./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --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 11:00:35,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:00:35,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:00:35,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:00:35,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:00:35,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:00:35,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:00:35,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:00:35,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:00:35,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:00:35,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:00:35,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:00:35,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:00:35,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:00:35,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:00:35,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:00:35,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:00:35,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:00:35,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:00:35,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:00:35,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:00:35,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:00:35,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:00:35,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:00:35,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:00:35,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:00:35,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:00:35,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:00:35,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:00:35,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:00:35,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:00:35,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:00:35,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:00:35,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:00:35,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:00:35,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:00:35,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:00:35,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:00:35,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:00:35,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:00:35,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:00:35,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:00:36,009 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:00:36,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:00:36,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:00:36,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:00:36,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:00:36,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:00:36,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:00:36,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:00:36,012 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:00:36,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:00:36,014 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:00:36,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:00:36,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:00:36,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:00:36,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:00:36,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:00:36,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:00:36,015 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:00:36,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:00:36,015 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:00:36,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:00:36,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:00:36,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:00:36,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:00:36,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:00:36,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:00:36,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:00:36,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:00:36,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:00:36,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:00:36,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:00:36,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:00:36,018 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:00:36,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:00:36,018 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:00:36,018 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:00:36,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:00:36,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:00:36,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:00:36,341 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:00:36,342 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:00:36,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-09-01 11:00:37,547 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:00:37,842 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:00:37,842 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-09-01 11:00:37,855 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f474ebce6/52d1774e8f3f4c5bbe512822c0b7c121/FLAGb0119520d [2023-09-01 11:00:37,873 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f474ebce6/52d1774e8f3f4c5bbe512822c0b7c121 [2023-09-01 11:00:37,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:00:37,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:00:37,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:00:37,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:00:37,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:00:37,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:00:37" (1/1) ... [2023-09-01 11:00:37,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:37, skipping insertion in model container [2023-09-01 11:00:37,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:00:37" (1/1) ... [2023-09-01 11:00:37,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:00:37,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:00:38,256 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_36-indirect_racefree.i[30176,30189] [2023-09-01 11:00:38,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:00:38,293 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:00:38,339 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_36-indirect_racefree.i[30176,30189] [2023-09-01 11:00:38,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:00:38,401 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:00:38,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38 WrapperNode [2023-09-01 11:00:38,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:00:38,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:00:38,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:00:38,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:00:38,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,460 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-09-01 11:00:38,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:00:38,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:00:38,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:00:38,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:00:38,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,503 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:00:38,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:00:38,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:00:38,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:00:38,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (1/1) ... [2023-09-01 11:00:38,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:00:38,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:00:38,550 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 11:00:38,573 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 11:00:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:00:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:00:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:00:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:00:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:00:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 11:00:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 11:00:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:00:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:00:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:00:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:00:38,595 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 11:00:38,781 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:00:38,783 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:00:38,974 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:00:38,987 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:00:38,988 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 11:00:38,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:00:38 BoogieIcfgContainer [2023-09-01 11:00:38,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:00:38,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:00:38,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:00:38,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:00:38,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:00:37" (1/3) ... [2023-09-01 11:00:38,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f381f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:00:38, skipping insertion in model container [2023-09-01 11:00:38,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:00:38" (2/3) ... [2023-09-01 11:00:38,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f381f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:00:38, skipping insertion in model container [2023-09-01 11:00:38,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:00:38" (3/3) ... [2023-09-01 11:00:38,998 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2023-09-01 11:00:39,004 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:00:39,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:00:39,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 11:00:39,013 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:00:39,058 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 11:00:39,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 111 transitions, 230 flow [2023-09-01 11:00:39,147 INFO L130 PetriNetUnfolder]: 17/146 cut-off events. [2023-09-01 11:00:39,148 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 11:00:39,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 146 events. 17/146 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 345 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 72. Up to 4 conditions per place. [2023-09-01 11:00:39,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 111 transitions, 230 flow [2023-09-01 11:00:39,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 106 transitions, 217 flow [2023-09-01 11:00:39,161 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:39,176 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 106 transitions, 217 flow [2023-09-01 11:00:39,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 106 transitions, 217 flow [2023-09-01 11:00:39,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 106 transitions, 217 flow [2023-09-01 11:00:39,208 INFO L130 PetriNetUnfolder]: 16/141 cut-off events. [2023-09-01 11:00:39,208 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:00:39,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 141 events. 16/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 72. Up to 4 conditions per place. [2023-09-01 11:00:39,211 INFO L119 LiptonReduction]: Number of co-enabled transitions 2624 [2023-09-01 11:00:41,990 INFO L134 LiptonReduction]: Checked pairs total: 5236 [2023-09-01 11:00:41,991 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-09-01 11:00:42,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:42,009 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:42,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:42,014 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-09-01 11:00:42,014 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:00:42,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:42,015 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:00:42,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:42,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash -276705489, now seen corresponding path program 1 times [2023-09-01 11:00:42,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:42,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356156060] [2023-09-01 11:00:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:42,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:42,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:42,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:42,182 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:42,183 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:42,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:00:42,185 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:42,187 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:42,188 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:42,188 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:00:42,206 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 11:00:42,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 145 transitions, 308 flow [2023-09-01 11:00:42,247 INFO L130 PetriNetUnfolder]: 31/239 cut-off events. [2023-09-01 11:00:42,247 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:00:42,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 239 events. 31/239 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 711 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2023-09-01 11:00:42,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 145 transitions, 308 flow [2023-09-01 11:00:42,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 145 transitions, 308 flow [2023-09-01 11:00:42,252 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:42,252 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 145 transitions, 308 flow [2023-09-01 11:00:42,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 145 transitions, 308 flow [2023-09-01 11:00:42,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 145 transitions, 308 flow [2023-09-01 11:00:42,287 INFO L130 PetriNetUnfolder]: 31/239 cut-off events. [2023-09-01 11:00:42,293 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:00:42,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 239 events. 31/239 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 711 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2023-09-01 11:00:42,301 INFO L119 LiptonReduction]: Number of co-enabled transitions 8000 [2023-09-01 11:00:44,962 INFO L134 LiptonReduction]: Checked pairs total: 16190 [2023-09-01 11:00:44,962 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-09-01 11:00:44,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:44,965 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:44,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:44,971 INFO L130 PetriNetUnfolder]: 10/56 cut-off events. [2023-09-01 11:00:44,971 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 11:00:44,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:44,972 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:00:44,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:44,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:44,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1943664084, now seen corresponding path program 1 times [2023-09-01 11:00:44,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:44,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668821984] [2023-09-01 11:00:44,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:44,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:45,001 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:45,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:45,027 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:45,027 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:45,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:00:45,028 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:45,029 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:45,029 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:45,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:00:45,047 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 11:00:45,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 179 transitions, 388 flow [2023-09-01 11:00:45,101 INFO L130 PetriNetUnfolder]: 50/363 cut-off events. [2023-09-01 11:00:45,102 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:00:45,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 363 events. 50/363 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1208 event pairs, 1 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 247. Up to 16 conditions per place. [2023-09-01 11:00:45,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 179 transitions, 388 flow [2023-09-01 11:00:45,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 179 transitions, 388 flow [2023-09-01 11:00:45,109 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:45,109 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 179 transitions, 388 flow [2023-09-01 11:00:45,109 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 179 transitions, 388 flow [2023-09-01 11:00:45,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 179 transitions, 388 flow [2023-09-01 11:00:45,144 INFO L130 PetriNetUnfolder]: 50/363 cut-off events. [2023-09-01 11:00:45,144 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:00:45,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 363 events. 50/363 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1208 event pairs, 1 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 247. Up to 16 conditions per place. [2023-09-01 11:00:45,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 15360 [2023-09-01 11:00:47,895 INFO L134 LiptonReduction]: Checked pairs total: 34439 [2023-09-01 11:00:47,895 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-09-01 11:00:47,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:47,899 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:47,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:47,906 INFO L130 PetriNetUnfolder]: 19/89 cut-off events. [2023-09-01 11:00:47,907 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 11:00:47,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:47,907 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:00:47,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:47,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash 702688715, now seen corresponding path program 1 times [2023-09-01 11:00:47,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:47,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781798529] [2023-09-01 11:00:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:47,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:47,938 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:47,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:47,961 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:47,961 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:47,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:00:47,962 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:47,963 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:47,963 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:47,963 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:00:47,981 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 11:00:47,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 213 transitions, 470 flow [2023-09-01 11:00:48,045 INFO L130 PetriNetUnfolder]: 81/551 cut-off events. [2023-09-01 11:00:48,045 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:00:48,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 551 events. 81/551 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2139 event pairs, 6 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 383. Up to 32 conditions per place. [2023-09-01 11:00:48,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 213 transitions, 470 flow [2023-09-01 11:00:48,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 213 transitions, 470 flow [2023-09-01 11:00:48,056 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:48,056 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 213 transitions, 470 flow [2023-09-01 11:00:48,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 213 transitions, 470 flow [2023-09-01 11:00:48,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 213 transitions, 470 flow [2023-09-01 11:00:48,131 INFO L130 PetriNetUnfolder]: 81/551 cut-off events. [2023-09-01 11:00:48,131 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:00:48,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 551 events. 81/551 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2139 event pairs, 6 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 383. Up to 32 conditions per place. [2023-09-01 11:00:48,153 INFO L119 LiptonReduction]: Number of co-enabled transitions 24960 [2023-09-01 11:00:50,780 INFO L134 LiptonReduction]: Checked pairs total: 57752 [2023-09-01 11:00:50,781 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-09-01 11:00:50,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:50,783 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:50,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:50,793 INFO L130 PetriNetUnfolder]: 29/130 cut-off events. [2023-09-01 11:00:50,794 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 11:00:50,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:50,794 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 11:00:50,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:50,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1110331721, now seen corresponding path program 1 times [2023-09-01 11:00:50,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:50,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634624334] [2023-09-01 11:00:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:50,844 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:50,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:50,881 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:50,882 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:50,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 11:00:50,882 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:50,883 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:50,883 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:50,883 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 11:00:50,913 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 11:00:50,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 247 transitions, 554 flow [2023-09-01 11:00:51,044 INFO L130 PetriNetUnfolder]: 140/871 cut-off events. [2023-09-01 11:00:51,044 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:00:51,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 871 events. 140/871 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3823 event pairs, 23 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 596. Up to 80 conditions per place. [2023-09-01 11:00:51,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 247 transitions, 554 flow [2023-09-01 11:00:51,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 247 transitions, 554 flow [2023-09-01 11:00:51,061 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:51,062 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 247 transitions, 554 flow [2023-09-01 11:00:51,062 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 247 transitions, 554 flow [2023-09-01 11:00:51,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 247 transitions, 554 flow [2023-09-01 11:00:51,169 INFO L130 PetriNetUnfolder]: 140/871 cut-off events. [2023-09-01 11:00:51,169 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:00:51,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 871 events. 140/871 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3823 event pairs, 23 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 596. Up to 80 conditions per place. [2023-09-01 11:00:51,210 INFO L119 LiptonReduction]: Number of co-enabled transitions 36800 [2023-09-01 11:00:54,086 INFO L134 LiptonReduction]: Checked pairs total: 100978 [2023-09-01 11:00:54,086 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-09-01 11:00:54,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:54,094 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:54,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:54,111 INFO L130 PetriNetUnfolder]: 41/180 cut-off events. [2023-09-01 11:00:54,111 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 11:00:54,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:54,112 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:00:54,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:54,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:54,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1587552126, now seen corresponding path program 1 times [2023-09-01 11:00:54,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:54,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419375618] [2023-09-01 11:00:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:54,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:54,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:54,203 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:54,203 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:54,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 11:00:54,204 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:54,204 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:54,205 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:54,205 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 11:00:54,236 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 11:00:54,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 281 transitions, 640 flow [2023-09-01 11:00:54,460 INFO L130 PetriNetUnfolder]: 263/1463 cut-off events. [2023-09-01 11:00:54,461 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:00:54,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 1463 events. 263/1463 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7917 event pairs, 72 based on Foata normal form. 0/1257 useless extension candidates. Maximal degree in co-relation 970. Up to 192 conditions per place. [2023-09-01 11:00:54,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 281 transitions, 640 flow [2023-09-01 11:00:54,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 281 transitions, 640 flow [2023-09-01 11:00:54,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:54,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 281 transitions, 640 flow [2023-09-01 11:00:54,499 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 281 transitions, 640 flow [2023-09-01 11:00:54,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 281 transitions, 640 flow [2023-09-01 11:00:54,711 INFO L130 PetriNetUnfolder]: 263/1463 cut-off events. [2023-09-01 11:00:54,711 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:00:54,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 1463 events. 263/1463 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7917 event pairs, 72 based on Foata normal form. 0/1257 useless extension candidates. Maximal degree in co-relation 970. Up to 192 conditions per place. [2023-09-01 11:00:54,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 50880 [2023-09-01 11:00:57,747 INFO L134 LiptonReduction]: Checked pairs total: 126182 [2023-09-01 11:00:57,748 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-09-01 11:00:57,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:57,750 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:57,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:57,768 INFO L130 PetriNetUnfolder]: 56/239 cut-off events. [2023-09-01 11:00:57,768 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 11:00:57,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:57,768 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:00:57,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:57,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:57,769 INFO L85 PathProgramCache]: Analyzing trace with hash 954848639, now seen corresponding path program 1 times [2023-09-01 11:00:57,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:57,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207672004] [2023-09-01 11:00:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:57,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:57,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:57,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:57,811 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:57,811 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:57,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:00:57,811 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:57,812 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:57,812 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:57,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 11:00:57,841 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 11:00:57,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 315 transitions, 728 flow [2023-09-01 11:00:58,318 INFO L130 PetriNetUnfolder]: 530/2615 cut-off events. [2023-09-01 11:00:58,318 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:00:58,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 2615 events. 530/2615 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17097 event pairs, 201 based on Foata normal form. 0/2269 useless extension candidates. Maximal degree in co-relation 1681. Up to 448 conditions per place. [2023-09-01 11:00:58,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 315 transitions, 728 flow [2023-09-01 11:00:58,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 315 transitions, 728 flow [2023-09-01 11:00:58,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:58,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 315 transitions, 728 flow [2023-09-01 11:00:58,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 315 transitions, 728 flow [2023-09-01 11:00:58,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 315 transitions, 728 flow [2023-09-01 11:00:58,842 INFO L130 PetriNetUnfolder]: 530/2615 cut-off events. [2023-09-01 11:00:58,843 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:00:58,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 2615 events. 530/2615 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17097 event pairs, 201 based on Foata normal form. 0/2269 useless extension candidates. Maximal degree in co-relation 1681. Up to 448 conditions per place. [2023-09-01 11:00:59,037 INFO L119 LiptonReduction]: Number of co-enabled transitions 67200 [2023-09-01 11:01:02,084 INFO L134 LiptonReduction]: Checked pairs total: 169059 [2023-09-01 11:01:02,084 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-09-01 11:01:02,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:02,085 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:02,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:02,106 INFO L130 PetriNetUnfolder]: 76/316 cut-off events. [2023-09-01 11:01:02,106 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 11:01:02,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:02,107 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:02,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:02,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1488401445, now seen corresponding path program 1 times [2023-09-01 11:01:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005134956] [2023-09-01 11:01:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:02,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:02,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:02,150 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:02,150 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:02,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 11:01:02,150 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:02,151 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:02,151 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:02,151 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 11:01:02,175 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 11:01:02,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 349 transitions, 818 flow [2023-09-01 11:01:03,044 INFO L130 PetriNetUnfolder]: 1117/4919 cut-off events. [2023-09-01 11:01:03,045 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:01:03,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 4919 events. 1117/4919 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38083 event pairs, 522 based on Foata normal form. 0/4305 useless extension candidates. Maximal degree in co-relation 3097. Up to 1024 conditions per place. [2023-09-01 11:01:03,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 349 transitions, 818 flow [2023-09-01 11:01:03,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 305 places, 349 transitions, 818 flow [2023-09-01 11:01:03,157 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:03,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 305 places, 349 transitions, 818 flow [2023-09-01 11:01:03,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 305 places, 349 transitions, 818 flow [2023-09-01 11:01:03,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 349 transitions, 818 flow [2023-09-01 11:01:04,249 INFO L130 PetriNetUnfolder]: 1117/4919 cut-off events. [2023-09-01 11:01:04,249 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:01:04,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 4919 events. 1117/4919 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38083 event pairs, 522 based on Foata normal form. 0/4305 useless extension candidates. Maximal degree in co-relation 3097. Up to 1024 conditions per place. [2023-09-01 11:01:04,456 INFO L119 LiptonReduction]: Number of co-enabled transitions 85760 [2023-09-01 11:01:07,736 INFO L134 LiptonReduction]: Checked pairs total: 247577 [2023-09-01 11:01:07,736 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-09-01 11:01:07,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:07,740 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:07,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:07,777 INFO L130 PetriNetUnfolder]: 105/421 cut-off events. [2023-09-01 11:01:07,777 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 11:01:07,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:07,777 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:07,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:07,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:07,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1877709204, now seen corresponding path program 1 times [2023-09-01 11:01:07,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:07,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050836748] [2023-09-01 11:01:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:07,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:07,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:07,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:07,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:07,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:07,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 11:01:07,830 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:07,830 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:07,830 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:07,830 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 11:01:07,867 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 11:01:07,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 383 transitions, 910 flow [2023-09-01 11:01:09,738 INFO L130 PetriNetUnfolder]: 2408/9591 cut-off events. [2023-09-01 11:01:09,738 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:01:09,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11968 conditions, 9591 events. 2408/9591 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86226 event pairs, 1291 based on Foata normal form. 0/8453 useless extension candidates. Maximal degree in co-relation 5986. Up to 2304 conditions per place. [2023-09-01 11:01:09,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 383 transitions, 910 flow [2023-09-01 11:01:10,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 383 transitions, 910 flow [2023-09-01 11:01:10,067 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:10,067 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 383 transitions, 910 flow [2023-09-01 11:01:10,068 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 383 transitions, 910 flow [2023-09-01 11:01:10,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 383 transitions, 910 flow [2023-09-01 11:01:11,864 INFO L130 PetriNetUnfolder]: 2408/9591 cut-off events. [2023-09-01 11:01:11,865 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:01:11,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11968 conditions, 9591 events. 2408/9591 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86226 event pairs, 1291 based on Foata normal form. 0/8453 useless extension candidates. Maximal degree in co-relation 5986. Up to 2304 conditions per place. [2023-09-01 11:01:12,334 INFO L119 LiptonReduction]: Number of co-enabled transitions 106560 [2023-09-01 11:01:15,632 INFO L134 LiptonReduction]: Checked pairs total: 275289 [2023-09-01 11:01:15,633 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-09-01 11:01:15,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:15,635 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:15,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:15,683 INFO L130 PetriNetUnfolder]: 150/572 cut-off events. [2023-09-01 11:01:15,684 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 11:01:15,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:15,684 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:15,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:15,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:15,685 INFO L85 PathProgramCache]: Analyzing trace with hash -886619353, now seen corresponding path program 1 times [2023-09-01 11:01:15,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:15,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721189863] [2023-09-01 11:01:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:15,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:15,727 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:15,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:15,758 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:15,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:15,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 11:01:15,759 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:15,762 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:15,762 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:15,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 11:01:15,792 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 11:01:15,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 417 transitions, 1004 flow [2023-09-01 11:01:20,199 INFO L130 PetriNetUnfolder]: 5235/19127 cut-off events. [2023-09-01 11:01:20,199 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:01:20,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24333 conditions, 19127 events. 5235/19127 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 194637 event pairs, 3084 based on Foata normal form. 0/16953 useless extension candidates. Maximal degree in co-relation 11948. Up to 5120 conditions per place. [2023-09-01 11:01:20,510 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 417 transitions, 1004 flow [2023-09-01 11:01:20,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 417 transitions, 1004 flow [2023-09-01 11:01:20,708 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:20,708 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 363 places, 417 transitions, 1004 flow [2023-09-01 11:01:20,708 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 363 places, 417 transitions, 1004 flow [2023-09-01 11:01:20,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 417 transitions, 1004 flow [2023-09-01 11:01:24,720 INFO L130 PetriNetUnfolder]: 5235/19127 cut-off events. [2023-09-01 11:01:24,720 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:01:25,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24333 conditions, 19127 events. 5235/19127 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 194637 event pairs, 3084 based on Foata normal form. 0/16953 useless extension candidates. Maximal degree in co-relation 11948. Up to 5120 conditions per place. [2023-09-01 11:01:25,866 INFO L119 LiptonReduction]: Number of co-enabled transitions 129600 [2023-09-01 11:01:29,281 INFO L134 LiptonReduction]: Checked pairs total: 338378 [2023-09-01 11:01:29,282 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-09-01 11:01:29,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:29,284 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:29,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:29,367 INFO L130 PetriNetUnfolder]: 224/798 cut-off events. [2023-09-01 11:01:29,367 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 11:01:29,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:29,367 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:29,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:29,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1629592195, now seen corresponding path program 1 times [2023-09-01 11:01:29,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:29,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20770625] [2023-09-01 11:01:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:29,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:29,390 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:29,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:29,411 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:29,411 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:29,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 11:01:29,411 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:29,412 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:29,412 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:29,412 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 11:01:29,448 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 11:01:29,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 451 transitions, 1100 flow [2023-09-01 11:01:38,534 INFO L130 PetriNetUnfolder]: 11390/38647 cut-off events. [2023-09-01 11:01:38,534 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:01:39,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50011 conditions, 38647 events. 11390/38647 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 440858 event pairs, 7181 based on Foata normal form. 0/34413 useless extension candidates. Maximal degree in co-relation 24311. Up to 11264 conditions per place. [2023-09-01 11:01:39,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 451 transitions, 1100 flow [2023-09-01 11:01:40,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 392 places, 451 transitions, 1100 flow [2023-09-01 11:01:40,127 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:40,127 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 392 places, 451 transitions, 1100 flow [2023-09-01 11:01:40,127 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 392 places, 451 transitions, 1100 flow [2023-09-01 11:01:40,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 451 transitions, 1100 flow [2023-09-01 11:01:48,997 INFO L130 PetriNetUnfolder]: 11390/38647 cut-off events. [2023-09-01 11:01:48,997 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:01:50,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50011 conditions, 38647 events. 11390/38647 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 440858 event pairs, 7181 based on Foata normal form. 0/34413 useless extension candidates. Maximal degree in co-relation 24311. Up to 11264 conditions per place. [2023-09-01 11:01:52,296 INFO L119 LiptonReduction]: Number of co-enabled transitions 154880 [2023-09-01 11:01:56,047 INFO L134 LiptonReduction]: Checked pairs total: 455145 [2023-09-01 11:01:56,047 INFO L136 LiptonReduction]: Total number of compositions: 288 [2023-09-01 11:01:56,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:56,049 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:56,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:56,161 INFO L130 PetriNetUnfolder]: 349/1145 cut-off events. [2023-09-01 11:01:56,161 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 11:01:56,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:56,162 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:56,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:56,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1852692156, now seen corresponding path program 1 times [2023-09-01 11:01:56,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:56,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272269107] [2023-09-01 11:01:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:56,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:56,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:56,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:56,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:56,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:56,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 11:01:56,207 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:56,207 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:56,207 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:56,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 11:01:56,239 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 11:01:56,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 485 transitions, 1198 flow [2023-09-01 11:02:16,225 INFO L130 PetriNetUnfolder]: 24713/78647 cut-off events. [2023-09-01 11:02:16,225 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:02:20,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103338 conditions, 78647 events. 24713/78647 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 978059 event pairs, 16398 based on Foata normal form. 0/70305 useless extension candidates. Maximal degree in co-relation 49987. Up to 24576 conditions per place. [2023-09-01 11:02:20,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 485 transitions, 1198 flow [2023-09-01 11:02:21,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 421 places, 485 transitions, 1198 flow [2023-09-01 11:02:21,874 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:02:21,874 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 421 places, 485 transitions, 1198 flow [2023-09-01 11:02:21,874 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 421 places, 485 transitions, 1198 flow [2023-09-01 11:02:21,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 485 transitions, 1198 flow [2023-09-01 11:02:44,339 INFO L130 PetriNetUnfolder]: 24713/78647 cut-off events. [2023-09-01 11:02:44,339 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:02:48,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103338 conditions, 78647 events. 24713/78647 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 978059 event pairs, 16398 based on Foata normal form. 0/70305 useless extension candidates. Maximal degree in co-relation 49987. Up to 24576 conditions per place. [2023-09-01 11:02:54,316 INFO L119 LiptonReduction]: Number of co-enabled transitions 182400 [2023-09-01 11:02:58,057 INFO L134 LiptonReduction]: Checked pairs total: 538992 [2023-09-01 11:02:58,057 INFO L136 LiptonReduction]: Total number of compositions: 305 [2023-09-01 11:02:58,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:02:58,058 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:02:58,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:02:58,241 INFO L130 PetriNetUnfolder]: 560/1685 cut-off events. [2023-09-01 11:02:58,241 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 11:02:58,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:02:58,242 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 11:02:58,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:02:58,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:02:58,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1360734926, now seen corresponding path program 1 times [2023-09-01 11:02:58,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:02:58,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845836771] [2023-09-01 11:02:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:02:58,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:02:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:58,272 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:02:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:58,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:02:58,299 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:02:58,299 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:02:58,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 11:02:58,300 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:02:58,302 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:02:58,302 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:02:58,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 11:02:58,343 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 11:02:58,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 450 places, 519 transitions, 1298 flow [2023-09-01 11:03:44,429 INFO L130 PetriNetUnfolder]: 53396/160631 cut-off events. [2023-09-01 11:03:44,430 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:03:56,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214010 conditions, 160631 events. 53396/160631 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2792. Compared 2162727 event pairs, 36879 based on Foata normal form. 0/144085 useless extension candidates. Maximal degree in co-relation 103312. Up to 53248 conditions per place. [2023-09-01 11:03:56,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 450 places, 519 transitions, 1298 flow [2023-09-01 11:04:00,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 450 places, 519 transitions, 1298 flow [2023-09-01 11:04:00,986 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:00,986 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 450 places, 519 transitions, 1298 flow [2023-09-01 11:04:00,987 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 450 places, 519 transitions, 1298 flow [2023-09-01 11:04:00,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 450 places, 519 transitions, 1298 flow [2023-09-01 11:04:49,468 INFO L130 PetriNetUnfolder]: 53396/160631 cut-off events. [2023-09-01 11:04:49,469 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:04:59,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214010 conditions, 160631 events. 53396/160631 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2792. Compared 2162727 event pairs, 36879 based on Foata normal form. 0/144085 useless extension candidates. Maximal degree in co-relation 103312. Up to 53248 conditions per place. [2023-09-01 11:05:17,115 INFO L119 LiptonReduction]: Number of co-enabled transitions 212160 [2023-09-01 11:05:20,970 INFO L134 LiptonReduction]: Checked pairs total: 547149 [2023-09-01 11:05:20,970 INFO L136 LiptonReduction]: Total number of compositions: 320 [2023-09-01 11:05:20,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:05:20,972 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;@7f077e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:05:20,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:05:21,220 INFO L130 PetriNetUnfolder]: 913/2530 cut-off events. [2023-09-01 11:05:21,221 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 11:05:21,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:05:21,221 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 11:05:21,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:05:21,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:05:21,221 INFO L85 PathProgramCache]: Analyzing trace with hash -342912954, now seen corresponding path program 1 times [2023-09-01 11:05:21,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:05:21,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321321408] [2023-09-01 11:05:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:05:21,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:05:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:21,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:05:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:21,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:05:21,281 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:05:21,281 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:05:21,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 11:05:21,282 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:05:21,282 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:05:21,282 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:05:21,282 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 11:05:21,335 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 11:05:21,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 479 places, 553 transitions, 1400 flow