./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_04-munge_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --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 10:44:14,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:44:14,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:44:14,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:44:14,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:44:14,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:44:14,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:44:14,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:44:14,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:44:14,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:44:14,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:44:14,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:44:14,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:44:14,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:44:14,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:44:14,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:44:14,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:44:14,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:44:14,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:44:14,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:44:14,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:44:14,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:44:14,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:44:14,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:44:14,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:44:14,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:44:14,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:44:14,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:44:14,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:44:14,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:44:14,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:44:14,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:44:14,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:44:14,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:44:14,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:44:14,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:44:14,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:44:14,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:44:14,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:44:14,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:44:14,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:44:14,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:44:14,871 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:44:14,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:44:14,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:44:14,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:44:14,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:44:14,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:44:14,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:44:14,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:44:14,874 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:44:14,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:44:14,875 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:44:14,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:44:14,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:44:14,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:44:14,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:44:14,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:44:14,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:44:14,876 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:44:14,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:44:14,877 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:44:14,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:44:14,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:44:14,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:44:14,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:44:14,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:44:14,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:44:14,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:44:14,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:44:14,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:44:14,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:44:14,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:44:14,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:44:14,879 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:44:14,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:44:14,880 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:44:14,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:44:15,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:44:15,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:44:15,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:44:15,197 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:44:15,197 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:44:15,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-09-01 10:44:16,330 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:44:16,601 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:44:16,602 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-09-01 10:44:16,610 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/199d88162/4e3e643af86849acaad8f6c3e8796180/FLAGa1a2bee9a [2023-09-01 10:44:16,623 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/199d88162/4e3e643af86849acaad8f6c3e8796180 [2023-09-01 10:44:16,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:44:16,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:44:16,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:44:16,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:44:16,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:44:16,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:44:16" (1/1) ... [2023-09-01 10:44:16,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5a9e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:16, skipping insertion in model container [2023-09-01 10:44:16,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:44:16" (1/1) ... [2023-09-01 10:44:16,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:44:16,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:44:16,879 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_04-munge_racefree.i[30176,30189] [2023-09-01 10:44:16,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:44:16,912 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:44:16,967 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_04-munge_racefree.i[30176,30189] [2023-09-01 10:44:16,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:44:17,031 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:44:17,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17 WrapperNode [2023-09-01 10:44:17,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:44:17,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:44:17,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:44:17,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:44:17,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,099 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 202 [2023-09-01 10:44:17,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:44:17,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:44:17,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:44:17,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:44:17,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,151 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:44:17,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:44:17,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:44:17,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:44:17,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (1/1) ... [2023-09-01 10:44:17,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:44:17,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:44:17,193 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 10:44:17,205 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 10:44:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:44:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 10:44:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 10:44:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:44:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:44:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:44:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:44:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 10:44:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 10:44:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:44:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:44:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:44:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:44:17,243 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 10:44:17,353 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:44:17,370 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:44:17,671 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:44:17,679 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:44:17,679 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-09-01 10:44:17,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:44:17 BoogieIcfgContainer [2023-09-01 10:44:17,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:44:17,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:44:17,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:44:17,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:44:17,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:44:16" (1/3) ... [2023-09-01 10:44:17,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f79c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:44:17, skipping insertion in model container [2023-09-01 10:44:17,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:17" (2/3) ... [2023-09-01 10:44:17,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f79c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:44:17, skipping insertion in model container [2023-09-01 10:44:17,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:44:17" (3/3) ... [2023-09-01 10:44:17,693 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-09-01 10:44:17,700 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:44:17,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:44:17,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 10:44:17,708 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:44:17,827 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:44:17,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 200 transitions, 422 flow [2023-09-01 10:44:18,008 INFO L130 PetriNetUnfolder]: 58/358 cut-off events. [2023-09-01 10:44:18,012 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 10:44:18,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 358 events. 58/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1460 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-09-01 10:44:18,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 200 transitions, 422 flow [2023-09-01 10:44:18,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 200 transitions, 422 flow [2023-09-01 10:44:18,041 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:18,053 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 200 transitions, 422 flow [2023-09-01 10:44:18,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 200 transitions, 422 flow [2023-09-01 10:44:18,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 200 transitions, 422 flow [2023-09-01 10:44:18,133 INFO L130 PetriNetUnfolder]: 58/358 cut-off events. [2023-09-01 10:44:18,134 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 10:44:18,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 358 events. 58/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1460 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-09-01 10:44:18,148 INFO L119 LiptonReduction]: Number of co-enabled transitions 15876 [2023-09-01 10:44:21,396 INFO L134 LiptonReduction]: Checked pairs total: 27843 [2023-09-01 10:44:21,396 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-09-01 10:44:21,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:21,414 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;@12e7f2cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:21,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:44:21,419 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-09-01 10:44:21,419 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:44:21,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:21,420 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:44:21,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:21,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:21,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1882836693, now seen corresponding path program 1 times [2023-09-01 10:44:21,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:21,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597656750] [2023-09-01 10:44:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:21,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:21,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:21,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:21,625 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:21,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:44:21,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:44:21,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:44:21,628 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:21,631 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:44:21,632 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:21,632 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:44:21,687 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:44:21,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 314 transitions, 676 flow [2023-09-01 10:44:21,862 INFO L130 PetriNetUnfolder]: 197/1046 cut-off events. [2023-09-01 10:44:21,862 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-09-01 10:44:21,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 1046 events. 197/1046 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6040 event pairs, 1 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 647. Up to 32 conditions per place. [2023-09-01 10:44:21,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 314 transitions, 676 flow [2023-09-01 10:44:21,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 314 transitions, 676 flow [2023-09-01 10:44:21,881 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:21,882 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 314 transitions, 676 flow [2023-09-01 10:44:21,882 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 314 transitions, 676 flow [2023-09-01 10:44:21,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 314 transitions, 676 flow [2023-09-01 10:44:22,044 INFO L130 PetriNetUnfolder]: 197/1046 cut-off events. [2023-09-01 10:44:22,044 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-09-01 10:44:22,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 1046 events. 197/1046 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6040 event pairs, 1 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 647. Up to 32 conditions per place. [2023-09-01 10:44:22,098 INFO L119 LiptonReduction]: Number of co-enabled transitions 57240 [2023-09-01 10:44:25,805 INFO L134 LiptonReduction]: Checked pairs total: 124201 [2023-09-01 10:44:25,805 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-09-01 10:44:25,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:25,808 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;@12e7f2cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:25,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:44:25,819 INFO L130 PetriNetUnfolder]: 28/119 cut-off events. [2023-09-01 10:44:25,820 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 10:44:25,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:25,820 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:44:25,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:25,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash 196679887, now seen corresponding path program 1 times [2023-09-01 10:44:25,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:25,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10789698] [2023-09-01 10:44:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:25,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:25,846 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:25,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:25,869 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:25,869 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:44:25,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:44:25,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:44:25,870 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:25,870 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:44:25,871 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:25,871 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:44:25,930 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:44:25,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 428 transitions, 934 flow [2023-09-01 10:44:26,621 INFO L130 PetriNetUnfolder]: 664/2996 cut-off events. [2023-09-01 10:44:26,626 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-09-01 10:44:26,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3447 conditions, 2996 events. 664/2996 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 21378 event pairs, 32 based on Foata normal form. 0/2505 useless extension candidates. Maximal degree in co-relation 1924. Up to 192 conditions per place. [2023-09-01 10:44:26,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 353 places, 428 transitions, 934 flow [2023-09-01 10:44:26,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 353 places, 428 transitions, 934 flow [2023-09-01 10:44:26,750 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:26,750 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 353 places, 428 transitions, 934 flow [2023-09-01 10:44:26,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 353 places, 428 transitions, 934 flow [2023-09-01 10:44:26,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 428 transitions, 934 flow [2023-09-01 10:44:27,460 INFO L130 PetriNetUnfolder]: 664/2996 cut-off events. [2023-09-01 10:44:27,460 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-09-01 10:44:27,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3447 conditions, 2996 events. 664/2996 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 21378 event pairs, 32 based on Foata normal form. 0/2505 useless extension candidates. Maximal degree in co-relation 1924. Up to 192 conditions per place. [2023-09-01 10:44:27,660 INFO L119 LiptonReduction]: Number of co-enabled transitions 124092 [2023-09-01 10:44:32,056 INFO L134 LiptonReduction]: Checked pairs total: 308591 [2023-09-01 10:44:32,057 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-09-01 10:44:32,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:32,060 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;@12e7f2cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:32,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:44:32,076 INFO L130 PetriNetUnfolder]: 67/252 cut-off events. [2023-09-01 10:44:32,076 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-09-01 10:44:32,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:32,076 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:44:32,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:32,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:32,077 INFO L85 PathProgramCache]: Analyzing trace with hash 218387480, now seen corresponding path program 1 times [2023-09-01 10:44:32,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:32,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385607846] [2023-09-01 10:44:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:32,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:32,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:32,117 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:32,117 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:32,118 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:44:32,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:44:32,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:44:32,118 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:32,119 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:44:32,119 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:32,119 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:44:32,159 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 10:44:32,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 542 transitions, 1196 flow [2023-09-01 10:44:34,893 INFO L130 PetriNetUnfolder]: 2647/9880 cut-off events. [2023-09-01 10:44:34,893 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-09-01 10:44:35,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12045 conditions, 9880 events. 2647/9880 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 86783 event pairs, 313 based on Foata normal form. 0/8484 useless extension candidates. Maximal degree in co-relation 6275. Up to 1024 conditions per place. [2023-09-01 10:44:35,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 443 places, 542 transitions, 1196 flow [2023-09-01 10:44:35,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 443 places, 542 transitions, 1196 flow [2023-09-01 10:44:35,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:35,234 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 443 places, 542 transitions, 1196 flow [2023-09-01 10:44:35,235 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 443 places, 542 transitions, 1196 flow [2023-09-01 10:44:35,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 542 transitions, 1196 flow [2023-09-01 10:44:37,720 INFO L130 PetriNetUnfolder]: 2647/9880 cut-off events. [2023-09-01 10:44:37,720 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-09-01 10:44:37,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12045 conditions, 9880 events. 2647/9880 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 86783 event pairs, 313 based on Foata normal form. 0/8484 useless extension candidates. Maximal degree in co-relation 6275. Up to 1024 conditions per place. [2023-09-01 10:44:38,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 216432 [2023-09-01 10:44:43,243 INFO L134 LiptonReduction]: Checked pairs total: 554114 [2023-09-01 10:44:43,243 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-09-01 10:44:43,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:43,246 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;@12e7f2cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:43,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:44:43,278 INFO L130 PetriNetUnfolder]: 126/452 cut-off events. [2023-09-01 10:44:43,279 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-09-01 10:44:43,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:43,279 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:43,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:43,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:43,280 INFO L85 PathProgramCache]: Analyzing trace with hash -799960040, now seen corresponding path program 1 times [2023-09-01 10:44:43,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:43,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410186411] [2023-09-01 10:44:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:43,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:43,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:43,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:43,322 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:43,323 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:44:43,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:44:43,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:44:43,323 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:43,324 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:44:43,324 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:43,324 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:44:43,370 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 10:44:43,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 656 transitions, 1462 flow [2023-09-01 10:44:55,291 INFO L130 PetriNetUnfolder]: 11762/37250 cut-off events. [2023-09-01 10:44:55,291 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-09-01 10:44:56,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47676 conditions, 37250 events. 11762/37250 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 400008 event pairs, 2148 based on Foata normal form. 0/32615 useless extension candidates. Maximal degree in co-relation 23645. Up to 5120 conditions per place. [2023-09-01 10:44:56,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 533 places, 656 transitions, 1462 flow [2023-09-01 10:44:56,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 533 places, 656 transitions, 1462 flow [2023-09-01 10:44:56,994 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:56,994 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 533 places, 656 transitions, 1462 flow [2023-09-01 10:44:56,995 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 533 places, 656 transitions, 1462 flow [2023-09-01 10:44:56,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 656 transitions, 1462 flow [2023-09-01 10:45:08,471 INFO L130 PetriNetUnfolder]: 11762/37250 cut-off events. [2023-09-01 10:45:08,472 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-09-01 10:45:09,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47676 conditions, 37250 events. 11762/37250 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 400008 event pairs, 2148 based on Foata normal form. 0/32615 useless extension candidates. Maximal degree in co-relation 23645. Up to 5120 conditions per place. [2023-09-01 10:45:12,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 334260 [2023-09-01 10:45:17,251 INFO L134 LiptonReduction]: Checked pairs total: 887315 [2023-09-01 10:45:17,251 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-09-01 10:45:17,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:45:17,254 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;@12e7f2cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:45:17,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:45:17,326 INFO L130 PetriNetUnfolder]: 248/843 cut-off events. [2023-09-01 10:45:17,327 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-09-01 10:45:17,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:45:17,327 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:45:17,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:45:17,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:45:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1795713948, now seen corresponding path program 1 times [2023-09-01 10:45:17,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:45:17,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044162915] [2023-09-01 10:45:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:45:17,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:45:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:45:17,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:45:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:45:17,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:45:17,400 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:45:17,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:45:17,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:45:17,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:45:17,401 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:45:17,401 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:45:17,402 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:45:17,402 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:45:17,454 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 10:45:17,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 623 places, 770 transitions, 1732 flow [2023-09-01 10:46:24,460 INFO L130 PetriNetUnfolder]: 53929/150770 cut-off events. [2023-09-01 10:46:24,461 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-09-01 10:46:32,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200199 conditions, 150770 events. 53929/150770 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 1866. Compared 1906485 event pairs, 12465 based on Foata normal form. 0/133650 useless extension candidates. Maximal degree in co-relation 97243. Up to 24576 conditions per place. [2023-09-01 10:46:32,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 623 places, 770 transitions, 1732 flow [2023-09-01 10:46:38,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 623 places, 770 transitions, 1732 flow [2023-09-01 10:46:38,649 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:46:38,649 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 623 places, 770 transitions, 1732 flow [2023-09-01 10:46:38,649 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 623 places, 770 transitions, 1732 flow [2023-09-01 10:46:38,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 623 places, 770 transitions, 1732 flow [2023-09-01 10:47:38,927 INFO L130 PetriNetUnfolder]: 53929/150770 cut-off events. [2023-09-01 10:47:38,927 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-09-01 10:47:47,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200199 conditions, 150770 events. 53929/150770 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 1866. Compared 1906485 event pairs, 12465 based on Foata normal form. 0/133650 useless extension candidates. Maximal degree in co-relation 97243. Up to 24576 conditions per place. [2023-09-01 10:48:11,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 477576 [2023-09-01 10:48:16,882 INFO L134 LiptonReduction]: Checked pairs total: 1153240 [2023-09-01 10:48:16,883 INFO L136 LiptonReduction]: Total number of compositions: 486 [2023-09-01 10:48:16,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:48:16,885 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;@12e7f2cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:48:16,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:48:17,006 INFO L130 PetriNetUnfolder]: 367/1212 cut-off events. [2023-09-01 10:48:17,007 INFO L131 PetriNetUnfolder]: For 342/342 co-relation queries the response was YES. [2023-09-01 10:48:17,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:48:17,007 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:48:17,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:48:17,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:48:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash -494352450, now seen corresponding path program 1 times [2023-09-01 10:48:17,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:48:17,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107842447] [2023-09-01 10:48:17,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:48:17,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:48:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:17,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:48:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:17,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:48:17,099 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:48:17,099 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:48:17,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:48:17,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:48:17,099 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:48:17,100 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:48:17,100 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:48:17,100 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:48:17,160 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-09-01 10:48:17,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 713 places, 884 transitions, 2006 flow