on Foata normal form. 28/9056 useless extension candidates. Maximal degree in co-relation 40139. Up to 2420 conditions per place. [2024-01-27 15:23:42,676 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 174 selfloop transitions, 49 changer transitions 1/228 dead transitions. [2024-01-27 15:23:42,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 228 transitions, 2923 flow [2024-01-27 15:23:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-01-27 15:23:42,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6127819548872181 [2024-01-27 15:23:42,678 INFO L175 Difference]: Start difference. First operand has 122 places, 121 transitions, 1693 flow. Second operand 7 states and 163 transitions. [2024-01-27 15:23:42,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 228 transitions, 2923 flow [2024-01-27 15:23:42,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 228 transitions, 2863 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-01-27 15:23:42,872 INFO L231 Difference]: Finished difference. Result has 128 places, 127 transitions, 1868 flow [2024-01-27 15:23:42,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1868, PETRI_PLACES=128, PETRI_TRANSITIONS=127} [2024-01-27 15:23:42,872 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 91 predicate places. [2024-01-27 15:23:42,873 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 127 transitions, 1868 flow [2024-01-27 15:23:42,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:42,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:42,873 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:42,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-27 15:23:42,873 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:42,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1355684930, now seen corresponding path program 7 times [2024-01-27 15:23:42,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:42,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157897908] [2024-01-27 15:23:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:43,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:43,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157897908] [2024-01-27 15:23:43,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157897908] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:43,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:43,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:43,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44121188] [2024-01-27 15:23:43,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:43,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:43,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:43,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:43,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:43,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:43,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 127 transitions, 1868 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:43,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:43,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:43,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:44,508 INFO L124 PetriNetUnfolderBase]: 5626/9005 cut-off events. [2024-01-27 15:23:44,509 INFO L125 PetriNetUnfolderBase]: For 77174/77174 co-relation queries the response was YES. [2024-01-27 15:23:44,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40179 conditions, 9005 events. 5626/9005 cut-off events. For 77174/77174 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 62588 event pairs, 1683 based on Foata normal form. 6/8971 useless extension candidates. Maximal degree in co-relation 40127. Up to 2420 conditions per place. [2024-01-27 15:23:44,583 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 167 selfloop transitions, 48 changer transitions 1/220 dead transitions. [2024-01-27 15:23:44,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 220 transitions, 2925 flow [2024-01-27 15:23:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-01-27 15:23:44,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902255639097744 [2024-01-27 15:23:44,585 INFO L175 Difference]: Start difference. First operand has 128 places, 127 transitions, 1868 flow. Second operand 7 states and 157 transitions. [2024-01-27 15:23:44,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 220 transitions, 2925 flow [2024-01-27 15:23:44,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 220 transitions, 2866 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-01-27 15:23:44,741 INFO L231 Difference]: Finished difference. Result has 132 places, 127 transitions, 1920 flow [2024-01-27 15:23:44,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1920, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2024-01-27 15:23:44,741 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 95 predicate places. [2024-01-27 15:23:44,741 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 1920 flow [2024-01-27 15:23:44,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:44,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:44,742 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:44,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-27 15:23:44,742 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:44,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:44,743 INFO L85 PathProgramCache]: Analyzing trace with hash 876904836, now seen corresponding path program 8 times [2024-01-27 15:23:44,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:44,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018295852] [2024-01-27 15:23:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:44,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:44,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:44,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018295852] [2024-01-27 15:23:44,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018295852] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:44,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:44,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:44,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647129214] [2024-01-27 15:23:44,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:44,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:44,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:44,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:44,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:44,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 1920 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:44,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:44,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:44,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:46,290 INFO L124 PetriNetUnfolderBase]: 5757/9193 cut-off events. [2024-01-27 15:23:46,290 INFO L125 PetriNetUnfolderBase]: For 82262/82262 co-relation queries the response was YES. [2024-01-27 15:23:46,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41719 conditions, 9193 events. 5757/9193 cut-off events. For 82262/82262 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 64051 event pairs, 1825 based on Foata normal form. 8/9155 useless extension candidates. Maximal degree in co-relation 41666. Up to 2420 conditions per place. [2024-01-27 15:23:46,361 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 208 selfloop transitions, 35 changer transitions 1/248 dead transitions. [2024-01-27 15:23:46,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 248 transitions, 3463 flow [2024-01-27 15:23:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-01-27 15:23:46,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-27 15:23:46,363 INFO L175 Difference]: Start difference. First operand has 132 places, 127 transitions, 1920 flow. Second operand 7 states and 154 transitions. [2024-01-27 15:23:46,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 248 transitions, 3463 flow [2024-01-27 15:23:46,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 248 transitions, 3368 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-27 15:23:46,541 INFO L231 Difference]: Finished difference. Result has 137 places, 134 transitions, 2093 flow [2024-01-27 15:23:46,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2093, PETRI_PLACES=137, PETRI_TRANSITIONS=134} [2024-01-27 15:23:46,541 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 100 predicate places. [2024-01-27 15:23:46,541 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 134 transitions, 2093 flow [2024-01-27 15:23:46,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:46,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:46,542 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:46,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-27 15:23:46,542 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:46,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1565064802, now seen corresponding path program 9 times [2024-01-27 15:23:46,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:46,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811926074] [2024-01-27 15:23:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:46,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811926074] [2024-01-27 15:23:46,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811926074] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:46,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:46,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:46,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900322415] [2024-01-27 15:23:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:46,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:46,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:46,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:46,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:46,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 134 transitions, 2093 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:46,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:46,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:46,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:48,346 INFO L124 PetriNetUnfolderBase]: 6033/9749 cut-off events. [2024-01-27 15:23:48,346 INFO L125 PetriNetUnfolderBase]: For 94747/94747 co-relation queries the response was YES. [2024-01-27 15:23:48,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44628 conditions, 9749 events. 6033/9749 cut-off events. For 94747/94747 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 70299 event pairs, 1447 based on Foata normal form. 28/9709 useless extension candidates. Maximal degree in co-relation 44572. Up to 2614 conditions per place. [2024-01-27 15:23:48,435 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 179 selfloop transitions, 62 changer transitions 1/246 dead transitions. [2024-01-27 15:23:48,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 246 transitions, 3544 flow [2024-01-27 15:23:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-01-27 15:23:48,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2024-01-27 15:23:48,436 INFO L175 Difference]: Start difference. First operand has 137 places, 134 transitions, 2093 flow. Second operand 7 states and 160 transitions. [2024-01-27 15:23:48,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 246 transitions, 3544 flow [2024-01-27 15:23:48,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 246 transitions, 3491 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-27 15:23:48,649 INFO L231 Difference]: Finished difference. Result has 143 places, 148 transitions, 2526 flow [2024-01-27 15:23:48,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2047, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2526, PETRI_PLACES=143, PETRI_TRANSITIONS=148} [2024-01-27 15:23:48,650 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 106 predicate places. [2024-01-27 15:23:48,650 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 148 transitions, 2526 flow [2024-01-27 15:23:48,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:48,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:48,650 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:48,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-27 15:23:48,651 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:48,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:48,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1528319218, now seen corresponding path program 10 times [2024-01-27 15:23:48,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:48,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892259065] [2024-01-27 15:23:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:48,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:48,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:48,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892259065] [2024-01-27 15:23:48,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892259065] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:48,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:48,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:48,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231216876] [2024-01-27 15:23:48,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:48,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:48,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:48,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:48,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:48,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 148 transitions, 2526 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:48,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:48,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:48,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:50,310 INFO L124 PetriNetUnfolderBase]: 6014/9600 cut-off events. [2024-01-27 15:23:50,310 INFO L125 PetriNetUnfolderBase]: For 101926/101926 co-relation queries the response was YES. [2024-01-27 15:23:50,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45915 conditions, 9600 events. 6014/9600 cut-off events. For 101926/101926 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 67375 event pairs, 1819 based on Foata normal form. 14/9574 useless extension candidates. Maximal degree in co-relation 45856. Up to 2438 conditions per place. [2024-01-27 15:23:50,385 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 210 selfloop transitions, 44 changer transitions 2/260 dead transitions. [2024-01-27 15:23:50,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 260 transitions, 3964 flow [2024-01-27 15:23:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-01-27 15:23:50,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-27 15:23:50,388 INFO L175 Difference]: Start difference. First operand has 143 places, 148 transitions, 2526 flow. Second operand 7 states and 154 transitions. [2024-01-27 15:23:50,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 260 transitions, 3964 flow [2024-01-27 15:23:50,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 260 transitions, 3865 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-01-27 15:23:50,627 INFO L231 Difference]: Finished difference. Result has 145 places, 150 transitions, 2573 flow [2024-01-27 15:23:50,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2573, PETRI_PLACES=145, PETRI_TRANSITIONS=150} [2024-01-27 15:23:50,628 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 108 predicate places. [2024-01-27 15:23:50,628 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 150 transitions, 2573 flow [2024-01-27 15:23:50,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:50,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:50,629 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:50,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-27 15:23:50,629 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:50,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:50,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1197162162, now seen corresponding path program 11 times [2024-01-27 15:23:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:50,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35457036] [2024-01-27 15:23:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:50,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:50,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:50,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35457036] [2024-01-27 15:23:50,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35457036] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:50,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:50,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:50,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10562932] [2024-01-27 15:23:50,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:50,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:50,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:50,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:50,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:50,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:50,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 150 transitions, 2573 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:50,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:50,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:50,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:52,613 INFO L124 PetriNetUnfolderBase]: 6068/9829 cut-off events. [2024-01-27 15:23:52,613 INFO L125 PetriNetUnfolderBase]: For 101789/101789 co-relation queries the response was YES. [2024-01-27 15:23:52,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45972 conditions, 9829 events. 6068/9829 cut-off events. For 101789/101789 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 71141 event pairs, 1469 based on Foata normal form. 6/9767 useless extension candidates. Maximal degree in co-relation 45913. Up to 2614 conditions per place. [2024-01-27 15:23:52,690 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 179 selfloop transitions, 66 changer transitions 1/250 dead transitions. [2024-01-27 15:23:52,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 250 transitions, 3779 flow [2024-01-27 15:23:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:52,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-01-27 15:23:52,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2024-01-27 15:23:52,691 INFO L175 Difference]: Start difference. First operand has 145 places, 150 transitions, 2573 flow. Second operand 7 states and 160 transitions. [2024-01-27 15:23:52,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 250 transitions, 3779 flow [2024-01-27 15:23:52,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 250 transitions, 3714 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-27 15:23:52,919 INFO L231 Difference]: Finished difference. Result has 149 places, 153 transitions, 2731 flow [2024-01-27 15:23:52,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2731, PETRI_PLACES=149, PETRI_TRANSITIONS=153} [2024-01-27 15:23:52,919 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 112 predicate places. [2024-01-27 15:23:52,920 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 153 transitions, 2731 flow [2024-01-27 15:23:52,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:52,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:52,920 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:52,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-27 15:23:52,920 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:52,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:52,921 INFO L85 PathProgramCache]: Analyzing trace with hash 730359222, now seen corresponding path program 12 times [2024-01-27 15:23:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:52,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186761403] [2024-01-27 15:23:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:52,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:53,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186761403] [2024-01-27 15:23:53,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186761403] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:53,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:53,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:53,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866165126] [2024-01-27 15:23:53,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:53,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:53,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:53,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:53,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 153 transitions, 2731 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:53,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:53,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:53,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:54,659 INFO L124 PetriNetUnfolderBase]: 6051/9692 cut-off events. [2024-01-27 15:23:54,659 INFO L125 PetriNetUnfolderBase]: For 107605/107605 co-relation queries the response was YES. [2024-01-27 15:23:54,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46350 conditions, 9692 events. 