./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:37:47,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:37:47,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:37:47,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:37:47,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:37:47,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:37:47,519 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:37:47,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:37:47,520 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:37:47,524 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:37:47,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:37:47,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:37:47,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:37:47,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:37:47,526 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:37:47,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:37:47,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:37:47,526 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:37:47,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:37:47,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:37:47,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:37:47,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:37:47,528 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:37:47,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:37:47,530 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:37:47,530 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:37:47,530 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:37:47,530 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:37:47,531 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:37:47,531 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:37:47,531 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:37:47,531 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:37:47,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:37:47,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:37:47,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:37:47,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:37:47,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:37:47,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:37:47,533 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:37:47,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:37:47,534 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:37:47,534 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:37:47,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2024-11-09 02:37:47,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:37:47,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:37:47,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:37:47,803 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:37:47,804 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:37:47,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2024-11-09 02:37:49,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:37:49,572 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:37:49,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2024-11-09 02:37:49,596 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382a8d939/154c8664661d4b31beec9500db60756b/FLAG4d12c58f8 [2024-11-09 02:37:49,611 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382a8d939/154c8664661d4b31beec9500db60756b [2024-11-09 02:37:49,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:37:49,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:37:49,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:37:49,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:37:49,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:37:49,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:37:49" (1/1) ... [2024-11-09 02:37:49,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ee42c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:49, skipping insertion in model container [2024-11-09 02:37:49,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:37:49" (1/1) ... [2024-11-09 02:37:49,681 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:37:50,205 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/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2024-11-09 02:37:50,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:37:50,326 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:37:50,365 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/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2024-11-09 02:37:50,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:37:50,452 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:37:50,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50 WrapperNode [2024-11-09 02:37:50,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:37:50,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:37:50,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:37:50,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:37:50,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,520 INFO L138 Inliner]: procedures = 271, calls = 109, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 275 [2024-11-09 02:37:50,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:37:50,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:37:50,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:37:50,522 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:37:50,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,569 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 70, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2024-11-09 02:37:50,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:37:50,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:37:50,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:37:50,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:37:50,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (1/1) ... [2024-11-09 02:37:50,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:37:50,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:50,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:37:50,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:37:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 02:37:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 02:37:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:37:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:37:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:37:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:37:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 02:37:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:37:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:37:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:37:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 02:37:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:37:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:37:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 02:37:50,705 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 02:37:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:37:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:37:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:37:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 02:37:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:37:50,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:37:50,709 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:37:50,893 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:37:50,896 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:37:51,286 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:37:51,287 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:37:51,842 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:37:51,842 INFO L316 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-09 02:37:51,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:37:51 BoogieIcfgContainer [2024-11-09 02:37:51,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:37:51,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:37:51,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:37:51,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:37:51,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:37:49" (1/3) ... [2024-11-09 02:37:51,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b907ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:37:51, skipping insertion in model container [2024-11-09 02:37:51,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:50" (2/3) ... [2024-11-09 02:37:51,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b907ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:37:51, skipping insertion in model container [2024-11-09 02:37:51,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:37:51" (3/3) ... [2024-11-09 02:37:51,854 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2024-11-09 02:37:51,873 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:37:51,873 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 02:37:51,873 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:37:51,929 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 02:37:51,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 93 transitions, 193 flow [2024-11-09 02:37:52,033 INFO L124 PetriNetUnfolderBase]: 38/137 cut-off events. [2024-11-09 02:37:52,034 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 02:37:52,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 137 events. 38/137 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 553 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 86. Up to 8 conditions per place. [2024-11-09 02:37:52,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 93 transitions, 193 flow [2024-11-09 02:37:52,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 91 transitions, 186 flow [2024-11-09 02:37:52,058 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:52,067 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;@4fd16e4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:52,068 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:37:52,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:52,077 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-09 02:37:52,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:52,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:52,079 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 02:37:52,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:37:52,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:52,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1516308453, now seen corresponding path program 1 times [2024-11-09 02:37:52,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:52,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770521459] [2024-11-09 02:37:52,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:52,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:52,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:52,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770521459] [2024-11-09 02:37:52,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770521459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:52,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:52,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680558791] [2024-11-09 02:37:52,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:52,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:52,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:52,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:52,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 93 [2024-11-09 02:37:52,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 91 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:52,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:52,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 93 [2024-11-09 02:37:52,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:52,847 INFO L124 PetriNetUnfolderBase]: 421/1183 cut-off events. [2024-11-09 02:37:52,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:52,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 1183 events. 421/1183 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7470 event pairs, 378 based on Foata normal form. 290/1349 useless extension candidates. Maximal degree in co-relation 1952. Up to 833 conditions per place. [2024-11-09 02:37:52,860 INFO L140 encePairwiseOnDemand]: 68/93 looper letters, 42 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-09 02:37:52,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 232 flow [2024-11-09 02:37:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:37:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:37:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-09 02:37:52,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5197132616487455 [2024-11-09 02:37:52,877 INFO L175 Difference]: Start difference. First operand has 69 places, 91 transitions, 186 flow. Second operand 3 states and 145 transitions. [2024-11-09 02:37:52,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 232 flow [2024-11-09 02:37:52,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 232 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:37:52,887 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 154 flow [2024-11-09 02:37:52,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-11-09 02:37:52,894 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2024-11-09 02:37:52,894 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 154 flow [2024-11-09 02:37:52,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:52,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:52,895 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:52,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:37:52,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:37:52,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash -768015607, now seen corresponding path program 1 times [2024-11-09 02:37:52,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:52,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625907708] [2024-11-09 02:37:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:52,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:53,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:53,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625907708] [2024-11-09 02:37:53,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625907708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:53,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388567457] [2024-11-09 02:37:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:53,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:53,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:53,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:37:53,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:37:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:53,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:37:53,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:53,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:53,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388567457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:53,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:53,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 02:37:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132129461] [2024-11-09 02:37:53,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:53,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:37:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:53,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:37:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:37:53,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 93 [2024-11-09 02:37:53,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:53,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:53,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 93 [2024-11-09 02:37:53,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:53,541 INFO L124 PetriNetUnfolderBase]: 421/1186 cut-off events. [2024-11-09 02:37:53,542 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:53,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 1186 events. 421/1186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7478 event pairs, 378 based on Foata normal form. 0/1062 useless extension candidates. Maximal degree in co-relation 2025. Up to 833 conditions per place. [2024-11-09 02:37:53,547 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 42 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-11-09 02:37:53,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 260 flow [2024-11-09 02:37:53,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:37:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:37:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-09 02:37:53,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-11-09 02:37:53,550 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 154 flow. Second operand 6 states and 206 transitions. [2024-11-09 02:37:53,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 260 flow [2024-11-09 02:37:53,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 256 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:53,556 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 186 flow [2024-11-09 02:37:53,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-11-09 02:37:53,557 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2024-11-09 02:37:53,557 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 186 flow [2024-11-09 02:37:53,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:53,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:53,558 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:53,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:37:53,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:53,761 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:37:53,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:53,762 INFO L85 PathProgramCache]: Analyzing trace with hash 21054363, now seen corresponding path program 2 times [2024-11-09 02:37:53,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:53,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713049967] [2024-11-09 02:37:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:53,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:53,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713049967] [2024-11-09 02:37:53,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713049967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:53,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534910241] [2024-11-09 02:37:53,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:37:53,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:53,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:53,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:37:53,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:37:54,041 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:37:54,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:37:54,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:37:54,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:54,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:54,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534910241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:54,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:37:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492228998] [2024-11-09 02:37:54,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:54,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:37:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:54,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:37:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:37:54,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 93 [2024-11-09 02:37:54,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 27.307692307692307) internal successors, (355), 13 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:54,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:54,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 93 [2024-11-09 02:37:54,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:54,441 INFO L124 PetriNetUnfolderBase]: 421/1192 cut-off events. [2024-11-09 02:37:54,441 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-09 02:37:54,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2074 conditions, 1192 events. 421/1192 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7475 event pairs, 378 based on Foata normal form. 6/1075 useless extension candidates. Maximal degree in co-relation 2016. Up to 833 conditions per place. [2024-11-09 02:37:54,449 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 42 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-11-09 02:37:54,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 328 flow [2024-11-09 02:37:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:37:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:37:54,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 371 transitions. [2024-11-09 02:37:54,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3324372759856631 [2024-11-09 02:37:54,456 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 186 flow. Second operand 12 states and 371 transitions. [2024-11-09 02:37:54,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 328 flow [2024-11-09 02:37:54,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 314 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:54,460 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 256 flow [2024-11-09 02:37:54,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=256, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-11-09 02:37:54,461 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 26 predicate places. [2024-11-09 02:37:54,462 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 256 flow [2024-11-09 02:37:54,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.307692307692307) internal successors, (355), 13 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:54,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:54,463 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:54,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 02:37:54,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 02:37:54,669 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:37:54,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1246139173, now seen corresponding path program 3 times [2024-11-09 02:37:54,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:54,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097223891] [2024-11-09 02:37:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:54,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:54,718 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:37:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:54,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:37:54,761 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:37:54,762 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-09 02:37:54,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-09 02:37:54,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-09 02:37:54,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-09 02:37:54,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:37:54,765 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-09 02:37:54,768 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:37:54,768 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 02:37:54,807 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:37:54,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 136 transitions, 288 flow [2024-11-09 02:37:54,842 INFO L124 PetriNetUnfolderBase]: 64/231 cut-off events. [2024-11-09 02:37:54,842 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 02:37:54,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 231 events. 64/231 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1099 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 139. Up to 12 conditions per place. [2024-11-09 02:37:54,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 136 transitions, 288 flow [2024-11-09 02:37:54,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 136 transitions, 288 flow [2024-11-09 02:37:54,851 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:54,852 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;@4fd16e4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:54,852 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:37:54,860 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:54,862 INFO L124 PetriNetUnfolderBase]: 7/54 cut-off events. [2024-11-09 02:37:54,862 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:37:54,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:54,862 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:54,863 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:37:54,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:54,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1132097826, now seen corresponding path program 1 times [2024-11-09 02:37:54,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:54,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842233111] [2024-11-09 02:37:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:54,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:54,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:54,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842233111] [2024-11-09 02:37:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842233111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:54,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:54,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:54,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982099984] [2024-11-09 02:37:54,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:54,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:54,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:54,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:54,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 136 [2024-11-09 02:37:54,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:54,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:54,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 136 [2024-11-09 02:37:54,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:58,081 INFO L124 PetriNetUnfolderBase]: 16440/31851 cut-off events. [2024-11-09 02:37:58,081 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-09 02:37:58,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56256 conditions, 31851 events. 16440/31851 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 291987 event pairs, 15174 based on Foata normal form. 8470/37146 useless extension candidates. Maximal degree in co-relation 48448. Up to 24302 conditions per place. [2024-11-09 02:37:58,275 INFO L140 encePairwiseOnDemand]: 100/136 looper letters, 64 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-11-09 02:37:58,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 356 flow [2024-11-09 02:37:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:37:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:37:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2024-11-09 02:37:58,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2024-11-09 02:37:58,279 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 288 flow. Second operand 3 states and 214 transitions. [2024-11-09 02:37:58,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 104 transitions, 356 flow [2024-11-09 02:37:58,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 104 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:37:58,287 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 234 flow [2024-11-09 02:37:58,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2024-11-09 02:37:58,289 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2024-11-09 02:37:58,289 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 234 flow [2024-11-09 02:37:58,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:58,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:58,290 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:58,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:37:58,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:37:58,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:58,291 INFO L85 PathProgramCache]: Analyzing trace with hash 807562168, now seen corresponding path program 1 times [2024-11-09 02:37:58,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:58,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704998088] [2024-11-09 02:37:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:58,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:58,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:58,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704998088] [2024-11-09 02:37:58,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704998088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:58,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661130754] [2024-11-09 02:37:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:58,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:58,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:58,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:37:58,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:37:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:58,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:37:58,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:58,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661130754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:58,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:58,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 02:37:58,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776178406] [2024-11-09 02:37:58,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:58,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:37:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:37:58,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:37:58,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 136 [2024-11-09 02:37:58,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:58,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:58,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 136 [2024-11-09 02:37:58,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:38:01,594 INFO L124 PetriNetUnfolderBase]: 16440/31854 cut-off events. [2024-11-09 02:38:01,595 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-09 02:38:01,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56272 conditions, 31854 events. 16440/31854 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 292150 event pairs, 15174 based on Foata normal form. 0/28679 useless extension candidates. Maximal degree in co-relation 56259. Up to 24302 conditions per place. [2024-11-09 02:38:01,832 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 64 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-11-09 02:38:01,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 384 flow [2024-11-09 02:38:01,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:38:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:38:01,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2024-11-09 02:38:01,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-11-09 02:38:01,834 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 234 flow. Second operand 6 states and 300 transitions. [2024-11-09 02:38:01,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 384 flow [2024-11-09 02:38:01,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 380 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:38:01,844 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 266 flow [2024-11-09 02:38:01,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-11-09 02:38:01,845 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2024-11-09 02:38:01,845 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 266 flow [2024-11-09 02:38:01,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:38:01,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:38:01,846 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:38:01,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 02:38:02,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:38:02,047 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:38:02,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:38:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 725808478, now seen corresponding path program 2 times [2024-11-09 02:38:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:38:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102714152] [2024-11-09 02:38:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:38:02,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:38:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:38:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:38:02,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:38:02,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102714152] [2024-11-09 02:38:02,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102714152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:38:02,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029264889] [2024-11-09 02:38:02,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:38:02,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:38:02,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:38:02,198 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:38:02,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:38:02,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:38:02,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:38:02,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:38:02,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:38:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:38:02,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:38:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:38:02,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029264889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:38:02,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:38:02,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:38:02,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835087726] [2024-11-09 02:38:02,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:38:02,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:38:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:38:02,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:38:02,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:38:02,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 136 [2024-11-09 02:38:02,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 266 flow. Second operand has 13 states, 13 states have (on average 39.38461538461539) internal successors, (512), 13 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:38:02,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:38:02,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 136 [2024-11-09 02:38:02,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:38:04,692 INFO L124 PetriNetUnfolderBase]: 16440/31860 cut-off events. [2024-11-09 02:38:04,692 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-11-09 02:38:04,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56309 conditions, 31860 events. 16440/31860 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 292217 event pairs, 15174 based on Foata normal form. 6/28692 useless extension candidates. Maximal degree in co-relation 56250. Up to 24302 conditions per place. [2024-11-09 02:38:04,887 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 64 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2024-11-09 02:38:04,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 452 flow [2024-11-09 02:38:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:38:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:38:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 537 transitions. [2024-11-09 02:38:04,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3290441176470588 [2024-11-09 02:38:04,890 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 266 flow. Second operand 12 states and 537 transitions. [2024-11-09 02:38:04,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 452 flow [2024-11-09 02:38:04,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 113 transitions, 438 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:38:04,895 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 336 flow [2024-11-09 02:38:04,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=336, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2024-11-09 02:38:04,896 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 26 predicate places. [2024-11-09 02:38:04,896 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 336 flow [2024-11-09 02:38:04,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 39.38461538461539) internal successors, (512), 13 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:38:04,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:38:04,897 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:38:04,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:38:05,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:38:05,098 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:38:05,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:38:05,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1059752162, now seen corresponding path program 3 times [2024-11-09 02:38:05,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:38:05,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741303576] [2024-11-09 02:38:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:38:05,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:38:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:38:05,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:38:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:38:05,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:38:05,186 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:38:05,186 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 02:38:05,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-09 02:38:05,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-09 02:38:05,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-09 02:38:05,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-09 02:38:05,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:38:05,189 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-09 02:38:05,189 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:38:05,190 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 02:38:05,233 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:38:05,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 179 transitions, 385 flow [2024-11-09 02:38:05,454 INFO L124 PetriNetUnfolderBase]: 93/336 cut-off events. [2024-11-09 02:38:05,454 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 02:38:05,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 336 events. 93/336 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1717 event pairs, 1 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 240. Up to 16 conditions per place. [2024-11-09 02:38:05,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 179 transitions, 385 flow [2024-11-09 02:38:05,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 179 transitions, 385 flow [2024-11-09 02:38:05,466 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:38:05,466 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;@4fd16e4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:38:05,466 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 02:38:05,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:38:05,478 INFO L124 PetriNetUnfolderBase]: 13/84 cut-off events. [2024-11-09 02:38:05,478 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:38:05,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:38:05,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:38:05,479 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-09 02:38:05,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:38:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash -22759711, now seen corresponding path program 1 times [2024-11-09 02:38:05,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:38:05,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690442850] [2024-11-09 02:38:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:38:05,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:38:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:38:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:38:05,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:38:05,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690442850] [2024-11-09 02:38:05,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690442850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:38:05,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:38:05,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:38:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649404739] [2024-11-09 02:38:05,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:38:05,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:38:05,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:38:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:38:05,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:38:05,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 179 [2024-11-09 02:38:05,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 179 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:38:05,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:38:05,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 179 [2024-11-09 02:38:05,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand