./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.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 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:31:03,358 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:31:03,444 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:31:03,451 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:31:03,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:31:03,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:31:03,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:31:03,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:31:03,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:31:03,492 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:31:03,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:31:03,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:31:03,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:31:03,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:31:03,495 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:31:03,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:31:03,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:31:03,496 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:31:03,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:31:03,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:31:03,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:31:03,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:31:03,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:31:03,500 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:31:03,500 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:31:03,501 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:31:03,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:31:03,501 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:31:03,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:31:03,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:31:03,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:31:03,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:31:03,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:31:03,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:31:03,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:31:03,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:31:03,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:31:03,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:31:03,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:31:03,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:31:03,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:31:03,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:31:03,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2024-11-12 08:31:03,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:31:03,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:31:03,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:31:03,958 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:31:03,959 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:31:03,960 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-12 08:31:05,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:31:06,021 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:31:06,022 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-12 08:31:06,036 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2d73e6b/c0e32f4a561e4f3da2932cfb170468cd/FLAG91d7be534 [2024-11-12 08:31:06,051 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2d73e6b/c0e32f4a561e4f3da2932cfb170468cd [2024-11-12 08:31:06,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:31:06,054 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:31:06,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:31:06,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:31:06,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:31:06,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2c8cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06, skipping insertion in model container [2024-11-12 08:31:06,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:31:06,460 WARN L250 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-deagle/circular_buffer_ok.i[30451,30464] [2024-11-12 08:31:06,473 WARN L250 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-deagle/circular_buffer_ok.i[30681,30694] [2024-11-12 08:31:06,482 WARN L250 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-deagle/circular_buffer_ok.i[30979,30992] [2024-11-12 08:31:06,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:31:06,512 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:31:06,550 WARN L250 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-deagle/circular_buffer_ok.i[30451,30464] [2024-11-12 08:31:06,552 WARN L250 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-deagle/circular_buffer_ok.i[30681,30694] [2024-11-12 08:31:06,554 WARN L250 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-deagle/circular_buffer_ok.i[30979,30992] [2024-11-12 08:31:06,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:31:06,610 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:31:06,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06 WrapperNode [2024-11-12 08:31:06,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:31:06,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:31:06,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:31:06,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:31:06,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,642 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,685 INFO L138 Inliner]: procedures = 168, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-11-12 08:31:06,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:31:06,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:31:06,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:31:06,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:31:06,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,739 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-11-12 08:31:06,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:31:06,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:31:06,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:31:06,777 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:31:06,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (1/1) ... [2024-11-12 08:31:06,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:31:06,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:31:06,818 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) [2024-11-12 08:31:06,821 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 [2024-11-12 08:31:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:31:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:31:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 08:31:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 08:31:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-12 08:31:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-12 08:31:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-12 08:31:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-12 08:31:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:31:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:31:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 08:31:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 08:31:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 08:31:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:31:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-12 08:31:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-12 08:31:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-12 08:31:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-12 08:31:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:31:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:31:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 08:31:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 08:31:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 08:31:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:31:06,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:31:06,874 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:31:07,008 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:31:07,010 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:31:07,264 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:31:07,265 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:31:07,512 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:31:07,512 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 08:31:07,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:31:07 BoogieIcfgContainer [2024-11-12 08:31:07,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:31:07,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:31:07,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:31:07,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:31:07,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:31:06" (1/3) ... [2024-11-12 08:31:07,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53403381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:31:07, skipping insertion in model container [2024-11-12 08:31:07,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:06" (2/3) ... [2024-11-12 08:31:07,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53403381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:31:07, skipping insertion in model container [2024-11-12 08:31:07,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:31:07" (3/3) ... [2024-11-12 08:31:07,522 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-11-12 08:31:07,538 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:31:07,539 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-12 08:31:07,539 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:31:07,601 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 08:31:07,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 46 transitions, 106 flow [2024-11-12 08:31:07,676 INFO L124 PetriNetUnfolderBase]: 8/44 cut-off events. [2024-11-12 08:31:07,677 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:31:07,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 8/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 115 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-11-12 08:31:07,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 46 transitions, 106 flow [2024-11-12 08:31:07,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 42 transitions, 93 flow [2024-11-12 08:31:07,695 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:31:07,701 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;@1b40496c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:31:07,701 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-12 08:31:07,713 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:31:07,714 INFO L124 PetriNetUnfolderBase]: 8/39 cut-off events. [2024-11-12 08:31:07,714 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:31:07,714 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:07,715 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:07,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-12 08:31:07,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:07,722 INFO L85 PathProgramCache]: Analyzing trace with hash 576897654, now seen corresponding path program 1 times [2024-11-12 08:31:07,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:07,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402581076] [2024-11-12 08:31:07,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:07,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:08,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:08,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402581076] [2024-11-12 08:31:08,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402581076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:08,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:08,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:31:08,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290101031] [2024-11-12 08:31:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:08,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:31:08,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:08,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:31:08,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:31:08,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-12 08:31:08,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:08,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:08,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-12 08:31:08,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:08,659 INFO L124 PetriNetUnfolderBase]: 392/721 cut-off events. [2024-11-12 08:31:08,659 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-12 08:31:08,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 721 events. 392/721 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3469 event pairs, 290 based on Foata normal form. 65/712 useless extension candidates. Maximal degree in co-relation 1316. Up to 614 conditions per place. [2024-11-12 08:31:08,670 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 26 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2024-11-12 08:31:08,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 137 flow [2024-11-12 08:31:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:31:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:31:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-12 08:31:08,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 08:31:08,685 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 93 flow. Second operand 3 states and 69 transitions. [2024-11-12 08:31:08,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 137 flow [2024-11-12 08:31:08,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 08:31:08,691 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 80 flow [2024-11-12 08:31:08,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2024-11-12 08:31:08,699 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2024-11-12 08:31:08,699 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 80 flow [2024-11-12 08:31:08,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:08,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:08,700 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:08,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:31:08,702 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-12 08:31:08,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash -220093088, now seen corresponding path program 1 times [2024-11-12 08:31:08,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:08,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359756182] [2024-11-12 08:31:08,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:08,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:08,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:08,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359756182] [2024-11-12 08:31:08,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359756182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:08,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:08,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:31:08,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395954261] [2024-11-12 08:31:08,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:08,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:31:08,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:31:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:31:08,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-12 08:31:08,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:08,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:08,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-12 08:31:08,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:09,018 INFO L124 PetriNetUnfolderBase]: 626/1167 cut-off events. [2024-11-12 08:31:09,019 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 08:31:09,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2186 conditions, 1167 events. 626/1167 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5331 event pairs, 231 based on Foata normal form. 24/1092 useless extension candidates. Maximal degree in co-relation 2180. Up to 572 conditions per place. [2024-11-12 08:31:09,030 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 42 selfloop transitions, 3 changer transitions 2/57 dead transitions. [2024-11-12 08:31:09,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 217 flow [2024-11-12 08:31:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:31:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:31:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-11-12 08:31:09,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-11-12 08:31:09,032 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 80 flow. Second operand 3 states and 90 transitions. [2024-11-12 08:31:09,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 217 flow [2024-11-12 08:31:09,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:31:09,036 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 94 flow [2024-11-12 08:31:09,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-12 08:31:09,040 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-11-12 08:31:09,040 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 94 flow [2024-11-12 08:31:09,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:09,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:09,041 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:09,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:31:09,042 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-12 08:31:09,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:09,044 INFO L85 PathProgramCache]: Analyzing trace with hash 703926712, now seen corresponding path program 1 times [2024-11-12 08:31:09,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:09,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092116081] [2024-11-12 08:31:09,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:09,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:09,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:09,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092116081] [2024-11-12 08:31:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092116081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:09,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:09,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:31:09,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572062889] [2024-11-12 08:31:09,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:09,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:31:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:09,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:31:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:31:09,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-12 08:31:09,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:09,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:09,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-12 08:31:09,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:09,410 INFO L124 PetriNetUnfolderBase]: 687/1304 cut-off events. [2024-11-12 08:31:09,411 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-12 08:31:09,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2521 conditions, 1304 events. 687/1304 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6243 event pairs, 211 based on Foata normal form. 0/1211 useless extension candidates. Maximal degree in co-relation 2513. Up to 889 conditions per place. [2024-11-12 08:31:09,419 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2024-11-12 08:31:09,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 213 flow [2024-11-12 08:31:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:31:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:31:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-12 08:31:09,421 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-12 08:31:09,421 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 94 flow. Second operand 3 states and 82 transitions. [2024-11-12 08:31:09,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 213 flow [2024-11-12 08:31:09,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:31:09,423 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 103 flow [2024-11-12 08:31:09,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-11-12 08:31:09,424 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-11-12 08:31:09,424 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 103 flow [2024-11-12 08:31:09,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:09,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:09,425 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:09,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:31:09,425 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-12 08:31:09,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:09,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2101676173, now seen corresponding path program 1 times [2024-11-12 08:31:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:09,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326105215] [2024-11-12 08:31:09,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:09,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:09,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326105215] [2024-11-12 08:31:09,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326105215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:09,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:09,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:31:09,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852289286] [2024-11-12 08:31:09,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:09,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:31:09,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:09,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:31:09,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:31:09,586 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-12 08:31:09,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:09,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:09,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-12 08:31:09,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:09,932 INFO L124 PetriNetUnfolderBase]: 928/1728 cut-off events. [2024-11-12 08:31:09,932 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-12 08:31:09,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3489 conditions, 1728 events. 928/1728 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9003 event pairs, 405 based on Foata normal form. 12/1637 useless extension candidates. Maximal degree in co-relation 3479. Up to 1133 conditions per place. [2024-11-12 08:31:09,942 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 78 selfloop transitions, 7 changer transitions 0/94 dead transitions. [2024-11-12 08:31:09,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 94 transitions, 402 flow [2024-11-12 08:31:09,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:31:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:31:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-11-12 08:31:09,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-11-12 08:31:09,945 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 103 flow. Second operand 7 states and 176 transitions. [2024-11-12 08:31:09,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 94 transitions, 402 flow [2024-11-12 08:31:09,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 94 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:31:09,948 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 150 flow [2024-11-12 08:31:09,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-11-12 08:31:09,949 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-12 08:31:09,949 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 150 flow [2024-11-12 08:31:09,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:09,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:09,949 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:09,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:31:09,950 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-12 08:31:09,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:09,950 INFO L85 PathProgramCache]: Analyzing trace with hash 691943577, now seen corresponding path program 1 times [2024-11-12 08:31:09,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:09,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604707199] [2024-11-12 08:31:09,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604707199] [2024-11-12 08:31:10,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604707199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:10,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:10,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:31:10,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013456828] [2024-11-12 08:31:10,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:10,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:31:10,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:10,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:31:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:31:10,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-12 08:31:10,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:10,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:10,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-12 08:31:10,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:10,203 INFO L124 PetriNetUnfolderBase]: 756/1460 cut-off events. [2024-11-12 08:31:10,203 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-11-12 08:31:10,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3151 conditions, 1460 events. 