6051/9692 cut-off events. For 107605/107605 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 68468 event pairs, 1945 based on Foata normal form. 8/9660 useless extension candidates. Maximal degree in co-relation 46289. Up to 2614 conditions per place. [2024-01-27 15:23:54,736 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 188 selfloop transitions, 63 changer transitions 1/256 dead transitions. [2024-01-27 15:23:54,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 256 transitions, 4036 flow [2024-01-27 15:23:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-01-27 15:23:54,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864661654135338 [2024-01-27 15:23:54,737 INFO L175 Difference]: Start difference. First operand has 149 places, 153 transitions, 2731 flow. Second operand 7 states and 156 transitions. [2024-01-27 15:23:54,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 256 transitions, 4036 flow [2024-01-27 15:23:54,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 256 transitions, 3917 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-27 15:23:54,961 INFO L231 Difference]: Finished difference. Result has 154 places, 158 transitions, 2930 flow [2024-01-27 15:23:54,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2930, PETRI_PLACES=154, PETRI_TRANSITIONS=158} [2024-01-27 15:23:54,961 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 117 predicate places. [2024-01-27 15:23:54,962 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 158 transitions, 2930 flow [2024-01-27 15:23:54,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:54,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:54,962 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:54,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-27 15:23:54,962 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:54,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1256430680, now seen corresponding path program 13 times [2024-01-27 15:23:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:54,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755753260] [2024-01-27 15:23:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:54,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:55,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:55,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755753260] [2024-01-27 15:23:55,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755753260] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:55,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:55,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:55,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223252606] [2024-01-27 15:23:55,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:55,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:55,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:55,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:55,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:55,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:55,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 158 transitions, 2930 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:55,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:55,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:55,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:56,861 INFO L124 PetriNetUnfolderBase]: 6075/9834 cut-off events. [2024-01-27 15:23:56,861 INFO L125 PetriNetUnfolderBase]: For 114032/114032 co-relation queries the response was YES. [2024-01-27 15:23:56,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47505 conditions, 9834 events. 6075/9834 cut-off events. For 114032/114032 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 71104 event pairs, 1673 based on Foata normal form. 6/9784 useless extension candidates. Maximal degree in co-relation 47441. Up to 2614 conditions per place. [2024-01-27 15:23:56,933 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 182 selfloop transitions, 68 changer transitions 2/256 dead transitions. [2024-01-27 15:23:56,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 256 transitions, 4116 flow [2024-01-27 15:23:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:56,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-01-27 15:23:56,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864661654135338 [2024-01-27 15:23:56,935 INFO L175 Difference]: Start difference. First operand has 154 places, 158 transitions, 2930 flow. Second operand 7 states and 156 transitions. [2024-01-27 15:23:56,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 256 transitions, 4116 flow [2024-01-27 15:23:57,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 256 transitions, 4008 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-01-27 15:23:57,175 INFO L231 Difference]: Finished difference. Result has 155 places, 161 transitions, 3012 flow [2024-01-27 15:23:57,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3012, PETRI_PLACES=155, PETRI_TRANSITIONS=161} [2024-01-27 15:23:57,176 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 118 predicate places. [2024-01-27 15:23:57,176 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 161 transitions, 3012 flow [2024-01-27 15:23:57,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:57,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:57,176 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:57,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-27 15:23:57,177 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:57,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:57,177 INFO L85 PathProgramCache]: Analyzing trace with hash -564182836, now seen corresponding path program 14 times [2024-01-27 15:23:57,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:57,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83021902] [2024-01-27 15:23:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:57,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:57,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:57,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83021902] [2024-01-27 15:23:57,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83021902] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:57,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:57,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:57,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451672152] [2024-01-27 15:23:57,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:57,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:57,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:57,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:57,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:57,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:57,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 161 transitions, 3012 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:57,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:57,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:57,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:58,972 INFO L124 PetriNetUnfolderBase]: 6056/9815 cut-off events. [2024-01-27 15:23:58,972 INFO L125 PetriNetUnfolderBase]: For 119307/119307 co-relation queries the response was YES. [2024-01-27 15:23:59,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47720 conditions, 9815 events. 6056/9815 cut-off events. For 119307/119307 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 71125 event pairs, 1493 based on Foata normal form. 14/9761 useless extension candidates. Maximal degree in co-relation 47657. Up to 2614 conditions per place. [2024-01-27 15:23:59,039 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 182 selfloop transitions, 68 changer transitions 2/256 dead transitions. [2024-01-27 15:23:59,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 256 transitions, 4201 flow [2024-01-27 15:23:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:23:59,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:23:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-01-27 15:23:59,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-27 15:23:59,041 INFO L175 Difference]: Start difference. First operand has 155 places, 161 transitions, 3012 flow. Second operand 7 states and 154 transitions. [2024-01-27 15:23:59,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 256 transitions, 4201 flow [2024-01-27 15:23:59,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 256 transitions, 4043 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-01-27 15:23:59,290 INFO L231 Difference]: Finished difference. Result has 154 places, 163 transitions, 3048 flow [2024-01-27 15:23:59,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2844, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3048, PETRI_PLACES=154, PETRI_TRANSITIONS=163} [2024-01-27 15:23:59,291 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 117 predicate places. [2024-01-27 15:23:59,291 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 163 transitions, 3048 flow [2024-01-27 15:23:59,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:59,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:59,291 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:59,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-27 15:23:59,291 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:59,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:59,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1195431360, now seen corresponding path program 1 times [2024-01-27 15:23:59,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:59,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21297122] [2024-01-27 15:23:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:59,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:23:59,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:59,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21297122] [2024-01-27 15:23:59,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21297122] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:59,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:59,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:23:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838368304] [2024-01-27 15:23:59,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:59,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:23:59,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:59,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:23:59,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:23:59,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:23:59,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 163 transitions, 3048 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:59,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:59,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:23:59,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:01,284 INFO L124 PetriNetUnfolderBase]: 7154/11734 cut-off events. [2024-01-27 15:24:01,284 INFO L125 PetriNetUnfolderBase]: For 125565/125565 co-relation queries the response was YES. [2024-01-27 15:24:01,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54156 conditions, 11734 events. 7154/11734 cut-off events. For 125565/125565 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 87736 event pairs, 1427 based on Foata normal form. 12/11722 useless extension candidates. Maximal degree in co-relation 54094. Up to 5006 conditions per place. [2024-01-27 15:24:01,365 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 212 selfloop transitions, 60 changer transitions 1/277 dead transitions. [2024-01-27 15:24:01,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 277 transitions, 4602 flow [2024-01-27 15:24:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-01-27 15:24:01,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575187969924812 [2024-01-27 15:24:01,366 INFO L175 Difference]: Start difference. First operand has 154 places, 163 transitions, 3048 flow. Second operand 7 states and 153 transitions. [2024-01-27 15:24:01,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 277 transitions, 4602 flow [2024-01-27 15:24:01,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 277 transitions, 4428 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-27 15:24:01,665 INFO L231 Difference]: Finished difference. Result has 159 places, 175 transitions, 3313 flow [2024-01-27 15:24:01,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3313, PETRI_PLACES=159, PETRI_TRANSITIONS=175} [2024-01-27 15:24:01,665 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 122 predicate places. [2024-01-27 15:24:01,666 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 175 transitions, 3313 flow [2024-01-27 15:24:01,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:01,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:01,666 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:01,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-27 15:24:01,666 