./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:42:03,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:42:03,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:42:03,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:42:03,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:42:03,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:42:03,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:42:03,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:42:03,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:42:03,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:42:03,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:42:03,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:42:03,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:42:03,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:42:03,989 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:42:03,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:42:03,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:42:03,990 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:42:03,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:42:03,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:42:03,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:42:03,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:42:03,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:42:03,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:42:03,992 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:42:03,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:42:03,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:42:03,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:42:03,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:42:03,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:42:03,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:42:03,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:42:03,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:42:03,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:42:03,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:42:03,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:42:03,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:42:03,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:42:03,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:42:03,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:42:03,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:42:03,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:42:03,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2024-11-19 01:42:04,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:42:04,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:42:04,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:42:04,289 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:42:04,290 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:42:04,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-11-19 01:42:05,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:42:06,037 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:42:06,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-11-19 01:42:06,065 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a097f79/8ac2f630671e4284851b42c63b853132/FLAGc3c0f023d [2024-11-19 01:42:06,079 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a097f79/8ac2f630671e4284851b42c63b853132 [2024-11-19 01:42:06,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:42:06,083 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:42:06,084 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:42:06,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:42:06,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:42:06,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:06,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b60e68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06, skipping insertion in model container [2024-11-19 01:42:06,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:06,144 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:42:06,668 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_77-tricky_address4_racing.i[41323,41336] [2024-11-19 01:42:06,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:42:06,746 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:42:06,803 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_77-tricky_address4_racing.i[41323,41336] [2024-11-19 01:42:06,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:42:06,896 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:42:06,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06 WrapperNode [2024-11-19 01:42:06,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:42:06,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:42:06,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:42:06,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:42:06,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:06,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:06,955 INFO L138 Inliner]: procedures = 271, calls = 109, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 275 [2024-11-19 01:42:06,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:42:06,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:42:06,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:42:06,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:42:06,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:06,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:06,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:07,010 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]. [2024-11-19 01:42:07,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:07,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:07,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:07,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:07,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:07,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:07,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:42:07,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:42:07,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:42:07,044 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:42:07,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (1/1) ... [2024-11-19 01:42:07,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:42:07,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:42:07,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:42:07,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:42:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 01:42:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 01:42:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 01:42:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:42:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:42:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 01:42:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 01:42:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:42:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:42:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 01:42:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 01:42:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 01:42:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:42:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-19 01:42:07,160 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-19 01:42:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:42:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:42:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 01:42:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 01:42:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:42:07,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:42:07,165 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:42:07,317 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:42:07,319 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:42:07,811 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:42:07,811 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:42:08,437 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:42:08,438 INFO L316 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-19 01:42:08,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:42:08 BoogieIcfgContainer [2024-11-19 01:42:08,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:42:08,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:42:08,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:42:08,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:42:08,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:42:06" (1/3) ... [2024-11-19 01:42:08,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c73f125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:42:08, skipping insertion in model container [2024-11-19 01:42:08,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:06" (2/3) ... [2024-11-19 01:42:08,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c73f125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:42:08, skipping insertion in model container [2024-11-19 01:42:08,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:42:08" (3/3) ... [2024-11-19 01:42:08,450 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2024-11-19 01:42:08,468 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:42:08,469 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 01:42:08,469 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:42:08,515 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-19 01:42:08,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 93 transitions, 193 flow [2024-11-19 01:42:08,618 INFO L124 PetriNetUnfolderBase]: 38/137 cut-off events. [2024-11-19 01:42:08,618 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 01:42:08,625 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. [2024-11-19 01:42:08,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 93 transitions, 193 flow [2024-11-19 01:42:08,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 91 transitions, 186 flow [2024-11-19 01:42:08,645 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:42:08,653 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;@71ac158c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:42:08,653 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:42:08,662 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:42:08,662 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-19 01:42:08,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:42:08,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:42:08,663 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-19 01:42:08,664 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)] === [2024-11-19 01:42:08,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:42:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1516308453, now seen corresponding path program 1 times [2024-11-19 01:42:08,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:42:08,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941689742] [2024-11-19 01:42:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:42:08,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:42:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:42:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:42:09,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:42:09,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941689742] [2024-11-19 01:42:09,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941689742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:42:09,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:42:09,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:42:09,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851737389] [2024-11-19 01:42:09,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:42:09,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:42:09,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:42:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:42:09,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:42:09,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 93 [2024-11-19 01:42:09,132 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) [2024-11-19 01:42:09,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:42:09,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 93 [2024-11-19 01:42:09,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:42:09,450 INFO L124 PetriNetUnfolderBase]: 421/1183 cut-off events. [2024-11-19 01:42:09,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:42:09,458 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. [2024-11-19 01:42:09,465 INFO L140 encePairwiseOnDemand]: 68/93 looper letters, 42 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-19 01:42:09,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 232 flow [2024-11-19 01:42:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:42:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:42:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-19 01:42:09,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5197132616487455 [2024-11-19 01:42:09,480 INFO L175 Difference]: Start difference. First operand has 69 places, 91 transitions, 186 flow. Second operand 3 states and 145 transitions. [2024-11-19 01:42:09,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 232 flow [2024-11-19 01:42:09,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 232 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:42:09,490 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 154 flow [2024-11-19 01:42:09,493 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} [2024-11-19 01:42:09,499 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2024-11-19 01:42:09,499 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 154 flow [2024-11-19 01:42:09,500 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) [2024-11-19 01:42:09,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:42:09,500 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 01:42:09,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:42:09,500 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)] === [2024-11-19 01:42:09,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:42:09,501 INFO L85 PathProgramCache]: Analyzing trace with hash -768015607, now seen corresponding path program 1 times [2024-11-19 01:42:09,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:42:09,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557694711] [2024-11-19 01:42:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:42:09,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:42:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:42:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:42:09,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:42:09,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557694711] [2024-11-19 01:42:09,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557694711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:42:09,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713175522] [2024-11-19 01:42:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:42:09,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:42:09,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:42:09,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:42:09,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:42:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:42:09,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:42:09,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:42:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:42:09,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:42:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:42:09,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713175522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:42:09,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:42:09,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-19 01:42:09,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699659418] [2024-11-19 01:42:09,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:42:09,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:42:09,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:42:09,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:42:09,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:42:09,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 93 [2024-11-19 01:42:09,844 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) [2024-11-19 01:42:09,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:42:09,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 93 [2024-11-19 01:42:09,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:42:10,152 INFO L124 PetriNetUnfolderBase]: 421/1186 cut-off events. [2024-11-19 01:42:10,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:42:10,154 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. [2024-11-19 01:42:10,158 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 42 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-11-19 01:42:10,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 260 flow [2024-11-19 01:42:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:42:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:42:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-19 01:42:10,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-11-19 01:42:10,163 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 154 flow. Second operand 6 states and 206 transitions. [2024-11-19 01:42:10,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 260 flow [2024-11-19 01:42:10,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 256 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:42:10,167 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 186 flow [2024-11-19 01:42:10,168 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} [2024-11-19 01:42:10,169 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2024-11-19 01:42:10,169 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 186 flow [2024-11-19 01:42:10,170 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) [2024-11-19 01:42:10,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:42:10,170 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-11-19 01:42:10,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:42:10,371 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 [2024-11-19 01:42:10,372 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)] === [2024-11-19 01:42:10,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:42:10,372 INFO L85 PathProgramCache]: Analyzing trace with hash 21054363, now seen corresponding path program 2 times [2024-11-19 01:42:10,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:42:10,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601261586] [2024-11-19 01:42:10,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:42:10,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:42:10,418 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:42:10,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:42:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:42:10,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:42:10,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601261586] [2024-11-19 01:42:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601261586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:42:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954207014] [2024-11-19 01:42:10,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:42:10,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:42:10,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:42:10,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:42:10,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:42:10,648 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:42:10,649 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:42:10,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:42:10,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:42:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:42:10,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:42:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:42:10,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954207014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:42:10,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:42:10,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-19 01:42:10,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927870600] [2024-11-19 01:42:10,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:42:10,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:42:10,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:42:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:42:10,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:42:10,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 93 [2024-11-19 01:42:10,745 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) [2024-11-19 01:42:10,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:42:10,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 93 [2024-11-19 01:42:10,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:42:11,026 INFO L124 PetriNetUnfolderBase]: 421/1192 cut-off events. [2024-11-19 01:42:11,026 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-19 01:42:11,029 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. [2024-11-19 01:42:11,033 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 42 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-11-19 01:42:11,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 328 flow [2024-11-19 01:42:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:42:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:42:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 371 transitions. [2024-11-19 01:42:11,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3324372759856631 [2024-11-19 01:42:11,038 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 186 flow. Second operand 12 states and 371 transitions. [2024-11-19 01:42:11,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 328 flow [2024-11-19 01:42:11,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 314 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 01:42:11,041 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 256 flow [2024-11-19 01:42:11,042 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} [2024-11-19 01:42:11,042 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 26 predicate places. [2024-11-19 01:42:11,043 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 256 flow [2024-11-19 01:42:11,043 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) [2024-11-19 01:42:11,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:42:11,043 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-11-19 01:42:11,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:42:11,244 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 [2024-11-19 01:42:11,244 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)] === [2024-11-19 01:42:11,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:42:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1246139173, now seen corresponding path program 3 times [2024-11-19 01:42:11,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:42:11,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331924154] [2024-11-19 01:42:11,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:42:11,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:42:11,320 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 01:42:11,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 01:42:11,321 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 01:42:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 01:42:11,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 01:42:11,383 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 01:42:11,384 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-19 01:42:11,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-19 01:42:11,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-19 01:42:11,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-19 01:42:11,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:42:11,387 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-19 01:42:11,390 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 01:42:11,391 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 01:42:11,430 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:42:11,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 136 transitions, 288 flow [2024-11-19 01:42:11,454 INFO L124 PetriNetUnfolderBase]: 64/231 cut-off events. [2024-11-19 01:42:11,454 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 01:42:11,457 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. [2024-11-19 01:42:11,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 136 transitions, 288 flow [2024-11-19 01:42:11,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 136 transitions, 288 flow [2024-11-19 01:42:11,465 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:42:11,466 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;@71ac158c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:42:11,466 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 01:42:11,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:42:11,473 INFO L124 PetriNetUnfolderBase]: 7/54 cut-off events. [2024-11-19 01:42:11,473 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:42:11,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:42:11,473 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-11-19 01:42:11,473 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)] === [2024-11-19 01:42:11,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:42:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1132097826, now seen corresponding path program 1 times [2024-11-19 01:42:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:42:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863505442] [2024-11-19 01:42:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:42:11,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:42:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:42:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 01:42:11,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:42:11,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863505442] [2024-11-19 01:42:11,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863505442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:42:11,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:42:11,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:42:11,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677687299] [2024-11-19 01:42:11,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:42:11,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:42:11,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:42:11,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:42:11,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:42:11,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 136 [2024-11-19 01:42:11,526 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) [2024-11-19 01:42:11,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:42:11,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 136 [2024-11-19 01:42:11,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:42:14,609 INFO L124 PetriNetUnfolderBase]: 16440/31851 cut-off events. [2024-11-19 01:42:14,610 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-19 01:42:14,710 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. [2024-11-19 01:42:14,824 INFO L140 encePairwiseOnDemand]: 100/136 looper letters, 64 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-11-19 01:42:14,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 356 flow [2024-11-19 01:42:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:42:14,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:42:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2024-11-19 01:42:14,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2024-11-19 01:42:14,826 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 288 flow. Second operand 3 states and 214 transitions. [2024-11-19 01:42:14,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 104 transitions, 356 flow [2024-11-19 01:42:14,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 104 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:42:14,831 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 234 flow [2024-11-19 01:42:14,831 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} [2024-11-19 01:42:14,832 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2024-11-19 01:42:14,832 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 234 flow [2024-11-19 01:42:14,833 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) [2024-11-19 01:42:14,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:42:14,833 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 01:42:14,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:42:14,833 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)] === [2024-11-19 01:42:14,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:42:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash 807562168, now seen corresponding path program 1 times [2024-11-19 01:42:14,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:42:14,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764252713] [2024-11-19 01:42:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:42:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:42:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:42:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 01:42:14,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:42:14,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764252713] [2024-11-19 01:42:14,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764252713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:42:14,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057635764] [2024-11-19 01:42:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:42:14,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:42:14,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:42:14,891 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) [2024-11-19 01:42:14,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:42:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:42:14,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:42:14,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:42:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 01:42:15,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:42:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 01:42:15,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057635764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:42:15,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:42:15,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-19 01:42:15,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331135449] [2024-11-19 01:42:15,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:42:15,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:42:15,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:42:15,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:42:15,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:42:15,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 136 [2024-11-19 01:42:15,036 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) [2024-11-19 01:42:15,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:42:15,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 136 [2024-11-19 01:42:15,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:42:18,064 INFO L124 PetriNetUnfolderBase]: 16440/31854 cut-off events. [2024-11-19 01:42:18,064 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-19 01:42:18,149 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. [2024-11-19 01:42:18,241 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 64 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-11-19 01:42:18,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 384 flow [2024-11-19 01:42:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:42:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:42:18,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2024-11-19 01:42:18,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-11-19 01:42:18,244 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 234 flow. Second operand 6 states and 300 transitions. [2024-11-19 01:42:18,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 384 flow [2024-11-19 01:42:18,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 380 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:42:18,247 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 266 flow [2024-11-19 01:42:18,248 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} [2024-11-19 01:42:18,249 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2024-11-19 01:42:18,249 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 266 flow [2024-11-19 01:42:18,249 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) [2024-11-19 01:42:18,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:42:18,250 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-11-19 01:42:18,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:42:18,453 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 [2024-11-19 01:42:18,454 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)] === [2024-11-19 01:42:18,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:42:18,455 INFO L85 PathProgramCache]: Analyzing trace with hash 725808478, now seen corresponding path program 2 times [2024-11-19 01:42:18,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:42:18,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085333526] [2024-11-19 01:42:18,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:42:18,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:42:18,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:42:18,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:42:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 01:42:18,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:42:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085333526] [2024-11-19 01:42:18,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085333526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:42:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360521441] [2024-11-19 01:42:18,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:42:18,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:42:18,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:42:18,581 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) [2024-11-19 01:42:18,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:42:18,697 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:42:18,697 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:42:18,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:42:18,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:42:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 01:42:18,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:42:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 01:42:18,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360521441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:42:18,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:42:18,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-19 01:42:18,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216264338] [2024-11-19 01:42:18,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:42:18,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:42:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:42:18,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:42:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:42:18,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 136 [2024-11-19 01:42:18,789 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) [2024-11-19 01:42:18,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:42:18,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 136 [2024-11-19 01:42:18,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:42:21,082 INFO L124 PetriNetUnfolderBase]: 16440/31860 cut-off events. [2024-11-19 01:42:21,082 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-11-19 01:42:21,185 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. [2024-11-19 01:42:21,277 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 64 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2024-11-19 01:42:21,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 452 flow [2024-11-19 01:42:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:42:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:42:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 537 transitions. [2024-11-19 01:42:21,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3290441176470588 [2024-11-19 01:42:21,280 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 266 flow. Second operand 12 states and 537 transitions. [2024-11-19 01:42:21,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 452 flow [2024-11-19 01:42:21,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 113 transitions, 438 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 01:42:21,286 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 336 flow [2024-11-19 01:42:21,286 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} [2024-11-19 01:42:21,287 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 26 predicate places. [2024-11-19 01:42:21,288 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 336 flow [2024-11-19 01:42:21,289 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) [2024-11-19 01:42:21,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:42:21,289 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-11-19 01:42:21,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:42:21,489 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 [2024-11-19 01:42:21,491 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)] === [2024-11-19 01:42:21,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:42:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1059752162, now seen corresponding path program 3 times [2024-11-19 01:42:21,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:42:21,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175297044] [2024-11-19 01:42:21,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:42:21,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:42:21,555 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 01:42:21,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 01:42:21,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 01:42:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 01:42:21,593 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 01:42:21,593 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 01:42:21,594 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-19 01:42:21,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-19 01:42:21,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-19 01:42:21,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-19 01:42:21,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-19 01:42:21,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:42:21,596 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-19 01:42:21,596 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 01:42:21,596 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 01:42:21,632 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:42:21,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 179 transitions, 385 flow [2024-11-19 01:42:21,660 INFO L124 PetriNetUnfolderBase]: 93/336 cut-off events. [2024-11-19 01:42:21,660 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-19 01:42:21,664 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. [2024-11-19 01:42:21,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 179 transitions, 385 flow [2024-11-19 01:42:21,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 179 transitions, 385 flow [2024-11-19 01:42:21,672 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:42:21,674 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;@71ac158c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:42:21,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 01:42:21,683 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:42:21,684 INFO L124 PetriNetUnfolderBase]: 13/84 cut-off events. [2024-11-19 01:42:21,684 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:42:21,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:42:21,685 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:42:21,685 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)] === [2024-11-19 01:42:21,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:42:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash -22759711, now seen corresponding path program 1 times [2024-11-19 01:42:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:42:21,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552629577] [2024-11-19 01:42:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:42:21,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:42:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:42:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:42:21,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:42:21,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552629577] [2024-11-19 01:42:21,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552629577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:42:21,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:42:21,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:42:21,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001681673] [2024-11-19 01:42:21,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:42:21,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:42:21,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:42:21,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:42:21,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:42:21,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 179 [2024-11-19 01:42:21,861 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) [2024-11-19 01:42:21,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:42:21,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 179 [2024-11-19 01:42:21,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand