./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.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_01-simple_racing.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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 10:43:57,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:43:57,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:43:57,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:43:57,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:43:57,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:43:57,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:43:57,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:43:57,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:43:57,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:43:57,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:43:57,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:43:57,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:43:57,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:43:57,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:43:57,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:43:57,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:43:57,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:43:57,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:43:57,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:43:57,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:43:57,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:43:57,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:43:57,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:43:57,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:43:57,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:43:57,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:43:57,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:43:57,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:43:57,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:43:57,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:43:57,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:43:57,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:43:57,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:43:57,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:43:57,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:43:57,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:43:57,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:43:57,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:43:57,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:43:57,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:43:57,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:43:58,024 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:43:58,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:43:58,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:43:58,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:43:58,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:43:58,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:43:58,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:43:58,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:43:58,028 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:43:58,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:43:58,029 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:43:58,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:43:58,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:43:58,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:43:58,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:43:58,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:43:58,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:43:58,030 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:43:58,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:43:58,031 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:43:58,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:43:58,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:43:58,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:43:58,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:43:58,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:43:58,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:43:58,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:43:58,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:43:58,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:43:58,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:43:58,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:43:58,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:43:58,033 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:43:58,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:43:58,034 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:43:58,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:43:58,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:43:58,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:43:58,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:43:58,361 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:43:58,361 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:43:58,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-09-01 10:43:59,518 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:43:59,820 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:43:59,824 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-09-01 10:43:59,847 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c3080d6/4e4484b538ea4f5ea6dd4f558710812f/FLAG9b2c7f23c [2023-09-01 10:43:59,863 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c3080d6/4e4484b538ea4f5ea6dd4f558710812f [2023-09-01 10:43:59,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:43:59,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:43:59,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:43:59,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:43:59,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:43:59,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:43:59" (1/1) ... [2023-09-01 10:43:59,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799fada2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:59, skipping insertion in model container [2023-09-01 10:43:59,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:43:59" (1/1) ... [2023-09-01 10:43:59,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:43:59,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:44:00,134 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_01-simple_racing.i[30176,30189] [2023-09-01 10:44:00,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:44:00,168 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:44:00,214 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_01-simple_racing.i[30176,30189] [2023-09-01 10:44:00,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:44:00,273 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:44:00,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00 WrapperNode [2023-09-01 10:44:00,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:44:00,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:44:00,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:44:00,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:44:00,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,383 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-09-01 10:44:00,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:44:00,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:44:00,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:44:00,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:44:00,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,425 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:44:00,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:44:00,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:44:00,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:44:00,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (1/1) ... [2023-09-01 10:44:00,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:44:00,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:44:00,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 10:44:00,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 10:44:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:44:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:44:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:44:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:44:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:44:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:44:00,505 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:44:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:44:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:44:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:44:00,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:44:00,507 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:44:00,651 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:44:00,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:44:00,815 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:44:00,821 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:44:00,822 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 10:44:00,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:44:00 BoogieIcfgContainer [2023-09-01 10:44:00,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:44:00,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:44:00,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:44:00,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:44:00,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:43:59" (1/3) ... [2023-09-01 10:44:00,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd2324a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:44:00, skipping insertion in model container [2023-09-01 10:44:00,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:00" (2/3) ... [2023-09-01 10:44:00,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd2324a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:44:00, skipping insertion in model container [2023-09-01 10:44:00,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:44:00" (3/3) ... [2023-09-01 10:44:00,831 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-09-01 10:44:00,838 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:44:00,846 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:44:00,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:44:00,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:44:00,925 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:44:00,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 106 transitions, 220 flow [2023-09-01 10:44:01,056 INFO L130 PetriNetUnfolder]: 17/139 cut-off events. [2023-09-01 10:44:01,056 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:44:01,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 139 events. 17/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 298 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-09-01 10:44:01,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 106 transitions, 220 flow [2023-09-01 10:44:01,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 101 transitions, 207 flow [2023-09-01 10:44:01,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:01,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 101 transitions, 207 flow [2023-09-01 10:44:01,089 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 101 transitions, 207 flow [2023-09-01 10:44:01,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 101 transitions, 207 flow [2023-09-01 10:44:01,128 INFO L130 PetriNetUnfolder]: 16/134 cut-off events. [2023-09-01 10:44:01,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:44:01,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 134 events. 16/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-09-01 10:44:01,134 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-09-01 10:44:04,064 INFO L134 LiptonReduction]: Checked pairs total: 3727 [2023-09-01 10:44:04,064 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-09-01 10:44:04,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:04,082 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:04,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:04,089 INFO L130 PetriNetUnfolder]: 3/25 cut-off events. [2023-09-01 10:44:04,089 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:44:04,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:04,090 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:44:04,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:04,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:04,095 INFO L85 PathProgramCache]: Analyzing trace with hash -923603211, now seen corresponding path program 1 times [2023-09-01 10:44:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:04,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936560858] [2023-09-01 10:44:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:04,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:04,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:04,316 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:04,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:04,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:44:04,320 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:04,326 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:04,327 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:04,327 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:44:04,353 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:44:04,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 136 transitions, 290 flow [2023-09-01 10:44:04,411 INFO L130 PetriNetUnfolder]: 31/226 cut-off events. [2023-09-01 10:44:04,411 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:44:04,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 226 events. 31/226 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 141. Up to 8 conditions per place. [2023-09-01 10:44:04,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 136 transitions, 290 flow [2023-09-01 10:44:04,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 136 transitions, 290 flow [2023-09-01 10:44:04,418 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:04,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 136 transitions, 290 flow [2023-09-01 10:44:04,418 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 136 transitions, 290 flow [2023-09-01 10:44:04,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 136 transitions, 290 flow [2023-09-01 10:44:04,446 INFO L130 PetriNetUnfolder]: 31/226 cut-off events. [2023-09-01 10:44:04,447 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:44:04,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 226 events. 31/226 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 141. Up to 8 conditions per place. [2023-09-01 10:44:04,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-09-01 10:44:07,172 INFO L134 LiptonReduction]: Checked pairs total: 17341 [2023-09-01 10:44:07,172 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-09-01 10:44:07,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:07,178 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:07,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:07,188 INFO L130 PetriNetUnfolder]: 12/60 cut-off events. [2023-09-01 10:44:07,189 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:44:07,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:07,190 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:44:07,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:07,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:07,191 INFO L85 PathProgramCache]: Analyzing trace with hash 358027829, now seen corresponding path program 1 times [2023-09-01 10:44:07,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:07,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309449519] [2023-09-01 10:44:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:07,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:07,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:07,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:07,285 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:07,286 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:07,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:44:07,287 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:07,289 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:07,289 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:07,290 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:44:07,318 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:44:07,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 166 transitions, 362 flow [2023-09-01 10:44:07,381 INFO L130 PetriNetUnfolder]: 50/344 cut-off events. [2023-09-01 10:44:07,381 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:44:07,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 344 events. 50/344 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1037 event pairs, 1 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 234. Up to 16 conditions per place. [2023-09-01 10:44:07,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 166 transitions, 362 flow [2023-09-01 10:44:07,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 166 transitions, 362 flow [2023-09-01 10:44:07,391 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:07,391 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 166 transitions, 362 flow [2023-09-01 10:44:07,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 166 transitions, 362 flow [2023-09-01 10:44:07,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 166 transitions, 362 flow [2023-09-01 10:44:07,425 INFO L130 PetriNetUnfolder]: 50/344 cut-off events. [2023-09-01 10:44:07,425 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:44:07,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 344 events. 50/344 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1037 event pairs, 1 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 234. Up to 16 conditions per place. [2023-09-01 10:44:07,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 12432 [2023-09-01 10:44:09,831 INFO L134 LiptonReduction]: Checked pairs total: 32834 [2023-09-01 10:44:09,832 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-09-01 10:44:09,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:09,835 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:09,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:09,842 INFO L130 PetriNetUnfolder]: 19/91 cut-off events. [2023-09-01 10:44:09,842 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:44:09,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:09,842 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:44:09,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:09,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:09,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1122503872, now seen corresponding path program 1 times [2023-09-01 10:44:09,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:09,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617329873] [2023-09-01 10:44:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:09,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:09,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:09,910 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:09,910 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:09,910 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:09,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:44:09,910 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:09,911 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:09,911 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:09,911 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:44:09,935 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:44:09,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 196 transitions, 436 flow [2023-09-01 10:44:10,009 INFO L130 PetriNetUnfolder]: 81/526 cut-off events. [2023-09-01 10:44:10,010 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:44:10,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 526 events. 81/526 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1911 event pairs, 6 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 364. Up to 32 conditions per place. [2023-09-01 10:44:10,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 196 transitions, 436 flow [2023-09-01 10:44:10,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 196 transitions, 436 flow [2023-09-01 10:44:10,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:10,020 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 196 transitions, 436 flow [2023-09-01 10:44:10,021 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 196 transitions, 436 flow [2023-09-01 10:44:10,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 196 transitions, 436 flow [2023-09-01 10:44:10,080 INFO L130 PetriNetUnfolder]: 81/526 cut-off events. [2023-09-01 10:44:10,081 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:44:10,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 526 events. 81/526 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1911 event pairs, 6 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 364. Up to 32 conditions per place. [2023-09-01 10:44:10,102 INFO L119 LiptonReduction]: Number of co-enabled transitions 20048 [2023-09-01 10:44:12,696 INFO L134 LiptonReduction]: Checked pairs total: 56129 [2023-09-01 10:44:12,696 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-09-01 10:44:12,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:12,699 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:12,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:12,708 INFO L130 PetriNetUnfolder]: 33/138 cut-off events. [2023-09-01 10:44:12,709 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:44:12,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:12,709 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:12,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:12,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:12,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1464503797, now seen corresponding path program 1 times [2023-09-01 10:44:12,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:12,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131103799] [2023-09-01 10:44:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:12,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:12,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:12,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:12,760 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:12,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:12,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:44:12,761 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:12,761 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:12,761 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:12,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:44:12,780 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:44:12,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 226 transitions, 512 flow [2023-09-01 10:44:12,895 INFO L130 PetriNetUnfolder]: 140/840 cut-off events. [2023-09-01 10:44:12,895 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:44:12,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 840 events. 140/840 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3585 event pairs, 23 based on Foata normal form. 0/710 useless extension candidates. Maximal degree in co-relation 571. Up to 80 conditions per place. [2023-09-01 10:44:12,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 226 transitions, 512 flow [2023-09-01 10:44:12,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 226 transitions, 512 flow [2023-09-01 10:44:12,909 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:12,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 226 transitions, 512 flow [2023-09-01 10:44:12,910 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 226 transitions, 512 flow [2023-09-01 10:44:12,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 226 transitions, 512 flow [2023-09-01 10:44:13,015 INFO L130 PetriNetUnfolder]: 140/840 cut-off events. [2023-09-01 10:44:13,015 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:44:13,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 840 events. 140/840 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3585 event pairs, 23 based on Foata normal form. 0/710 useless extension candidates. Maximal degree in co-relation 571. Up to 80 conditions per place. [2023-09-01 10:44:13,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 29400 [2023-09-01 10:44:15,670 INFO L134 LiptonReduction]: Checked pairs total: 83915 [2023-09-01 10:44:15,670 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-09-01 10:44:15,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:15,673 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:15,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:15,686 INFO L130 PetriNetUnfolder]: 41/178 cut-off events. [2023-09-01 10:44:15,686 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:44:15,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:15,687 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:15,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:15,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:15,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1210261088, now seen corresponding path program 1 times [2023-09-01 10:44:15,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:15,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362099011] [2023-09-01 10:44:15,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:15,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:15,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:15,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:15,758 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:15,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:15,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:44:15,758 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:15,759 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:15,762 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:15,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:44:15,790 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:44:15,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 256 transitions, 590 flow [2023-09-01 10:44:16,001 INFO L130 PetriNetUnfolder]: 263/1426 cut-off events. [2023-09-01 10:44:16,002 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:44:16,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 1426 events. 263/1426 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7628 event pairs, 72 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 939. Up to 192 conditions per place. [2023-09-01 10:44:16,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 256 transitions, 590 flow [2023-09-01 10:44:16,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 256 transitions, 590 flow [2023-09-01 10:44:16,033 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:16,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 256 transitions, 590 flow [2023-09-01 10:44:16,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 256 transitions, 590 flow [2023-09-01 10:44:16,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 256 transitions, 590 flow [2023-09-01 10:44:16,228 INFO L130 PetriNetUnfolder]: 263/1426 cut-off events. [2023-09-01 10:44:16,228 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:44:16,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 1426 events. 263/1426 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7628 event pairs, 72 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 939. Up to 192 conditions per place. [2023-09-01 10:44:16,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 40488 [2023-09-01 10:44:19,056 INFO L134 LiptonReduction]: Checked pairs total: 116062 [2023-09-01 10:44:19,057 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-09-01 10:44:19,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:19,059 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:19,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:19,077 INFO L130 PetriNetUnfolder]: 56/237 cut-off events. [2023-09-01 10:44:19,077 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:44:19,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:19,077 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:19,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:19,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1894809051, now seen corresponding path program 1 times [2023-09-01 10:44:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:19,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475332338] [2023-09-01 10:44:19,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:19,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:19,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:19,115 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:19,115 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:19,116 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:19,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:44:19,116 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:19,117 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:19,117 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:19,117 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:44:19,146 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:44:19,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 286 transitions, 670 flow [2023-09-01 10:44:19,593 INFO L130 PetriNetUnfolder]: 530/2572 cut-off events. [2023-09-01 10:44:19,594 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:44:19,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 2572 events. 530/2572 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16778 event pairs, 201 based on Foata normal form. 0/2226 useless extension candidates. Maximal degree in co-relation 1644. Up to 448 conditions per place. [2023-09-01 10:44:19,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 286 transitions, 670 flow [2023-09-01 10:44:19,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 286 transitions, 670 flow [2023-09-01 10:44:19,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:19,648 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 286 transitions, 670 flow [2023-09-01 10:44:19,648 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 286 transitions, 670 flow [2023-09-01 10:44:19,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 286 transitions, 670 flow [2023-09-01 10:44:20,135 INFO L130 PetriNetUnfolder]: 530/2572 cut-off events. [2023-09-01 10:44:20,136 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:44:20,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 2572 events. 530/2572 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16778 event pairs, 201 based on Foata normal form. 0/2226 useless extension candidates. Maximal degree in co-relation 1644. Up to 448 conditions per place. [2023-09-01 10:44:20,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 53312 [2023-09-01 10:44:23,263 INFO L134 LiptonReduction]: Checked pairs total: 155430 [2023-09-01 10:44:23,264 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-09-01 10:44:23,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:23,265 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:23,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:23,293 INFO L130 PetriNetUnfolder]: 83/330 cut-off events. [2023-09-01 10:44:23,293 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:44:23,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:23,293 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:23,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:23,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1073729781, now seen corresponding path program 1 times [2023-09-01 10:44:23,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:23,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231719583] [2023-09-01 10:44:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:23,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:23,316 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:23,334 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:23,334 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:23,334 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:23,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:44:23,334 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:23,335 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:23,335 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:23,335 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:44:23,363 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:44:23,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 316 transitions, 752 flow [2023-09-01 10:44:24,403 INFO L130 PetriNetUnfolder]: 1117/4870 cut-off events. [2023-09-01 10:44:24,403 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:44:24,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5955 conditions, 4870 events. 1117/4870 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38527 event pairs, 522 based on Foata normal form. 0/4256 useless extension candidates. Maximal degree in co-relation 3054. Up to 1024 conditions per place. [2023-09-01 10:44:24,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 316 transitions, 752 flow [2023-09-01 10:44:24,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 316 transitions, 752 flow [2023-09-01 10:44:24,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:24,527 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 316 transitions, 752 flow [2023-09-01 10:44:24,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 316 transitions, 752 flow [2023-09-01 10:44:24,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 316 transitions, 752 flow [2023-09-01 10:44:25,581 INFO L130 PetriNetUnfolder]: 1117/4870 cut-off events. [2023-09-01 10:44:25,582 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:44:25,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5955 conditions, 4870 events. 1117/4870 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38527 event pairs, 522 based on Foata normal form. 0/4256 useless extension candidates. Maximal degree in co-relation 3054. Up to 1024 conditions per place. [2023-09-01 10:44:25,803 INFO L119 LiptonReduction]: Number of co-enabled transitions 67872 [2023-09-01 10:44:28,816 INFO L134 LiptonReduction]: Checked pairs total: 224972 [2023-09-01 10:44:28,816 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-09-01 10:44:28,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:28,818 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:28,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:28,863 INFO L130 PetriNetUnfolder]: 105/421 cut-off events. [2023-09-01 10:44:28,864 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:44:28,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:28,864 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:28,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:28,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:28,865 INFO L85 PathProgramCache]: Analyzing trace with hash 661566965, now seen corresponding path program 1 times [2023-09-01 10:44:28,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:28,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483858953] [2023-09-01 10:44:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:28,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:28,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:28,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:28,933 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:28,933 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:28,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:44:28,934 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:28,936 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:28,936 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:28,936 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:44:28,968 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:44:28,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 346 transitions, 836 flow [2023-09-01 10:44:30,864 INFO L130 PetriNetUnfolder]: 2408/9536 cut-off events. [2023-09-01 10:44:30,865 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:44:31,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 9536 events. 2408/9536 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86182 event pairs, 1291 based on Foata normal form. 0/8398 useless extension candidates. Maximal degree in co-relation 5937. Up to 2304 conditions per place. [2023-09-01 10:44:31,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 346 transitions, 836 flow [2023-09-01 10:44:31,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 346 transitions, 836 flow [2023-09-01 10:44:31,110 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:31,111 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 346 transitions, 836 flow [2023-09-01 10:44:31,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 346 transitions, 836 flow [2023-09-01 10:44:31,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 346 transitions, 836 flow [2023-09-01 10:44:32,743 INFO L130 PetriNetUnfolder]: 2408/9536 cut-off events. [2023-09-01 10:44:32,743 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:44:32,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 9536 events. 2408/9536 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86182 event pairs, 1291 based on Foata normal form. 0/8398 useless extension candidates. Maximal degree in co-relation 5937. Up to 2304 conditions per place. [2023-09-01 10:44:33,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 84168 [2023-09-01 10:44:36,182 INFO L134 LiptonReduction]: Checked pairs total: 251928 [2023-09-01 10:44:36,182 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-09-01 10:44:36,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:36,184 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:36,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:36,224 INFO L130 PetriNetUnfolder]: 159/588 cut-off events. [2023-09-01 10:44:36,224 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:44:36,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:36,225 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:36,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:36,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:36,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1173330805, now seen corresponding path program 1 times [2023-09-01 10:44:36,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:36,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53240416] [2023-09-01 10:44:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:36,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:36,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:36,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:36,260 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:36,260 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:36,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:44:36,261 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:36,261 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:36,261 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:36,262 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:44:36,287 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:44:36,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 376 transitions, 922 flow [2023-09-01 10:44:40,080 INFO L130 PetriNetUnfolder]: 5235/19066 cut-off events. [2023-09-01 10:44:40,080 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:44:40,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24272 conditions, 19066 events. 