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:01,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:01,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1987122940, now seen corresponding path program 2 times [2024-01-27 15:24:01,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980699155] [2024-01-27 15:24:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:01,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:01,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980699155] [2024-01-27 15:24:01,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980699155] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:01,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:01,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:01,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948148350] [2024-01-27 15:24:01,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:01,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:01,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:01,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:01,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:01,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:01,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 175 transitions, 3313 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:01,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:01,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:01,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:03,783 INFO L124 PetriNetUnfolderBase]: 7198/11670 cut-off events. [2024-01-27 15:24:03,783 INFO L125 PetriNetUnfolderBase]: For 141303/141327 co-relation queries the response was YES. [2024-01-27 15:24:03,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55265 conditions, 11670 events. 7198/11670 cut-off events. For 141303/141327 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 86585 event pairs, 2529 based on Foata normal form. 6/11626 useless extension candidates. Maximal degree in co-relation 55199. Up to 6720 conditions per place. [2024-01-27 15:24:03,876 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 195 selfloop transitions, 62 changer transitions 9/270 dead transitions. [2024-01-27 15:24:03,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 270 transitions, 4618 flow [2024-01-27 15:24:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-01-27 15:24:03,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601503759398496 [2024-01-27 15:24:03,877 INFO L175 Difference]: Start difference. First operand has 159 places, 175 transitions, 3313 flow. Second operand 7 states and 149 transitions. [2024-01-27 15:24:03,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 270 transitions, 4618 flow [2024-01-27 15:24:04,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 270 transitions, 4509 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-01-27 15:24:04,196 INFO L231 Difference]: Finished difference. Result has 167 places, 184 transitions, 3562 flow [2024-01-27 15:24:04,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3228, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3562, PETRI_PLACES=167, PETRI_TRANSITIONS=184} [2024-01-27 15:24:04,197 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 130 predicate places. [2024-01-27 15:24:04,197 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 184 transitions, 3562 flow [2024-01-27 15:24:04,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:04,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:04,197 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:04,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-27 15:24:04,197 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:04,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash 454516782, now seen corresponding path program 3 times [2024-01-27 15:24:04,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:04,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15911980] [2024-01-27 15:24:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:04,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:04,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:04,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15911980] [2024-01-27 15:24:04,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15911980] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:04,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:04,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:04,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404849700] [2024-01-27 15:24:04,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:04,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:04,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:04,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:04,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:04,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:04,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 184 transitions, 3562 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:04,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:04,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:04,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:07,545 INFO L124 PetriNetUnfolderBase]: 11002/18146 cut-off events. [2024-01-27 15:24:07,545 INFO L125 PetriNetUnfolderBase]: For 194655/194655 co-relation queries the response was YES. [2024-01-27 15:24:07,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83975 conditions, 18146 events. 11002/18146 cut-off events. For 194655/194655 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 145170 event pairs, 1788 based on Foata normal form. 12/18126 useless extension candidates. Maximal degree in co-relation 83905. Up to 8205 conditions per place. [2024-01-27 15:24:07,718 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 298 selfloop transitions, 62 changer transitions 2/366 dead transitions. [2024-01-27 15:24:07,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 366 transitions, 6829 flow [2024-01-27 15:24:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-01-27 15:24:07,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-27 15:24:07,719 INFO L175 Difference]: Start difference. First operand has 167 places, 184 transitions, 3562 flow. Second operand 7 states and 152 transitions. [2024-01-27 15:24:07,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 366 transitions, 6829 flow [2024-01-27 15:24:08,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 366 transitions, 6571 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-01-27 15:24:08,355 INFO L231 Difference]: Finished difference. Result has 173 places, 228 transitions, 4506 flow [2024-01-27 15:24:08,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3440, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4506, PETRI_PLACES=173, PETRI_TRANSITIONS=228} [2024-01-27 15:24:08,356 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 136 predicate places. [2024-01-27 15:24:08,356 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 228 transitions, 4506 flow [2024-01-27 15:24:08,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:08,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:08,356 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:08,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-27 15:24:08,357 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:08,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:08,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1430244230, now seen corresponding path program 4 times [2024-01-27 15:24:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:08,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32743595] [2024-01-27 15:24:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:08,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32743595] [2024-01-27 15:24:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32743595] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:08,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347734258] [2024-01-27 15:24:08,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:08,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:08,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:08,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:08,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:08,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 228 transitions, 4506 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:08,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:08,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:08,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:11,331 INFO L124 PetriNetUnfolderBase]: 10996/17797 cut-off events. [2024-01-27 15:24:11,331 INFO L125 PetriNetUnfolderBase]: For 215110/215118 co-relation queries the response was YES. [2024-01-27 15:24:11,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86406 conditions, 17797 events. 10996/17797 cut-off events. For 215110/215118 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 139390 event pairs, 3843 based on Foata normal form. 10/17781 useless extension candidates. Maximal degree in co-relation 86332. Up to 10583 conditions per place. [2024-01-27 15:24:11,538 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 212 selfloop transitions, 102 changer transitions 9/327 dead transitions. [2024-01-27 15:24:11,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 327 transitions, 5905 flow [2024-01-27 15:24:11,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-01-27 15:24:11,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575187969924812 [2024-01-27 15:24:11,540 INFO L175 Difference]: Start difference. First operand has 173 places, 228 transitions, 4506 flow. Second operand 7 states and 153 transitions. [2024-01-27 15:24:11,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 327 transitions, 5905 flow [2024-01-27 15:24:12,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 327 transitions, 5879 flow, removed 13 selfloop flow, removed 0 redundant places. [2024-01-27 15:24:12,435 INFO L231 Difference]: Finished difference. Result has 180 places, 229 transitions, 4699 flow [2024-01-27 15:24:12,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4699, PETRI_PLACES=180, PETRI_TRANSITIONS=229} [2024-01-27 15:24:12,436 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 143 predicate places. [2024-01-27 15:24:12,436 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 229 transitions, 4699 flow [2024-01-27 15:24:12,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:12,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:12,436 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:12,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-27 15:24:12,436 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:12,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash -268211430, now seen corresponding path program 5 times [2024-01-27 15:24:12,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:12,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987751554] [2024-01-27 15:24:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:12,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:12,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:12,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987751554] [2024-01-27 15:24:12,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987751554] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:12,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:12,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:12,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555926931] [2024-01-27 15:24:12,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:12,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:12,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:12,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:12,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:12,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:12,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 229 transitions, 4699 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:12,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:12,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:12,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:15,814 INFO L124 PetriNetUnfolderBase]: 11220/18320 cut-off events. [2024-01-27 15:24:15,815 INFO L125 PetriNetUnfolderBase]: For 234854/234854 co-relation queries the response was YES. [2024-01-27 15:24:15,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90297 conditions, 18320 events. 