./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.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_85-list2_racefree.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 da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b --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 07:05:20,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:05:20,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:05:20,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:05:20,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:05:20,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:05:20,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:05:20,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:05:20,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:05:20,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:05:20,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:05:20,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:05:20,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:05:20,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:05:20,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:05:20,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:05:20,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:05:20,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:05:20,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:05:20,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:05:20,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:05:20,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:05:20,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:05:20,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:05:20,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:05:20,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:05:20,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:05:20,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:05:20,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:05:20,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:05:20,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:05:20,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:05:20,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:05:20,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:05:20,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:05:20,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:05:20,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:05:20,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:05:20,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:05:20,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:05:20,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:05:20,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:05:20,407 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:05:20,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:05:20,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:05:20,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:05:20,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:05:20,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:05:20,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:05:20,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:05:20,410 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:05:20,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:05:20,411 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:05:20,411 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:05:20,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:05:20,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:05:20,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:05:20,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:05:20,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:05:20,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:05:20,413 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:05:20,413 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:05:20,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:05:20,413 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:05:20,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:05:20,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:05:20,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:05:20,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:05:20,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:05:20,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:05:20,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:05:20,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:05:20,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:05:20,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:05:20,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:05:20,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:05:20,415 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:05:20,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:05:20,416 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:05:20,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:05:20,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:05:20,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:05:20,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:05:20,741 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:05:20,741 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:05:20,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-09-01 07:05:21,974 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:05:22,225 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:05:22,226 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-09-01 07:05:22,242 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d92a10b7/48b9424d5d054a92b6e03fbc5af3d53c/FLAGb498c1c2d [2023-09-01 07:05:22,260 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d92a10b7/48b9424d5d054a92b6e03fbc5af3d53c [2023-09-01 07:05:22,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:05:22,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:05:22,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:05:22,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:05:22,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:05:22,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:22,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e9702e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22, skipping insertion in model container [2023-09-01 07:05:22,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:22,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:05:22,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:05:22,716 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_85-list2_racefree.i[47038,47051] [2023-09-01 07:05:22,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:05:22,783 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:05:22,824 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_85-list2_racefree.i[47038,47051] [2023-09-01 07:05:22,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:05:22,938 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:05:22,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22 WrapperNode [2023-09-01 07:05:22,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:05:22,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:05:22,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:05:22,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:05:22,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:22,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:23,016 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 364 [2023-09-01 07:05:23,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:05:23,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:05:23,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:05:23,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:05:23,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:23,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:23,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:23,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:23,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:23,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:23,087 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:23,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:23,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:05:23,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:05:23,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:05:23,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:05:23,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (1/1) ... [2023-09-01 07:05:23,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:05:23,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:05:23,138 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 07:05:23,159 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 07:05:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:05:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 07:05:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 07:05:23,174 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 07:05:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:05:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:05:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 07:05:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 07:05:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:05:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 07:05:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:05:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:05:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 07:05:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-09-01 07:05:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-09-01 07:05:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:05:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:05:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:05:23,178 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 07:05:23,396 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:05:23,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:05:23,841 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:05:23,856 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:05:23,856 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-09-01 07:05:23,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:05:23 BoogieIcfgContainer [2023-09-01 07:05:23,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:05:23,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:05:23,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:05:23,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:05:23,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:05:22" (1/3) ... [2023-09-01 07:05:23,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772e3587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:05:23, skipping insertion in model container [2023-09-01 07:05:23,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:05:22" (2/3) ... [2023-09-01 07:05:23,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772e3587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:05:23, skipping insertion in model container [2023-09-01 07:05:23,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:05:23" (3/3) ... [2023-09-01 07:05:23,867 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-09-01 07:05:23,873 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:05:23,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:05:23,881 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-09-01 07:05:23,881 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:05:24,022 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 07:05:24,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 388 transitions, 818 flow [2023-09-01 07:05:24,379 INFO L130 PetriNetUnfolder]: 164/1225 cut-off events. [2023-09-01 07:05:24,379 INFO L131 PetriNetUnfolder]: For 36/57 co-relation queries the response was YES. [2023-09-01 07:05:24,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 1225 events. 164/1225 cut-off events. For 36/57 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7898 event pairs, 0 based on Foata normal form. 0/979 useless extension candidates. Maximal degree in co-relation 626. Up to 16 conditions per place. [2023-09-01 07:05:24,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 388 transitions, 818 flow [2023-09-01 07:05:24,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 348 places, 386 transitions, 814 flow [2023-09-01 07:05:24,418 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:05:24,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 348 places, 386 transitions, 814 flow [2023-09-01 07:05:24,435 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 348 places, 386 transitions, 814 flow [2023-09-01 07:05:24,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 386 transitions, 814 flow [2023-09-01 07:05:24,671 INFO L130 PetriNetUnfolder]: 164/1223 cut-off events. [2023-09-01 07:05:24,671 INFO L131 PetriNetUnfolder]: For 36/57 co-relation queries the response was YES. [2023-09-01 07:05:24,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 1223 events. 164/1223 cut-off events. For 36/57 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7862 event pairs, 0 based on Foata normal form. 0/979 useless extension candidates. Maximal degree in co-relation 626. Up to 16 conditions per place. [2023-09-01 07:05:24,738 INFO L119 LiptonReduction]: Number of co-enabled transitions 64244 [2023-09-01 07:05:37,927 INFO L134 LiptonReduction]: Checked pairs total: 123625 [2023-09-01 07:05:37,928 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-09-01 07:05:37,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:05:37,955 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;@fc984b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:05:37,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 07:05:37,961 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2023-09-01 07:05:37,961 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:05:37,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:05:37,962 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 07:05:37,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 07:05:37,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:05:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1768868646, now seen corresponding path program 1 times [2023-09-01 07:05:37,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:05:37,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631216083] [2023-09-01 07:05:37,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:05:37,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:05:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:05:38,161 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:05:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:05:38,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:05:38,256 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:05:38,257 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 07:05:38,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 07:05:38,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 07:05:38,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:05:38,259 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:05:38,263 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 07:05:38,263 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:05:38,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 07:05:38,362 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-09-01 07:05:38,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 617 transitions, 1324 flow [2023-09-01 07:05:40,760 INFO L130 PetriNetUnfolder]: 1130/6511 cut-off events. [2023-09-01 07:05:40,761 INFO L131 PetriNetUnfolder]: For 602/683 co-relation queries the response was YES. [2023-09-01 07:05:40,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7185 conditions, 6511 events. 1130/6511 cut-off events. For 602/683 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 62278 event pairs, 22 based on Foata normal form. 0/5163 useless extension candidates. Maximal degree in co-relation 3992. Up to 192 conditions per place. [2023-09-01 07:05:40,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 617 transitions, 1324 flow [2023-09-01 07:05:41,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 544 places, 615 transitions, 1320 flow [2023-09-01 07:05:41,128 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:05:41,128 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 544 places, 615 transitions, 1320 flow [2023-09-01 07:05:41,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 544 places, 615 transitions, 1320 flow [2023-09-01 07:05:41,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 615 transitions, 1320 flow [2023-09-01 07:05:42,792 INFO L130 PetriNetUnfolder]: 1130/6507 cut-off events. [2023-09-01 07:05:42,793 INFO L131 PetriNetUnfolder]: For 602/683 co-relation queries the response was YES. [2023-09-01 07:05:42,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7181 conditions, 6507 events. 1130/6507 cut-off events. For 602/683 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 62447 event pairs, 22 based on Foata normal form. 0/5163 useless extension candidates. Maximal degree in co-relation 3990. Up to 192 conditions per place. [2023-09-01 07:05:43,528 INFO L119 LiptonReduction]: Number of co-enabled transitions 231508 [2023-09-01 07:05:58,375 INFO L134 LiptonReduction]: Checked pairs total: 499675 [2023-09-01 07:05:58,376 INFO L136 LiptonReduction]: Total number of compositions: 487 [2023-09-01 07:05:58,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:05:58,379 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;@fc984b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:05:58,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 07:05:58,393 INFO L130 PetriNetUnfolder]: 27/175 cut-off events. [2023-09-01 07:05:58,393 INFO L131 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2023-09-01 07:05:58,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:05:58,394 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 07:05:58,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 07:05:58,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:05:58,394 INFO L85 PathProgramCache]: Analyzing trace with hash 379621256, now seen corresponding path program 1 times [2023-09-01 07:05:58,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:05:58,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910347334] [2023-09-01 07:05:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:05:58,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:05:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:05:58,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:05:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:05:58,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:05:58,487 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:05:58,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 07:05:58,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 07:05:58,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 07:05:58,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:05:58,488 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:05:58,489 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 07:05:58,489 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:05:58,489 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 07:05:58,569 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-09-01 07:05:58,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 742 places, 846 transitions, 1836 flow [2023-09-01 07:06:16,175 INFO L130 PetriNetUnfolder]: 8984/38051 cut-off events. [2023-09-01 07:06:16,176 INFO L131 PetriNetUnfolder]: For 7059/7254 co-relation queries the response was YES. [2023-09-01 07:06:18,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45225 conditions, 38051 events. 8984/38051 cut-off events. For 7059/7254 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 450772 event pairs, 912 based on Foata normal form. 0/30479 useless extension candidates. Maximal degree in co-relation 23666. Up to 2304 conditions per place. [2023-09-01 07:06:18,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 742 places, 846 transitions, 1836 flow [2023-09-01 07:06:19,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 740 places, 844 transitions, 1832 flow [2023-09-01 07:06:19,564 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:06:19,565 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 740 places, 844 transitions, 1832 flow [2023-09-01 07:06:19,565 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 740 places, 844 transitions, 1832 flow [2023-09-01 07:06:19,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 740 places, 844 transitions, 1832 flow [2023-09-01 07:06:35,662 INFO L130 PetriNetUnfolder]: 8984/38045 cut-off events. [2023-09-01 07:06:35,662 INFO L131 PetriNetUnfolder]: For 7059/7254 co-relation queries the response was YES. [2023-09-01 07:06:37,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45219 conditions, 38045 events. 8984/38045 cut-off events. For 7059/7254 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 451079 event pairs, 912 based on Foata normal form. 0/30479 useless extension candidates. Maximal degree in co-relation 23662. Up to 2304 conditions per place. [2023-09-01 07:06:41,887 INFO L119 LiptonReduction]: Number of co-enabled transitions 501792 [2023-09-01 07:07:00,386 INFO L134 LiptonReduction]: Checked pairs total: 1130168 [2023-09-01 07:07:00,386 INFO L136 LiptonReduction]: Total number of compositions: 677 [2023-09-01 07:07:00,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:07:00,390 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;@fc984b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:07:00,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 07:07:00,409 INFO L130 PetriNetUnfolder]: 71/369 cut-off events. [2023-09-01 07:07:00,410 INFO L131 PetriNetUnfolder]: For 49/63 co-relation queries the response was YES. [2023-09-01 07:07:00,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:07:00,410 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 07:07:00,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 07:07:00,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:07:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash -546376020, now seen corresponding path program 1 times [2023-09-01 07:07:00,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:07:00,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273169567] [2023-09-01 07:07:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:07:00,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:07:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:07:00,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:07:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:07:00,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:07:00,502 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:07:00,502 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 07:07:00,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 07:07:00,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 07:07:00,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:07:00,503 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:07:00,504 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 07:07:00,504 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:07:00,504 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 07:07:00,598 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-09-01 07:07:00,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 938 places, 1075 transitions, 2354 flow