756/1460 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7246 event pairs, 254 based on Foata normal form. 42/1462 useless extension candidates. Maximal degree in co-relation 3137. Up to 732 conditions per place. [2024-11-12 08:31:10,212 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 43 selfloop transitions, 3 changer transitions 3/59 dead transitions. [2024-11-12 08:31:10,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 283 flow [2024-11-12 08:31:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:31:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:31:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-12 08:31:10,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-12 08:31:10,217 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 150 flow. Second operand 3 states and 82 transitions. [2024-11-12 08:31:10,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 283 flow [2024-11-12 08:31:10,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:31:10,223 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 156 flow [2024-11-12 08:31:10,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-12 08:31:10,224 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-12 08:31:10,224 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 156 flow [2024-11-12 08:31:10,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:10,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:10,225 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:10,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:31:10,225 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-12 08:31:10,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:10,228 INFO L85 PathProgramCache]: Analyzing trace with hash 116028908, now seen corresponding path program 1 times [2024-11-12 08:31:10,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:10,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702252714] [2024-11-12 08:31:10,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:10,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:10,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:10,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702252714] [2024-11-12 08:31:10,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702252714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:10,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:10,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:31:10,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398091360] [2024-11-12 08:31:10,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:10,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:31:10,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:10,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:31:10,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:31:10,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-12 08:31:10,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:10,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:10,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-12 08:31:10,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:10,492 INFO L124 PetriNetUnfolderBase]: 412/908 cut-off events. [2024-11-12 08:31:10,492 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2024-11-12 08:31:10,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 908 events. 412/908 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3991 event pairs, 128 based on Foata normal form. 46/932 useless extension candidates. Maximal degree in co-relation 2007. Up to 410 conditions per place. [2024-11-12 08:31:10,497 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 39 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-12 08:31:10,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 276 flow [2024-11-12 08:31:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:31:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:31:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-12 08:31:10,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-11-12 08:31:10,498 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 156 flow. Second operand 3 states and 81 transitions. [2024-11-12 08:31:10,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 276 flow [2024-11-12 08:31:10,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:31:10,502 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 158 flow [2024-11-12 08:31:10,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-12 08:31:10,502 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-12 08:31:10,503 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 158 flow [2024-11-12 08:31:10,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:10,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:10,503 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:10,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:31:10,504 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-12 08:31:10,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:10,504 INFO L85 PathProgramCache]: Analyzing trace with hash -178224064, now seen corresponding path program 1 times [2024-11-12 08:31:10,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:10,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876002569] [2024-11-12 08:31:10,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:10,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 08:31:10,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50163599] [2024-11-12 08:31:10,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:10,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:31:10,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:31:10,547 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) [2024-11-12 08:31:10,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:31:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:10,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 08:31:10,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:31:10,900 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 [2024-11-12 08:31:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:11,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:31:11,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:11,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876002569] [2024-11-12 08:31:11,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 08:31:11,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50163599] [2024-11-12 08:31:11,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50163599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:11,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:11,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:31:11,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696177577] [2024-11-12 08:31:11,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:11,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:31:11,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:31:11,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:31:11,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-12 08:31:11,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:11,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:11,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-12 08:31:11,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:11,612 INFO L124 PetriNetUnfolderBase]: 476/1016 cut-off events. [2024-11-12 08:31:11,613 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-11-12 08:31:11,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 1016 events. 476/1016 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4358 event pairs, 94 based on Foata normal form. 0/991 useless extension candidates. Maximal degree in co-relation 2366. Up to 422 conditions per place. [2024-11-12 08:31:11,619 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 71 selfloop transitions, 9 changer transitions 11/103 dead transitions. [2024-11-12 08:31:11,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 515 flow [2024-11-12 08:31:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:31:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:31:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-11-12 08:31:11,621 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 08:31:11,621 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 158 flow. Second operand 9 states and 207 transitions. [2024-11-12 08:31:11,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 515 flow [2024-11-12 08:31:11,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:31:11,625 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 209 flow [2024-11-12 08:31:11,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=209, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2024-11-12 08:31:11,626 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-11-12 08:31:11,626 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 209 flow [2024-11-12 08:31:11,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:11,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:11,627 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:11,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 08:31:11,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:31:11,832 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-12 08:31:11,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:11,832 INFO L85 PathProgramCache]: Analyzing trace with hash -905102411, now seen corresponding path program 1 times [2024-11-12 08:31:11,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:11,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482759512] [2024-11-12 08:31:11,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:11,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:11,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:11,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482759512] [2024-11-12 08:31:11,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482759512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:11,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:11,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:31:11,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401313864] [2024-11-12 08:31:11,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:11,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:31:11,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:11,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:31:11,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:31:11,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-12 08:31:11,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:11,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:11,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-12 08:31:11,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:12,082 INFO L124 PetriNetUnfolderBase]: 482/1016 cut-off events. [2024-11-12 08:31:12,082 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-12 08:31:12,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2470 conditions, 1016 events. 482/1016 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4341 event pairs, 369 based on Foata normal form. 0/988 useless extension candidates. Maximal degree in co-relation 2450. Up to 828 conditions per place. [2024-11-12 08:31:12,088 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 36 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-11-12 08:31:12,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 48 transitions, 279 flow [2024-11-12 08:31:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:31:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:31:12,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-12 08:31:12,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-11-12 08:31:12,090 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 209 flow. Second operand 3 states and 64 transitions. [2024-11-12 08:31:12,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 48 transitions, 279 flow [2024-11-12 08:31:12,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 48 transitions, 269 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-12 08:31:12,094 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 197 flow [2024-11-12 08:31:12,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2024-11-12 08:31:12,095 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-11-12 08:31:12,095 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 197 flow [2024-11-12 08:31:12,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:12,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:12,097 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:12,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 08:31:12,097 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-12 08:31:12,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash 662089536, now seen corresponding path program 1 times [2024-11-12 08:31:12,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:12,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910330969] [2024-11-12 08:31:12,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:12,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:12,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:12,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910330969] [2024-11-12 08:31:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910330969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:12,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:12,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:31:12,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285030611] [2024-11-12 08:31:12,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:12,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:31:12,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:31:12,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:31:12,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-12 08:31:12,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:12,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:12,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-12 08:31:12,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:12,507 INFO L124 PetriNetUnfolderBase]: 513/1053 cut-off events. [2024-11-12 08:31:12,507 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-11-12 08:31:12,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2567 conditions, 1053 events. 513/1053 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4334 event pairs, 232 based on Foata normal form. 0/1021 useless extension candidates. Maximal degree in co-relation 2547. Up to 582 conditions per place. [2024-11-12 08:31:12,512 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 54 selfloop transitions, 11 changer transitions 5/79 dead transitions. [2024-11-12 08:31:12,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 424 flow [2024-11-12 08:31:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:31:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:31:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-11-12 08:31:12,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-11-12 08:31:12,514 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 197 flow. Second operand 6 states and 137 transitions. [2024-11-12 08:31:12,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 424 flow [2024-11-12 08:31:12,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:31:12,518 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 221 flow [2024-11-12 08:31:12,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2024-11-12 08:31:12,518 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-11-12 08:31:12,519 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 221 flow [2024-11-12 08:31:12,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:12,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:12,519 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:12,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 08:31:12,519 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-12 08:31:12,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash 13379856, now seen corresponding path program 1 times [2024-11-12 08:31:12,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:12,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669974517] [2024-11-12 08:31:12,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:12,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 08:31:12,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872775578] [2024-11-12 08:31:12,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:12,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:31:12,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:31:12,594 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) [2024-11-12 08:31:12,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:31:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:12,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-12 08:31:12,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:31:13,350 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 21 treesize of output 20 [2024-11-12 08:31:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:13,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:31:22,381 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 466 treesize of output 446 [2024-11-12 08:31:22,413 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2024-11-12 08:31:22,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 496 treesize of output 427 [2024-11-12 08:31:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:38,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:38,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669974517] [2024-11-12 08:31:38,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 08:31:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872775578] [2024-11-12 08:31:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872775578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:31:38,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:31:38,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2024-11-12 08:31:38,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694461622] [2024-11-12 08:31:38,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 08:31:38,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-12 08:31:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-12 08:31:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2024-11-12 08:31:39,590 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-12 08:31:39,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 221 flow. Second operand has 27 states, 27 states have (on average 13.37037037037037) internal successors, (361), 27 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:31:39,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:39,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-12 08:31:39,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:32:01,969 WARN L286 SmtUtils]: Spent 21.13s on a formula simplification. DAG size of input: 139 DAG size of output: 128 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-12 08:32:27,439 WARN L286 SmtUtils]: Spent 23.08s on a formula simplification. DAG size of input: 136 DAG size of output: 125 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-12 08:32:37,413 WARN L286 SmtUtils]: Spent 9.07s on a formula simplification. DAG size of input: 131 DAG size of output: 121 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)