./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 c7c6ca5d 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-?-c7c6ca5-m [2024-11-09 02:52:23,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:52:23,670 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:52:23,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:52:23,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:52:23,711 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:52:23,712 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:52:23,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:52:23,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:52:23,713 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:52:23,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:52:23,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:52:23,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:52:23,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:52:23,719 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:52:23,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:52:23,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:52:23,720 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:52:23,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:52:23,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:52:23,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:52:23,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:52:23,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:52:23,721 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:52:23,722 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:52:23,724 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:52:23,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:52:23,724 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:52:23,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:52:23,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:52:23,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:52:23,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:52:23,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:52:23,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:52:23,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:52:23,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:52:23,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:52:23,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:52:23,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:52:23,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:52:23,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:52:23,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:52:23,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2024-11-09 02:52:23,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:52:24,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:52:24,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:52:24,027 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:52:24,027 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:52:24,028 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-09 02:52:25,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:52:25,701 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:52:25,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-09 02:52:25,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286959718/421f62f865cc4e40b7f2ec6c410dcad4/FLAG69de87032 [2024-11-09 02:52:25,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286959718/421f62f865cc4e40b7f2ec6c410dcad4 [2024-11-09 02:52:25,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:52:25,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:52:25,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:52:25,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:52:25,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:52:25,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:25" (1/1) ... [2024-11-09 02:52:25,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d2690e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:25, skipping insertion in model container [2024-11-09 02:52:25,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:25" (1/1) ... [2024-11-09 02:52:25,809 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:52:26,120 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] [2024-11-09 02:52:26,130 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] [2024-11-09 02:52:26,136 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] [2024-11-09 02:52:26,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:52:26,161 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:52:26,215 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] [2024-11-09 02:52:26,217 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] [2024-11-09 02:52:26,218 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] [2024-11-09 02:52:26,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:52:26,268 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:52:26,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26 WrapperNode [2024-11-09 02:52:26,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:52:26,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:52:26,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:52:26,272 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:52:26,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,326 INFO L138 Inliner]: procedures = 168, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-11-09 02:52:26,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:52:26,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:52:26,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:52:26,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:52:26,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,342 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,370 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]. [2024-11-09 02:52:26,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:52:26,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:52:26,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:52:26,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:52:26,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (1/1) ... [2024-11-09 02:52:26,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:52:26,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:26,439 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) [2024-11-09 02:52:26,443 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 [2024-11-09 02:52:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:52:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:52:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:52:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 02:52:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 02:52:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 02:52:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 02:52:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 02:52:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:52:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:52:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:52:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 02:52:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:52:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:52:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-09 02:52:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-09 02:52:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-09 02:52:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-09 02:52:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:52:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:52:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:52:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 02:52:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:52:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:52:26,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:52:26,488 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:52:26,639 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:52:26,640 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:52:26,935 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:52:26,935 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:52:27,170 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:52:27,171 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 02:52:27,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:27 BoogieIcfgContainer [2024-11-09 02:52:27,171 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:52:27,173 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:52:27,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:52:27,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:52:27,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:52:25" (1/3) ... [2024-11-09 02:52:27,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c38c0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:27, skipping insertion in model container [2024-11-09 02:52:27,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:26" (2/3) ... [2024-11-09 02:52:27,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c38c0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:27, skipping insertion in model container [2024-11-09 02:52:27,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:27" (3/3) ... [2024-11-09 02:52:27,180 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-11-09 02:52:27,197 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:52:27,197 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-09 02:52:27,197 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:52:27,256 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:52:27,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 46 transitions, 106 flow [2024-11-09 02:52:27,328 INFO L124 PetriNetUnfolderBase]: 8/44 cut-off events. [2024-11-09 02:52:27,328 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:52:27,331 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. [2024-11-09 02:52:27,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 46 transitions, 106 flow [2024-11-09 02:52:27,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 42 transitions, 93 flow [2024-11-09 02:52:27,352 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:52:27,361 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;@5d9af9c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:52:27,361 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-09 02:52:27,381 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:52:27,382 INFO L124 PetriNetUnfolderBase]: 8/39 cut-off events. [2024-11-09 02:52:27,383 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 02:52:27,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:27,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:27,385 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:52:27,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash 576897654, now seen corresponding path program 1 times [2024-11-09 02:52:27,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:27,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924151735] [2024-11-09 02:52:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:27,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:27,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:27,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924151735] [2024-11-09 02:52:27,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924151735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:52:27,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:52:27,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:52:27,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660922749] [2024-11-09 02:52:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:27,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:52:27,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:28,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:52:28,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:52:28,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:52:28,043 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) [2024-11-09 02:52:28,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:28,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:52:28,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:28,253 INFO L124 PetriNetUnfolderBase]: 392/721 cut-off events. [2024-11-09 02:52:28,256 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-09 02:52:28,259 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. [2024-11-09 02:52:28,267 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 26 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2024-11-09 02:52:28,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 137 flow [2024-11-09 02:52:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:52:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:52:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-09 02:52:28,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:52:28,283 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 93 flow. Second operand 3 states and 69 transitions. [2024-11-09 02:52:28,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 137 flow [2024-11-09 02:52:28,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:52:28,288 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 80 flow [2024-11-09 02:52:28,290 INFO L260 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} [2024-11-09 02:52:28,296 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2024-11-09 02:52:28,296 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 80 flow [2024-11-09 02:52:28,296 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) [2024-11-09 02:52:28,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:28,297 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:28,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:52:28,298 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:52:28,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:28,299 INFO L85 PathProgramCache]: Analyzing trace with hash -220093088, now seen corresponding path program 1 times [2024-11-09 02:52:28,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:28,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68964522] [2024-11-09 02:52:28,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:28,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:28,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:28,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68964522] [2024-11-09 02:52:28,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68964522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:52:28,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:52:28,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:52:28,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720578936] [2024-11-09 02:52:28,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:28,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:52:28,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:28,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:52:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:52:28,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-09 02:52:28,406 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) [2024-11-09 02:52:28,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:28,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-09 02:52:28,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:28,699 INFO L124 PetriNetUnfolderBase]: 626/1167 cut-off events. [2024-11-09 02:52:28,700 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 02:52:28,705 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. [2024-11-09 02:52:28,710 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 42 selfloop transitions, 3 changer transitions 2/57 dead transitions. [2024-11-09 02:52:28,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 217 flow [2024-11-09 02:52:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:52:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:52:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-11-09 02:52:28,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-11-09 02:52:28,712 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 80 flow. Second operand 3 states and 90 transitions. [2024-11-09 02:52:28,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 217 flow [2024-11-09 02:52:28,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:52:28,716 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 94 flow [2024-11-09 02:52:28,717 INFO L260 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} [2024-11-09 02:52:28,718 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-11-09 02:52:28,719 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 94 flow [2024-11-09 02:52:28,719 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) [2024-11-09 02:52:28,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:28,719 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:28,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:52:28,720 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:52:28,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash 703926712, now seen corresponding path program 1 times [2024-11-09 02:52:28,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:28,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947487400] [2024-11-09 02:52:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:28,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:28,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947487400] [2024-11-09 02:52:28,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947487400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:52:28,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:52:28,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:52:28,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096005474] [2024-11-09 02:52:28,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:28,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:52:28,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:28,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:52:28,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:52:28,859 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:52:28,860 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) [2024-11-09 02:52:28,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:28,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:52:28,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:29,042 INFO L124 PetriNetUnfolderBase]: 687/1304 cut-off events. [2024-11-09 02:52:29,043 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-09 02:52:29,047 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. [2024-11-09 02:52:29,053 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2024-11-09 02:52:29,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 213 flow [2024-11-09 02:52:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:52:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:52:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-09 02:52:29,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-09 02:52:29,056 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 94 flow. Second operand 3 states and 82 transitions. [2024-11-09 02:52:29,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 213 flow [2024-11-09 02:52:29,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:52:29,061 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 103 flow [2024-11-09 02:52:29,062 INFO L260 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} [2024-11-09 02:52:29,062 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-11-09 02:52:29,063 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 103 flow [2024-11-09 02:52:29,063 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) [2024-11-09 02:52:29,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:29,064 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:29,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:52:29,064 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:52:29,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:29,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2101676173, now seen corresponding path program 1 times [2024-11-09 02:52:29,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:29,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42553880] [2024-11-09 02:52:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:29,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:29,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:29,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42553880] [2024-11-09 02:52:29,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42553880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:52:29,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:52:29,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:52:29,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350573092] [2024-11-09 02:52:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:29,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:52:29,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:52:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:52:29,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:52:29,214 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) [2024-11-09 02:52:29,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:29,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:52:29,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:29,518 INFO L124 PetriNetUnfolderBase]: 928/1728 cut-off events. [2024-11-09 02:52:29,518 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-09 02:52:29,522 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. [2024-11-09 02:52:29,529 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 78 selfloop transitions, 7 changer transitions 0/94 dead transitions. [2024-11-09 02:52:29,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 94 transitions, 402 flow [2024-11-09 02:52:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:52:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:52:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-11-09 02:52:29,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-11-09 02:52:29,533 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 103 flow. Second operand 7 states and 176 transitions. [2024-11-09 02:52:29,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 94 transitions, 402 flow [2024-11-09 02:52:29,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 94 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:52:29,537 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 150 flow [2024-11-09 02:52:29,537 INFO L260 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} [2024-11-09 02:52:29,538 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-09 02:52:29,538 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 150 flow [2024-11-09 02:52:29,538 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) [2024-11-09 02:52:29,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:29,538 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:29,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:52:29,539 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:52:29,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash 691943577, now seen corresponding path program 1 times [2024-11-09 02:52:29,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:29,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561194581] [2024-11-09 02:52:29,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:29,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:29,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:29,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561194581] [2024-11-09 02:52:29,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561194581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:52:29,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:52:29,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:52:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038262824] [2024-11-09 02:52:29,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:29,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:52:29,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:52:29,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:52:29,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:52:29,594 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) [2024-11-09 02:52:29,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:29,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:52:29,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:29,787 INFO L124 PetriNetUnfolderBase]: 756/1460 cut-off events. [2024-11-09 02:52:29,787 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-11-09 02:52:29,791 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. [2024-11-09 02:52:29,796 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 43 selfloop transitions, 3 changer transitions 3/59 dead transitions. [2024-11-09 02:52:29,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 283 flow [2024-11-09 02:52:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:52:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:52:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-09 02:52:29,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-09 02:52:29,798 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 150 flow. Second operand 3 states and 82 transitions. [2024-11-09 02:52:29,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 283 flow [2024-11-09 02:52:29,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:52:29,804 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 156 flow [2024-11-09 02:52:29,805 INFO L260 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} [2024-11-09 02:52:29,806 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-09 02:52:29,809 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 156 flow [2024-11-09 02:52:29,809 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) [2024-11-09 02:52:29,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:29,809 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:29,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:52:29,810 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:52:29,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash 116028908, now seen corresponding path program 1 times [2024-11-09 02:52:29,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:29,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195167762] [2024-11-09 02:52:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:29,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:29,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:29,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195167762] [2024-11-09 02:52:29,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195167762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:52:29,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:52:29,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:52:29,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529607199] [2024-11-09 02:52:29,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:29,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:52:29,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:52:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:52:29,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-09 02:52:29,922 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) [2024-11-09 02:52:29,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:29,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-09 02:52:29,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:30,051 INFO L124 PetriNetUnfolderBase]: 412/908 cut-off events. [2024-11-09 02:52:30,052 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2024-11-09 02:52:30,054 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. [2024-11-09 02:52:30,057 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 39 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-09 02:52:30,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 276 flow [2024-11-09 02:52:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:52:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:52:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-09 02:52:30,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-11-09 02:52:30,059 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 156 flow. Second operand 3 states and 81 transitions. [2024-11-09 02:52:30,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 276 flow [2024-11-09 02:52:30,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:52:30,064 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 158 flow [2024-11-09 02:52:30,065 INFO L260 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} [2024-11-09 02:52:30,066 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-09 02:52:30,067 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 158 flow [2024-11-09 02:52:30,067 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) [2024-11-09 02:52:30,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:30,067 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:30,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:52:30,068 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:52:30,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash -178224064, now seen corresponding path program 1 times [2024-11-09 02:52:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:30,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171512373] [2024-11-09 02:52:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:30,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 02:52:30,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058920614] [2024-11-09 02:52:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:30,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:30,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:30,126 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) [2024-11-09 02:52:30,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:52:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:30,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 02:52:30,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:30,499 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 [2024-11-09 02:52:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:30,805 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:52:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171512373] [2024-11-09 02:52:30,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 02:52:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058920614] [2024-11-09 02:52:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058920614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:52:30,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:52:30,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 02:52:30,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774248373] [2024-11-09 02:52:30,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:30,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:52:30,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:30,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:52:30,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:52:30,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:52:30,843 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) [2024-11-09 02:52:30,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:30,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:52:30,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:31,174 INFO L124 PetriNetUnfolderBase]: 476/1016 cut-off events. [2024-11-09 02:52:31,175 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-11-09 02:52:31,177 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. [2024-11-09 02:52:31,180 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 71 selfloop transitions, 9 changer transitions 11/103 dead transitions. [2024-11-09 02:52:31,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 515 