11220/18320 cut-off events. For 234854/234854 co-relation queries the response was YES. Maximal size of possible extension queue 1105. Compared 145464 event pairs, 3645 based on Foata normal form. 12/18306 useless extension candidates. Maximal degree in co-relation 90221. Up to 8115 conditions per place. [2024-01-27 15:24:15,977 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 262 selfloop transitions, 113 changer transitions 1/380 dead transitions. [2024-01-27 15:24:15,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 380 transitions, 7386 flow [2024-01-27 15:24:15,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:15,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-01-27 15:24:15,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-01-27 15:24:15,978 INFO L175 Difference]: Start difference. First operand has 180 places, 229 transitions, 4699 flow. Second operand 7 states and 161 transitions. [2024-01-27 15:24:15,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 380 transitions, 7386 flow [2024-01-27 15:24:16,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 380 transitions, 7179 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-01-27 15:24:16,716 INFO L231 Difference]: Finished difference. Result has 187 places, 255 transitions, 5512 flow [2024-01-27 15:24:16,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4552, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5512, PETRI_PLACES=187, PETRI_TRANSITIONS=255} [2024-01-27 15:24:16,716 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 150 predicate places. [2024-01-27 15:24:16,716 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 255 transitions, 5512 flow [2024-01-27 15:24:16,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:16,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:16,717 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:16,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-27 15:24:16,717 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:16,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:16,718 INFO L85 PathProgramCache]: Analyzing trace with hash -391624102, now seen corresponding path program 6 times [2024-01-27 15:24:16,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:16,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879334422] [2024-01-27 15:24:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:16,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:16,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:16,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879334422] [2024-01-27 15:24:16,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879334422] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:16,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:16,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:16,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444013193] [2024-01-27 15:24:16,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:16,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:16,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:16,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:16,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:16,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:16,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 255 transitions, 5512 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:16,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:16,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:16,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:20,436 INFO L124 PetriNetUnfolderBase]: 11277/18244 cut-off events. [2024-01-27 15:24:20,437 INFO L125 PetriNetUnfolderBase]: For 257543/257543 co-relation queries the response was YES. [2024-01-27 15:24:20,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92520 conditions, 18244 events. 11277/18244 cut-off events. For 257543/257543 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 143352 event pairs, 3901 based on Foata normal form. 12/18188 useless extension candidates. Maximal degree in co-relation 92440. Up to 10631 conditions per place. [2024-01-27 15:24:20,665 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 216 selfloop transitions, 120 changer transitions 2/342 dead transitions. [2024-01-27 15:24:20,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 342 transitions, 6750 flow [2024-01-27 15:24:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-01-27 15:24:20,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864661654135338 [2024-01-27 15:24:20,666 INFO L175 Difference]: Start difference. First operand has 187 places, 255 transitions, 5512 flow. Second operand 7 states and 156 transitions. [2024-01-27 15:24:20,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 342 transitions, 6750 flow [2024-01-27 15:24:21,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 342 transitions, 6578 flow, removed 56 selfloop flow, removed 1 redundant places. [2024-01-27 15:24:21,512 INFO L231 Difference]: Finished difference. Result has 193 places, 256 transitions, 5618 flow [2024-01-27 15:24:21,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5344, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5618, PETRI_PLACES=193, PETRI_TRANSITIONS=256} [2024-01-27 15:24:21,513 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 156 predicate places. [2024-01-27 15:24:21,513 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 256 transitions, 5618 flow [2024-01-27 15:24:21,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:21,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:21,514 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:21,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-27 15:24:21,514 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:21,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1427056242, now seen corresponding path program 7 times [2024-01-27 15:24:21,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:21,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296195961] [2024-01-27 15:24:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:21,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:21,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:21,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296195961] [2024-01-27 15:24:21,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296195961] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:21,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:21,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:21,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912049751] [2024-01-27 15:24:21,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:21,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:21,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:21,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:21,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 256 transitions, 5618 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:21,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:21,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:21,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:24,847 INFO L124 PetriNetUnfolderBase]: 11595/18714 cut-off events. [2024-01-27 15:24:24,848 INFO L125 PetriNetUnfolderBase]: For 274698/274704 co-relation queries the response was YES. [2024-01-27 15:24:25,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95349 conditions, 18714 events. 11595/18714 cut-off events. For 274698/274704 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 146574 event pairs, 4699 based on Foata normal form. 14/18672 useless extension candidates. Maximal degree in co-relation 95268. Up to 10679 conditions per place. [2024-01-27 15:24:25,147 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 216 selfloop transitions, 124 changer transitions 1/345 dead transitions. [2024-01-27 15:24:25,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 345 transitions, 6995 flow [2024-01-27 15:24:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-01-27 15:24:25,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2024-01-27 15:24:25,148 INFO L175 Difference]: Start difference. First operand has 193 places, 256 transitions, 5618 flow. Second operand 7 states and 160 transitions. [2024-01-27 15:24:25,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 345 transitions, 6995 flow [2024-01-27 15:24:26,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 345 transitions, 6762 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-01-27 15:24:26,105 INFO L231 Difference]: Finished difference. Result has 198 places, 264 transitions, 5877 flow [2024-01-27 15:24:26,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5397, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5877, PETRI_PLACES=198, PETRI_TRANSITIONS=264} [2024-01-27 15:24:26,105 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 161 predicate places. [2024-01-27 15:24:26,106 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 264 transitions, 5877 flow [2024-01-27 15:24:26,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:26,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:26,106 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:26,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-27 15:24:26,106 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:26,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:26,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1333890422, now seen corresponding path program 8 times [2024-01-27 15:24:26,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:26,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185966719] [2024-01-27 15:24:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:26,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:26,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:26,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185966719] [2024-01-27 15:24:26,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185966719] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:26,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:26,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:26,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254921648] [2024-01-27 15:24:26,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:26,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:26,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:26,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:26,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 264 transitions, 5877 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:26,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:26,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:26,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:29,486 INFO L124 PetriNetUnfolderBase]: 11574/18746 cut-off events. [2024-01-27 15:24:29,487 INFO L125 PetriNetUnfolderBase]: For 275952/275952 co-relation queries the response was YES. [2024-01-27 15:24:29,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95504 conditions, 18746 events. 11574/18746 cut-off events. For 275952/275952 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 148239 event pairs, 4001 based on Foata normal form. 6/18684 useless extension candidates. Maximal degree in co-relation 95421. Up to 10679 conditions per place. [2024-01-27 15:24:29,825 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 206 selfloop transitions, 126 changer transitions 8/344 dead transitions. [2024-01-27 15:24:29,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 344 transitions, 7036 flow [2024-01-27 15:24:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:29,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-01-27 15:24:29,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601503759398496 [2024-01-27 15:24:29,826 INFO L175 Difference]: Start difference. First operand has 198 places, 264 transitions, 5877 flow. Second operand 7 states and 149 transitions. [2024-01-27 15:24:29,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 344 transitions, 7036 flow [2024-01-27 15:24:30,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 344 transitions, 6838 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-01-27 15:24:30,908 INFO L231 Difference]: Finished difference. Result has 203 places, 263 transitions, 5898 flow [2024-01-27 15:24:30,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5641, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5898, PETRI_PLACES=203, PETRI_TRANSITIONS=263} [2024-01-27 15:24:30,909 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 166 predicate places. [2024-01-27 15:24:30,909 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 263 transitions, 5898 flow [2024-01-27 15:24:30,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:30,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:30,910 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:30,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-27 15:24:30,910 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:30,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:30,910 INFO L85 PathProgramCache]: Analyzing trace with hash 524592778, now seen corresponding path program 9 times [2024-01-27 15:24:30,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:30,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003522894] [2024-01-27 15:24:30,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:30,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:31,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:31,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003522894] [2024-01-27 15:24:31,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003522894] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:31,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:31,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:31,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252418778] [2024-01-27 15:24:31,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:31,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:31,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:31,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:31,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:31,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 263 transitions, 5898 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:31,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:31,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:31,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:34,331 INFO L124 PetriNetUnfolderBase]: 11610/18847 cut-off events. [2024-01-27 15:24:34,332 INFO L125 PetriNetUnfolderBase]: For 283202/283202 co-relation queries the response was YES. [2024-01-27 15:24:34,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95872 conditions, 18847 events. 11610/18847 cut-off events. For 283202/283202 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 149498 event pairs, 4217 based on Foata normal form. 6/18797 useless extension candidates. Maximal degree in co-relation 95788. Up to 10679 conditions per place. [2024-01-27 15:24:34,660 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 216 selfloop transitions, 124 changer transitions 1/345 dead transitions. [2024-01-27 15:24:34,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 345 transitions, 7078 flow [2024-01-27 15:24:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-01-27 15:24:34,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2024-01-27 15:24:34,662 INFO L175 Difference]: Start difference. First operand has 203 places, 263 transitions, 5898 flow. Second operand 7 states and 160 transitions. [2024-01-27 15:24:34,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 345 transitions, 7078 flow [2024-01-27 15:24:35,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 345 transitions, 6822 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-27 15:24:35,923 INFO L231 Difference]: Finished difference. Result has 205 places, 266 transitions, 5984 flow [2024-01-27 15:24:35,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5644, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5984, PETRI_PLACES=205, PETRI_TRANSITIONS=266} [2024-01-27 15:24:35,924 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 168 predicate places. [2024-01-27 15:24:35,924 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 266 transitions, 5984 flow [2024-01-27 15:24:35,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:35,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:35,924 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:35,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-27 15:24:35,925 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:35,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:35,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2081503352, now seen corresponding path program 10 times [2024-01-27 15:24:35,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:35,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553696470] [2024-01-27 15:24:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:35,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:36,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:36,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553696470] [2024-01-27 15:24:36,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553696470] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:36,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:36,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:36,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023302210] [2024-01-27 15:24:36,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:36,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:36,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:36,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:36,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:36,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 266 transitions, 5984 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:36,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:36,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:36,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:39,763 INFO L124 PetriNetUnfolderBase]: 11640/18913 cut-off events. [2024-01-27 15:24:39,763 INFO L125 PetriNetUnfolderBase]: For 286910/286910 co-relation queries the response was YES. [2024-01-27 15:24:39,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96238 conditions, 18913 events. 11640/18913 cut-off events. For 286910/286910 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 150125 event pairs, 4189 based on Foata normal form. 12/18869 useless extension candidates. Maximal degree in co-relation 96152. Up to 10691 conditions per place. [2024-01-27 15:24:39,911 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 219 selfloop transitions, 124 changer transitions 1/348 dead transitions. [2024-01-27 15:24:39,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 348 transitions, 7108 flow [2024-01-27 15:24:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-01-27 15:24:39,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5977443609022557 [2024-01-27 15:24:39,913 INFO L175 Difference]: Start difference. First operand has 205 places, 266 transitions, 5984 flow. Second operand 7 states and 159 transitions. [2024-01-27 15:24:39,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 348 transitions, 7108 flow [2024-01-27 15:24:40,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 348 transitions, 6850 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-01-27 15:24:40,775 INFO L231 Difference]: Finished difference. Result has 206 places, 267 transitions, 5986 flow [2024-01-27 15:24:40,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5695, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5986, PETRI_PLACES=206, PETRI_TRANSITIONS=267} [2024-01-27 15:24:40,776 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 169 predicate places. [2024-01-27 15:24:40,776 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 267 transitions, 5986 flow [2024-01-27 15:24:40,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:40,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:40,776 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:40,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-01-27 15:24:40,776 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:40,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:40,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1316048608, now seen corresponding path program 11 times [2024-01-27 15:24:40,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:40,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913759362] [2024-01-27 15:24:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:40,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:41,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913759362] [2024-01-27 15:24:41,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913759362] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:41,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:41,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945471199] [2024-01-27 15:24:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:41,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:41,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:41,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:41,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:41,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:41,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 267 transitions, 5986 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:41,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:41,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:41,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:44,410 INFO L124 PetriNetUnfolderBase]: 11721/19101 cut-off events. [2024-01-27 15:24:44,410 INFO L125 PetriNetUnfolderBase]: For 288338/288338 co-relation queries the response was YES. [2024-01-27 15:24:44,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97564 conditions, 19101 events. 11721/19101 cut-off events. For 288338/288338 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 152549 event pairs, 4239 based on Foata normal form. 6/19051 useless extension candidates. Maximal degree in co-relation 97479. Up to 10691 conditions per place. [2024-01-27 15:24:44,609 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 223 selfloop transitions, 125 changer transitions 1/353 dead transitions. [2024-01-27 15:24:44,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 353 transitions, 7233 flow [2024-01-27 15:24:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-01-27 15:24:44,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5977443609022557 [2024-01-27 15:24:44,610 INFO L175 Difference]: Start difference. First operand has 206 places, 267 transitions, 5986 flow. Second operand 7 states and 159 transitions. [2024-01-27 15:24:44,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 353 transitions, 7233 flow [2024-01-27 15:24:45,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 353 transitions, 7078 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:24:45,487 INFO L231 Difference]: Finished difference. Result has 212 places, 271 transitions, 6175 flow [2024-01-27 15:24:45,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5834, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6175, PETRI_PLACES=212, PETRI_TRANSITIONS=271} [2024-01-27 15:24:45,488 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 175 predicate places. [2024-01-27 15:24:45,488 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 271 transitions, 6175 flow [2024-01-27 15:24:45,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:45,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:45,489 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:45,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-01-27 15:24:45,489 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:45,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:45,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1784206800, now seen corresponding path program 12 times [2024-01-27 15:24:45,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:45,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753956575] [2024-01-27 15:24:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:45,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:45,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:45,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753956575] [2024-01-27 15:24:45,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753956575] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:45,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:45,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:45,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892844902] [2024-01-27 15:24:45,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:45,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:45,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:45,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:45,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:45,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:45,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 271 transitions, 6175 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:45,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:45,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:45,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:49,055 INFO L124 PetriNetUnfolderBase]: 11700/19047 cut-off events. [2024-01-27 15:24:49,056 INFO L125 PetriNetUnfolderBase]: For 301852/301852 co-relation queries the response was YES. [2024-01-27 15:24:49,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98479 conditions, 19047 events. 11700/19047 cut-off events. For 301852/301852 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 151917 event pairs, 4251 based on Foata normal form. 6/18997 useless extension candidates. Maximal degree in co-relation 98392. Up to 10691 conditions per place. [2024-01-27 15:24:49,321 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 213 selfloop transitions, 123 changer transitions 8/348 dead transitions. [2024-01-27 15:24:49,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 348 transitions, 7304 flow [2024-01-27 15:24:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-01-27 15:24:49,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575187969924812 [2024-01-27 15:24:49,322 INFO L175 Difference]: Start difference. First operand has 212 places, 271 transitions, 6175 flow. Second operand 7 states and 153 transitions. [2024-01-27 15:24:49,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 348 transitions, 7304 flow [2024-01-27 15:24:50,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 348 transitions, 7086 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-27 15:24:50,277 INFO L231 Difference]: Finished difference. Result has 216 places, 270 transitions, 6183 flow [2024-01-27 15:24:50,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5957, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6183, PETRI_PLACES=216, PETRI_TRANSITIONS=270} [2024-01-27 15:24:50,277 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 179 predicate places. [2024-01-27 15:24:50,277 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 270 transitions, 6183 flow [2024-01-27 15:24:50,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:50,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:50,278 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:50,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-01-27 15:24:50,278 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:50,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash 124296322, now seen corresponding path program 13 times [2024-01-27 15:24:50,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:50,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063838235] [2024-01-27 15:24:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:50,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:50,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:50,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063838235] [2024-01-27 15:24:50,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063838235] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:50,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:50,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:50,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775330329] [2024-01-27 15:24:50,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:50,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:50,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:50,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:50,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:50,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 270 transitions, 6183 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:50,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:50,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:50,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:24:54,624 INFO L124 PetriNetUnfolderBase]: 11667/18984 cut-off events. [2024-01-27 15:24:54,624 INFO L125 PetriNetUnfolderBase]: For 302510/302510 co-relation queries the response was YES. [2024-01-27 15:24:54,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98164 conditions, 18984 events. 11667/18984 cut-off events. For 302510/302510 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 151297 event pairs, 4251 based on Foata normal form. 6/18922 useless extension candidates. Maximal degree in co-relation 98076. Up to 10691 conditions per place. [2024-01-27 15:24:54,810 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 214 selfloop transitions, 121 changer transitions 8/347 dead transitions. [2024-01-27 15:24:54,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 347 transitions, 7298 flow [2024-01-27 15:24:54,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:24:54,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:24:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-01-27 15:24:54,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575187969924812 [2024-01-27 15:24:54,812 INFO L175 Difference]: Start difference. First operand has 216 places, 270 transitions, 6183 flow. Second operand 7 states and 153 transitions. [2024-01-27 15:24:54,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 347 transitions, 7298 flow [2024-01-27 15:24:55,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 347 transitions, 7047 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:24:55,977 INFO L231 Difference]: Finished difference. Result has 216 places, 269 transitions, 6142 flow [2024-01-27 15:24:55,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5892, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6142, PETRI_PLACES=216, PETRI_TRANSITIONS=269} [2024-01-27 15:24:55,978 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 179 predicate places. [2024-01-27 15:24:55,978 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 269 transitions, 6142 flow [2024-01-27 15:24:55,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:55,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:24:55,978 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:24:55,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-01-27 15:24:55,978 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:24:55,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:24:55,979 INFO L85 PathProgramCache]: Analyzing trace with hash -697061826, now seen corresponding path program 14 times [2024-01-27 15:24:55,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:24:55,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513949868] [2024-01-27 15:24:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:24:55,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:24:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:24:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:24:56,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:24:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513949868] [2024-01-27 15:24:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513949868] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:24:56,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:24:56,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:24:56,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179212629] [2024-01-27 15:24:56,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:24:56,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:24:56,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:24:56,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:24:56,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:24:56,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:24:56,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 269 transitions, 6142 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:24:56,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:24:56,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:24:56,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:00,224 INFO L124 PetriNetUnfolderBase]: 11623/18778 cut-off events. [2024-01-27 15:25:00,224 INFO L125 PetriNetUnfolderBase]: For 301205/301205 co-relation queries the response was YES. [2024-01-27 15:25:00,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97676 conditions, 18778 events. 11623/18778 cut-off events. For 301205/301205 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 147579 event pairs, 4751 based on Foata normal form. 6/18728 useless extension candidates. Maximal degree in co-relation 97588. Up to 10691 conditions per place. [2024-01-27 15:25:00,379 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 213 selfloop transitions, 125 changer transitions 2/344 dead transitions. [2024-01-27 15:25:00,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 344 transitions, 7238 flow [2024-01-27 15:25:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:25:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:25:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-01-27 15:25:00,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-27 15:25:00,380 INFO L175 Difference]: Start difference. First operand has 216 places, 269 transitions, 6142 flow. Second operand 7 states and 152 transitions. [2024-01-27 15:25:00,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 344 transitions, 7238 flow [2024-01-27 15:25:01,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 344 transitions, 6987 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-27 15:25:01,275 INFO L231 Difference]: Finished difference. Result has 214 places, 268 transitions, 6111 flow [2024-01-27 15:25:01,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5861, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6111, PETRI_PLACES=214, PETRI_TRANSITIONS=268} [2024-01-27 15:25:01,275 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 177 predicate places. [2024-01-27 15:25:01,276 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 268 transitions, 6111 flow [2024-01-27 15:25:01,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:25:01,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:01,276 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:25:01,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-01-27 15:25:01,277 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:01,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:01,277 INFO L85 PathProgramCache]: Analyzing trace with hash -726975926, now seen corresponding path program 15 times [2024-01-27 15:25:01,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:01,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028985754] [2024-01-27 15:25:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:25:01,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:01,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028985754] [2024-01-27 15:25:01,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028985754] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:01,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:01,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:25:01,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319765459] [2024-01-27 15:25:01,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:01,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:25:01,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:01,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:25:01,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:25:01,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:25:01,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 268 transitions, 6111 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:25:01,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:01,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:25:01,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:05,722 INFO L124 PetriNetUnfolderBase]: 11602/18815 cut-off events. [2024-01-27 15:25:05,722 INFO L125 PetriNetUnfolderBase]: For 302102/302102 co-relation queries the response was YES. [2024-01-27 15:25:05,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97726 conditions, 18815 events. 11602/18815 cut-off events. For 302102/302102 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 149070 event pairs, 4183 based on Foata normal form. 6/18765 useless extension candidates. Maximal degree in co-relation 97640. Up to 10691 conditions per place. [2024-01-27 15:25:05,893 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 207 selfloop transitions, 123 changer transitions 8/342 dead transitions. [2024-01-27 15:25:05,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 342 transitions, 7189 flow [2024-01-27 15:25:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:25:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:25:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-01-27 15:25:05,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601503759398496 [2024-01-27 15:25:05,895 INFO L175 Difference]: Start difference. First operand has 214 places, 268 transitions, 6111 flow. Second operand 7 states and 149 transitions. [2024-01-27 15:25:05,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 342 transitions, 7189 flow [2024-01-27 15:25:06,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 342 transitions, 7036 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:25:06,872 INFO L231 Difference]: Finished difference. Result has 218 places, 266 transitions, 6132 flow [2024-01-27 15:25:06,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5916, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6132, PETRI_PLACES=218, PETRI_TRANSITIONS=266} [2024-01-27 15:25:06,873 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 181 predicate places. [2024-01-27 15:25:06,873 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 266 transitions, 6132 flow [2024-01-27 15:25:06,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:25:06,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:06,873 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:25:06,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-01-27 15:25:06,873 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:06,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1975929058, now seen corresponding path program 15 times [2024-01-27 15:25:06,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:06,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599367198] [2024-01-27 15:25:06,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:06,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:25:07,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599367198] [2024-01-27 15:25:07,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599367198] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:07,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:07,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:25:07,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496336462] [2024-01-27 15:25:07,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:07,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:25:07,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:07,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:25:07,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:25:07,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:25:07,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 266 transitions, 6132 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:25:07,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:07,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:25:07,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:11,120 INFO L124 PetriNetUnfolderBase]: 11944/19475 cut-off events. [2024-01-27 15:25:11,121 INFO L125 PetriNetUnfolderBase]: For 320663/320663 co-relation queries the response was YES. [2024-01-27 15:25:11,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101358 conditions, 19475 events. 11944/19475 cut-off events. For 320663/320663 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 156606 event pairs, 3037 based on Foata normal form. 14/19433 useless extension candidates. Maximal degree in co-relation 101272. Up to 9441 conditions per place. [2024-01-27 15:25:11,288 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 266 selfloop transitions, 122 changer transitions 1/393 dead transitions. [2024-01-27 15:25:11,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 393 transitions, 8555 flow [2024-01-27 15:25:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:25:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:25:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-01-27 15:25:11,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601503759398496 [2024-01-27 15:25:11,290 INFO L175 Difference]: Start difference. First operand has 218 places, 266 transitions, 6132 flow. Second operand 7 states and 149 transitions. [2024-01-27 15:25:11,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 393 transitions, 8555 flow [2024-01-27 15:25:12,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 393 transitions, 8236 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-27 15:25:12,298 INFO L231 Difference]: Finished difference. Result has 221 places, 287 transitions, 6810 flow [2024-01-27 15:25:12,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5838, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6810, PETRI_PLACES=221, PETRI_TRANSITIONS=287} [2024-01-27 15:25:12,299 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 184 predicate places. [2024-01-27 15:25:12,299 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 287 transitions, 6810 flow [2024-01-27 15:25:12,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:25:12,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:12,300 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:25:12,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-01-27 15:25:12,300 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:12,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:12,300 INFO L85 PathProgramCache]: Analyzing trace with hash -524351106, now seen corresponding path program 16 times [2024-01-27 15:25:12,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:12,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392955594] [2024-01-27 15:25:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:12,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:25:12,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:12,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392955594] [2024-01-27 15:25:12,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392955594] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:12,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:12,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:25:12,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870843828] [2024-01-27 15:25:12,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:12,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:25:12,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:12,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:25:12,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:25:12,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-27 15:25:12,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 287 transitions, 6810 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:25:12,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:12,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-27 15:25:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand