./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --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 06:26:55,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:26:55,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:26:55,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:26:55,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:26:55,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:26:55,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:26:55,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:26:55,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:26:55,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:26:55,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:26:55,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:26:55,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:26:55,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:26:55,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:26:55,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:26:55,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:26:55,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:26:55,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:26:55,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:26:55,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:26:55,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:26:55,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:26:55,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:26:55,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:26:55,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:26:55,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:26:55,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:26:55,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:26:55,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:26:55,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:26:55,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:26:55,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:26:55,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:26:55,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:26:55,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:26:55,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:26:55,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:26:55,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:26:55,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:26:55,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:26:55,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:26:55,873 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:26:55,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:26:55,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:26:55,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:26:55,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:26:55,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:26:55,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:26:55,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:26:55,876 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:26:55,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:26:55,877 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:26:55,878 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:26:55,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:26:55,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:26:55,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:26:55,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:26:55,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:26:55,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:26:55,879 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:26:55,879 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:26:55,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:26:55,880 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:26:55,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:26:55,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:26:55,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:26:55,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:26:55,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:26:55,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:26:55,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:26:55,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:26:55,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:26:55,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:26:55,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:26:55,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:26:55,882 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:26:55,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:26:55,883 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:26:55,883 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:26:56,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:26:56,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:26:56,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:26:56,205 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:26:56,206 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:26:56,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-09-01 06:26:57,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:26:57,779 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:26:57,779 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-09-01 06:26:57,800 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8027c38e/4411e72b1af542678da8861cf6ae0e90/FLAG11cfa7437 [2023-09-01 06:26:57,813 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8027c38e/4411e72b1af542678da8861cf6ae0e90 [2023-09-01 06:26:57,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:26:57,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:26:57,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:26:57,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:26:57,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:26:57,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:26:57" (1/1) ... [2023-09-01 06:26:57,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5251691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:57, skipping insertion in model container [2023-09-01 06:26:57,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:26:57" (1/1) ... [2023-09-01 06:26:57,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:26:57,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:26:58,100 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_02-simple_racefree.i[30176,30189] [2023-09-01 06:26:58,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:26:58,145 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:26:58,190 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_02-simple_racefree.i[30176,30189] [2023-09-01 06:26:58,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:26:58,253 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:26:58,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58 WrapperNode [2023-09-01 06:26:58,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:26:58,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:26:58,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:26:58,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:26:58,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,324 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-09-01 06:26:58,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:26:58,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:26:58,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:26:58,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:26:58,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,369 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:26:58,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:26:58,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:26:58,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:26:58,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (1/1) ... [2023-09-01 06:26:58,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:26:58,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:26:58,414 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 06:26:58,439 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 06:26:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:26:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:26:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:26:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:26:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:26:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:26:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:26:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:26:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:26:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:26:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:26:58,453 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 06:26:58,562 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:26:58,564 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:26:58,785 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:26:58,792 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:26:58,792 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:26:58,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:26:58 BoogieIcfgContainer [2023-09-01 06:26:58,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:26:58,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:26:58,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:26:58,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:26:58,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:26:57" (1/3) ... [2023-09-01 06:26:58,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ae19ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:26:58, skipping insertion in model container [2023-09-01 06:26:58,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:26:58" (2/3) ... [2023-09-01 06:26:58,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ae19ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:26:58, skipping insertion in model container [2023-09-01 06:26:58,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:26:58" (3/3) ... [2023-09-01 06:26:58,809 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2023-09-01 06:26:58,817 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:26:58,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:26:58,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:26:58,826 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:26:58,918 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:26:58,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 123 transitions, 254 flow [2023-09-01 06:26:59,003 INFO L130 PetriNetUnfolder]: 17/155 cut-off events. [2023-09-01 06:26:59,003 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:26:59,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 155 events. 17/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 336 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-09-01 06:26:59,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 123 transitions, 254 flow [2023-09-01 06:26:59,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 114 transitions, 233 flow [2023-09-01 06:26:59,018 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:26:59,027 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 114 transitions, 233 flow [2023-09-01 06:26:59,030 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 114 transitions, 233 flow [2023-09-01 06:26:59,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 114 transitions, 233 flow [2023-09-01 06:26:59,085 INFO L130 PetriNetUnfolder]: 16/146 cut-off events. [2023-09-01 06:26:59,086 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:26:59,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 146 events. 16/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 321 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-09-01 06:26:59,089 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-09-01 06:27:02,135 INFO L134 LiptonReduction]: Checked pairs total: 5240 [2023-09-01 06:27:02,135 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-09-01 06:27:02,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:27:02,155 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:27:02,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:27:02,162 INFO L130 PetriNetUnfolder]: 3/28 cut-off events. [2023-09-01 06:27:02,162 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:27:02,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:02,163 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:27:02,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:27:02,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:02,168 INFO L85 PathProgramCache]: Analyzing trace with hash 925683293, now seen corresponding path program 1 times [2023-09-01 06:27:02,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:02,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419188088] [2023-09-01 06:27:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:02,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:02,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:27:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:02,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:27:02,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:27:02,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:27:02,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:27:02,407 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:27:02,415 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:27:02,416 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:27:02,416 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:27:02,446 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:27:02,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 161 transitions, 340 flow [2023-09-01 06:27:02,489 INFO L130 PetriNetUnfolder]: 31/261 cut-off events. [2023-09-01 06:27:02,489 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:27:02,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 261 events. 31/261 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 719 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2023-09-01 06:27:02,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 161 transitions, 340 flow [2023-09-01 06:27:02,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 161 transitions, 340 flow [2023-09-01 06:27:02,495 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:27:02,495 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 161 transitions, 340 flow [2023-09-01 06:27:02,495 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 161 transitions, 340 flow [2023-09-01 06:27:02,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 161 transitions, 340 flow [2023-09-01 06:27:02,553 INFO L130 PetriNetUnfolder]: 31/261 cut-off events. [2023-09-01 06:27:02,553 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:27:02,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 261 events. 31/261 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 719 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2023-09-01 06:27:02,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 10008 [2023-09-01 06:27:05,453 INFO L134 LiptonReduction]: Checked pairs total: 24569 [2023-09-01 06:27:05,454 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-09-01 06:27:05,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:27:05,457 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:27:05,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:27:05,463 INFO L130 PetriNetUnfolder]: 12/66 cut-off events. [2023-09-01 06:27:05,464 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:27:05,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:05,464 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:27:05,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:27:05,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash -900657358, now seen corresponding path program 1 times [2023-09-01 06:27:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:05,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564251178] [2023-09-01 06:27:05,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:05,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:05,496 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:27:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:05,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:27:05,523 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:27:05,524 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:27:05,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:27:05,524 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:27:05,525 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:27:05,525 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:27:05,525 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:27:05,550 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:27:05,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 199 transitions, 428 flow [2023-09-01 06:27:05,635 INFO L130 PetriNetUnfolder]: 50/406 cut-off events. [2023-09-01 06:27:05,636 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:27:05,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 406 events. 50/406 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1304 event pairs, 1 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 269. Up to 16 conditions per place. [2023-09-01 06:27:05,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 199 transitions, 428 flow [2023-09-01 06:27:05,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 199 transitions, 428 flow [2023-09-01 06:27:05,649 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:27:05,649 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 199 transitions, 428 flow [2023-09-01 06:27:05,650 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 199 transitions, 428 flow [2023-09-01 06:27:05,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 199 transitions, 428 flow [2023-09-01 06:27:05,699 INFO L130 PetriNetUnfolder]: 50/406 cut-off events. [2023-09-01 06:27:05,699 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:27:05,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 406 events. 50/406 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1304 event pairs, 1 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 269. Up to 16 conditions per place. [2023-09-01 06:27:05,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 19224 [2023-09-01 06:27:08,685 INFO L134 LiptonReduction]: Checked pairs total: 50892 [2023-09-01 06:27:08,685 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-09-01 06:27:08,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:27:08,689 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:27:08,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:27:08,703 INFO L130 PetriNetUnfolder]: 22/108 cut-off events. [2023-09-01 06:27:08,704 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:27:08,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:08,704 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:27:08,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:27:08,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1050952730, now seen corresponding path program 1 times [2023-09-01 06:27:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:08,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265146030] [2023-09-01 06:27:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:08,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:08,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:27:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:08,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:27:08,778 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:27:08,779 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:27:08,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:27:08,780 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:27:08,781 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:27:08,781 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:27:08,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:27:08,814 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:27:08,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 237 transitions, 518 flow [2023-09-01 06:27:08,901 INFO L130 PetriNetUnfolder]: 81/631 cut-off events. [2023-09-01 06:27:08,902 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:27:08,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 631 events. 81/631 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2378 event pairs, 6 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 426. Up to 32 conditions per place. [2023-09-01 06:27:08,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 237 transitions, 518 flow [2023-09-01 06:27:08,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 237 transitions, 518 flow [2023-09-01 06:27:08,913 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:27:08,913 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 237 transitions, 518 flow [2023-09-01 06:27:08,913 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 237 transitions, 518 flow [2023-09-01 06:27:08,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 237 transitions, 518 flow [2023-09-01 06:27:08,992 INFO L130 PetriNetUnfolder]: 81/631 cut-off events. [2023-09-01 06:27:08,992 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:27:08,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 631 events. 81/631 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2378 event pairs, 6 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 426. Up to 32 conditions per place. [2023-09-01 06:27:09,015 INFO L119 LiptonReduction]: Number of co-enabled transitions 31248 [2023-09-01 06:27:12,113 INFO L134 LiptonReduction]: Checked pairs total: 85994 [2023-09-01 06:27:12,114 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-09-01 06:27:12,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:27:12,121 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:27:12,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:27:12,145 INFO L130 PetriNetUnfolder]: 33/162 cut-off events. [2023-09-01 06:27:12,146 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:27:12,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:12,147 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:27:12,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:27:12,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:12,148 INFO L85 PathProgramCache]: Analyzing trace with hash -258729820, now seen corresponding path program 1 times [2023-09-01 06:27:12,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:12,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971476137] [2023-09-01 06:27:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:12,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:12,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:27:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:12,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:27:12,233 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:27:12,233 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:27:12,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:27:12,233 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:27:12,234 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:27:12,234 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:27:12,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:27:12,253 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:27:12,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 275 transitions, 610 flow [2023-09-01 06:27:12,417 INFO L130 PetriNetUnfolder]: 140/1020 cut-off events. [2023-09-01 06:27:12,417 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:27:12,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 1020 events. 140/1020 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4653 event pairs, 23 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 676. Up to 80 conditions per place. [2023-09-01 06:27:12,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 275 transitions, 610 flow [2023-09-01 06:27:12,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 275 transitions, 610 flow [2023-09-01 06:27:12,433 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:27:12,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 275 transitions, 610 flow [2023-09-01 06:27:12,434 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 275 transitions, 610 flow [2023-09-01 06:27:12,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 275 transitions, 610 flow [2023-09-01 06:27:12,604 INFO L130 PetriNetUnfolder]: 140/1020 cut-off events. [2023-09-01 06:27:12,604 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:27:12,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 1020 events. 140/1020 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4653 event pairs, 23 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 676. Up to 80 conditions per place. [2023-09-01 06:27:12,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 46080 [2023-09-01 06:27:15,745 INFO L134 LiptonReduction]: Checked pairs total: 132609 [2023-09-01 06:27:15,745 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-09-01 06:27:15,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:27:15,748 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:27:15,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:27:15,771 INFO L130 PetriNetUnfolder]: 46/221 cut-off events. [2023-09-01 06:27:15,771 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:27:15,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:15,772 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:27:15,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:27:15,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash -938532164, now seen corresponding path program 1 times [2023-09-01 06:27:15,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:15,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760458784] [2023-09-01 06:27:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:15,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:15,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:27:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:15,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:27:15,861 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:27:15,862 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:27:15,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:27:15,863 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:27:15,866 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:27:15,867 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:27:15,867 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:27:15,895 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:27:15,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 313 transitions, 704 flow [2023-09-01 06:27:16,222 INFO L130 PetriNetUnfolder]: 263/1745 cut-off events. [2023-09-01 06:27:16,222 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:27:16,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 1745 events. 263/1745 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9915 event pairs, 72 based on Foata normal form. 0/1384 useless extension candidates. Maximal degree in co-relation 1119. Up to 192 conditions per place. [2023-09-01 06:27:16,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 313 transitions, 704 flow [2023-09-01 06:27:16,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 313 transitions, 704 flow [2023-09-01 06:27:16,258 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:27:16,259 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 313 transitions, 704 flow [2023-09-01 06:27:16,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 313 transitions, 704 flow [2023-09-01 06:27:16,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 313 transitions, 704 flow [2023-09-01 06:27:16,613 INFO L130 PetriNetUnfolder]: 263/1745 cut-off events. [2023-09-01 06:27:16,614 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:27:16,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 1745 events. 263/1745 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9915 event pairs, 72 based on Foata normal form. 0/1384 useless extension candidates. Maximal degree in co-relation 1119. Up to 192 conditions per place. [2023-09-01 06:27:16,693 INFO L119 LiptonReduction]: Number of co-enabled transitions 63720 [2023-09-01 06:27:20,021 INFO L134 LiptonReduction]: Checked pairs total: 185939 [2023-09-01 06:27:20,022 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-09-01 06:27:20,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:27:20,024 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:27:20,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:27:20,057 INFO L130 PetriNetUnfolder]: 62/297 cut-off events. [2023-09-01 06:27:20,057 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:27:20,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:20,058 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:27:20,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:27:20,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1962330057, now seen corresponding path program 1 times [2023-09-01 06:27:20,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:20,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372273647] [2023-09-01 06:27:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:20,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:20,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:27:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:20,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:27:20,101 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:27:20,101 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:27:20,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:27:20,101 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:27:20,102 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:27:20,102 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:27:20,102 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:27:20,127 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:27:20,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 351 transitions, 800 flow [2023-09-01 06:27:20,848 INFO L130 PetriNetUnfolder]: 530/3158 cut-off events. [2023-09-01 06:27:20,849 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:27:20,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3656 conditions, 3158 events. 530/3158 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22032 event pairs, 201 based on Foata normal form. 0/2524 useless extension candidates. Maximal degree in co-relation 1963. Up to 448 conditions per place. [2023-09-01 06:27:20,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 351 transitions, 800 flow [2023-09-01 06:27:20,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 351 transitions, 800 flow [2023-09-01 06:27:20,915 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:27:20,916 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 351 transitions, 800 flow [2023-09-01 06:27:20,916 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 351 transitions, 800 flow [2023-09-01 06:27:20,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 351 transitions, 800 flow [2023-09-01 06:27:21,639 INFO L130 PetriNetUnfolder]: 530/3158 cut-off events. [2023-09-01 06:27:21,640 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:27:21,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3656 conditions, 3158 events. 530/3158 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22032 event pairs, 201 based on Foata normal form. 0/2524 useless extension candidates. Maximal degree in co-relation 1963. Up to 448 conditions per place. [2023-09-01 06:27:21,796 INFO L119 LiptonReduction]: Number of co-enabled transitions 84168 [2023-09-01 06:27:25,711 INFO L134 LiptonReduction]: Checked pairs total: 275739 [2023-09-01 06:27:25,711 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-09-01 06:27:25,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:27:25,713 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:27:25,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:27:25,746 INFO L130 PetriNetUnfolder]: 83/397 cut-off events. [2023-09-01 06:27:25,746 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:27:25,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:25,746 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:27:25,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:27:25,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:25,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1338852403, now seen corresponding path program 1 times [2023-09-01 06:27:25,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:25,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744136920] [2023-09-01 06:27:25,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:25,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:25,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:27:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:25,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:27:25,788 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:27:25,788 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:27:25,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:27:25,788 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:27:25,789 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:27:25,789 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:27:25,789 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:27:25,814 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:27:25,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 389 transitions, 898 flow [2023-09-01 06:27:27,041 INFO L130 PetriNetUnfolder]: 1117/5979 cut-off events. [2023-09-01 06:27:27,042 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:27:27,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7064 conditions, 5979 events. 1117/5979 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 49545 event pairs, 522 based on Foata normal form. 0/4816 useless extension candidates. Maximal degree in co-relation 3640. Up to 1024 conditions per place. [2023-09-01 06:27:27,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 389 transitions, 898 flow [2023-09-01 06:27:27,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 389 transitions, 898 flow [2023-09-01 06:27:27,190 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:27:27,190 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 389 transitions, 898 flow [2023-09-01 06:27:27,191 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 389 transitions, 898 flow [2023-09-01 06:27:27,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 389 transitions, 898 flow [2023-09-01 06:27:28,443 INFO L130 PetriNetUnfolder]: 1117/5979 cut-off events. [2023-09-01 06:27:28,443 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:27:28,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7064 conditions, 5979 events. 1117/5979 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 49545 event pairs, 522 based on Foata normal form. 0/4816 useless extension candidates. Maximal degree in co-relation 3640. Up to 1024 conditions per place. [2023-09-01 06:27:28,808 INFO L119 LiptonReduction]: Number of co-enabled transitions 107424 [2023-09-01 06:27:32,813 INFO L134 LiptonReduction]: Checked pairs total: 358542 [2023-09-01 06:27:32,813 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-09-01 06:27:32,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:27:32,815 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:27:32,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:27:32,880 INFO L130 PetriNetUnfolder]: 113/533 cut-off events. [2023-09-01 06:27:32,880 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:27:32,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:32,881 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:27:32,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:27:32,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:32,882 INFO L85 PathProgramCache]: Analyzing trace with hash -643446045, now seen corresponding path program 1 times [2023-09-01 06:27:32,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:32,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274814507] [2023-09-01 06:27:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:32,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:32,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:27:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:32,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:27:32,926 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:27:32,926 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:27:32,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:27:32,927 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:27:32,927 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:27:32,928 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:27:32,928 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:27:32,960 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:27:32,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 427 transitions, 998 flow [2023-09-01 06:27:35,620 INFO L130 PetriNetUnfolder]: 2408/11680 cut-off events. [2023-09-01 06:27:35,621 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:27:35,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14057 conditions, 11680 events. 2408/11680 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113171 event pairs, 1291 based on Foata normal form. 0/9476 useless extension candidates. Maximal degree in co-relation 7046. Up to 2304 conditions per place. [2023-09-01 06:27:35,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 427 transitions, 998 flow [2023-09-01 06:27:35,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 427 transitions, 998 flow [2023-09-01 06:27:35,839 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:27:35,839 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 378 places, 427 transitions, 998 flow [2023-09-01 06:27:35,839 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 378 places, 427 transitions, 998 flow [2023-09-01 06:27:35,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 427 transitions, 998 flow [2023-09-01 06:27:38,303 INFO L130 PetriNetUnfolder]: 2408/11680 cut-off events. [2023-09-01 06:27:38,304 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:27:38,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14057 conditions, 11680 events. 2408/11680 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113171 event pairs, 1291 based on Foata normal form. 0/9476 useless extension candidates. Maximal degree in co-relation 7046. Up to 2304 conditions per place. [2023-09-01 06:27:39,028 INFO L119 LiptonReduction]: Number of co-enabled transitions 133488 [2023-09-01 06:27:43,109 INFO L134 LiptonReduction]: Checked pairs total: 456618 [2023-09-01 06:27:43,109 INFO L136 LiptonReduction]: Total number of compositions: 296 [2023-09-01 06:27:43,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:27:43,112 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:27:43,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:27:43,191 INFO L130 PetriNetUnfolder]: 159/729 cut-off events. [2023-09-01 06:27:43,192 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:27:43,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:43,192 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:27:43,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:27:43,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1649228218, now seen corresponding path program 1 times [2023-09-01 06:27:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201784089] [2023-09-01 06:27:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:43,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:27:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:27:43,233 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:27:43,233 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:27:43,233 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:27:43,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:27:43,234 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:27:43,234 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:27:43,234 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:27:43,235 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:27:43,263 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:27:43,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 465 transitions, 1100 flow [2023-09-01 06:27:48,985 INFO L130 PetriNetUnfolder]: 5235/23269 cut-off events. [2023-09-01 06:27:48,985 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:27:49,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28475 conditions, 23269 events. 5235/23269 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 256405 event pairs, 3084 based on Foata normal form. 0/19000 useless extension candidates. Maximal degree in co-relation 14037. Up to 5120 conditions per place. [2023-09-01 06:27:49,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 465 transitions, 1100 flow [2023-09-01 06:27:49,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 465 transitions, 1100 flow [2023-09-01 06:27:49,768 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:27:49,768 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 465 transitions, 1100 flow [2023-09-01 06:27:49,769 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 465 transitions, 1100 flow [2023-09-01 06:27:49,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 465 transitions, 1100 flow [2023-09-01 06:27:55,508 INFO L130 PetriNetUnfolder]: 5235/23269 cut-off events. [2023-09-01 06:27:55,508 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:27:55,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28475 conditions, 23269 events. 5235/23269 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 256405 event pairs, 3084 based on Foata normal form. 0/19000 useless extension candidates. Maximal degree in co-relation 14037. Up to 5120 conditions per place. [2023-09-01 06:27:56,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 162360 [2023-09-01 06:28:01,414 INFO L134 LiptonReduction]: Checked pairs total: 507695 [2023-09-01 06:28:01,414 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-09-01 06:28:01,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:28:01,417 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:28:01,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:28:01,613 INFO L130 PetriNetUnfolder]: 234/1016 cut-off events. [2023-09-01 06:28:01,613 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:28:01,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:28:01,614 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:28:01,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:28:01,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:28:01,614 INFO L85 PathProgramCache]: Analyzing trace with hash 285174213, now seen corresponding path program 1 times [2023-09-01 06:28:01,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:28:01,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671406498] [2023-09-01 06:28:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:28:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:28:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:01,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:28:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:01,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:28:01,699 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:28:01,699 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:28:01,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:28:01,699 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:28:01,700 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:28:01,700 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:28:01,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:28:01,739 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:28:01,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 444 places, 503 transitions, 1204 flow [2023-09-01 06:28:14,404 INFO L130 PetriNetUnfolder]: 11390/46890 cut-off events. [2023-09-01 06:28:14,405 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:28:15,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58254 conditions, 46890 events. 11390/46890 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 574826 event pairs, 7181 based on Foata normal form. 0/38508 useless extension candidates. Maximal degree in co-relation 28453. Up to 11264 conditions per place. [2023-09-01 06:28:15,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 444 places, 503 transitions, 1204 flow [2023-09-01 06:28:16,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 444 places, 503 transitions, 1204 flow [2023-09-01 06:28:16,148 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:28:16,148 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 444 places, 503 transitions, 1204 flow [2023-09-01 06:28:16,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 444 places, 503 transitions, 1204 flow [2023-09-01 06:28:16,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 444 places, 503 transitions, 1204 flow [2023-09-01 06:28:28,692 INFO L130 PetriNetUnfolder]: 11390/46890 cut-off events. [2023-09-01 06:28:28,692 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:28:30,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58254 conditions, 46890 events. 11390/46890 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 574826 event pairs, 7181 based on Foata normal form. 0/38508 useless extension candidates. Maximal degree in co-relation 28453. Up to 11264 conditions per place. [2023-09-01 06:28:32,959 INFO L119 LiptonReduction]: Number of co-enabled transitions 194040 [2023-09-01 06:28:37,285 INFO L134 LiptonReduction]: Checked pairs total: 605550 [2023-09-01 06:28:37,285 INFO L136 LiptonReduction]: Total number of compositions: 347 [2023-09-01 06:28:37,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:28:37,286 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:28:37,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:28:37,463 INFO L130 PetriNetUnfolder]: 360/1452 cut-off events. [2023-09-01 06:28:37,463 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:28:37,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:28:37,463 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:28:37,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:28:37,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:28:37,464 INFO L85 PathProgramCache]: Analyzing trace with hash -389668358, now seen corresponding path program 1 times [2023-09-01 06:28:37,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:28:37,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581187982] [2023-09-01 06:28:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:28:37,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:28:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:37,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:28:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:37,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:28:37,532 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:28:37,532 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:28:37,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:28:37,533 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:28:37,533 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:28:37,533 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:28:37,533 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:28:37,578 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:28:37,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 477 places, 541 transitions, 1310 flow [2023-09-01 06:29:06,179 INFO L130 PetriNetUnfolder]: 24713/95087 cut-off events. [2023-09-01 06:29:06,179 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:29:11,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119778 conditions, 95087 events. 24713/95087 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 1276237 event pairs, 16398 based on Foata normal form. 0/78496 useless extension candidates. Maximal degree in co-relation 58230. Up to 24576 conditions per place. [2023-09-01 06:29:11,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 477 places, 541 transitions, 1310 flow [2023-09-01 06:29:13,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 477 places, 541 transitions, 1310 flow [2023-09-01 06:29:13,664 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:29:13,664 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 477 places, 541 transitions, 1310 flow [2023-09-01 06:29:13,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 477 places, 541 transitions, 1310 flow [2023-09-01 06:29:13,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 477 places, 541 transitions, 1310 flow [2023-09-01 06:29:40,914 INFO L130 PetriNetUnfolder]: 24713/95087 cut-off events. [2023-09-01 06:29:40,914 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:29:45,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119778 conditions, 95087 events. 24713/95087 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 1276237 event pairs, 16398 based on Foata normal form. 0/78496 useless extension candidates. Maximal degree in co-relation 58230. Up to 24576 conditions per place. [2023-09-01 06:29:55,209 INFO L119 LiptonReduction]: Number of co-enabled transitions 228528 [2023-09-01 06:29:59,713 INFO L134 LiptonReduction]: Checked pairs total: 718128 [2023-09-01 06:29:59,713 INFO L136 LiptonReduction]: Total number of compositions: 375 [2023-09-01 06:29:59,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:29:59,716 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:29:59,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:29:59,964 INFO L130 PetriNetUnfolder]: 572/2125 cut-off events. [2023-09-01 06:29:59,964 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:29:59,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:29:59,964 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:29:59,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:29:59,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:29:59,965 INFO L85 PathProgramCache]: Analyzing trace with hash 926307320, now seen corresponding path program 1 times [2023-09-01 06:29:59,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:29:59,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310975900] [2023-09-01 06:29:59,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:29:59,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:29:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:29:59,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:30:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:00,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:30:00,010 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:30:00,010 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:30:00,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:30:00,011 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:30:00,011 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:30:00,011 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:30:00,011 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:30:00,050 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:30:00,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 510 places, 579 transitions, 1418 flow [2023-09-01 06:31:05,725 INFO L130 PetriNetUnfolder]: 53396/193460 cut-off events. [2023-09-01 06:31:05,725 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:31:15,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246839 conditions, 193460 events. 53396/193460 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2893. Compared 2838699 event pairs, 36879 based on Foata normal form. 0/160468 useless extension candidates. Maximal degree in co-relation 119752. Up to 53248 conditions per place. [2023-09-01 06:31:15,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 510 places, 579 transitions, 1418 flow [2023-09-01 06:31:19,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 510 places, 579 transitions, 1418 flow [2023-09-01 06:31:19,705 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:31:19,705 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 510 places, 579 transitions, 1418 flow [2023-09-01 06:31:19,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 510 places, 579 transitions, 1418 flow [2023-09-01 06:31:19,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 510 places, 579 transitions, 1418 flow [2023-09-01 06:32:24,361 INFO L130 PetriNetUnfolder]: 53396/193460 cut-off events. [2023-09-01 06:32:24,362 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:32:34,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246839 conditions, 193460 events. 53396/193460 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2893. Compared 2838699 event pairs, 36879 based on Foata normal form. 0/160468 useless extension candidates. Maximal degree in co-relation 119752. Up to 53248 conditions per place. [2023-09-01 06:32:59,526 INFO L119 LiptonReduction]: Number of co-enabled transitions 265824 [2023-09-01 06:33:04,317 INFO L134 LiptonReduction]: Checked pairs total: 831893 [2023-09-01 06:33:04,317 INFO L136 LiptonReduction]: Total number of compositions: 395 [2023-09-01 06:33:04,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:33:04,319 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;@5a6314a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:33:04,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:33:04,646 INFO L130 PetriNetUnfolder]: 926/3171 cut-off events. [2023-09-01 06:33:04,647 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 06:33:04,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:33:04,647 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:33:04,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:33:04,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:33:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1424034491, now seen corresponding path program 1 times [2023-09-01 06:33:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:33:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135932547] [2023-09-01 06:33:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:33:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:33:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:04,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:33:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:04,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:33:04,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:33:04,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:33:04,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:33:04,709 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:33:04,710 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:33:04,710 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:33:04,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:33:04,751 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 06:33:04,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 617 transitions, 1528 flow