./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 3061b6dc 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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:56:28,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:56:28,677 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:56:28,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:56:28,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:56:28,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:56:28,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:56:28,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:56:28,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:56:28,717 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:56:28,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:56:28,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:56:28,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:56:28,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:56:28,730 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:56:28,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:56:28,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:56:28,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:56:28,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:56:28,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:56:28,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:56:28,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:56:28,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:56:28,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:56:28,740 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:56:28,740 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:56:28,740 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:56:28,741 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:56:28,741 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:56:28,741 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:56:28,741 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:56:28,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:56:28,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:56:28,742 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:56:28,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:56:28,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:56:28,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:56:28,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:56:28,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:56:28,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:56:28,744 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:56:28,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:56:28,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2024-11-19 01:56:29,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:56:29,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:56:29,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:56:29,028 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:56:29,029 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:56:29,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-19 01:56:30,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:56:30,746 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:56:30,747 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-19 01:56:30,765 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8729bc2d1/abc7a8dd7506403d95c9bd06fcda1976/FLAG8452a2716 [2024-11-19 01:56:30,782 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8729bc2d1/abc7a8dd7506403d95c9bd06fcda1976 [2024-11-19 01:56:30,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:56:30,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:56:30,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:56:30,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:56:30,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:56:30,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:56:30" (1/1) ... [2024-11-19 01:56:30,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314488ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:30, skipping insertion in model container [2024-11-19 01:56:30,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:56:30" (1/1) ... [2024-11-19 01:56:30,849 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:56:31,238 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] [2024-11-19 01:56:31,248 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] [2024-11-19 01:56:31,251 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] [2024-11-19 01:56:31,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:56:31,276 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:56:31,330 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] [2024-11-19 01:56:31,333 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] [2024-11-19 01:56:31,335 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] [2024-11-19 01:56:31,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:56:31,381 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:56:31,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31 WrapperNode [2024-11-19 01:56:31,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:56:31,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:56:31,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:56:31,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:56:31,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,401 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,438 INFO L138 Inliner]: procedures = 168, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-11-19 01:56:31,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:56:31,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:56:31,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:56:31,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:56:31,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,456 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,481 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]. [2024-11-19 01:56:31,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,508 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:56:31,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:56:31,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:56:31,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:56:31,519 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (1/1) ... [2024-11-19 01:56:31,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:56:31,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:56:31,555 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) [2024-11-19 01:56:31,561 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 [2024-11-19 01:56:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:56:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:56:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 01:56:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 01:56:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 01:56:31,608 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 01:56:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 01:56:31,608 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 01:56:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:56:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:56:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 01:56:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 01:56:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 01:56:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:56:31,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 01:56:31,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 01:56:31,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-19 01:56:31,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-19 01:56:31,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:56:31,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:56:31,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 01:56:31,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 01:56:31,612 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 01:56:31,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:56:31,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:56:31,615 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:56:31,803 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:56:31,806 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:56:32,062 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:56:32,062 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:56:32,292 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:56:32,293 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 01:56:32,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:56:32 BoogieIcfgContainer [2024-11-19 01:56:32,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:56:32,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:56:32,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:56:32,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:56:32,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:56:30" (1/3) ... [2024-11-19 01:56:32,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b9dac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:56:32, skipping insertion in model container [2024-11-19 01:56:32,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:31" (2/3) ... [2024-11-19 01:56:32,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b9dac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:56:32, skipping insertion in model container [2024-11-19 01:56:32,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:56:32" (3/3) ... [2024-11-19 01:56:32,322 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-11-19 01:56:32,338 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:56:32,339 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-19 01:56:32,339 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:56:32,428 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:56:32,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 46 transitions, 106 flow [2024-11-19 01:56:32,486 INFO L124 PetriNetUnfolderBase]: 8/44 cut-off events. [2024-11-19 01:56:32,486 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:56:32,490 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. [2024-11-19 01:56:32,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 46 transitions, 106 flow [2024-11-19 01:56:32,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 42 transitions, 93 flow [2024-11-19 01:56:32,504 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:56:32,510 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;@62dd4479, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:56:32,510 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-19 01:56:32,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:56:32,524 INFO L124 PetriNetUnfolderBase]: 8/39 cut-off events. [2024-11-19 01:56:32,524 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 01:56:32,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:32,525 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:56:32,525 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 01:56:32,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:32,531 INFO L85 PathProgramCache]: Analyzing trace with hash 576897654, now seen corresponding path program 1 times [2024-11-19 01:56:32,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:32,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111802563] [2024-11-19 01:56:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:33,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111802563] [2024-11-19 01:56:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111802563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:33,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:33,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:56:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198959896] [2024-11-19 01:56:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:33,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:56:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:56:33,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:56:33,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-19 01:56:33,176 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) [2024-11-19 01:56:33,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:33,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-19 01:56:33,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:33,369 INFO L124 PetriNetUnfolderBase]: 392/721 cut-off events. [2024-11-19 01:56:33,369 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-19 01:56:33,372 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. [2024-11-19 01:56:33,379 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 26 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2024-11-19 01:56:33,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 137 flow [2024-11-19 01:56:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:56:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:56:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-19 01:56:33,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 01:56:33,395 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 93 flow. Second operand 3 states and 69 transitions. [2024-11-19 01:56:33,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 137 flow [2024-11-19 01:56:33,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 01:56:33,400 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 80 flow [2024-11-19 01:56:33,402 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} [2024-11-19 01:56:33,405 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2024-11-19 01:56:33,407 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 80 flow [2024-11-19 01:56:33,408 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) [2024-11-19 01:56:33,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:33,408 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:56:33,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:56:33,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 01:56:33,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash -220093088, now seen corresponding path program 1 times [2024-11-19 01:56:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:33,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851227921] [2024-11-19 01:56:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:33,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:33,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851227921] [2024-11-19 01:56:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851227921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:33,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:56:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538372129] [2024-11-19 01:56:33,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:33,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:56:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:56:33,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:56:33,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-19 01:56:33,498 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) [2024-11-19 01:56:33,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:33,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-19 01:56:33,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:33,688 INFO L124 PetriNetUnfolderBase]: 626/1167 cut-off events. [2024-11-19 01:56:33,689 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 01:56:33,695 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. [2024-11-19 01:56:33,701 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 42 selfloop transitions, 3 changer transitions 2/57 dead transitions. [2024-11-19 01:56:33,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 217 flow [2024-11-19 01:56:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:56:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:56:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-11-19 01:56:33,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-11-19 01:56:33,704 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 80 flow. Second operand 3 states and 90 transitions. [2024-11-19 01:56:33,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 217 flow [2024-11-19 01:56:33,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:33,709 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 94 flow [2024-11-19 01:56:33,710 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} [2024-11-19 01:56:33,710 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-11-19 01:56:33,711 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 94 flow [2024-11-19 01:56:33,711 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) [2024-11-19 01:56:33,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:33,712 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:56:33,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:56:33,713 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 01:56:33,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:33,714 INFO L85 PathProgramCache]: Analyzing trace with hash 703926712, now seen corresponding path program 1 times [2024-11-19 01:56:33,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:33,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377669723] [2024-11-19 01:56:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:33,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:33,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:33,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377669723] [2024-11-19 01:56:33,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377669723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:33,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:33,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:56:33,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616978047] [2024-11-19 01:56:33,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:33,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:56:33,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:33,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:56:33,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:56:33,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-19 01:56:33,891 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) [2024-11-19 01:56:33,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:33,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-19 01:56:33,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:34,112 INFO L124 PetriNetUnfolderBase]: 687/1304 cut-off events. [2024-11-19 01:56:34,114 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-19 01:56:34,117 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. [2024-11-19 01:56:34,123 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2024-11-19 01:56:34,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 213 flow [2024-11-19 01:56:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:56:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:56:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-19 01:56:34,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-19 01:56:34,126 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 94 flow. Second operand 3 states and 82 transitions. [2024-11-19 01:56:34,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 213 flow [2024-11-19 01:56:34,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:34,131 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 103 flow [2024-11-19 01:56:34,132 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} [2024-11-19 01:56:34,133 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-11-19 01:56:34,133 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 103 flow [2024-11-19 01:56:34,133 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) [2024-11-19 01:56:34,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:34,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:56:34,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:56:34,135 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 01:56:34,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2101676173, now seen corresponding path program 1 times [2024-11-19 01:56:34,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:34,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82924445] [2024-11-19 01:56:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:34,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:34,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82924445] [2024-11-19 01:56:34,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82924445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:34,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:34,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:56:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743999432] [2024-11-19 01:56:34,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:34,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:56:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:34,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:56:34,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:56:34,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-19 01:56:34,291 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) [2024-11-19 01:56:34,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:34,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-19 01:56:34,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:34,623 INFO L124 PetriNetUnfolderBase]: 928/1728 cut-off events. [2024-11-19 01:56:34,624 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-19 01:56:34,628 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. [2024-11-19 01:56:34,635 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 78 selfloop transitions, 7 changer transitions 0/94 dead transitions. [2024-11-19 01:56:34,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 94 transitions, 402 flow [2024-11-19 01:56:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:56:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:56:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-11-19 01:56:34,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-11-19 01:56:34,638 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 103 flow. Second operand 7 states and 176 transitions. [2024-11-19 01:56:34,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 94 transitions, 402 flow [2024-11-19 01:56:34,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 94 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:34,643 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 150 flow [2024-11-19 01:56:34,644 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} [2024-11-19 01:56:34,645 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-19 01:56:34,645 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 150 flow [2024-11-19 01:56:34,646 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) [2024-11-19 01:56:34,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:34,646 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:56:34,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:56:34,646 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 01:56:34,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash 691943577, now seen corresponding path program 1 times [2024-11-19 01:56:34,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:34,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124682698] [2024-11-19 01:56:34,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:34,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:34,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:34,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124682698] [2024-11-19 01:56:34,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124682698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:34,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:34,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:56:34,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464127825] [2024-11-19 01:56:34,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:34,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:56:34,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:34,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:56:34,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:56:34,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-19 01:56:34,694 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) [2024-11-19 01:56:34,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:34,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-19 01:56:34,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:34,898 INFO L124 PetriNetUnfolderBase]: 756/1460 cut-off events. [2024-11-19 01:56:34,898 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-11-19 01:56:34,902 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. [2024-11-19 01:56:34,907 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 43 selfloop transitions, 3 changer transitions 3/59 dead transitions. [2024-11-19 01:56:34,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 283 flow [2024-11-19 01:56:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:56:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:56:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-19 01:56:34,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-19 01:56:34,911 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 150 flow. Second operand 3 states and 82 transitions. [2024-11-19 01:56:34,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 283 flow [2024-11-19 01:56:34,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:34,914 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 156 flow [2024-11-19 01:56:34,915 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} [2024-11-19 01:56:34,917 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-19 01:56:34,920 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 156 flow [2024-11-19 01:56:34,920 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) [2024-11-19 01:56:34,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:34,920 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] [2024-11-19 01:56:34,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:56:34,920 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 01:56:34,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:34,921 INFO L85 PathProgramCache]: Analyzing trace with hash 116028908, now seen corresponding path program 1 times [2024-11-19 01:56:34,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:34,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024277223] [2024-11-19 01:56:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:35,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:35,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024277223] [2024-11-19 01:56:35,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024277223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:35,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:35,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:56:35,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399236045] [2024-11-19 01:56:35,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:35,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:56:35,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:35,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:56:35,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:56:35,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-19 01:56:35,033 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) [2024-11-19 01:56:35,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:35,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-19 01:56:35,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:35,162 INFO L124 PetriNetUnfolderBase]: 412/908 cut-off events. [2024-11-19 01:56:35,162 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2024-11-19 01:56:35,166 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. [2024-11-19 01:56:35,169 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 39 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-19 01:56:35,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 276 flow [2024-11-19 01:56:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:56:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:56:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-19 01:56:35,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-11-19 01:56:35,172 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 156 flow. Second operand 3 states and 81 transitions. [2024-11-19 01:56:35,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 276 flow [2024-11-19 01:56:35,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:56:35,178 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 158 flow [2024-11-19 01:56:35,178 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} [2024-11-19 01:56:35,179 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-19 01:56:35,180 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 158 flow [2024-11-19 01:56:35,180 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) [2024-11-19 01:56:35,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:35,180 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] [2024-11-19 01:56:35,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:56:35,180 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 01:56:35,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash -178224064, now seen corresponding path program 1 times [2024-11-19 01:56:35,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:35,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707785991] [2024-11-19 01:56:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:35,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 01:56:35,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453136026] [2024-11-19 01:56:35,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:35,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:56:35,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:56:35,235 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) [2024-11-19 01:56:35,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:56:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:35,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 01:56:35,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:56:35,590 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 [2024-11-19 01:56:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:35,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:56:35,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707785991] [2024-11-19 01:56:35,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 01:56:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453136026] [2024-11-19 01:56:35,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453136026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:35,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:35,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:56:35,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518325193] [2024-11-19 01:56:35,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:35,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:56:35,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:56:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:56:35,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-19 01:56:35,898 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) [2024-11-19 01:56:35,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:35,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-19 01:56:35,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:36,243 INFO L124 PetriNetUnfolderBase]: 476/1016 cut-off events. [2024-11-19 01:56:36,243 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-11-19 01:56:36,245 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. [2024-11-19 01:56:36,248 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 71 selfloop transitions, 9 changer transitions 11/103 dead transitions. [2024-11-19 01:56:36,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 515 flow [2024-11-19 01:56:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:56:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:56:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-11-19 01:56:36,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 01:56:36,250 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 158 flow. Second operand 9 states and 207 transitions. [2024-11-19 01:56:36,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 515 flow [2024-11-19 01:56:36,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:36,253 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 209 flow [2024-11-19 01:56:36,253 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} [2024-11-19 01:56:36,254 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-11-19 01:56:36,254 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 209 flow [2024-11-19 01:56:36,255 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) [2024-11-19 01:56:36,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:36,255 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] [2024-11-19 01:56:36,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:56:36,459 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 [2024-11-19 01:56:36,460 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 01:56:36,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:36,460 INFO L85 PathProgramCache]: Analyzing trace with hash -905102411, now seen corresponding path program 1 times [2024-11-19 01:56:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:36,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340954846] [2024-11-19 01:56:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:36,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:36,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:36,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340954846] [2024-11-19 01:56:36,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340954846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:36,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:36,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:56:36,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897140412] [2024-11-19 01:56:36,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:36,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:56:36,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:36,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:56:36,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:56:36,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-19 01:56:36,577 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) [2024-11-19 01:56:36,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:36,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-19 01:56:36,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:36,706 INFO L124 PetriNetUnfolderBase]: 482/1016 cut-off events. [2024-11-19 01:56:36,706 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-19 01:56:36,709 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. [2024-11-19 01:56:36,711 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 36 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-11-19 01:56:36,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 48 transitions, 279 flow [2024-11-19 01:56:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:56:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:56:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-19 01:56:36,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-11-19 01:56:36,713 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 209 flow. Second operand 3 states and 64 transitions. [2024-11-19 01:56:36,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 48 transitions, 279 flow [2024-11-19 01:56:36,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 48 transitions, 269 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 01:56:36,716 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 197 flow [2024-11-19 01:56:36,716 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} [2024-11-19 01:56:36,720 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-11-19 01:56:36,720 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 197 flow [2024-11-19 01:56:36,720 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) [2024-11-19 01:56:36,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:36,721 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] [2024-11-19 01:56:36,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:56:36,721 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 01:56:36,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:36,722 INFO L85 PathProgramCache]: Analyzing trace with hash 662089536, now seen corresponding path program 1 times [2024-11-19 01:56:36,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:36,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20278302] [2024-11-19 01:56:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:36,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:56:36,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:36,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20278302] [2024-11-19 01:56:36,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20278302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:36,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:36,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:56:36,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37497260] [2024-11-19 01:56:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:36,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:56:36,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:36,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:56:36,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:56:36,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-19 01:56:36,887 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) [2024-11-19 01:56:36,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:36,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-19 01:56:36,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:37,126 INFO L124 PetriNetUnfolderBase]: 513/1053 cut-off events. [2024-11-19 01:56:37,126 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-11-19 01:56:37,129 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. [2024-11-19 01:56:37,132 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 54 selfloop transitions, 11 changer transitions 5/79 dead transitions. [2024-11-19 01:56:37,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 424 flow [2024-11-19 01:56:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:56:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:56:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-11-19 01:56:37,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-11-19 01:56:37,133 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 197 flow. Second operand 6 states and 137 transitions. [2024-11-19 01:56:37,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 424 flow [2024-11-19 01:56:37,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:37,137 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 221 flow [2024-11-19 01:56:37,137 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} [2024-11-19 01:56:37,137 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-11-19 01:56:37,138 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 221 flow [2024-11-19 01:56:37,138 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) [2024-11-19 01:56:37,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:37,138 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] [2024-11-19 01:56:37,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:56:37,138 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 01:56:37,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash 13379856, now seen corresponding path program 1 times [2024-11-19 01:56:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:37,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247706673] [2024-11-19 01:56:37,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:37,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 01:56:37,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466787849] [2024-11-19 01:56:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:37,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:56:37,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:56:37,272 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) [2024-11-19 01:56:37,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:56:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:37,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-19 01:56:37,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:56:38,040 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 [2024-11-19 01:56:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:38,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:56:47,549 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 [2024-11-19 01:56:47,583 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2024-11-19 01:56:47,583 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 [2024-11-19 01:57:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:03,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:57:03,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247706673] [2024-11-19 01:57:03,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 01:57:03,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466787849] [2024-11-19 01:57:03,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466787849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:57:03,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:57:03,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2024-11-19 01:57:03,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175707695] [2024-11-19 01:57:03,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 01:57:03,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 01:57:03,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:57:03,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 01:57:03,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2024-11-19 01:57:04,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-19 01:57:04,514 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) [2024-11-19 01:57:04,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:57:04,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-19 01:57:04,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:57:27,238 WARN L286 SmtUtils]: Spent 21.37s 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) [2024-11-19 01:57:56,142 WARN L286 SmtUtils]: Spent 26.43s 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)