flow [2024-11-09 02:52:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:52:31,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:52:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-11-09 02:52:31,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:52:31,181 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 158 flow. Second operand 9 states and 207 transitions. [2024-11-09 02:52:31,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 515 flow [2024-11-09 02:52:31,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:52:31,186 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 209 flow [2024-11-09 02:52:31,186 INFO L260 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} [2024-11-09 02:52:31,186 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-11-09 02:52:31,186 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 209 flow [2024-11-09 02:52:31,187 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) [2024-11-09 02:52:31,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:31,187 INFO L204 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] [2024-11-09 02:52:31,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:52:31,391 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 [2024-11-09 02:52:31,393 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:52:31,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:31,393 INFO L85 PathProgramCache]: Analyzing trace with hash -905102411, now seen corresponding path program 1 times [2024-11-09 02:52:31,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:31,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849156066] [2024-11-09 02:52:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:31,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:31,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:31,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849156066] [2024-11-09 02:52:31,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849156066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:52:31,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:52:31,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:52:31,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500356824] [2024-11-09 02:52:31,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:31,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:52:31,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:31,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:52:31,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:52:31,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-09 02:52:31,498 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) [2024-11-09 02:52:31,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:31,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-09 02:52:31,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:31,635 INFO L124 PetriNetUnfolderBase]: 482/1016 cut-off events. [2024-11-09 02:52:31,635 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-09 02:52:31,637 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. [2024-11-09 02:52:31,640 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 36 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-11-09 02:52:31,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 48 transitions, 279 flow [2024-11-09 02:52:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:52:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:52:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-09 02:52:31,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-11-09 02:52:31,641 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 209 flow. Second operand 3 states and 64 transitions. [2024-11-09 02:52:31,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 48 transitions, 279 flow [2024-11-09 02:52:31,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 48 transitions, 269 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 02:52:31,646 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 197 flow [2024-11-09 02:52:31,647 INFO L260 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} [2024-11-09 02:52:31,649 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-11-09 02:52:31,649 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 197 flow [2024-11-09 02:52:31,650 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) [2024-11-09 02:52:31,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:31,650 INFO L204 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] [2024-11-09 02:52:31,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:52:31,651 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:52:31,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:31,651 INFO L85 PathProgramCache]: Analyzing trace with hash 662089536, now seen corresponding path program 1 times [2024-11-09 02:52:31,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:31,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752395125] [2024-11-09 02:52:31,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:31,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:52:31,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:31,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752395125] [2024-11-09 02:52:31,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752395125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:52:31,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:52:31,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:52:31,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790957650] [2024-11-09 02:52:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:31,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:52:31,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:31,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:52:31,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:52:31,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:52:31,795 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) [2024-11-09 02:52:31,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:31,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:52:31,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:32,034 INFO L124 PetriNetUnfolderBase]: 513/1053 cut-off events. [2024-11-09 02:52:32,035 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-11-09 02:52:32,037 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. [2024-11-09 02:52:32,040 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 54 selfloop transitions, 11 changer transitions 5/79 dead transitions. [2024-11-09 02:52:32,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 424 flow [2024-11-09 02:52:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:52:32,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:52:32,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-11-09 02:52:32,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-11-09 02:52:32,042 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 197 flow. Second operand 6 states and 137 transitions. [2024-11-09 02:52:32,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 424 flow [2024-11-09 02:52:32,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:52:32,045 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 221 flow [2024-11-09 02:52:32,045 INFO L260 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} [2024-11-09 02:52:32,045 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-11-09 02:52:32,046 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 221 flow [2024-11-09 02:52:32,046 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) [2024-11-09 02:52:32,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:32,046 INFO L204 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] [2024-11-09 02:52:32,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:52:32,047 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:52:32,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:32,047 INFO L85 PathProgramCache]: Analyzing trace with hash 13379856, now seen corresponding path program 1 times [2024-11-09 02:52:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:32,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602786145] [2024-11-09 02:52:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:32,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 02:52:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933157057] [2024-11-09 02:52:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:32,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:32,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:32,154 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) [2024-11-09 02:52:32,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:52:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:32,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 02:52:32,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:32,890 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 [2024-11-09 02:52:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:33,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:41,322 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 [2024-11-09 02:52:41,346 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2024-11-09 02:52:41,346 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 [2024-11-09 02:52:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:57,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:57,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602786145] [2024-11-09 02:52:57,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 02:52:57,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933157057] [2024-11-09 02:52:57,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933157057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:57,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:52:57,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2024-11-09 02:52:57,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799497900] [2024-11-09 02:52:57,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:57,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 02:52:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 02:52:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2024-11-09 02:52:58,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-09 02:52:58,565 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) [2024-11-09 02:52:58,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:58,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-09 02:52:58,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:53:31,246 WARN L286 SmtUtils]: Spent 31.48s 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) [2024-11-09 02:53:53,191 WARN L286 SmtUtils]: Spent 19.64s 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)