./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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_10-ptrmunge_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --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 [2023-08-31 20:44:55,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:44:55,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:44:55,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:44:55,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:44:55,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:44:55,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:44:55,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:44:55,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:44:55,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:44:55,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:44:55,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:44:55,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:44:55,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:44:55,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:44:55,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:44:55,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:44:55,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:44:55,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:44:55,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:44:55,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:44:55,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:44:55,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:44:55,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:44:55,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:44:55,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:44:55,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:44:55,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:44:55,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:44:55,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:44:55,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:44:55,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:44:55,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:44:55,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:44:55,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:44:55,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:44:55,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:44:55,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:44:55,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:44:55,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:44:55,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:44:55,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:44:55,692 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:44:55,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:44:55,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:44:55,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:44:55,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:44:55,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:44:55,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:44:55,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:44:55,696 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:44:55,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:44:55,697 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:44:55,697 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:44:55,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:44:55,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:44:55,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:44:55,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:44:55,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:44:55,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:44:55,698 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:44:55,698 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:44:55,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:44:55,699 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:44:55,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:44:55,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:44:55,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:44:55,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:44:55,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:44:55,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:44:55,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:44:55,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:44:55,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:44:55,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:44:55,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:44:55,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:44:55,701 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:44:55,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:44:55,701 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:44:55,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:44:56,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:44:56,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:44:56,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:44:56,047 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:44:56,047 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:44:56,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-08-31 20:44:57,312 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:44:57,590 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:44:57,591 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-08-31 20:44:57,602 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0348a1e25/ee5bf6da58284579bba15651f6e00cc2/FLAG1ac92d5f0 [2023-08-31 20:44:57,615 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0348a1e25/ee5bf6da58284579bba15651f6e00cc2 [2023-08-31 20:44:57,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:44:57,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:44:57,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:44:57,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:44:57,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:44:57,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:44:57" (1/1) ... [2023-08-31 20:44:57,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1319f837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:57, skipping insertion in model container [2023-08-31 20:44:57,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:44:57" (1/1) ... [2023-08-31 20:44:57,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:44:57,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:44:57,922 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_10-ptrmunge_racefree.i[30176,30189] [2023-08-31 20:44:57,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:44:57,978 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:44:58,025 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_10-ptrmunge_racefree.i[30176,30189] [2023-08-31 20:44:58,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:44:58,087 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:44:58,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58 WrapperNode [2023-08-31 20:44:58,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:44:58,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:44:58,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:44:58,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:44:58,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,140 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 288 [2023-08-31 20:44:58,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:44:58,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:44:58,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:44:58,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:44:58,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:44:58,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:44:58,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:44:58,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:44:58,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (1/1) ... [2023-08-31 20:44:58,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:44:58,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:44:58,254 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) [2023-08-31 20:44:58,269 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 [2023-08-31 20:44:58,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:44:58,296 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-31 20:44:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-31 20:44:58,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:44:58,296 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:44:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:44:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:44:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-31 20:44:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-31 20:44:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:44:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:44:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:44:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:44:58,299 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:44:58,478 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:44:58,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:44:58,884 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:44:58,893 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:44:58,893 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-31 20:44:58,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:44:58 BoogieIcfgContainer [2023-08-31 20:44:58,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:44:58,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:44:58,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:44:58,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:44:58,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:44:57" (1/3) ... [2023-08-31 20:44:58,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5100afac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:44:58, skipping insertion in model container [2023-08-31 20:44:58,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:58" (2/3) ... [2023-08-31 20:44:58,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5100afac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:44:58, skipping insertion in model container [2023-08-31 20:44:58,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:44:58" (3/3) ... [2023-08-31 20:44:58,915 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-08-31 20:44:58,922 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:44:58,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:44:58,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-31 20:44:58,932 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:44:59,105 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:44:59,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 295 transitions, 612 flow [2023-08-31 20:44:59,332 INFO L130 PetriNetUnfolder]: 58/529 cut-off events. [2023-08-31 20:44:59,332 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:44:59,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 529 events. 58/529 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2652 event pairs, 0 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-31 20:44:59,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 295 transitions, 612 flow [2023-08-31 20:44:59,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 295 transitions, 612 flow [2023-08-31 20:44:59,367 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:44:59,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 295 transitions, 612 flow [2023-08-31 20:44:59,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 295 transitions, 612 flow [2023-08-31 20:44:59,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 295 transitions, 612 flow [2023-08-31 20:44:59,468 INFO L130 PetriNetUnfolder]: 58/529 cut-off events. [2023-08-31 20:44:59,468 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:44:59,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 529 events. 58/529 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2652 event pairs, 0 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-31 20:44:59,501 INFO L119 LiptonReduction]: Number of co-enabled transitions 39668 [2023-08-31 20:45:03,981 INFO L134 LiptonReduction]: Checked pairs total: 157988 [2023-08-31 20:45:03,982 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-31 20:45:04,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:04,016 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;@230e5574, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:04,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:45:04,022 INFO L130 PetriNetUnfolder]: 1/22 cut-off events. [2023-08-31 20:45:04,022 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:45:04,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:04,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:45:04,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:04,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1708473271, now seen corresponding path program 1 times [2023-08-31 20:45:04,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:04,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268793570] [2023-08-31 20:45:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:04,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:04,148 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:04,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:04,226 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:04,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:45:04,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:45:04,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:45:04,230 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:04,234 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:45:04,235 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:04,235 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:45:04,323 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:45:04,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 489 transitions, 1026 flow [2023-08-31 20:45:04,822 INFO L130 PetriNetUnfolder]: 197/1561 cut-off events. [2023-08-31 20:45:04,823 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-31 20:45:04,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 1561 events. 197/1561 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10964 event pairs, 1 based on Foata normal form. 0/1305 useless extension candidates. Maximal degree in co-relation 942. Up to 32 conditions per place. [2023-08-31 20:45:04,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 438 places, 489 transitions, 1026 flow [2023-08-31 20:45:04,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 438 places, 489 transitions, 1026 flow [2023-08-31 20:45:04,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:04,871 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 438 places, 489 transitions, 1026 flow [2023-08-31 20:45:04,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 438 places, 489 transitions, 1026 flow [2023-08-31 20:45:04,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 489 transitions, 1026 flow [2023-08-31 20:45:05,265 INFO L130 PetriNetUnfolder]: 197/1561 cut-off events. [2023-08-31 20:45:05,266 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-31 20:45:05,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 1561 events. 197/1561 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10964 event pairs, 1 based on Foata normal form. 0/1305 useless extension candidates. Maximal degree in co-relation 942. Up to 32 conditions per place. [2023-08-31 20:45:05,431 INFO L119 LiptonReduction]: Number of co-enabled transitions 153784 [2023-08-31 20:45:10,826 INFO L134 LiptonReduction]: Checked pairs total: 661049 [2023-08-31 20:45:10,827 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-08-31 20:45:10,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:10,830 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;@230e5574, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:10,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:45:10,840 INFO L130 PetriNetUnfolder]: 19/148 cut-off events. [2023-08-31 20:45:10,840 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 20:45:10,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:10,841 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:45:10,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:10,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:10,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2139159732, now seen corresponding path program 1 times [2023-08-31 20:45:10,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:10,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865953047] [2023-08-31 20:45:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:10,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:10,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:10,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:10,887 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:10,888 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:45:10,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:45:10,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:45:10,888 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:10,889 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:45:10,889 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:10,889 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:45:10,976 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:45:10,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 608 places, 683 transitions, 1444 flow [2023-08-31 20:45:12,474 INFO L130 PetriNetUnfolder]: 664/4367 cut-off events. [2023-08-31 20:45:12,474 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2023-08-31 20:45:12,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 4367 events. 664/4367 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 36488 event pairs, 32 based on Foata normal form. 0/3688 useless extension candidates. Maximal degree in co-relation 2754. Up to 192 conditions per place. [2023-08-31 20:45:12,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 608 places, 683 transitions, 1444 flow [2023-08-31 20:45:12,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 608 places, 683 transitions, 1444 flow [2023-08-31 20:45:12,664 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:12,664 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 608 places, 683 transitions, 1444 flow [2023-08-31 20:45:12,664 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 608 places, 683 transitions, 1444 flow [2023-08-31 20:45:12,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 608 places, 683 transitions, 1444 flow [2023-08-31 20:45:14,271 INFO L130 PetriNetUnfolder]: 664/4367 cut-off events. [2023-08-31 20:45:14,272 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2023-08-31 20:45:14,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 4367 events. 664/4367 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 36488 event pairs, 32 based on Foata normal form. 0/3688 useless extension candidates. Maximal degree in co-relation 2754. Up to 192 conditions per place. [2023-08-31 20:45:14,761 INFO L119 LiptonReduction]: Number of co-enabled transitions 342348 [2023-08-31 20:45:21,079 INFO L134 LiptonReduction]: Checked pairs total: 1525666 [2023-08-31 20:45:21,079 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-08-31 20:45:21,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:21,082 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;@230e5574, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:21,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:45:21,107 INFO L130 PetriNetUnfolder]: 44/329 cut-off events. [2023-08-31 20:45:21,107 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 20:45:21,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:21,107 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:45:21,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:21,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:21,108 INFO L85 PathProgramCache]: Analyzing trace with hash -498772073, now seen corresponding path program 1 times [2023-08-31 20:45:21,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:21,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726626768] [2023-08-31 20:45:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:21,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:21,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:21,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:21,152 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:21,152 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:45:21,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:45:21,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:45:21,153 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:21,154 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:45:21,154 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:21,154 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:45:21,236 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-31 20:45:21,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 778 places, 877 transitions, 1866 flow [2023-08-31 20:45:27,024 INFO L130 PetriNetUnfolder]: 2647/13915 cut-off events. [2023-08-31 20:45:27,024 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-08-31 20:45:27,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16080 conditions, 13915 events. 2647/13915 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 139551 event pairs, 313 based on Foata normal form. 0/11911 useless extension candidates. Maximal degree in co-relation 8587. Up to 1024 conditions per place. [2023-08-31 20:45:27,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 778 places, 877 transitions, 1866 flow [2023-08-31 20:45:27,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 778 places, 877 transitions, 1866 flow [2023-08-31 20:45:27,810 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:27,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 778 places, 877 transitions, 1866 flow [2023-08-31 20:45:27,811 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 778 places, 877 transitions, 1866 flow [2023-08-31 20:45:27,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 778 places, 877 transitions, 1866 flow [2023-08-31 20:45:33,125 INFO L130 PetriNetUnfolder]: 2647/13915 cut-off events. [2023-08-31 20:45:33,125 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-08-31 20:45:33,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16080 conditions, 13915 events. 2647/13915 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 139551 event pairs, 313 based on Foata normal form. 0/11911 useless extension candidates. Maximal degree in co-relation 8587. Up to 1024 conditions per place. [2023-08-31 20:45:35,154 INFO L119 LiptonReduction]: Number of co-enabled transitions 605360 [2023-08-31 20:45:42,475 INFO L134 LiptonReduction]: Checked pairs total: 2711776 [2023-08-31 20:45:42,476 INFO L136 LiptonReduction]: Total number of compositions: 450 [2023-08-31 20:45:42,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:42,478 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;@230e5574, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:42,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:45:42,520 INFO L130 PetriNetUnfolder]: 80/595 cut-off events. [2023-08-31 20:45:42,520 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-31 20:45:42,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:42,521 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:42,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:42,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:42,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1694414084, now seen corresponding path program 1 times [2023-08-31 20:45:42,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:42,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127087668] [2023-08-31 20:45:42,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:42,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:42,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:42,566 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:42,566 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:42,567 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:45:42,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:45:42,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:45:42,567 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:42,568 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:45:42,568 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:42,568 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:45:42,655 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-31 20:45:42,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 948 places, 1071 transitions, 2292 flow [2023-08-31 20:46:09,712 INFO L130 PetriNetUnfolder]: 11762/50941 cut-off events. [2023-08-31 20:46:09,712 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2023-08-31 20:46:14,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61367 conditions, 50941 events. 11762/50941 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 620446 event pairs, 2148 based on Foata normal form. 0/44118 useless extension candidates. Maximal degree in co-relation 30972. Up to 5120 conditions per place. [2023-08-31 20:46:14,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 948 places, 1071 transitions, 2292 flow [2023-08-31 20:46:15,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 948 places, 1071 transitions, 2292 flow [2023-08-31 20:46:15,822 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:15,822 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 948 places, 1071 transitions, 2292 flow [2023-08-31 20:46:15,822 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 948 places, 1071 transitions, 2292 flow [2023-08-31 20:46:15,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 948 places, 1071 transitions, 2292 flow [2023-08-31 20:46:41,880 INFO L130 PetriNetUnfolder]: 11762/50941 cut-off events. [2023-08-31 20:46:41,880 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2023-08-31 20:46:45,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61367 conditions, 50941 events. 11762/50941 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 620446 event pairs, 2148 based on Foata normal form. 0/44118 useless extension candidates. Maximal degree in co-relation 30972. Up to 5120 conditions per place. [2023-08-31 20:46:52,874 INFO L119 LiptonReduction]: Number of co-enabled transitions 942820 [2023-08-31 20:47:01,459 INFO L134 LiptonReduction]: Checked pairs total: 4799844 [2023-08-31 20:47:01,460 INFO L136 LiptonReduction]: Total number of compositions: 549 [2023-08-31 20:47:01,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:01,463 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;@230e5574, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:01,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:47:01,537 INFO L130 PetriNetUnfolder]: 127/898 cut-off events. [2023-08-31 20:47:01,537 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2023-08-31 20:47:01,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:01,537 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:01,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:01,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash 210015805, now seen corresponding path program 1 times [2023-08-31 20:47:01,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:01,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314011313] [2023-08-31 20:47:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:01,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:01,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:01,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:01,585 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:01,585 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:47:01,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:47:01,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:47:01,586 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:01,586 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:47:01,587 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:01,587 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:47:01,689 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-31 20:47:01,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1118 places, 1265 transitions, 2722 flow