./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/reorder_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/reorder_5.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 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:04:52,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:04:52,523 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:04:52,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:04:52,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:04:52,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:04:52,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:04:52,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:04:52,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:04:52,561 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:04:52,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:04:52,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:04:52,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:04:52,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:04:52,563 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:04:52,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:04:52,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:04:52,564 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:04:52,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:04:52,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:04:52,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:04:52,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:04:52,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:04:52,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:04:52,567 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:04:52,567 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:04:52,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:04:52,568 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:04:52,568 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:04:52,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:04:52,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:04:52,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:04:52,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:04:52,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:04:52,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:04:52,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:04:52,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:04:52,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:04:52,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:04:52,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:04:52,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:04:52,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:04:52,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd [2024-11-16 19:04:52,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:04:52,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:04:52,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:04:52,868 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:04:52,869 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:04:52,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/reorder_5.i [2024-11-16 19:04:54,381 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:04:54,650 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:04:54,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i [2024-11-16 19:04:54,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3586c7b1a/642319de7e96463f9359e4d9d8cbd675/FLAGbb83add57 [2024-11-16 19:04:54,690 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3586c7b1a/642319de7e96463f9359e4d9d8cbd675 [2024-11-16 19:04:54,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:04:54,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:04:54,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:04:54,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:04:54,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:04:54,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:04:54" (1/1) ... [2024-11-16 19:04:54,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b9d1cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:54, skipping insertion in model container [2024-11-16 19:04:54,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:04:54" (1/1) ... [2024-11-16 19:04:54,761 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:04:55,399 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/reorder_5.i[59755,59768] [2024-11-16 19:04:55,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:04:55,414 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:04:55,463 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/reorder_5.i[59755,59768] [2024-11-16 19:04:55,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:04:55,627 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:04:55,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55 WrapperNode [2024-11-16 19:04:55,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:04:55,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:04:55,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:04:55,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:04:55,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,691 INFO L138 Inliner]: procedures = 371, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 117 [2024-11-16 19:04:55,692 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:04:55,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:04:55,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:04:55,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:04:55,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,741 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-16 19:04:55,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,754 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:04:55,770 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:04:55,773 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:04:55,773 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:04:55,774 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (1/1) ... [2024-11-16 19:04:55,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:04:55,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:55,812 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) [2024-11-16 19:04:55,815 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 [2024-11-16 19:04:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:04:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 19:04:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 19:04:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:04:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:04:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:04:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 19:04:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-11-16 19:04:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-11-16 19:04:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:04:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:04:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 19:04:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:04:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-11-16 19:04:55,867 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-11-16 19:04:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:04:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:04:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:04:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:04:55,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:04:55,871 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:04:56,025 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:04:56,028 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:04:56,215 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1252: havoc main_~#setPool~0#1.base, main_~#setPool~0#1.offset; [2024-11-16 19:04:56,216 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1252-1: SUMMARY for call ULTIMATE.dealloc(main_~#setPool~0#1.base, main_~#setPool~0#1.offset); srcloc: null [2024-11-16 19:04:56,216 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1253: havoc main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset; [2024-11-16 19:04:56,216 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1253-1: SUMMARY for call ULTIMATE.dealloc(main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset); srcloc: null [2024-11-16 19:04:56,218 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:04:56,218 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:04:56,396 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:04:56,397 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:04:56,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:04:56 BoogieIcfgContainer [2024-11-16 19:04:56,398 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:04:56,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:04:56,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:04:56,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:04:56,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:04:54" (1/3) ... [2024-11-16 19:04:56,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c201c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:04:56, skipping insertion in model container [2024-11-16 19:04:56,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:55" (2/3) ... [2024-11-16 19:04:56,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c201c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:04:56, skipping insertion in model container [2024-11-16 19:04:56,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:04:56" (3/3) ... [2024-11-16 19:04:56,408 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2024-11-16 19:04:56,426 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:04:56,429 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:04:56,429 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:04:56,480 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-16 19:04:56,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 45 transitions, 110 flow [2024-11-16 19:04:56,569 INFO L124 PetriNetUnfolderBase]: 24/114 cut-off events. [2024-11-16 19:04:56,569 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-16 19:04:56,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 114 events. 24/114 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 419 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2024-11-16 19:04:56,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 45 transitions, 110 flow [2024-11-16 19:04:56,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 43 transitions, 100 flow [2024-11-16 19:04:56,591 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:04:56,600 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;@65ebfe24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:04:56,601 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:04:56,611 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:04:56,613 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2024-11-16 19:04:56,614 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:04:56,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:56,615 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-16 19:04:56,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:04:56,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:56,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1883512856, now seen corresponding path program 1 times [2024-11-16 19:04:56,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:56,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605769379] [2024-11-16 19:04:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:56,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:04:56,780 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:04:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:04:56,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:04:56,850 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:04:56,851 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-16 19:04:56,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-16 19:04:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-16 19:04:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-16 19:04:56,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:04:56,855 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-16 19:04:56,859 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 19:04:56,860 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-16 19:04:56,895 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-16 19:04:56,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 63 transitions, 170 flow [2024-11-16 19:04:56,982 INFO L124 PetriNetUnfolderBase]: 107/391 cut-off events. [2024-11-16 19:04:56,985 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-16 19:04:56,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 391 events. 107/391 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1904 event pairs, 2 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 245. Up to 32 conditions per place. [2024-11-16 19:04:56,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 63 transitions, 170 flow [2024-11-16 19:04:56,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 63 transitions, 170 flow [2024-11-16 19:04:56,996 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:04:56,998 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;@65ebfe24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:04:56,999 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:04:57,009 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:04:57,009 INFO L124 PetriNetUnfolderBase]: 12/78 cut-off events. [2024-11-16 19:04:57,010 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2024-11-16 19:04:57,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:57,010 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:04:57,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:04:57,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:57,011 INFO L85 PathProgramCache]: Analyzing trace with hash 390080693, now seen corresponding path program 1 times [2024-11-16 19:04:57,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:57,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360851446] [2024-11-16 19:04:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:57,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:57,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:57,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360851446] [2024-11-16 19:04:57,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360851446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:04:57,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:04:57,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:04:57,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120232912] [2024-11-16 19:04:57,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:04:57,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:04:57,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:57,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:04:57,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:04:57,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-11-16 19:04:57,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 170 flow. Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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) [2024-11-16 19:04:57,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:57,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-11-16 19:04:57,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:59,930 INFO L124 PetriNetUnfolderBase]: 16018/27491 cut-off events. [2024-11-16 19:04:59,930 INFO L125 PetriNetUnfolderBase]: For 2769/2769 co-relation queries the response was YES. [2024-11-16 19:05:00,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51310 conditions, 27491 events. 16018/27491 cut-off events. For 2769/2769 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 230910 event pairs, 14603 based on Foata normal form. 4052/29979 useless extension candidates. Maximal degree in co-relation 22063. Up to 22123 conditions per place. [2024-11-16 19:05:00,261 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 36 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2024-11-16 19:05:00,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 230 flow [2024-11-16 19:05:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:05:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:05:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2024-11-16 19:05:00,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-16 19:05:00,274 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 170 flow. Second operand 2 states and 84 transitions. [2024-11-16 19:05:00,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 230 flow [2024-11-16 19:05:00,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:05:00,286 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 158 flow [2024-11-16 19:05:00,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-11-16 19:05:00,291 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-16 19:05:00,291 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 158 flow [2024-11-16 19:05:00,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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) [2024-11-16 19:05:00,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:00,292 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-16 19:05:00,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:05:00,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:05:00,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1677068497, now seen corresponding path program 1 times [2024-11-16 19:05:00,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:00,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124952109] [2024-11-16 19:05:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:00,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:05:00,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:05:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:05:00,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:05:00,370 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:05:00,371 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-16 19:05:00,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-16 19:05:00,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-16 19:05:00,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-16 19:05:00,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-16 19:05:00,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:05:00,372 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-16 19:05:00,373 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 19:05:00,373 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-16 19:05:00,397 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-11-16 19:05:00,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 81 transitions, 234 flow [2024-11-16 19:05:00,476 INFO L124 PetriNetUnfolderBase]: 496/1394 cut-off events. [2024-11-16 19:05:00,477 INFO L125 PetriNetUnfolderBase]: For 419/423 co-relation queries the response was YES. [2024-11-16 19:05:00,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 1394 events. 496/1394 cut-off events. For 419/423 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8281 event pairs, 64 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 918. Up to 192 conditions per place. [2024-11-16 19:05:00,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 81 transitions, 234 flow [2024-11-16 19:05:00,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 81 transitions, 234 flow [2024-11-16 19:05:00,492 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:05:00,493 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;@65ebfe24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:05:00,493 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-16 19:05:00,497 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:05:00,498 INFO L124 PetriNetUnfolderBase]: 12/78 cut-off events. [2024-11-16 19:05:00,498 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2024-11-16 19:05:00,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:00,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:00,498 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-16 19:05:00,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:00,499 INFO L85 PathProgramCache]: Analyzing trace with hash 791034396, now seen corresponding path program 1 times [2024-11-16 19:05:00,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:00,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728451977] [2024-11-16 19:05:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:00,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:00,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:00,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728451977] [2024-11-16 19:05:00,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728451977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:00,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:00,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:05:00,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407325476] [2024-11-16 19:05:00,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:00,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:05:00,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:00,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:05:00,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:05:00,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 81 [2024-11-16 19:05:00,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 234 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 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) [2024-11-16 19:05:00,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:00,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 81 [2024-11-16 19:05:00,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand