./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_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_82-list_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 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --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 07:01:31,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:01:31,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:01:31,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:01:31,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:01:31,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:01:31,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:01:31,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:01:31,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:01:31,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:01:31,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:01:31,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:01:31,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:01:31,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:01:31,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:01:31,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:01:31,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:01:31,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:01:31,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:01:31,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:01:31,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:01:31,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:01:31,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:01:31,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:01:31,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:01:31,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:01:31,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:01:31,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:01:31,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:01:31,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:01:31,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:01:31,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:01:31,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:01:31,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:01:31,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:01:31,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:01:31,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:01:31,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:01:31,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:01:31,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:01:31,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:01:31,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:01:31,653 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:01:31,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:01:31,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:01:31,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:01:31,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:01:31,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:01:31,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:01:31,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:01:31,656 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:01:31,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:01:31,657 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:01:31,658 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:01:31,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:01:31,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:01:31,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:01:31,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:01:31,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:01:31,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:01:31,659 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:01:31,659 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:01:31,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:01:31,659 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:01:31,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:01:31,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:01:31,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:01:31,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:01:31,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:01:31,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:01:31,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:01:31,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:01:31,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:01:31,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:01:31,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:01:31,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:01:31,663 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:01:31,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:01:31,663 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:01:31,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:01:31,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:01:31,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:01:31,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:01:31,993 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:01:31,994 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:01:31,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-09-01 07:01:33,188 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:01:33,496 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:01:33,497 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-09-01 07:01:33,515 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b609e85f7/938642865c4846319156361de80e5601/FLAG9b7a43bbb [2023-09-01 07:01:33,529 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b609e85f7/938642865c4846319156361de80e5601 [2023-09-01 07:01:33,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:01:33,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:01:33,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:01:33,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:01:33,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:01:33,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:01:33" (1/1) ... [2023-09-01 07:01:33,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196f051c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:33, skipping insertion in model container [2023-09-01 07:01:33,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:01:33" (1/1) ... [2023-09-01 07:01:33,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:01:33,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:01:34,070 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_82-list_racefree.i[47038,47051] [2023-09-01 07:01:34,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:01:34,136 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:01:34,178 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_82-list_racefree.i[47038,47051] [2023-09-01 07:01:34,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:01:34,263 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:01:34,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34 WrapperNode [2023-09-01 07:01:34,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:01:34,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:01:34,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:01:34,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:01:34,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,347 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 220 [2023-09-01 07:01:34,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:01:34,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:01:34,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:01:34,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:01:34,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,402 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:01:34,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:01:34,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:01:34,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:01:34,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (1/1) ... [2023-09-01 07:01:34,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:01:34,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:01:34,438 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 07:01:34,454 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 07:01:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:01:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 07:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 07:01:34,482 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 07:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 07:01:34,483 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 07:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 07:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 07:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:01:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:01:34,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:01:34,485 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 07:01:34,700 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:01:34,701 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:01:35,013 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:01:35,022 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:01:35,022 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-09-01 07:01:35,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:01:35 BoogieIcfgContainer [2023-09-01 07:01:35,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:01:35,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:01:35,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:01:35,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:01:35,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:01:33" (1/3) ... [2023-09-01 07:01:35,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdaaf42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:01:35, skipping insertion in model container [2023-09-01 07:01:35,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:01:34" (2/3) ... [2023-09-01 07:01:35,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdaaf42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:01:35, skipping insertion in model container [2023-09-01 07:01:35,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:01:35" (3/3) ... [2023-09-01 07:01:35,032 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-09-01 07:01:35,039 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:01:35,047 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:01:35,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-09-01 07:01:35,048 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:01:35,165 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 07:01:35,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 233 transitions, 488 flow [2023-09-01 07:01:35,373 INFO L130 PetriNetUnfolder]: 52/452 cut-off events. [2023-09-01 07:01:35,374 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-09-01 07:01:35,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 452 events. 52/452 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1879 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2023-09-01 07:01:35,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 233 transitions, 488 flow [2023-09-01 07:01:35,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 229 transitions, 474 flow [2023-09-01 07:01:35,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:01:35,411 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 229 transitions, 474 flow [2023-09-01 07:01:35,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 229 transitions, 474 flow [2023-09-01 07:01:35,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 229 transitions, 474 flow [2023-09-01 07:01:35,495 INFO L130 PetriNetUnfolder]: 48/430 cut-off events. [2023-09-01 07:01:35,496 INFO L131 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2023-09-01 07:01:35,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 430 events. 48/430 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1760 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 205. Up to 8 conditions per place. [2023-09-01 07:01:35,510 INFO L119 LiptonReduction]: Number of co-enabled transitions 16360 [2023-09-01 07:01:42,429 INFO L134 LiptonReduction]: Checked pairs total: 29212 [2023-09-01 07:01:42,429 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-09-01 07:01:42,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:01:42,448 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4dab81eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:01:42,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 07:01:42,454 INFO L130 PetriNetUnfolder]: 2/30 cut-off events. [2023-09-01 07:01:42,454 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:01:42,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:01:42,455 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 07:01:42,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:01:42,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:01:42,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1094319191, now seen corresponding path program 1 times [2023-09-01 07:01:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:01:42,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141161101] [2023-09-01 07:01:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:01:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:01:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:42,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:01:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:42,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:01:42,797 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:01:42,799 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 07:01:42,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 07:01:42,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:01:42,803 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:01:42,809 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 07:01:42,810 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:01:42,810 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 07:01:42,890 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 07:01:42,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 357 transitions, 762 flow [2023-09-01 07:01:43,228 INFO L130 PetriNetUnfolder]: 191/1389 cut-off events. [2023-09-01 07:01:43,229 INFO L131 PetriNetUnfolder]: For 72/88 co-relation queries the response was YES. [2023-09-01 07:01:43,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 1389 events. 191/1389 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9012 event pairs, 2 based on Foata normal form. 0/1111 useless extension candidates. Maximal degree in co-relation 859. Up to 32 conditions per place. [2023-09-01 07:01:43,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 357 transitions, 762 flow [2023-09-01 07:01:43,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 322 places, 355 transitions, 758 flow [2023-09-01 07:01:43,255 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:01:43,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 355 transitions, 758 flow [2023-09-01 07:01:43,255 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 355 transitions, 758 flow [2023-09-01 07:01:43,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 355 transitions, 758 flow [2023-09-01 07:01:43,571 INFO L130 PetriNetUnfolder]: 191/1385 cut-off events. [2023-09-01 07:01:43,571 INFO L131 PetriNetUnfolder]: For 72/88 co-relation queries the response was YES. [2023-09-01 07:01:43,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 1385 events. 191/1385 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8938 event pairs, 2 based on Foata normal form. 0/1111 useless extension candidates. Maximal degree in co-relation 857. Up to 32 conditions per place. [2023-09-01 07:01:43,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 64440 [2023-09-01 07:01:51,359 INFO L134 LiptonReduction]: Checked pairs total: 140781 [2023-09-01 07:01:51,359 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-09-01 07:01:51,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:01:51,363 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;@4dab81eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:01:51,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 07:01:51,372 INFO L130 PetriNetUnfolder]: 13/104 cut-off events. [2023-09-01 07:01:51,372 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2023-09-01 07:01:51,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:01:51,373 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 07:01:51,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:01:51,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:01:51,374 INFO L85 PathProgramCache]: Analyzing trace with hash 406437565, now seen corresponding path program 1 times [2023-09-01 07:01:51,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:01:51,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233532746] [2023-09-01 07:01:51,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:01:51,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:01:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:51,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:01:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:51,495 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:01:51,501 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:01:51,501 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 07:01:51,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 07:01:51,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:01:51,502 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:01:51,503 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 07:01:51,503 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:01:51,503 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 07:01:51,563 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 07:01:51,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 433 places, 481 transitions, 1040 flow [2023-09-01 07:01:52,735 INFO L130 PetriNetUnfolder]: 664/3966 cut-off events. [2023-09-01 07:01:52,735 INFO L131 PetriNetUnfolder]: For 419/449 co-relation queries the response was YES. [2023-09-01 07:01:52,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4417 conditions, 3966 events. 664/3966 cut-off events. For 419/449 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 31972 event pairs, 52 based on Foata normal form. 0/3160 useless extension candidates. Maximal degree in co-relation 2533. Up to 192 conditions per place. [2023-09-01 07:01:52,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 433 places, 481 transitions, 1040 flow [2023-09-01 07:01:52,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 431 places, 479 transitions, 1036 flow [2023-09-01 07:01:52,847 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:01:52,847 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 431 places, 479 transitions, 1036 flow [2023-09-01 07:01:52,847 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 431 places, 479 transitions, 1036 flow [2023-09-01 07:01:52,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 479 transitions, 1036 flow [2023-09-01 07:01:53,907 INFO L130 PetriNetUnfolder]: 664/3960 cut-off events. [2023-09-01 07:01:53,908 INFO L131 PetriNetUnfolder]: For 419/449 co-relation queries the response was YES. [2023-09-01 07:01:53,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4411 conditions, 3960 events. 664/3960 cut-off events. For 419/449 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 31848 event pairs, 52 based on Foata normal form. 0/3160 useless extension candidates. Maximal degree in co-relation 2529. Up to 192 conditions per place. [2023-09-01 07:01:54,305 INFO L119 LiptonReduction]: Number of co-enabled transitions 141756 [2023-09-01 07:02:03,193 INFO L134 LiptonReduction]: Checked pairs total: 323142 [2023-09-01 07:02:03,193 INFO L136 LiptonReduction]: Total number of compositions: 383 [2023-09-01 07:02:03,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:02:03,196 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;@4dab81eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:02:03,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 07:02:03,231 INFO L130 PetriNetUnfolder]: 37/207 cut-off events. [2023-09-01 07:02:03,231 INFO L131 PetriNetUnfolder]: For 26/33 co-relation queries the response was YES. [2023-09-01 07:02:03,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:02:03,232 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 07:02:03,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:02:03,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:02:03,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1739088192, now seen corresponding path program 1 times [2023-09-01 07:02:03,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:02:03,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662551674] [2023-09-01 07:02:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:02:03,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:02:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:03,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:02:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:03,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:02:03,339 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:02:03,339 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 07:02:03,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 07:02:03,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:02:03,340 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:02:03,340 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 07:02:03,341 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:02:03,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 07:02:03,397 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 07:02:03,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 542 places, 605 transitions, 1322 flow [2023-09-01 07:02:07,552 INFO L130 PetriNetUnfolder]: 2659/12719 cut-off events. [2023-09-01 07:02:07,552 INFO L131 PetriNetUnfolder]: For 2144/2192 co-relation queries the response was YES. [2023-09-01 07:02:07,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14884 conditions, 12719 events. 2659/12719 cut-off events. For 2144/2192 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 123467 event pairs, 626 based on Foata normal form. 0/10187 useless extension candidates. Maximal degree in co-relation 7950. Up to 1024 conditions per place. [2023-09-01 07:02:07,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 542 places, 605 transitions, 1322 flow [2023-09-01 07:02:07,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 540 places, 603 transitions, 1318 flow [2023-09-01 07:02:07,995 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:02:07,995 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 540 places, 603 transitions, 1318 flow [2023-09-01 07:02:07,996 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 540 places, 603 transitions, 1318 flow [2023-09-01 07:02:07,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 540 places, 603 transitions, 1318 flow [2023-09-01 07:02:11,677 INFO L130 PetriNetUnfolder]: 2659/12711 cut-off events. [2023-09-01 07:02:11,677 INFO L131 PetriNetUnfolder]: For 2144/2192 co-relation queries the response was YES. [2023-09-01 07:02:11,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14876 conditions, 12711 events. 2659/12711 cut-off events. For 2144/2192 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 123364 event pairs, 626 based on Foata normal form. 0/10187 useless extension candidates. Maximal degree in co-relation 7944. Up to 1024 conditions per place. [2023-09-01 07:02:12,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 249136 [2023-09-01 07:02:23,581 INFO L134 LiptonReduction]: Checked pairs total: 576826 [2023-09-01 07:02:23,581 INFO L136 LiptonReduction]: Total number of compositions: 476 [2023-09-01 07:02:23,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:02:23,587 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;@4dab81eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:02:23,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 07:02:23,618 INFO L130 PetriNetUnfolder]: 79/389 cut-off events. [2023-09-01 07:02:23,618 INFO L131 PetriNetUnfolder]: For 69/83 co-relation queries the response was YES. [2023-09-01 07:02:23,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:02:23,619 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 07:02:23,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:02:23,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:02:23,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1779915525, now seen corresponding path program 1 times [2023-09-01 07:02:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:02:23,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056453838] [2023-09-01 07:02:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:02:23,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:02:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:23,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:02:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:23,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:02:23,699 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:02:23,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 07:02:23,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 07:02:23,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:02:23,700 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:02:23,701 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 07:02:23,701 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:02:23,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 07:02:23,782 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 07:02:23,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 651 places, 729 transitions, 1608 flow [2023-09-01 07:02:43,544 INFO L130 PetriNetUnfolder]: 11792/46656 cut-off events. [2023-09-01 07:02:43,544 INFO L131 PetriNetUnfolder]: For 10450/10520 co-relation queries the response was YES. [2023-09-01 07:02:45,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57082 conditions, 46656 events. 11792/46656 cut-off events. For 10450/10520 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 545078 event pairs, 4296 based on Foata normal form. 0/37744 useless extension candidates. Maximal degree in co-relation 28777. Up to 5120 conditions per place. [2023-09-01 07:02:45,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 651 places, 729 transitions, 1608 flow [2023-09-01 07:02:46,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 649 places, 727 transitions, 1604 flow [2023-09-01 07:02:46,079 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:02:46,079 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 649 places, 727 transitions, 1604 flow [2023-09-01 07:02:46,079 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 649 places, 727 transitions, 1604 flow [2023-09-01 07:02:46,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 649 places, 727 transitions, 1604 flow [2023-09-01 07:03:05,088 INFO L130 PetriNetUnfolder]: 11792/46646 cut-off events. [2023-09-01 07:03:05,088 INFO L131 PetriNetUnfolder]: For 10450/10520 co-relation queries the response was YES. [2023-09-01 07:03:06,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57072 conditions, 46646 events. 11792/46646 cut-off events. For 10450/10520 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 544399 event pairs, 4296 based on Foata normal form. 0/37744 useless extension candidates. Maximal degree in co-relation 28769. Up to 5120 conditions per place. [2023-09-01 07:03:11,779 INFO L119 LiptonReduction]: Number of co-enabled transitions 386580 [2023-09-01 07:03:23,188 INFO L134 LiptonReduction]: Checked pairs total: 902423 [2023-09-01 07:03:23,188 INFO L136 LiptonReduction]: Total number of compositions: 571 [2023-09-01 07:03:23,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:03:23,197 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;@4dab81eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:03:23,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 07:03:23,243 INFO L130 PetriNetUnfolder]: 162/732 cut-off events. [2023-09-01 07:03:23,244 INFO L131 PetriNetUnfolder]: For 175/197 co-relation queries the response was YES. [2023-09-01 07:03:23,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:03:23,244 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:03:23,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:03:23,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:03:23,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1475313161, now seen corresponding path program 1 times [2023-09-01 07:03:23,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:03:23,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476749132] [2023-09-01 07:03:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:03:23,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:03:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:03:23,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:03:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:03:23,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:03:23,330 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:03:23,331 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 07:03:23,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 07:03:23,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:03:23,331 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:03:23,332 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 07:03:23,332 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:03:23,332 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 07:03:23,413 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 07:03:23,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 760 places, 853 transitions, 1898 flow [2023-09-01 07:05:07,957 INFO L130 PetriNetUnfolder]: 53983/185265 cut-off events. [2023-09-01 07:05:07,957 INFO L131 PetriNetUnfolder]: For 49552/49648 co-relation queries the response was YES. [2023-09-01 07:05:26,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234694 conditions, 185265 events. 53983/185265 cut-off events. For 49552/49648 co-relation queries the response was YES. Maximal size of possible extension queue 1997. Compared 2563121 event pairs, 24930 based on Foata normal form. 0/151495 useless extension candidates. Maximal degree in co-relation 115129. Up to 24576 conditions per place. [2023-09-01 07:05:26,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 760 places, 853 transitions, 1898 flow [2023-09-01 07:05:33,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 758 places, 851 transitions, 1894 flow [2023-09-01 07:05:33,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:05:33,931 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 758 places, 851 transitions, 1894 flow [2023-09-01 07:05:33,931 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 758 places, 851 transitions, 1894 flow [2023-09-01 07:05:33,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 758 places, 851 transitions, 1894 flow