./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/twostage_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/twostage_3.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 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:08:24,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:08:24,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:08:24,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:08:24,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:08:24,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:08:24,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:08:24,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:08:24,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:08:24,140 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:08:24,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:08:24,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:08:24,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:08:24,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:08:24,143 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:08:24,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:08:24,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:08:24,144 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:08:24,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:08:24,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:08:24,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:08:24,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:08:24,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:08:24,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:08:24,150 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:08:24,150 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:08:24,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:08:24,151 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:08:24,151 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:08:24,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:08:24,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:08:24,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:08:24,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:08:24,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:08:24,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:08:24,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:08:24,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:08:24,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:08:24,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:08:24,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:08:24,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:08:24,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:08:24,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 [2024-11-10 10:08:24,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:08:24,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:08:24,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:08:24,506 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:08:24,507 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:08:24,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/twostage_3.i [2024-11-10 10:08:26,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:08:26,356 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:08:26,357 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/twostage_3.i [2024-11-10 10:08:26,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07daa7d5b/19a5f90b71574302aeb2225d78136ec4/FLAG51b1761f8 [2024-11-10 10:08:26,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07daa7d5b/19a5f90b71574302aeb2225d78136ec4 [2024-11-10 10:08:26,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:08:26,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:08:26,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:08:26,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:08:26,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:08:26,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:08:26" (1/1) ... [2024-11-10 10:08:26,671 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff79518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:26, skipping insertion in model container [2024-11-10 10:08:26,671 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:08:26" (1/1) ... [2024-11-10 10:08:26,735 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:08:27,313 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/twostage_3.i[59093,59106] [2024-11-10 10:08:27,342 WARN L1684 CHandler]: Possible shadowing of function lock [2024-11-10 10:08:27,344 WARN L1684 CHandler]: Possible shadowing of function lock [2024-11-10 10:08:27,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:08:27,357 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:08:27,414 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/twostage_3.i[59093,59106] [2024-11-10 10:08:27,423 WARN L1684 CHandler]: Possible shadowing of function lock [2024-11-10 10:08:27,424 WARN L1684 CHandler]: Possible shadowing of function lock [2024-11-10 10:08:27,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:08:27,555 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:08:27,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27 WrapperNode [2024-11-10 10:08:27,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:08:27,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:08:27,558 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:08:27,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:08:27,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,599 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,637 INFO L138 Inliner]: procedures = 373, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 136 [2024-11-10 10:08:27,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:08:27,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:08:27,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:08:27,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:08:27,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,656 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,680 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]. [2024-11-10 10:08:27,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,695 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:08:27,716 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:08:27,717 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:08:27,717 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:08:27,718 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (1/1) ... [2024-11-10 10:08:27,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:08:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:27,757 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) [2024-11-10 10:08:27,760 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 [2024-11-10 10:08:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2024-11-10 10:08:27,818 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2024-11-10 10:08:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2024-11-10 10:08:27,818 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2024-11-10 10:08:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 10:08:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 10:08:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:08:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:08:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:08:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 10:08:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:08:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:08:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 10:08:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:08:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:08:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:08:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:08:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:08:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 10:08:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:08:27,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:08:27,823 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:08:27,984 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:08:27,986 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:08:28,292 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1301: havoc main_~#tPool~0#1.base, main_~#tPool~0#1.offset; [2024-11-10 10:08:28,292 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1301-1: SUMMARY for call ULTIMATE.dealloc(main_~#tPool~0#1.base, main_~#tPool~0#1.offset); srcloc: null [2024-11-10 10:08:28,292 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1302: havoc main_~#rPool~0#1.base, main_~#rPool~0#1.offset; [2024-11-10 10:08:28,293 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1302-1: SUMMARY for call ULTIMATE.dealloc(main_~#rPool~0#1.base, main_~#rPool~0#1.offset); srcloc: null [2024-11-10 10:08:28,294 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:08:28,294 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:08:28,489 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:08:28,490 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:08:28,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:08:28 BoogieIcfgContainer [2024-11-10 10:08:28,491 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:08:28,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:08:28,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:08:28,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:08:28,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:08:26" (1/3) ... [2024-11-10 10:08:28,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ab76f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:08:28, skipping insertion in model container [2024-11-10 10:08:28,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:27" (2/3) ... [2024-11-10 10:08:28,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ab76f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:08:28, skipping insertion in model container [2024-11-10 10:08:28,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:08:28" (3/3) ... [2024-11-10 10:08:28,500 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2024-11-10 10:08:28,518 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:08:28,518 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:08:28,518 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:08:28,574 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 10:08:28,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 65 transitions, 150 flow [2024-11-10 10:08:28,660 INFO L124 PetriNetUnfolderBase]: 26/145 cut-off events. [2024-11-10 10:08:28,660 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 10:08:28,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 26/145 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 602 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 79. Up to 8 conditions per place. [2024-11-10 10:08:28,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 65 transitions, 150 flow [2024-11-10 10:08:28,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 63 transitions, 140 flow [2024-11-10 10:08:28,688 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:28,696 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;@4a7fb69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:28,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:08:28,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:28,707 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2024-11-10 10:08:28,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:08:28,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:28,708 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 10:08:28,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:08:28,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash -211147787, now seen corresponding path program 1 times [2024-11-10 10:08:28,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:28,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289342280] [2024-11-10 10:08:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:28,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:28,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:08:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:29,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:08:29,004 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:08:29,005 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-10 10:08:29,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-10 10:08:29,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-10 10:08:29,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-10 10:08:29,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:08:29,009 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:08:29,012 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:08:29,012 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 10:08:29,054 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-10 10:08:29,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 103 transitions, 250 flow [2024-11-10 10:08:29,160 INFO L124 PetriNetUnfolderBase]: 113/475 cut-off events. [2024-11-10 10:08:29,160 INFO L125 PetriNetUnfolderBase]: For 72/84 co-relation queries the response was YES. [2024-11-10 10:08:29,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 475 events. 113/475 cut-off events. For 72/84 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2667 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 298. Up to 32 conditions per place. [2024-11-10 10:08:29,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 103 transitions, 250 flow [2024-11-10 10:08:29,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 103 transitions, 250 flow [2024-11-10 10:08:29,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:29,179 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;@4a7fb69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:29,179 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:08:29,215 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:29,216 INFO L124 PetriNetUnfolderBase]: 10/80 cut-off events. [2024-11-10 10:08:29,216 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:08:29,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:29,216 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 10:08:29,217 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 10:08:29,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2090819483, now seen corresponding path program 1 times [2024-11-10 10:08:29,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:29,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002070982] [2024-11-10 10:08:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:29,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:29,305 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:08:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:29,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:08:29,398 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:08:29,398 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-10 10:08:29,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-11-10 10:08:29,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-10 10:08:29,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-10 10:08:29,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-10 10:08:29,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:08:29,401 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:08:29,401 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:08:29,402 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 10:08:29,449 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-11-10 10:08:29,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 141 transitions, 354 flow [2024-11-10 10:08:29,677 INFO L124 PetriNetUnfolderBase]: 508/1553 cut-off events. [2024-11-10 10:08:29,677 INFO L125 PetriNetUnfolderBase]: For 419/453 co-relation queries the response was YES. [2024-11-10 10:08:29,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 1553 events. 508/1553 cut-off events. For 419/453 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10056 event pairs, 32 based on Foata normal form. 0/1211 useless extension candidates. Maximal degree in co-relation 1035. Up to 192 conditions per place. [2024-11-10 10:08:29,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 141 transitions, 354 flow [2024-11-10 10:08:29,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 141 transitions, 354 flow [2024-11-10 10:08:29,719 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:29,720 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;@4a7fb69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:29,721 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 10:08:29,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:29,739 INFO L124 PetriNetUnfolderBase]: 19/165 cut-off events. [2024-11-10 10:08:29,739 INFO L125 PetriNetUnfolderBase]: For 15/16 co-relation queries the response was YES. [2024-11-10 10:08:29,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:29,739 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 10:08:29,740 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:08:29,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash -538562812, now seen corresponding path program 1 times [2024-11-10 10:08:29,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:29,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529276026] [2024-11-10 10:08:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:29,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:08:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:29,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:08:29,852 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:08:29,852 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-10 10:08:29,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2024-11-10 10:08:29,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-10 10:08:29,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-10 10:08:29,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-10 10:08:29,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-10 10:08:29,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:08:29,853 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:08:29,854 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:08:29,854 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 10:08:29,910 INFO L143 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2024-11-10 10:08:29,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 179 transitions, 462 flow [2024-11-10 10:08:30,937 INFO L124 PetriNetUnfolderBase]: 2399/5755 cut-off events. [2024-11-10 10:08:30,938 INFO L125 PetriNetUnfolderBase]: For 2144/2208 co-relation queries the response was YES. [2024-11-10 10:08:31,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7896 conditions, 5755 events. 2399/5755 cut-off events. For 2144/2208 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 42810 event pairs, 313 based on Foata normal form. 0/4599 useless extension candidates. Maximal degree in co-relation 3901. Up to 1024 conditions per place. [2024-11-10 10:08:31,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 179 transitions, 462 flow [2024-11-10 10:08:31,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 179 transitions, 462 flow [2024-11-10 10:08:31,122 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:31,123 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;@4a7fb69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:31,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 10:08:31,145 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:31,146 INFO L124 PetriNetUnfolderBase]: 37/262 cut-off events. [2024-11-10 10:08:31,146 INFO L125 PetriNetUnfolderBase]: For 39/62 co-relation queries the response was YES. [2024-11-10 10:08:31,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:31,146 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:31,147 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting funcBErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 10:08:31,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:31,147 INFO L85 PathProgramCache]: Analyzing trace with hash 160080722, now seen corresponding path program 1 times [2024-11-10 10:08:31,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:31,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059863830] [2024-11-10 10:08:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:31,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:31,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:31,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059863830] [2024-11-10 10:08:31,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059863830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:31,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:31,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:08:31,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350431995] [2024-11-10 10:08:31,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:31,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:08:31,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:31,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:08:31,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:08:31,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 179 [2024-11-10 10:08:31,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 179 transitions, 462 flow. Second operand has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 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) [2024-11-10 10:08:31,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:31,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 179 [2024-11-10 10:08:31,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand