./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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 ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:42:34,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:42:34,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:42:34,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:42:34,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:42:34,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:42:34,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:42:34,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:42:34,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:42:34,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:42:34,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:42:34,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:42:34,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:42:34,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:42:34,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:42:34,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:42:34,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:42:34,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:42:34,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:42:34,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:42:34,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:42:34,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:42:34,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:42:34,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:42:34,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:42:34,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:42:34,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:42:34,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:42:34,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:42:34,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:42:34,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:42:34,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:42:34,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:42:34,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:42:34,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:42:34,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:42:34,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:42:34,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:42:34,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:42:34,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:42:34,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:42:34,982 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:42:35,023 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:42:35,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:42:35,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:42:35,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:42:35,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:42:35,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:42:35,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:42:35,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:42:35,027 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:42:35,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:42:35,028 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:42:35,028 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:42:35,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:42:35,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:42:35,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:42:35,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:42:35,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:42:35,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:42:35,029 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:42:35,029 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:42:35,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:42:35,030 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:42:35,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:42:35,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:42:35,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:42:35,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:42:35,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:42:35,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:42:35,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:42:35,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:42:35,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:42:35,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:42:35,032 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:42:35,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:42:35,032 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:42:35,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:42:35,033 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:42:35,033 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:42:35,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:42:35,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:42:35,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:42:35,347 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:42:35,347 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:42:35,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-09-01 06:42:36,530 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:42:36,772 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:42:36,773 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-09-01 06:42:36,800 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8898953/63a383bc4ca8478bafffc1a39455a7ed/FLAG261d8be98 [2023-09-01 06:42:36,814 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8898953/63a383bc4ca8478bafffc1a39455a7ed [2023-09-01 06:42:36,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:42:36,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:42:36,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:42:36,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:42:36,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:42:36,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:42:36" (1/1) ... [2023-09-01 06:42:36,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e211cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:36, skipping insertion in model container [2023-09-01 06:42:36,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:42:36" (1/1) ... [2023-09-01 06:42:36,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:42:36,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:42:37,240 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2023-09-01 06:42:37,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:42:37,286 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:42:37,315 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2023-09-01 06:42:37,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:42:37,366 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 06:42:37,372 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:42:37,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37 WrapperNode [2023-09-01 06:42:37,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:42:37,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:42:37,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:42:37,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:42:37,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,414 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2023-09-01 06:42:37,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:42:37,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:42:37,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:42:37,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:42:37,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,437 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:42:37,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:42:37,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:42:37,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:42:37,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (1/1) ... [2023-09-01 06:42:37,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:42:37,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:42:37,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:42:37,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:42:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:42:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:42:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:42:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:42:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:42:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:42:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:42:37,538 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:42:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:42:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:42:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:42:37,540 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:42:37,711 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:42:37,729 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:42:38,017 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:42:38,024 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:42:38,028 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-09-01 06:42:38,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:42:38 BoogieIcfgContainer [2023-09-01 06:42:38,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:42:38,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:42:38,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:42:38,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:42:38,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:42:36" (1/3) ... [2023-09-01 06:42:38,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9d83bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:42:38, skipping insertion in model container [2023-09-01 06:42:38,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:37" (2/3) ... [2023-09-01 06:42:38,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9d83bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:42:38, skipping insertion in model container [2023-09-01 06:42:38,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:42:38" (3/3) ... [2023-09-01 06:42:38,039 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-09-01 06:42:38,046 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:42:38,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:42:38,055 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-09-01 06:42:38,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:42:38,155 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:42:38,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 168 transitions, 344 flow [2023-09-01 06:42:38,291 INFO L130 PetriNetUnfolder]: 24/204 cut-off events. [2023-09-01 06:42:38,291 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:42:38,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 204 events. 24/204 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 586 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-09-01 06:42:38,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 168 transitions, 344 flow [2023-09-01 06:42:38,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 159 transitions, 323 flow [2023-09-01 06:42:38,320 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:38,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 159 transitions, 323 flow [2023-09-01 06:42:38,342 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 159 transitions, 323 flow [2023-09-01 06:42:38,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 159 transitions, 323 flow [2023-09-01 06:42:38,385 INFO L130 PetriNetUnfolder]: 23/195 cut-off events. [2023-09-01 06:42:38,395 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:42:38,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 195 events. 23/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 572 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-09-01 06:42:38,400 INFO L119 LiptonReduction]: Number of co-enabled transitions 7176 [2023-09-01 06:42:41,973 INFO L134 LiptonReduction]: Checked pairs total: 12768 [2023-09-01 06:42:41,974 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-09-01 06:42:41,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:42,001 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3ab6e769, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:42,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:42,013 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2023-09-01 06:42:42,013 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:42:42,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:42,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:42:42,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:42,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:42,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1951037537, now seen corresponding path program 1 times [2023-09-01 06:42:42,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:42,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513599435] [2023-09-01 06:42:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:42,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:42,134 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:42,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:42,201 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:42,202 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:42,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:42:42,205 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:42,207 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:42,208 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:42,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:42:42,253 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:42:42,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 248 transitions, 514 flow [2023-09-01 06:42:42,335 INFO L130 PetriNetUnfolder]: 45/356 cut-off events. [2023-09-01 06:42:42,335 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:42:42,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 356 events. 45/356 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1305 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-09-01 06:42:42,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 248 transitions, 514 flow [2023-09-01 06:42:42,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 248 transitions, 514 flow [2023-09-01 06:42:42,347 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:42,347 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 248 transitions, 514 flow [2023-09-01 06:42:42,348 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 248 transitions, 514 flow [2023-09-01 06:42:42,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 248 transitions, 514 flow [2023-09-01 06:42:42,407 INFO L130 PetriNetUnfolder]: 45/356 cut-off events. [2023-09-01 06:42:42,408 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:42:42,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 356 events. 45/356 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1305 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-09-01 06:42:42,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 29484 [2023-09-01 06:42:46,294 INFO L134 LiptonReduction]: Checked pairs total: 91615 [2023-09-01 06:42:46,295 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-09-01 06:42:46,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:46,298 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3ab6e769, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:46,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:46,304 INFO L130 PetriNetUnfolder]: 13/81 cut-off events. [2023-09-01 06:42:46,305 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:42:46,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:46,305 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:42:46,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:46,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:46,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2109764218, now seen corresponding path program 1 times [2023-09-01 06:42:46,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:46,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130335005] [2023-09-01 06:42:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:46,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:46,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:46,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:46,458 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:46,459 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:42:46,459 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:46,460 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:46,460 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:46,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:42:46,492 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:42:46,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 328 transitions, 686 flow [2023-09-01 06:42:46,581 INFO L130 PetriNetUnfolder]: 71/547 cut-off events. [2023-09-01 06:42:46,581 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:42:46,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 547 events. 71/547 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2202 event pairs, 1 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 364. Up to 16 conditions per place. [2023-09-01 06:42:46,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 288 places, 328 transitions, 686 flow [2023-09-01 06:42:46,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 288 places, 328 transitions, 686 flow [2023-09-01 06:42:46,602 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:46,602 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 288 places, 328 transitions, 686 flow [2023-09-01 06:42:46,603 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 288 places, 328 transitions, 686 flow [2023-09-01 06:42:46,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 328 transitions, 686 flow [2023-09-01 06:42:46,711 INFO L130 PetriNetUnfolder]: 71/547 cut-off events. [2023-09-01 06:42:46,712 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:42:46,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 547 events. 71/547 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2202 event pairs, 1 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 364. Up to 16 conditions per place. [2023-09-01 06:42:46,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 63180 [2023-09-01 06:42:50,623 INFO L134 LiptonReduction]: Checked pairs total: 213285 [2023-09-01 06:42:50,624 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-09-01 06:42:50,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:50,626 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3ab6e769, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:50,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:50,641 INFO L130 PetriNetUnfolder]: 29/146 cut-off events. [2023-09-01 06:42:50,641 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:42:50,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:50,641 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:42:50,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:50,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:50,642 INFO L85 PathProgramCache]: Analyzing trace with hash 790685748, now seen corresponding path program 1 times [2023-09-01 06:42:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:50,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37242121] [2023-09-01 06:42:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:50,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:50,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:50,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:50,725 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:50,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:50,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:42:50,726 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:50,727 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:50,727 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:50,727 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:42:50,766 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:42:50,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 408 transitions, 860 flow [2023-09-01 06:42:50,946 INFO L130 PetriNetUnfolder]: 109/818 cut-off events. [2023-09-01 06:42:50,947 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:42:50,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 818 events. 109/818 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3633 event pairs, 6 based on Foata normal form. 0/639 useless extension candidates. Maximal degree in co-relation 567. Up to 32 conditions per place. [2023-09-01 06:42:50,960 INFO L82 GeneralOperation]: Start removeDead. Operand has 356 places, 408 transitions, 860 flow [2023-09-01 06:42:50,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 356 places, 408 transitions, 860 flow [2023-09-01 06:42:50,969 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:50,969 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 356 places, 408 transitions, 860 flow [2023-09-01 06:42:50,969 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 356 places, 408 transitions, 860 flow [2023-09-01 06:42:50,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 408 transitions, 860 flow [2023-09-01 06:42:51,137 INFO L130 PetriNetUnfolder]: 109/818 cut-off events. [2023-09-01 06:42:51,137 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:42:51,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 818 events. 109/818 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3633 event pairs, 6 based on Foata normal form. 0/639 useless extension candidates. Maximal degree in co-relation 567. Up to 32 conditions per place. [2023-09-01 06:42:51,187 INFO L119 LiptonReduction]: Number of co-enabled transitions 109512 [2023-09-01 06:42:55,602 INFO L134 LiptonReduction]: Checked pairs total: 332551 [2023-09-01 06:42:55,602 INFO L136 LiptonReduction]: Total number of compositions: 296 [2023-09-01 06:42:55,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:55,605 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3ab6e769, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:55,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:55,623 INFO L130 PetriNetUnfolder]: 41/206 cut-off events. [2023-09-01 06:42:55,624 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 06:42:55,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:55,624 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:55,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:55,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:55,625 INFO L85 PathProgramCache]: Analyzing trace with hash 922812295, now seen corresponding path program 1 times [2023-09-01 06:42:55,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:55,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716319890] [2023-09-01 06:42:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:55,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:55,654 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:55,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:55,674 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:55,675 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:55,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:42:55,675 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:55,676 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:55,676 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:55,676 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:42:55,707 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:42:55,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 424 places, 488 transitions, 1036 flow [2023-09-01 06:42:55,982 INFO L130 PetriNetUnfolder]: 175/1253 cut-off events. [2023-09-01 06:42:55,983 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:42:56,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1364 conditions, 1253 events. 175/1253 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 6288 event pairs, 23 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 863. Up to 80 conditions per place. [2023-09-01 06:42:56,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 424 places, 488 transitions, 1036 flow [2023-09-01 06:42:56,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 424 places, 488 transitions, 1036 flow [2023-09-01 06:42:56,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:56,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 424 places, 488 transitions, 1036 flow [2023-09-01 06:42:56,025 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 424 places, 488 transitions, 1036 flow [2023-09-01 06:42:56,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 424 places, 488 transitions, 1036 flow [2023-09-01 06:42:56,282 INFO L130 PetriNetUnfolder]: 175/1253 cut-off events. [2023-09-01 06:42:56,282 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:42:56,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1364 conditions, 1253 events. 175/1253 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 6288 event pairs, 23 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 863. Up to 80 conditions per place. [2023-09-01 06:42:56,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 168480 [2023-09-01 06:43:01,509 INFO L134 LiptonReduction]: Checked pairs total: 529594 [2023-09-01 06:43:01,509 INFO L136 LiptonReduction]: Total number of compositions: 358 [2023-09-01 06:43:01,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:01,514 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3ab6e769, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:01,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:01,539 INFO L130 PetriNetUnfolder]: 62/291 cut-off events. [2023-09-01 06:43:01,540 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 06:43:01,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:01,540 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:01,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:01,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:01,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1328840925, now seen corresponding path program 1 times [2023-09-01 06:43:01,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:01,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411110546] [2023-09-01 06:43:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:01,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:01,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:01,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:01,632 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:01,633 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:01,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:43:01,636 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:01,637 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:01,637 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:01,637 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:43:01,675 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:43:01,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 568 transitions, 1214 flow [2023-09-01 06:43:02,200 INFO L130 PetriNetUnfolder]: 305/2024 cut-off events. [2023-09-01 06:43:02,201 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:43:02,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 2024 events. 305/2024 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11905 event pairs, 72 based on Foata normal form. 0/1597 useless extension candidates. Maximal degree in co-relation 1352. Up to 192 conditions per place. [2023-09-01 06:43:02,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 492 places, 568 transitions, 1214 flow [2023-09-01 06:43:02,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 492 places, 568 transitions, 1214 flow [2023-09-01 06:43:02,262 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:02,262 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 492 places, 568 transitions, 1214 flow [2023-09-01 06:43:02,262 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 492 places, 568 transitions, 1214 flow [2023-09-01 06:43:02,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 568 transitions, 1214 flow [2023-09-01 06:43:02,797 INFO L130 PetriNetUnfolder]: 305/2024 cut-off events. [2023-09-01 06:43:02,797 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:43:02,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 2024 events. 305/2024 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11905 event pairs, 72 based on Foata normal form. 0/1597 useless extension candidates. Maximal degree in co-relation 1352. Up to 192 conditions per place. [2023-09-01 06:43:03,023 INFO L119 LiptonReduction]: Number of co-enabled transitions 240084 [2023-09-01 06:43:08,442 INFO L134 LiptonReduction]: Checked pairs total: 765146 [2023-09-01 06:43:08,442 INFO L136 LiptonReduction]: Total number of compositions: 407 [2023-09-01 06:43:08,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:08,448 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3ab6e769, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:08,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:08,491 INFO L130 PetriNetUnfolder]: 82/378 cut-off events. [2023-09-01 06:43:08,491 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-09-01 06:43:08,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:08,491 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:08,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:08,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash 726119521, now seen corresponding path program 1 times [2023-09-01 06:43:08,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:08,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555640382] [2023-09-01 06:43:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:08,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:08,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:08,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:08,537 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:08,537 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:08,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:43:08,538 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:08,538 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:08,539 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:08,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:43:08,586 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:43:08,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 560 places, 648 transitions, 1394 flow [2023-09-01 06:43:09,662 INFO L130 PetriNetUnfolder]: 579/3483 cut-off events. [2023-09-01 06:43:09,662 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:43:09,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 3483 events. 579/3483 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 24266 event pairs, 201 based on Foata normal form. 0/2772 useless extension candidates. Maximal degree in co-relation 2242. Up to 448 conditions per place. [2023-09-01 06:43:09,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 560 places, 648 transitions, 1394 flow [2023-09-01 06:43:09,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 560 places, 648 transitions, 1394 flow [2023-09-01 06:43:09,792 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:09,792 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 560 places, 648 transitions, 1394 flow [2023-09-01 06:43:09,793 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 560 places, 648 transitions, 1394 flow [2023-09-01 06:43:09,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 560 places, 648 transitions, 1394 flow [2023-09-01 06:43:10,719 INFO L130 PetriNetUnfolder]: 579/3483 cut-off events. [2023-09-01 06:43:10,719 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:43:10,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 3483 events. 579/3483 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 24266 event pairs, 201 based on Foata normal form. 0/2772 useless extension candidates. Maximal degree in co-relation 2242. Up to 448 conditions per place. [2023-09-01 06:43:11,116 INFO L119 LiptonReduction]: Number of co-enabled transitions 324324 [2023-09-01 06:43:17,145 INFO L134 LiptonReduction]: Checked pairs total: 1174851 [2023-09-01 06:43:17,146 INFO L136 LiptonReduction]: Total number of compositions: 464 [2023-09-01 06:43:17,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:17,150 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3ab6e769, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:17,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:17,202 INFO L130 PetriNetUnfolder]: 105/475 cut-off events. [2023-09-01 06:43:17,202 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 06:43:17,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:17,203 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:17,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:17,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1916999752, now seen corresponding path program 1 times [2023-09-01 06:43:17,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:17,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735401293] [2023-09-01 06:43:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:17,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:17,249 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:17,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:17,290 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:17,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:17,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:43:17,290 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:17,291 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:17,291 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:17,291 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:43:17,336 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:43:17,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 628 places, 728 transitions, 1576 flow [2023-09-01 06:43:19,350 INFO L130 PetriNetUnfolder]: 1173/6350 cut-off events. [2023-09-01 06:43:19,350 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:43:19,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7435 conditions, 6350 events. 1173/6350 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 52365 event pairs, 522 based on Foata normal form. 0/5099 useless extension candidates. Maximal degree in co-relation 3965. Up to 1024 conditions per place. [2023-09-01 06:43:19,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 628 places, 728 transitions, 1576 flow [2023-09-01 06:43:19,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 628 places, 728 transitions, 1576 flow [2023-09-01 06:43:19,581 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:19,581 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 628 places, 728 transitions, 1576 flow [2023-09-01 06:43:19,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 628 places, 728 transitions, 1576 flow [2023-09-01 06:43:19,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 628 places, 728 transitions, 1576 flow [2023-09-01 06:43:21,339 INFO L130 PetriNetUnfolder]: 1173/6350 cut-off events. [2023-09-01 06:43:21,339 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:43:21,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7435 conditions, 6350 events. 1173/6350 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 52365 event pairs, 522 based on Foata normal form. 0/5099 useless extension candidates. Maximal degree in co-relation 3965. Up to 1024 conditions per place. [2023-09-01 06:43:22,057 INFO L119 LiptonReduction]: Number of co-enabled transitions 421200 [2023-09-01 06:43:28,755 INFO L134 LiptonReduction]: Checked pairs total: 1517341 [2023-09-01 06:43:28,755 INFO L136 LiptonReduction]: Total number of compositions: 524 [2023-09-01 06:43:28,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:28,758 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3ab6e769, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:28,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:28,830 INFO L130 PetriNetUnfolder]: 133/591 cut-off events. [2023-09-01 06:43:28,830 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-09-01 06:43:28,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:28,830 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:28,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:28,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1203333266, now seen corresponding path program 1 times [2023-09-01 06:43:28,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:28,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951476236] [2023-09-01 06:43:28,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:28,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:28,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:28,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:28,872 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:28,872 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:28,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:43:28,873 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:28,873 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:28,873 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:28,873 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:43:28,917 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:43:28,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 696 places, 808 transitions, 1760 flow [2023-09-01 06:43:33,089 INFO L130 PetriNetUnfolder]: 2471/12097 cut-off events. [2023-09-01 06:43:33,089 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:43:33,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14474 conditions, 12097 events. 2471/12097 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 116460 event pairs, 1291 based on Foata normal form. 0/9794 useless extension candidates. Maximal degree in co-relation 7417. Up to 2304 conditions per place. [2023-09-01 06:43:33,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 696 places, 808 transitions, 1760 flow [2023-09-01 06:43:33,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 696 places, 808 transitions, 1760 flow [2023-09-01 06:43:33,633 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:33,633 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 696 places, 808 transitions, 1760 flow [2023-09-01 06:43:33,633 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 696 places, 808 transitions, 1760 flow [2023-09-01 06:43:33,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 696 places, 808 transitions, 1760 flow [2023-09-01 06:43:37,617 INFO L130 PetriNetUnfolder]: 2471/12097 cut-off events. [2023-09-01 06:43:37,617 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:43:38,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14474 conditions, 12097 events. 2471/12097 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 116460 event pairs, 1291 based on Foata normal form. 0/9794 useless extension candidates. Maximal degree in co-relation 7417. Up to 2304 conditions per place. [2023-09-01 06:43:39,129 INFO L119 LiptonReduction]: Number of co-enabled transitions 530712 [2023-09-01 06:43:46,271 INFO L134 LiptonReduction]: Checked pairs total: 1941910 [2023-09-01 06:43:46,271 INFO L136 LiptonReduction]: Total number of compositions: 568 [2023-09-01 06:43:46,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:46,273 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3ab6e769, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:46,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:46,365 INFO L130 PetriNetUnfolder]: 170/737 cut-off events. [2023-09-01 06:43:46,365 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-09-01 06:43:46,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:46,365 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:46,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:46,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash 164276619, now seen corresponding path program 1 times [2023-09-01 06:43:46,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:46,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759175027] [2023-09-01 06:43:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:46,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:46,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:46,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:46,415 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:46,416 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:46,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:43:46,416 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:46,417 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:46,417 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:46,417 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:43:46,478 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:43:46,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 764 places, 888 transitions, 1946 flow [2023-09-01 06:43:54,713 INFO L130 PetriNetUnfolder]: 5305/23732 cut-off events. [2023-09-01 06:43:54,714 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:43:56,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28938 conditions, 23732 events. 5305/23732 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 256472 event pairs, 3084 based on Foata normal form. 0/19353 useless extension candidates. Maximal degree in co-relation 14454. Up to 5120 conditions per place. [2023-09-01 06:43:56,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 764 places, 888 transitions, 1946 flow [2023-09-01 06:43:57,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 764 places, 888 transitions, 1946 flow [2023-09-01 06:43:57,041 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:57,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 764 places, 888 transitions, 1946 flow [2023-09-01 06:43:57,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 764 places, 888 transitions, 1946 flow [2023-09-01 06:43:57,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 764 places, 888 transitions, 1946 flow [2023-09-01 06:44:06,258 INFO L130 PetriNetUnfolder]: 5305/23732 cut-off events. [2023-09-01 06:44:06,258 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:44:07,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28938 conditions, 23732 events. 5305/23732 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 256472 event pairs, 3084 based on Foata normal form. 0/19353 useless extension candidates. Maximal degree in co-relation 14454. Up to 5120 conditions per place. [2023-09-01 06:44:09,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 652860 [2023-09-01 06:44:17,286 INFO L134 LiptonReduction]: Checked pairs total: 2130548 [2023-09-01 06:44:17,286 INFO L136 LiptonReduction]: Total number of compositions: 627 [2023-09-01 06:44:17,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:17,288 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3ab6e769, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:17,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:17,404 INFO L130 PetriNetUnfolder]: 222/926 cut-off events. [2023-09-01 06:44:17,405 INFO L131 PetriNetUnfolder]: For 371/371 co-relation queries the response was YES. [2023-09-01 06:44:17,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:17,405 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:17,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:17,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:17,405 INFO L85 PathProgramCache]: Analyzing trace with hash 369770767, now seen corresponding path program 1 times [2023-09-01 06:44:17,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:17,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788234714] [2023-09-01 06:44:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:17,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:17,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:17,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:17,448 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:17,449 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:17,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:44:17,449 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:17,449 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:17,450 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:17,450 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:44:17,504 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:44:17,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 832 places, 968 transitions, 2134 flow [2023-09-01 06:44:38,209 INFO L130 PetriNetUnfolder]: 11467/47399 cut-off events. [2023-09-01 06:44:38,210 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:44:41,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58763 conditions, 47399 events. 11467/47399 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 575723 event pairs, 7181 based on Foata normal form. 0/38896 useless extension candidates. Maximal degree in co-relation 28916. Up to 11264 conditions per place. [2023-09-01 06:44:41,246 INFO L82 GeneralOperation]: Start removeDead. Operand has 832 places, 968 transitions, 2134 flow [2023-09-01 06:44:42,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 832 places, 968 transitions, 2134 flow [2023-09-01 06:44:42,223 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:42,223 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 832 places, 968 transitions, 2134 flow [2023-09-01 06:44:42,223 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 832 places, 968 transitions, 2134 flow [2023-09-01 06:44:42,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 832 places, 968 transitions, 2134 flow [2023-09-01 06:45:04,381 INFO L130 PetriNetUnfolder]: 11467/47399 cut-off events. [2023-09-01 06:45:04,381 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:45:08,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58763 conditions, 47399 events. 11467/47399 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 575723 event pairs, 7181 based on Foata normal form. 0/38896 useless extension candidates. Maximal degree in co-relation 28916. Up to 11264 conditions per place.