./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i -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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 06:48:07,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 06:48:07,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 06:48:07,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 06:48:07,878 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 06:48:07,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 06:48:07,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 06:48:07,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 06:48:07,911 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 06:48:07,912 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 06:48:07,912 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 06:48:07,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 06:48:07,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 06:48:07,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 06:48:07,914 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 06:48:07,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 06:48:07,915 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 06:48:07,915 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 06:48:07,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 06:48:07,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 06:48:07,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 06:48:07,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 06:48:07,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 06:48:07,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 06:48:07,924 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 06:48:07,924 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 06:48:07,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 06:48:07,925 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 06:48:07,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 06:48:07,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 06:48:07,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 06:48:07,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 06:48:07,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:48:07,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 06:48:07,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 06:48:07,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 06:48:07,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 06:48:07,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 06:48:07,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 06:48:07,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 06:48:07,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 06:48:07,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 06:48:07,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-10-13 06:48:08,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 06:48:08,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 06:48:08,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 06:48:08,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 06:48:08,212 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 06:48:08,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-10-13 06:48:09,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 06:48:09,888 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 06:48:09,889 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-10-13 06:48:09,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f34d305/499d2101babe415389932da25767f625/FLAG39ab0f0fb [2024-10-13 06:48:09,925 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f34d305/499d2101babe415389932da25767f625 [2024-10-13 06:48:09,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 06:48:09,928 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 06:48:09,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 06:48:09,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 06:48:09,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 06:48:09,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:48:09" (1/1) ... [2024-10-13 06:48:09,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:09, skipping insertion in model container [2024-10-13 06:48:09,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:48:09" (1/1) ... [2024-10-13 06:48:10,012 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 06:48:10,554 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i[43284,43297] [2024-10-13 06:48:10,562 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i[43491,43504] [2024-10-13 06:48:10,566 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i[43772,43785] [2024-10-13 06:48:10,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:48:10,589 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 06:48:10,647 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i[43284,43297] [2024-10-13 06:48:10,649 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i[43491,43504] [2024-10-13 06:48:10,651 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i[43772,43785] [2024-10-13 06:48:10,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:48:10,723 INFO L204 MainTranslator]: Completed translation [2024-10-13 06:48:10,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10 WrapperNode [2024-10-13 06:48:10,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 06:48:10,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 06:48:10,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 06:48:10,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 06:48:10,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,759 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,798 INFO L138 Inliner]: procedures = 274, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 248 [2024-10-13 06:48:10,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 06:48:10,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 06:48:10,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 06:48:10,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 06:48:10,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,850 INFO L175 MemorySlicer]: Split 51 memory accesses to 5 slices as follows [2, 8, 5, 4, 32]. 63 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 5, 0, 0]. The 18 writes are split as follows [0, 0, 0, 3, 15]. [2024-10-13 06:48:10,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 06:48:10,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 06:48:10,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 06:48:10,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 06:48:10,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (1/1) ... [2024-10-13 06:48:10,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:48:10,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:48:10,933 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) [2024-10-13 06:48:10,936 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 [2024-10-13 06:48:10,978 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-13 06:48:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-13 06:48:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-13 06:48:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-13 06:48:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 06:48:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 06:48:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 06:48:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 06:48:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 06:48:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 06:48:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 06:48:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 06:48:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 06:48:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 06:48:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 06:48:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 06:48:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 06:48:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 06:48:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 06:48:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 06:48:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 06:48:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 06:48:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 06:48:10,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 06:48:10,984 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 06:48:11,136 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 06:48:11,138 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 06:48:11,490 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 06:48:11,490 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 06:48:11,767 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 06:48:11,768 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 06:48:11,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:48:11 BoogieIcfgContainer [2024-10-13 06:48:11,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 06:48:11,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 06:48:11,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 06:48:11,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 06:48:11,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:48:09" (1/3) ... [2024-10-13 06:48:11,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5113e544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:48:11, skipping insertion in model container [2024-10-13 06:48:11,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:10" (2/3) ... [2024-10-13 06:48:11,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5113e544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:48:11, skipping insertion in model container [2024-10-13 06:48:11,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:48:11" (3/3) ... [2024-10-13 06:48:11,776 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-10-13 06:48:11,795 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 06:48:11,795 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-13 06:48:11,796 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 06:48:11,857 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 06:48:11,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 106 flow [2024-10-13 06:48:11,917 INFO L124 PetriNetUnfolderBase]: 7/44 cut-off events. [2024-10-13 06:48:11,918 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 06:48:11,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 7/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-10-13 06:48:11,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 46 transitions, 106 flow [2024-10-13 06:48:11,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 42 transitions, 93 flow [2024-10-13 06:48:11,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 06:48:11,939 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d6b8da8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 06:48:11,939 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 06:48:11,942 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 06:48:11,942 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 06:48:11,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:48:11,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:11,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 06:48:11,943 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:11,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:11,949 INFO L85 PathProgramCache]: Analyzing trace with hash 647013, now seen corresponding path program 1 times [2024-10-13 06:48:11,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:11,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634705572] [2024-10-13 06:48:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:11,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:12,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:12,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634705572] [2024-10-13 06:48:12,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634705572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:48:12,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:48:12,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 06:48:12,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928430553] [2024-10-13 06:48:12,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:48:12,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 06:48:12,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:12,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 06:48:12,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 06:48:12,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-13 06:48:12,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 93 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:12,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:12,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-13 06:48:12,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:48:12,472 INFO L124 PetriNetUnfolderBase]: 428/771 cut-off events. [2024-10-13 06:48:12,473 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-13 06:48:12,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 771 events. 428/771 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3499 event pairs, 334 based on Foata normal form. 47/731 useless extension candidates. Maximal degree in co-relation 1449. Up to 697 conditions per place. [2024-10-13 06:48:12,480 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 30 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2024-10-13 06:48:12,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 143 flow [2024-10-13 06:48:12,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 06:48:12,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 06:48:12,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 53 transitions. [2024-10-13 06:48:12,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-10-13 06:48:12,494 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 93 flow. Second operand 2 states and 53 transitions. [2024-10-13 06:48:12,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 143 flow [2024-10-13 06:48:12,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 06:48:12,499 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 78 flow [2024-10-13 06:48:12,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2024-10-13 06:48:12,504 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2024-10-13 06:48:12,505 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 78 flow [2024-10-13 06:48:12,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:12,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:12,505 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:48:12,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 06:48:12,505 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:12,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:12,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1703533609, now seen corresponding path program 1 times [2024-10-13 06:48:12,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:12,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541091375] [2024-10-13 06:48:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:12,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:12,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:12,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541091375] [2024-10-13 06:48:12,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541091375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:48:12,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:48:12,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 06:48:12,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140502944] [2024-10-13 06:48:12,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:48:12,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 06:48:12,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:12,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 06:48:12,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 06:48:12,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-13 06:48:12,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2024-10-13 06:48:12,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:12,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-13 06:48:12,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:48:12,915 INFO L124 PetriNetUnfolderBase]: 408/749 cut-off events. [2024-10-13 06:48:12,915 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-13 06:48:12,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 749 events. 408/749 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3501 event pairs, 307 based on Foata normal form. 0/686 useless extension candidates. Maximal degree in co-relation 1452. Up to 627 conditions per place. [2024-10-13 06:48:12,923 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-10-13 06:48:12,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 184 flow [2024-10-13 06:48:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 06:48:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 06:48:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-10-13 06:48:12,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-10-13 06:48:12,925 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 78 flow. Second operand 3 states and 72 transitions. [2024-10-13 06:48:12,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 184 flow [2024-10-13 06:48:12,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 06:48:12,927 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 80 flow [2024-10-13 06:48:12,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-10-13 06:48:12,930 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2024-10-13 06:48:12,930 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 80 flow [2024-10-13 06:48:12,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2024-10-13 06:48:12,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:12,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:48:12,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 06:48:12,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:12,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:12,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1269932666, now seen corresponding path program 1 times [2024-10-13 06:48:12,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869408975] [2024-10-13 06:48:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:13,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:13,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869408975] [2024-10-13 06:48:13,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869408975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:48:13,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:48:13,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 06:48:13,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917978677] [2024-10-13 06:48:13,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:48:13,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 06:48:13,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:13,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 06:48:13,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 06:48:13,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-13 06:48:13,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:13,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:13,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-13 06:48:13,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:48:13,746 INFO L124 PetriNetUnfolderBase]: 674/1238 cut-off events. [2024-10-13 06:48:13,746 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-10-13 06:48:13,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2423 conditions, 1238 events. 674/1238 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6150 event pairs, 74 based on Foata normal form. 0/1177 useless extension candidates. Maximal degree in co-relation 2419. Up to 658 conditions per place. [2024-10-13 06:48:13,755 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 70 selfloop transitions, 10 changer transitions 3/90 dead transitions. [2024-10-13 06:48:13,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 90 transitions, 367 flow [2024-10-13 06:48:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 06:48:13,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 06:48:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-13 06:48:13,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-10-13 06:48:13,760 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 80 flow. Second operand 6 states and 145 transitions. [2024-10-13 06:48:13,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 90 transitions, 367 flow [2024-10-13 06:48:13,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 90 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 06:48:13,764 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 144 flow [2024-10-13 06:48:13,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-10-13 06:48:13,766 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-10-13 06:48:13,766 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 144 flow [2024-10-13 06:48:13,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:13,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:13,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:48:13,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 06:48:13,767 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:13,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:13,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1989387445, now seen corresponding path program 1 times [2024-10-13 06:48:13,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:13,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063281633] [2024-10-13 06:48:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:13,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:13,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:13,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063281633] [2024-10-13 06:48:13,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063281633] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:48:13,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:48:13,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 06:48:13,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638921458] [2024-10-13 06:48:13,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:48:13,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 06:48:13,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:13,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 06:48:13,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 06:48:13,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-13 06:48:13,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:13,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:13,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-13 06:48:13,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:48:14,024 INFO L124 PetriNetUnfolderBase]: 419/804 cut-off events. [2024-10-13 06:48:14,025 INFO L125 PetriNetUnfolderBase]: For 111/114 co-relation queries the response was YES. [2024-10-13 06:48:14,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 804 events. 419/804 cut-off events. For 111/114 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3522 event pairs, 215 based on Foata normal form. 29/811 useless extension candidates. Maximal degree in co-relation 1662. Up to 416 conditions per place. [2024-10-13 06:48:14,030 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 36 selfloop transitions, 4 changer transitions 3/49 dead transitions. [2024-10-13 06:48:14,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 213 flow [2024-10-13 06:48:14,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 06:48:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 06:48:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-13 06:48:14,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-10-13 06:48:14,033 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 144 flow. Second operand 3 states and 73 transitions. [2024-10-13 06:48:14,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 213 flow [2024-10-13 06:48:14,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 207 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 06:48:14,036 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 106 flow [2024-10-13 06:48:14,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-10-13 06:48:14,037 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-10-13 06:48:14,037 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 106 flow [2024-10-13 06:48:14,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:14,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:14,038 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:48:14,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 06:48:14,038 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:14,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:14,039 INFO L85 PathProgramCache]: Analyzing trace with hash 969934260, now seen corresponding path program 1 times [2024-10-13 06:48:14,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:14,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193645929] [2024-10-13 06:48:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:14,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:14,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193645929] [2024-10-13 06:48:14,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193645929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:48:14,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:48:14,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 06:48:14,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600584328] [2024-10-13 06:48:14,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:48:14,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 06:48:14,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:14,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 06:48:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 06:48:14,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-13 06:48:14,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:14,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:14,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-13 06:48:14,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:48:14,287 INFO L124 PetriNetUnfolderBase]: 249/543 cut-off events. [2024-10-13 06:48:14,287 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-10-13 06:48:14,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 543 events. 249/543 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2146 event pairs, 85 based on Foata normal form. 32/565 useless extension candidates. Maximal degree in co-relation 1121. Up to 252 conditions per place. [2024-10-13 06:48:14,291 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 33 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-10-13 06:48:14,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 207 flow [2024-10-13 06:48:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 06:48:14,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 06:48:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-10-13 06:48:14,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-10-13 06:48:14,297 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 106 flow. Second operand 3 states and 70 transitions. [2024-10-13 06:48:14,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 207 flow [2024-10-13 06:48:14,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 197 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 06:48:14,299 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 108 flow [2024-10-13 06:48:14,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-10-13 06:48:14,302 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-10-13 06:48:14,303 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 108 flow [2024-10-13 06:48:14,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:14,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:14,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:48:14,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 06:48:14,304 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:14,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:14,306 INFO L85 PathProgramCache]: Analyzing trace with hash 677134911, now seen corresponding path program 1 times [2024-10-13 06:48:14,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:14,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765868081] [2024-10-13 06:48:14,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:14,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:15,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:15,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765868081] [2024-10-13 06:48:15,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765868081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:48:15,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:48:15,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 06:48:15,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005540480] [2024-10-13 06:48:15,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:48:15,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 06:48:15,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:15,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 06:48:15,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-13 06:48:15,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-13 06:48:15,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 108 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:15,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:15,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-13 06:48:15,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:48:16,332 INFO L124 PetriNetUnfolderBase]: 370/808 cut-off events. [2024-10-13 06:48:16,332 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-10-13 06:48:16,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1771 conditions, 808 events. 370/808 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3834 event pairs, 68 based on Foata normal form. 0/795 useless extension candidates. Maximal degree in co-relation 1764. Up to 260 conditions per place. [2024-10-13 06:48:16,337 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 63 selfloop transitions, 16 changer transitions 8/93 dead transitions. [2024-10-13 06:48:16,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 93 transitions, 459 flow [2024-10-13 06:48:16,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 06:48:16,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 06:48:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-10-13 06:48:16,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4251207729468599 [2024-10-13 06:48:16,341 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 108 flow. Second operand 9 states and 176 transitions. [2024-10-13 06:48:16,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 93 transitions, 459 flow [2024-10-13 06:48:16,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 93 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 06:48:16,345 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 214 flow [2024-10-13 06:48:16,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-10-13 06:48:16,347 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-10-13 06:48:16,347 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 214 flow [2024-10-13 06:48:16,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:16,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:16,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:48:16,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 06:48:16,348 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:16,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:16,349 INFO L85 PathProgramCache]: Analyzing trace with hash -340202185, now seen corresponding path program 2 times [2024-10-13 06:48:16,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:16,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196286909] [2024-10-13 06:48:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:16,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:17,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:17,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196286909] [2024-10-13 06:48:17,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196286909] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:48:17,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:48:17,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 06:48:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150275918] [2024-10-13 06:48:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:48:17,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 06:48:17,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:17,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 06:48:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-13 06:48:17,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-13 06:48:17,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 214 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:17,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:17,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-13 06:48:17,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:48:17,877 INFO L124 PetriNetUnfolderBase]: 479/1063 cut-off events. [2024-10-13 06:48:17,877 INFO L125 PetriNetUnfolderBase]: For 857/858 co-relation queries the response was YES. [2024-10-13 06:48:17,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2792 conditions, 1063 events. 479/1063 cut-off events. For 857/858 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5848 event pairs, 131 based on Foata normal form. 0/1041 useless extension candidates. Maximal degree in co-relation 2779. Up to 636 conditions per place. [2024-10-13 06:48:17,885 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 69 selfloop transitions, 15 changer transitions 4/94 dead transitions. [2024-10-13 06:48:17,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 94 transitions, 580 flow [2024-10-13 06:48:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 06:48:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 06:48:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-10-13 06:48:17,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40096618357487923 [2024-10-13 06:48:17,888 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 214 flow. Second operand 9 states and 166 transitions. [2024-10-13 06:48:17,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 94 transitions, 580 flow [2024-10-13 06:48:17,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 94 transitions, 562 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 06:48:17,898 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 359 flow [2024-10-13 06:48:17,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=359, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-10-13 06:48:17,899 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-10-13 06:48:17,900 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 359 flow [2024-10-13 06:48:17,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:17,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:17,900 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:48:17,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 06:48:17,901 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:17,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:17,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1004554051, now seen corresponding path program 3 times [2024-10-13 06:48:17,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:17,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287373617] [2024-10-13 06:48:17,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:17,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:18,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:18,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287373617] [2024-10-13 06:48:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287373617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:48:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:48:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 06:48:18,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848347522] [2024-10-13 06:48:18,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:48:18,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 06:48:18,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:18,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 06:48:18,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-13 06:48:18,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-13 06:48:18,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 359 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:18,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:18,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-13 06:48:18,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:48:19,515 INFO L124 PetriNetUnfolderBase]: 551/1189 cut-off events. [2024-10-13 06:48:19,515 INFO L125 PetriNetUnfolderBase]: For 1601/1602 co-relation queries the response was YES. [2024-10-13 06:48:19,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3416 conditions, 1189 events. 551/1189 cut-off events. For 1601/1602 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6392 event pairs, 52 based on Foata normal form. 22/1196 useless extension candidates. Maximal degree in co-relation 3397. Up to 322 conditions per place. [2024-10-13 06:48:19,525 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 90 selfloop transitions, 32 changer transitions 2/130 dead transitions. [2024-10-13 06:48:19,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 130 transitions, 878 flow [2024-10-13 06:48:19,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 06:48:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 06:48:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-10-13 06:48:19,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2024-10-13 06:48:19,528 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 359 flow. Second operand 12 states and 228 transitions. [2024-10-13 06:48:19,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 130 transitions, 878 flow [2024-10-13 06:48:19,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 130 transitions, 830 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-10-13 06:48:19,541 INFO L231 Difference]: Finished difference. Result has 81 places, 70 transitions, 498 flow [2024-10-13 06:48:19,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=498, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2024-10-13 06:48:19,542 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-10-13 06:48:19,543 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 498 flow [2024-10-13 06:48:19,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:19,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:19,544 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:48:19,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 06:48:19,544 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:19,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:19,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1884402519, now seen corresponding path program 4 times [2024-10-13 06:48:19,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:19,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702099454] [2024-10-13 06:48:19,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:19,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:20,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:20,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702099454] [2024-10-13 06:48:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702099454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:48:20,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:48:20,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 06:48:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206503030] [2024-10-13 06:48:20,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:48:20,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 06:48:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 06:48:20,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-13 06:48:20,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-13 06:48:20,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 498 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:20,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:20,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-13 06:48:20,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:48:21,207 INFO L124 PetriNetUnfolderBase]: 625/1367 cut-off events. [2024-10-13 06:48:21,207 INFO L125 PetriNetUnfolderBase]: For 3154/3154 co-relation queries the response was YES. [2024-10-13 06:48:21,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4386 conditions, 1367 events. 625/1367 cut-off events. For 3154/3154 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7595 event pairs, 138 based on Foata normal form. 0/1356 useless extension candidates. Maximal degree in co-relation 4361. Up to 681 conditions per place. [2024-10-13 06:48:21,217 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 89 selfloop transitions, 22 changer transitions 2/119 dead transitions. [2024-10-13 06:48:21,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 119 transitions, 960 flow [2024-10-13 06:48:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 06:48:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 06:48:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-10-13 06:48:21,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4178743961352657 [2024-10-13 06:48:21,219 INFO L175 Difference]: Start difference. First operand has 81 places, 70 transitions, 498 flow. Second operand 9 states and 173 transitions. [2024-10-13 06:48:21,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 119 transitions, 960 flow [2024-10-13 06:48:21,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 119 transitions, 884 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-10-13 06:48:21,232 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 635 flow [2024-10-13 06:48:21,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2024-10-13 06:48:21,233 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-10-13 06:48:21,233 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 635 flow [2024-10-13 06:48:21,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:21,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:21,234 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:48:21,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 06:48:21,234 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:21,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1801865796, now seen corresponding path program 1 times [2024-10-13 06:48:21,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:21,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406850758] [2024-10-13 06:48:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:21,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:22,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:22,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406850758] [2024-10-13 06:48:22,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406850758] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:48:22,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171318991] [2024-10-13 06:48:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:22,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:48:22,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:48:22,655 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) [2024-10-13 06:48:22,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 06:48:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:22,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-13 06:48:22,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:48:22,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-13 06:48:23,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 111 [2024-10-13 06:48:23,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 06:48:23,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2024-10-13 06:48:23,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 57 [2024-10-13 06:48:24,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2024-10-13 06:48:24,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 52 [2024-10-13 06:48:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:24,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:48:24,685 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 06:48:24,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-10-13 06:48:24,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 06:48:24,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-10-13 06:48:26,267 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 06:48:26,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-10-13 06:48:26,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 06:48:26,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-10-13 06:48:27,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-10-13 06:48:27,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2024-10-13 06:48:27,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-10-13 06:48:27,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2024-10-13 06:48:27,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-13 06:48:27,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2024-10-13 06:48:27,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-13 06:48:27,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2024-10-13 06:48:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:28,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171318991] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:48:28,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:48:28,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-10-13 06:48:28,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971656115] [2024-10-13 06:48:28,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:48:28,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-13 06:48:28,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-13 06:48:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2024-10-13 06:48:29,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-10-13 06:48:29,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 635 flow. Second operand has 28 states, 28 states have (on average 11.428571428571429) internal successors, (320), 28 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:29,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:29,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-10-13 06:48:29,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:48:32,461 INFO L124 PetriNetUnfolderBase]: 854/1781 cut-off events. [2024-10-13 06:48:32,461 INFO L125 PetriNetUnfolderBase]: For 4683/4685 co-relation queries the response was YES. [2024-10-13 06:48:32,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5802 conditions, 1781 events. 854/1781 cut-off events. For 4683/4685 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10193 event pairs, 181 based on Foata normal form. 10/1783 useless extension candidates. Maximal degree in co-relation 5771. Up to 1072 conditions per place. [2024-10-13 06:48:32,477 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 132 selfloop transitions, 40 changer transitions 2/179 dead transitions. [2024-10-13 06:48:32,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 179 transitions, 1404 flow [2024-10-13 06:48:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 06:48:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 06:48:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 292 transitions. [2024-10-13 06:48:32,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3734015345268542 [2024-10-13 06:48:32,482 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 635 flow. Second operand 17 states and 292 transitions. [2024-10-13 06:48:32,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 179 transitions, 1404 flow [2024-10-13 06:48:32,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 179 transitions, 1317 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-10-13 06:48:32,499 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 889 flow [2024-10-13 06:48:32,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=889, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2024-10-13 06:48:32,500 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-10-13 06:48:32,500 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 889 flow [2024-10-13 06:48:32,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.428571428571429) internal successors, (320), 28 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:32,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:48:32,501 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:48:32,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 06:48:32,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 06:48:32,706 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:48:32,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:48:32,706 INFO L85 PathProgramCache]: Analyzing trace with hash 406995244, now seen corresponding path program 2 times [2024-10-13 06:48:32,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:48:32,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989081692] [2024-10-13 06:48:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:48:32,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:48:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:48:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:33,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:48:33,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989081692] [2024-10-13 06:48:33,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989081692] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:48:33,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866151271] [2024-10-13 06:48:33,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 06:48:33,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:48:33,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:48:33,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:48:33,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 06:48:34,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 06:48:34,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:48:34,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-13 06:48:34,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:48:34,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-13 06:48:34,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2024-10-13 06:48:34,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 06:48:34,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 105 [2024-10-13 06:48:34,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-13 06:48:34,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 06:48:34,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2024-10-13 06:48:34,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 06:48:34,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 06:48:34,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 37 [2024-10-13 06:48:34,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 45 [2024-10-13 06:48:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:34,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:48:35,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 06:48:35,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-10-13 06:48:35,465 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 06:48:35,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-10-13 06:48:42,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 06:48:42,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-10-13 06:48:42,057 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 06:48:42,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-10-13 06:48:47,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 06:48:47,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-10-13 06:48:47,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-10-13 06:48:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:48:48,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866151271] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:48:48,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:48:48,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-10-13 06:48:48,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864509491] [2024-10-13 06:48:48,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:48:48,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-13 06:48:48,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:48:48,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-13 06:48:48,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=604, Unknown=2, NotChecked=0, Total=756 [2024-10-13 06:48:52,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 06:48:56,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 06:48:57,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2024-10-13 06:48:57,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 889 flow. Second operand has 28 states, 28 states have (on average 9.75) internal successors, (273), 28 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:48:57,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:48:57,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2024-10-13 06:48:57,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:00,138 INFO L124 PetriNetUnfolderBase]: 1733/3175 cut-off events. [2024-10-13 06:49:00,139 INFO L125 PetriNetUnfolderBase]: For 10905/10905 co-relation queries the response was YES. [2024-10-13 06:49:00,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11512 conditions, 3175 events. 1733/3175 cut-off events. For 10905/10905 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 17599 event pairs, 150 based on Foata normal form. 18/3184 useless extension candidates. Maximal degree in co-relation 11474. Up to 1331 conditions per place. [2024-10-13 06:49:00,165 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 164 selfloop transitions, 72 changer transitions 4/243 dead transitions. [2024-10-13 06:49:00,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 243 transitions, 2139 flow [2024-10-13 06:49:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 06:49:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 06:49:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 273 transitions. [2024-10-13 06:49:00,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3491048593350384 [2024-10-13 06:49:00,167 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 889 flow. Second operand 17 states and 273 transitions. [2024-10-13 06:49:00,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 243 transitions, 2139 flow [2024-10-13 06:49:00,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 243 transitions, 2016 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-10-13 06:49:00,201 INFO L231 Difference]: Finished difference. Result has 127 places, 151 transitions, 1417 flow [2024-10-13 06:49:00,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1417, PETRI_PLACES=127, PETRI_TRANSITIONS=151} [2024-10-13 06:49:00,201 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-10-13 06:49:00,201 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 151 transitions, 1417 flow [2024-10-13 06:49:00,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.75) internal successors, (273), 28 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:00,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:00,202 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:00,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 06:49:00,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 06:49:00,407 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:49:00,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:00,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1175177458, now seen corresponding path program 3 times [2024-10-13 06:49:00,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:00,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943040980] [2024-10-13 06:49:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:00,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:01,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:01,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943040980] [2024-10-13 06:49:01,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943040980] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:01,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635392841] [2024-10-13 06:49:01,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 06:49:01,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:01,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:01,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:01,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 06:49:01,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 06:49:01,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:01,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-13 06:49:01,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:01,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-13 06:49:02,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 111 [2024-10-13 06:49:02,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 06:49:02,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 06:49:02,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2024-10-13 06:49:02,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 57 [2024-10-13 06:49:02,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2024-10-13 06:49:02,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 52 [2024-10-13 06:49:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:02,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:03,072 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 06:49:03,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-10-13 06:49:03,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 06:49:03,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-10-13 06:49:08,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 06:49:08,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-10-13 06:49:08,329 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 06:49:08,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-10-13 06:49:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:10,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635392841] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:10,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:10,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-10-13 06:49:10,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063831475] [2024-10-13 06:49:10,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:10,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-13 06:49:10,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:10,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-13 06:49:10,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=627, Unknown=1, NotChecked=0, Total=756 [2024-10-13 06:49:14,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 06:49:18,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 06:49:18,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2024-10-13 06:49:18,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 151 transitions, 1417 flow. Second operand has 28 states, 28 states have (on average 9.75) internal successors, (273), 28 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:18,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:18,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2024-10-13 06:49:18,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:22,666 INFO L124 PetriNetUnfolderBase]: 2146/3884 cut-off events. [2024-10-13 06:49:22,666 INFO L125 PetriNetUnfolderBase]: For 17118/17118 co-relation queries the response was YES. [2024-10-13 06:49:22,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15128 conditions, 3884 events. 2146/3884 cut-off events. For 17118/17118 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 22542 event pairs, 213 based on Foata normal form. 18/3890 useless extension candidates. Maximal degree in co-relation 15084. Up to 1173 conditions per place. [2024-10-13 06:49:22,696 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 200 selfloop transitions, 93 changer transitions 5/301 dead transitions. [2024-10-13 06:49:22,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 301 transitions, 2927 flow [2024-10-13 06:49:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 06:49:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 06:49:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 307 transitions. [2024-10-13 06:49:22,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37077294685990336 [2024-10-13 06:49:22,698 INFO L175 Difference]: Start difference. First operand has 127 places, 151 transitions, 1417 flow. Second operand 18 states and 307 transitions. [2024-10-13 06:49:22,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 301 transitions, 2927 flow [2024-10-13 06:49:22,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 301 transitions, 2787 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-10-13 06:49:22,763 INFO L231 Difference]: Finished difference. Result has 147 places, 184 transitions, 1969 flow [2024-10-13 06:49:22,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1969, PETRI_PLACES=147, PETRI_TRANSITIONS=184} [2024-10-13 06:49:22,766 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-10-13 06:49:22,766 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 184 transitions, 1969 flow [2024-10-13 06:49:22,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.75) internal successors, (273), 28 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:22,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:22,766 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:22,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 06:49:22,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:22,967 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:49:22,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1463390868, now seen corresponding path program 4 times [2024-10-13 06:49:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:22,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919532420] [2024-10-13 06:49:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:22,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:23,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919532420] [2024-10-13 06:49:23,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919532420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:23,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348779763] [2024-10-13 06:49:23,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 06:49:23,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:23,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:23,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:23,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 06:49:24,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 06:49:24,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:24,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-13 06:49:24,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:24,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-10-13 06:49:24,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 153 [2024-10-13 06:49:24,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 06:49:24,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 139 [2024-10-13 06:49:24,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 06:49:24,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 34 [2024-10-13 06:49:24,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 06:49:24,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 34 [2024-10-13 06:49:24,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 06:49:24,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2024-10-13 06:49:24,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-13 06:49:24,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 45 [2024-10-13 06:49:24,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 49 [2024-10-13 06:49:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:24,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:25,051 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 06:49:25,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-10-13 06:49:25,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 06:49:25,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22