./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.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_84-list2_racing2.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 f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c --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 07:02:37,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:02:37,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:02:37,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:02:37,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:02:37,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:02:37,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:02:37,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:02:37,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:02:37,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:02:37,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:02:37,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:02:37,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:02:37,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:02:37,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:02:37,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:02:37,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:02:37,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:02:37,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:02:37,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:02:37,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:02:37,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:02:37,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:02:37,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:02:37,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:02:37,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:02:37,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:02:37,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:02:37,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:02:37,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:02:37,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:02:37,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:02:37,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:02:37,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:02:37,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:02:37,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:02:37,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:02:37,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:02:37,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:02:37,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:02:37,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:02:37,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:02:37,792 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:02:37,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:02:37,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:02:37,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:02:37,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:02:37,795 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:02:37,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:02:37,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:02:37,796 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:02:37,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:02:37,797 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:02:37,797 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:02:37,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:02:37,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:02:37,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:02:37,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:02:37,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:02:37,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:02:37,799 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:02:37,799 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:02:37,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:02:37,799 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:02:37,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:02:37,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:02:37,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:02:37,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:02:37,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:02:37,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:02:37,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:02:37,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:02:37,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:02:37,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:02:37,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:02:37,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:02:37,802 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:02:37,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:02:37,802 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:02:37,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:02:38,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:02:38,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:02:38,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:02:38,133 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:02:38,134 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:02:38,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-09-01 07:02:39,360 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:02:39,652 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:02:39,652 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-09-01 07:02:39,666 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24768ba48/f5e493a073b649b790386b7173022240/FLAG6418dec83 [2023-09-01 07:02:39,689 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24768ba48/f5e493a073b649b790386b7173022240 [2023-09-01 07:02:39,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:02:39,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:02:39,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:02:39,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:02:39,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:02:39,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:02:39" (1/1) ... [2023-09-01 07:02:39,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e7d577d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:39, skipping insertion in model container [2023-09-01 07:02:39,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:02:39" (1/1) ... [2023-09-01 07:02:39,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:02:39,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:02:40,125 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_84-list2_racing2.i[47038,47051] [2023-09-01 07:02:40,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:02:40,183 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:02:40,282 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_84-list2_racing2.i[47038,47051] [2023-09-01 07:02:40,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:02:40,374 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:02:40,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40 WrapperNode [2023-09-01 07:02:40,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:02:40,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:02:40,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:02:40,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:02:40,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,439 INFO L138 Inliner]: procedures = 279, calls = 88, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 404 [2023-09-01 07:02:40,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:02:40,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:02:40,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:02:40,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:02:40,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,484 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:02:40,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:02:40,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:02:40,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:02:40,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (1/1) ... [2023-09-01 07:02:40,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:02:40,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:02:40,535 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 07:02:40,537 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 07:02:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:02:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 07:02:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 07:02:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 07:02:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:02:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:02:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 07:02:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 07:02:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:02:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 07:02:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:02:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:02:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 07:02:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-09-01 07:02:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-09-01 07:02:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:02:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:02:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:02:40,564 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 07:02:40,769 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:02:40,771 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:02:41,267 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:02:41,278 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:02:41,279 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-09-01 07:02:41,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:02:41 BoogieIcfgContainer [2023-09-01 07:02:41,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:02:41,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:02:41,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:02:41,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:02:41,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:02:39" (1/3) ... [2023-09-01 07:02:41,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdbd4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:02:41, skipping insertion in model container [2023-09-01 07:02:41,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:40" (2/3) ... [2023-09-01 07:02:41,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdbd4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:02:41, skipping insertion in model container [2023-09-01 07:02:41,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:02:41" (3/3) ... [2023-09-01 07:02:41,290 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-09-01 07:02:41,299 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:02:41,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:02:41,310 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-09-01 07:02:41,310 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:02:41,454 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 07:02:41,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 431 transitions, 904 flow [2023-09-01 07:02:42,007 INFO L130 PetriNetUnfolder]: 188/1569 cut-off events. [2023-09-01 07:02:42,007 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 07:02:42,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 1569 events. 188/1569 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10439 event pairs, 0 based on Foata normal form. 0/1299 useless extension candidates. Maximal degree in co-relation 798. Up to 16 conditions per place. [2023-09-01 07:02:42,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 390 places, 431 transitions, 904 flow [2023-09-01 07:02:42,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 388 places, 429 transitions, 900 flow [2023-09-01 07:02:42,063 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:02:42,084 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 388 places, 429 transitions, 900 flow [2023-09-01 07:02:42,091 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 388 places, 429 transitions, 900 flow [2023-09-01 07:02:42,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 388 places, 429 transitions, 900 flow [2023-09-01 07:02:42,443 INFO L130 PetriNetUnfolder]: 188/1567 cut-off events. [2023-09-01 07:02:42,444 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 07:02:42,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 1567 events. 188/1567 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10411 event pairs, 0 based on Foata normal form. 0/1299 useless extension candidates. Maximal degree in co-relation 798. Up to 16 conditions per place. [2023-09-01 07:02:42,551 INFO L119 LiptonReduction]: Number of co-enabled transitions 82906 [2023-09-01 07:02:57,351 INFO L134 LiptonReduction]: Checked pairs total: 154037 [2023-09-01 07:02:57,351 INFO L136 LiptonReduction]: Total number of compositions: 357 [2023-09-01 07:02:57,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:02:57,370 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;@4a1c9cd5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:02:57,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 07:02:57,377 INFO L130 PetriNetUnfolder]: 4/37 cut-off events. [2023-09-01 07:02:57,378 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:02:57,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:02:57,379 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 07:02:57,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 07:02:57,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:02:57,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1575612015, now seen corresponding path program 1 times [2023-09-01 07:02:57,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:02:57,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341025419] [2023-09-01 07:02:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:02:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:02:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:57,569 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:02:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:57,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:02:57,673 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:02:57,675 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 07:02:57,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 07:02:57,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 07:02:57,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:02:57,678 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:02:57,684 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 07:02:57,685 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:02:57,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 07:02:57,784 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-09-01 07:02:57,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 586 places, 660 transitions, 1410 flow [2023-09-01 07:03:00,414 INFO L130 PetriNetUnfolder]: 1211/7672 cut-off events. [2023-09-01 07:03:00,415 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2023-09-01 07:03:00,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8346 conditions, 7672 events. 1211/7672 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 72407 event pairs, 22 based on Foata normal form. 0/6243 useless extension candidates. Maximal degree in co-relation 4766. Up to 192 conditions per place. [2023-09-01 07:03:00,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 586 places, 660 transitions, 1410 flow [2023-09-01 07:03:00,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 584 places, 658 transitions, 1406 flow [2023-09-01 07:03:00,703 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:03:00,703 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 584 places, 658 transitions, 1406 flow [2023-09-01 07:03:00,704 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 584 places, 658 transitions, 1406 flow [2023-09-01 07:03:00,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 584 places, 658 transitions, 1406 flow [2023-09-01 07:03:03,229 INFO L130 PetriNetUnfolder]: 1211/7668 cut-off events. [2023-09-01 07:03:03,229 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2023-09-01 07:03:03,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8342 conditions, 7668 events. 1211/7668 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 72298 event pairs, 22 based on Foata normal form. 0/6243 useless extension candidates. Maximal degree in co-relation 4764. Up to 192 conditions per place. [2023-09-01 07:03:04,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 268832 [2023-09-01 07:03:23,207 INFO L134 LiptonReduction]: Checked pairs total: 566741 [2023-09-01 07:03:23,207 INFO L136 LiptonReduction]: Total number of compositions: 529 [2023-09-01 07:03:23,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:03:23,211 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;@4a1c9cd5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:03:23,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 07:03:23,225 INFO L130 PetriNetUnfolder]: 22/135 cut-off events. [2023-09-01 07:03:23,225 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 07:03:23,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:03:23,225 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 07:03:23,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 07:03:23,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:03:23,226 INFO L85 PathProgramCache]: Analyzing trace with hash 509168543, now seen corresponding path program 1 times [2023-09-01 07:03:23,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:03:23,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873780832] [2023-09-01 07:03:23,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:03:23,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:03:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:03:23,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:03:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:03:23,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:03:23,302 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:03:23,302 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 07:03:23,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 07:03:23,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 07:03:23,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:03:23,303 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:03:23,304 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 07:03:23,304 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:03:23,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 07:03:23,402 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-09-01 07:03:23,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 782 places, 889 transitions, 1922 flow [2023-09-01 07:03:44,027 INFO L130 PetriNetUnfolder]: 9176/40803 cut-off events. [2023-09-01 07:03:44,028 INFO L131 PetriNetUnfolder]: For 7059/7059 co-relation queries the response was YES. [2023-09-01 07:03:46,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47977 conditions, 40803 events. 9176/40803 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 478538 event pairs, 1024 based on Foata normal form. 0/33039 useless extension candidates. Maximal degree in co-relation 25730. Up to 2304 conditions per place. [2023-09-01 07:03:46,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 782 places, 889 transitions, 1922 flow [2023-09-01 07:03:47,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 780 places, 887 transitions, 1918 flow [2023-09-01 07:03:47,782 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:03:47,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 780 places, 887 transitions, 1918 flow [2023-09-01 07:03:47,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 780 places, 887 transitions, 1918 flow [2023-09-01 07:03:47,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 780 places, 887 transitions, 1918 flow [2023-09-01 07:04:07,515 INFO L130 PetriNetUnfolder]: 9176/40797 cut-off events. [2023-09-01 07:04:07,515 INFO L131 PetriNetUnfolder]: For 7059/7059 co-relation queries the response was YES. [2023-09-01 07:04:10,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47971 conditions, 40797 events. 9176/40797 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 478622 event pairs, 1024 based on Foata normal form. 0/33039 useless extension candidates. Maximal degree in co-relation 25726. Up to 2304 conditions per place. [2023-09-01 07:04:15,313 INFO L119 LiptonReduction]: Number of co-enabled transitions 557778 [2023-09-01 07:04:35,794 INFO L134 LiptonReduction]: Checked pairs total: 1229160 [2023-09-01 07:04:35,795 INFO L136 LiptonReduction]: Total number of compositions: 721 [2023-09-01 07:04:35,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:04:35,804 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;@4a1c9cd5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:04:35,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 07:04:35,828 INFO L130 PetriNetUnfolder]: 79/387 cut-off events. [2023-09-01 07:04:35,828 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 07:04:35,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:04:35,828 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 07:04:35,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 07:04:35,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:04:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1851587327, now seen corresponding path program 1 times [2023-09-01 07:04:35,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:04:35,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148219738] [2023-09-01 07:04:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:04:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:04:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:04:35,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:04:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:04:35,944 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:04:35,945 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:04:35,946 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 07:04:35,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 07:04:35,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 07:04:35,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:04:35,946 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:04:35,947 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 07:04:35,947 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:04:35,947 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 07:04:36,050 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-09-01 07:04:36,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 978 places, 1118 transitions, 2440 flow