./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --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 07:01:24,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:01:24,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:01:24,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:01:24,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:01:24,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:01:24,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:01:24,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:01:24,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:01:24,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:01:24,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:01:24,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:01:24,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:01:24,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:01:24,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:01:24,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:01:24,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:01:24,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:01:24,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:01:24,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:01:24,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:01:24,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:01:24,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:01:24,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:01:24,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:01:24,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:01:24,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:01:24,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:01:24,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:01:24,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:01:24,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:01:24,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:01:24,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:01:24,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:01:24,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:01:24,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:01:24,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:01:24,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:01:24,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:01:24,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:01:24,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:01:24,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:01:24,375 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:01:24,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:01:24,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:01:24,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:01:24,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:01:24,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:01:24,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:01:24,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:01:24,379 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:01:24,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:01:24,380 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:01:24,380 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:01:24,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:01:24,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:01:24,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:01:24,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:01:24,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:01:24,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:01:24,382 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:01:24,382 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:01:24,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:01:24,382 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:01:24,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:01:24,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:01:24,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:01:24,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:01:24,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:01:24,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:01:24,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:01:24,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:01:24,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:01:24,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:01:24,385 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:01:24,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:01:24,385 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:01:24,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:01:24,386 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:01:24,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:01:24,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:01:24,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:01:24,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:01:24,740 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:01:24,740 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:01:24,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-09-01 07:01:25,925 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:01:26,249 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:01:26,254 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-09-01 07:01:26,270 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/226c7314a/67a446c6466040d2835725e7c25bdb5a/FLAGdc102280f [2023-09-01 07:01:26,286 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/226c7314a/67a446c6466040d2835725e7c25bdb5a [2023-09-01 07:01:26,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:01:26,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:01:26,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:01:26,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:01:26,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:01:26,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:01:26" (1/1) ... [2023-09-01 07:01:26,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7589347f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:26, skipping insertion in model container [2023-09-01 07:01:26,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:01:26" (1/1) ... [2023-09-01 07:01:26,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:01:26,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:01:26,812 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_81-list_racing.i[47038,47051] [2023-09-01 07:01:26,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:01:26,888 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:01:26,950 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_81-list_racing.i[47038,47051] [2023-09-01 07:01:26,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:01:27,084 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:01:27,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27 WrapperNode [2023-09-01 07:01:27,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:01:27,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:01:27,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:01:27,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:01:27,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,170 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 218 [2023-09-01 07:01:27,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:01:27,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:01:27,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:01:27,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:01:27,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,222 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:01:27,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:01:27,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:01:27,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:01:27,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (1/1) ... [2023-09-01 07:01:27,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:01:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:01:27,263 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 07:01:27,287 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 07:01:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:01:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 07:01:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 07:01:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 07:01:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:01:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:01:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 07:01:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 07:01:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:01:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 07:01:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:01:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:01:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 07:01:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:01:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:01:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:01:27,312 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 07:01:27,518 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:01:27,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:01:27,836 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:01:27,849 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:01:27,852 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-09-01 07:01:27,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:01:27 BoogieIcfgContainer [2023-09-01 07:01:27,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:01:27,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:01:27,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:01:27,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:01:27,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:01:26" (1/3) ... [2023-09-01 07:01:27,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6f69ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:01:27, skipping insertion in model container [2023-09-01 07:01:27,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:27" (2/3) ... [2023-09-01 07:01:27,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6f69ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:01:27, skipping insertion in model container [2023-09-01 07:01:27,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:01:27" (3/3) ... [2023-09-01 07:01:27,865 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-09-01 07:01:27,873 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:01:27,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:01:27,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-09-01 07:01:27,882 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:01:28,031 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 07:01:28,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 232 transitions, 486 flow [2023-09-01 07:01:28,213 INFO L130 PetriNetUnfolder]: 52/448 cut-off events. [2023-09-01 07:01:28,213 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-09-01 07:01:28,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 448 events. 52/448 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1863 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 224. Up to 8 conditions per place. [2023-09-01 07:01:28,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 232 transitions, 486 flow [2023-09-01 07:01:28,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 228 transitions, 472 flow [2023-09-01 07:01:28,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:01:28,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 228 transitions, 472 flow [2023-09-01 07:01:28,258 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 228 transitions, 472 flow [2023-09-01 07:01:28,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 228 transitions, 472 flow [2023-09-01 07:01:28,341 INFO L130 PetriNetUnfolder]: 48/426 cut-off events. [2023-09-01 07:01:28,342 INFO L131 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2023-09-01 07:01:28,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 426 events. 48/426 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1721 event pairs, 0 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-09-01 07:01:28,358 INFO L119 LiptonReduction]: Number of co-enabled transitions 15916 [2023-09-01 07:01:35,463 INFO L134 LiptonReduction]: Checked pairs total: 28149 [2023-09-01 07:01:35,464 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-09-01 07:01:35,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:01:35,487 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;@21d95b94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:01:35,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 07:01:35,494 INFO L130 PetriNetUnfolder]: 2/30 cut-off events. [2023-09-01 07:01:35,494 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:01:35,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:01:35,495 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 07:01:35,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:01:35,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:01:35,500 INFO L85 PathProgramCache]: Analyzing trace with hash 981494965, now seen corresponding path program 1 times [2023-09-01 07:01:35,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:01:35,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815278348] [2023-09-01 07:01:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:01:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:01:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:35,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:01:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:35,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:01:35,769 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:01:35,771 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 07:01:35,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 07:01:35,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:01:35,774 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:01:35,777 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 07:01:35,779 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:01:35,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 07:01:35,840 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 07:01:35,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 320 places, 353 transitions, 754 flow [2023-09-01 07:01:36,091 INFO L130 PetriNetUnfolder]: 191/1373 cut-off events. [2023-09-01 07:01:36,092 INFO L131 PetriNetUnfolder]: For 72/88 co-relation queries the response was YES. [2023-09-01 07:01:36,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 1373 events. 191/1373 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8734 event pairs, 2 based on Foata normal form. 0/1095 useless extension candidates. Maximal degree in co-relation 849. Up to 32 conditions per place. [2023-09-01 07:01:36,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 320 places, 353 transitions, 754 flow [2023-09-01 07:01:36,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 351 transitions, 750 flow [2023-09-01 07:01:36,120 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:01:36,121 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 351 transitions, 750 flow [2023-09-01 07:01:36,121 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 351 transitions, 750 flow [2023-09-01 07:01:36,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 351 transitions, 750 flow [2023-09-01 07:01:36,364 INFO L130 PetriNetUnfolder]: 191/1369 cut-off events. [2023-09-01 07:01:36,365 INFO L131 PetriNetUnfolder]: For 72/88 co-relation queries the response was YES. [2023-09-01 07:01:36,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 1369 events. 191/1369 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8699 event pairs, 2 based on Foata normal form. 0/1095 useless extension candidates. Maximal degree in co-relation 847. Up to 32 conditions per place. [2023-09-01 07:01:36,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 62100 [2023-09-01 07:01:44,023 INFO L134 LiptonReduction]: Checked pairs total: 135355 [2023-09-01 07:01:44,024 INFO L136 LiptonReduction]: Total number of compositions: 281 [2023-09-01 07:01:44,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:01:44,026 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;@21d95b94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:01:44,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 07:01:44,039 INFO L130 PetriNetUnfolder]: 18/116 cut-off events. [2023-09-01 07:01:44,040 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 07:01:44,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:01:44,040 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 07:01:44,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:01:44,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:01:44,042 INFO L85 PathProgramCache]: Analyzing trace with hash -573665924, now seen corresponding path program 1 times [2023-09-01 07:01:44,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:01:44,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673033786] [2023-09-01 07:01:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:01:44,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:01:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:44,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:01:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:44,161 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:01:44,161 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:01:44,162 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 07:01:44,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 07:01:44,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:01:44,162 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:01:44,163 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 07:01:44,163 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:01:44,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 07:01:44,219 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 07:01:44,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 426 places, 474 transitions, 1026 flow [2023-09-01 07:01:45,334 INFO L130 PetriNetUnfolder]: 664/3932 cut-off events. [2023-09-01 07:01:45,334 INFO L131 PetriNetUnfolder]: For 419/449 co-relation queries the response was YES. [2023-09-01 07:01:45,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 3932 events. 664/3932 cut-off events. For 419/449 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 31255 event pairs, 64 based on Foata normal form. 0/3126 useless extension candidates. Maximal degree in co-relation 2508. Up to 192 conditions per place. [2023-09-01 07:01:45,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 426 places, 474 transitions, 1026 flow [2023-09-01 07:01:45,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 424 places, 472 transitions, 1022 flow [2023-09-01 07:01:45,438 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:01:45,439 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 424 places, 472 transitions, 1022 flow [2023-09-01 07:01:45,439 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 424 places, 472 transitions, 1022 flow [2023-09-01 07:01:45,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 424 places, 472 transitions, 1022 flow [2023-09-01 07:01:46,623 INFO L130 PetriNetUnfolder]: 664/3926 cut-off events. [2023-09-01 07:01:46,624 INFO L131 PetriNetUnfolder]: For 419/449 co-relation queries the response was YES. [2023-09-01 07:01:46,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4377 conditions, 3926 events. 664/3926 cut-off events. For 419/449 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 31079 event pairs, 64 based on Foata normal form. 0/3126 useless extension candidates. Maximal degree in co-relation 2504. Up to 192 conditions per place. [2023-09-01 07:01:46,928 INFO L119 LiptonReduction]: Number of co-enabled transitions 136068 [2023-09-01 07:01:56,230 INFO L134 LiptonReduction]: Checked pairs total: 303869 [2023-09-01 07:01:56,231 INFO L136 LiptonReduction]: Total number of compositions: 379 [2023-09-01 07:01:56,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:01:56,234 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;@21d95b94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:01:56,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 07:01:56,250 INFO L130 PetriNetUnfolder]: 44/223 cut-off events. [2023-09-01 07:01:56,250 INFO L131 PetriNetUnfolder]: For 26/30 co-relation queries the response was YES. [2023-09-01 07:01:56,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:01:56,250 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 07:01:56,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:01:56,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:01:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash 202935275, now seen corresponding path program 1 times [2023-09-01 07:01:56,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:01:56,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547875522] [2023-09-01 07:01:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:01:56,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:01:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:56,285 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:01:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:56,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:01:56,319 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:01:56,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 07:01:56,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 07:01:56,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:01:56,320 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:01:56,321 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 07:01:56,321 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:01:56,321 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 07:01:56,384 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 07:01:56,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 532 places, 595 transitions, 1302 flow [2023-09-01 07:02:00,539 INFO L130 PetriNetUnfolder]: 2659/12661 cut-off events. [2023-09-01 07:02:00,539 INFO L131 PetriNetUnfolder]: For 2144/2192 co-relation queries the response was YES. [2023-09-01 07:02:00,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14826 conditions, 12661 events. 2659/12661 cut-off events. For 2144/2192 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 122843 event pairs, 626 based on Foata normal form. 0/10129 useless extension candidates. Maximal degree in co-relation 7904. Up to 1024 conditions per place. [2023-09-01 07:02:00,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 532 places, 595 transitions, 1302 flow [2023-09-01 07:02:00,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 530 places, 593 transitions, 1298 flow [2023-09-01 07:02:00,970 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:02:00,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 530 places, 593 transitions, 1298 flow [2023-09-01 07:02:00,971 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 530 places, 593 transitions, 1298 flow [2023-09-01 07:02:00,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 530 places, 593 transitions, 1298 flow [2023-09-01 07:02:04,752 INFO L130 PetriNetUnfolder]: 2659/12653 cut-off events. [2023-09-01 07:02:04,752 INFO L131 PetriNetUnfolder]: For 2144/2192 co-relation queries the response was YES. [2023-09-01 07:02:05,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14818 conditions, 12653 events. 2659/12653 cut-off events. For 2144/2192 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 122670 event pairs, 626 based on Foata normal form. 0/10129 useless extension candidates. Maximal degree in co-relation 7898. Up to 1024 conditions per place. [2023-09-01 07:02:06,114 INFO L119 LiptonReduction]: Number of co-enabled transitions 238648 [2023-09-01 07:02:16,276 INFO L134 LiptonReduction]: Checked pairs total: 537558 [2023-09-01 07:02:16,277 INFO L136 LiptonReduction]: Total number of compositions: 468 [2023-09-01 07:02:16,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:02:16,285 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;@21d95b94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:02:16,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 07:02:16,317 INFO L130 PetriNetUnfolder]: 103/470 cut-off events. [2023-09-01 07:02:16,317 INFO L131 PetriNetUnfolder]: For 86/94 co-relation queries the response was YES. [2023-09-01 07:02:16,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:02:16,317 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 07:02:16,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:02:16,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:02:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1032661482, now seen corresponding path program 1 times [2023-09-01 07:02:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:02:16,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630020748] [2023-09-01 07:02:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:02:16,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:02:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:16,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:02:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:16,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:02:16,386 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:02:16,386 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 07:02:16,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 07:02:16,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:02:16,387 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:02:16,387 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 07:02:16,388 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:02:16,388 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 07:02:16,497 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 07:02:16,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 638 places, 716 transitions, 1582 flow [2023-09-01 07:02:35,821 INFO L130 PetriNetUnfolder]: 11792/46568 cut-off events. [2023-09-01 07:02:35,822 INFO L131 PetriNetUnfolder]: For 10450/10520 co-relation queries the response was YES. [2023-09-01 07:02:37,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56994 conditions, 46568 events. 11792/46568 cut-off events. For 10450/10520 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 545167 event pairs, 4296 based on Foata normal form. 0/37656 useless extension candidates. Maximal degree in co-relation 28704. Up to 5120 conditions per place. [2023-09-01 07:02:37,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 638 places, 716 transitions, 1582 flow [2023-09-01 07:02:39,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 636 places, 714 transitions, 1578 flow [2023-09-01 07:02:39,041 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:02:39,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 636 places, 714 transitions, 1578 flow [2023-09-01 07:02:39,042 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 636 places, 714 transitions, 1578 flow [2023-09-01 07:02:39,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 636 places, 714 transitions, 1578 flow [2023-09-01 07:02:57,642 INFO L130 PetriNetUnfolder]: 11792/46558 cut-off events. [2023-09-01 07:02:57,642 INFO L131 PetriNetUnfolder]: For 10450/10520 co-relation queries the response was YES. [2023-09-01 07:02:59,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56984 conditions, 46558 events. 11792/46558 cut-off events. For 10450/10520 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 545366 event pairs, 4296 based on Foata normal form. 0/37656 useless extension candidates. Maximal degree in co-relation 28696. Up to 5120 conditions per place. [2023-09-01 07:03:04,714 INFO L119 LiptonReduction]: Number of co-enabled transitions 369840 [2023-09-01 07:03:15,294 INFO L134 LiptonReduction]: Checked pairs total: 848335 [2023-09-01 07:03:15,294 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-09-01 07:03:15,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:03:15,297 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;@21d95b94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:03:15,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 07:03:15,350 INFO L130 PetriNetUnfolder]: 164/705 cut-off events. [2023-09-01 07:03:15,350 INFO L131 PetriNetUnfolder]: For 145/157 co-relation queries the response was YES. [2023-09-01 07:03:15,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:03:15,350 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:03:15,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:03:15,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:03:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash -907396714, now seen corresponding path program 1 times [2023-09-01 07:03:15,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:03:15,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008088259] [2023-09-01 07:03:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:03:15,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:03:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:03:15,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:03:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:03:15,452 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:03:15,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:03:15,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 07:03:15,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 07:03:15,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:03:15,454 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:03:15,460 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 07:03:15,460 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:03:15,460 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 07:03:15,542 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 07:03:15,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 744 places, 837 transitions, 1866 flow [2023-09-01 07:04:59,530 INFO L130 PetriNetUnfolder]: 53983/185141 cut-off events. [2023-09-01 07:04:59,531 INFO L131 PetriNetUnfolder]: For 49552/49648 co-relation queries the response was YES. [2023-09-01 07:05:20,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234570 conditions, 185141 events. 53983/185141 cut-off events. For 49552/49648 co-relation queries the response was YES. Maximal size of possible extension queue 2060. Compared 2566091 event pairs, 24930 based on Foata normal form. 0/151371 useless extension candidates. Maximal degree in co-relation 115023. Up to 24576 conditions per place. [2023-09-01 07:05:20,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 744 places, 837 transitions, 1866 flow [2023-09-01 07:05:28,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 742 places, 835 transitions, 1862 flow [2023-09-01 07:05:28,286 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:05:28,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 742 places, 835 transitions, 1862 flow [2023-09-01 07:05:28,287 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 742 places, 835 transitions, 1862 flow [2023-09-01 07:05:28,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 742 places, 835 transitions, 1862 flow [2023-09-01 07:07:21,244 INFO L130 PetriNetUnfolder]: 53983/185129 cut-off events. [2023-09-01 07:07:21,245 INFO L131 PetriNetUnfolder]: For 49552/49648 co-relation queries the response was YES. [2023-09-01 07:07:41,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234558 conditions, 185129 events. 53983/185129 cut-off events. For 49552/49648 co-relation queries the response was YES. Maximal size of possible extension queue 2060. Compared 2566486 event pairs, 24930 based on Foata normal form. 0/151371 useless extension candidates. Maximal degree in co-relation 115013. Up to 24576 conditions per place. [2023-09-01 07:08:21,201 INFO L119 LiptonReduction]: Number of co-enabled transitions 529644