5235/19066 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 195611 event pairs, 3084 based on Foata normal form. 0/16892 useless extension candidates. Maximal degree in co-relation 11893. Up to 5120 conditions per place. [2023-09-01 10:44:40,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 376 transitions, 922 flow [2023-09-01 10:44:40,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 322 places, 376 transitions, 922 flow [2023-09-01 10:44:40,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:40,527 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 376 transitions, 922 flow [2023-09-01 10:44:40,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 376 transitions, 922 flow [2023-09-01 10:44:40,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 376 transitions, 922 flow [2023-09-01 10:44:44,210 INFO L130 PetriNetUnfolder]: 5235/19066 cut-off events. [2023-09-01 10:44:44,210 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:44:44,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24272 conditions, 19066 events. 5235/19066 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 195611 event pairs, 3084 based on Foata normal form. 0/16892 useless extension candidates. Maximal degree in co-relation 11893. Up to 5120 conditions per place. [2023-09-01 10:44:45,305 INFO L119 LiptonReduction]: Number of co-enabled transitions 102200 [2023-09-01 10:44:48,318 INFO L134 LiptonReduction]: Checked pairs total: 348428 [2023-09-01 10:44:48,318 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-09-01 10:44:48,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:48,320 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:48,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:48,384 INFO L130 PetriNetUnfolder]: 234/816 cut-off events. [2023-09-01 10:44:48,384 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:44:48,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:48,384 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:48,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:48,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2138108507, now seen corresponding path program 1 times [2023-09-01 10:44:48,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:48,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848748211] [2023-09-01 10:44:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:48,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:48,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:48,423 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:48,423 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:48,424 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:48,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:44:48,424 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:48,425 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:48,425 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:48,425 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:44:48,452 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:44:48,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 406 transitions, 1010 flow [2023-09-01 10:44:56,761 INFO L130 PetriNetUnfolder]: 11390/38580 cut-off events. [2023-09-01 10:44:56,761 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:44:57,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49944 conditions, 38580 events. 11390/38580 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 443827 event pairs, 7181 based on Foata normal form. 0/34346 useless extension candidates. Maximal degree in co-relation 24250. Up to 11264 conditions per place. [2023-09-01 10:44:57,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 406 transitions, 1010 flow [2023-09-01 10:44:57,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 406 transitions, 1010 flow [2023-09-01 10:44:57,984 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:57,984 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 406 transitions, 1010 flow [2023-09-01 10:44:57,984 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 406 transitions, 1010 flow [2023-09-01 10:44:57,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 406 transitions, 1010 flow [2023-09-01 10:45:06,497 INFO L130 PetriNetUnfolder]: 11390/38580 cut-off events. [2023-09-01 10:45:06,497 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:45:07,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49944 conditions, 38580 events. 11390/38580 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 443827 event pairs, 7181 based on Foata normal form. 0/34346 useless extension candidates. Maximal degree in co-relation 24250. Up to 11264 conditions per place. [2023-09-01 10:45:09,095 INFO L119 LiptonReduction]: Number of co-enabled transitions 121968 [2023-09-01 10:45:12,387 INFO L134 LiptonReduction]: Checked pairs total: 373212 [2023-09-01 10:45:12,387 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-09-01 10:45:12,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:45:12,388 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:45:12,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:45:12,497 INFO L130 PetriNetUnfolder]: 360/1167 cut-off events. [2023-09-01 10:45:12,498 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:45:12,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:45:12,498 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:45:12,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:45:12,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:45:12,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1088273120, now seen corresponding path program 1 times [2023-09-01 10:45:12,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:45:12,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468969494] [2023-09-01 10:45:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:45:12,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:45:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:45:12,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:45:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:45:12,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:45:12,544 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:45:12,544 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:45:12,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:45:12,545 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:45:12,545 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:45:12,545 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:45:12,545 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:45:12,582 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:45:12,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 436 transitions, 1100 flow [2023-09-01 10:45:30,972 INFO L130 PetriNetUnfolder]: 24713/78574 cut-off events. [2023-09-01 10:45:30,972 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:45:34,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103265 conditions, 78574 events. 24713/78574 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 974954 event pairs, 16398 based on Foata normal form. 0/70232 useless extension candidates. Maximal degree in co-relation 49920. Up to 24576 conditions per place. [2023-09-01 10:45:34,510 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 436 transitions, 1100 flow [2023-09-01 10:45:35,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 372 places, 436 transitions, 1100 flow [2023-09-01 10:45:35,766 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:45:35,766 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 372 places, 436 transitions, 1100 flow [2023-09-01 10:45:35,766 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 372 places, 436 transitions, 1100 flow [2023-09-01 10:45:35,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 436 transitions, 1100 flow [2023-09-01 10:45:54,255 INFO L130 PetriNetUnfolder]: 24713/78574 cut-off events. [2023-09-01 10:45:54,255 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:45:57,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103265 conditions, 78574 events. 24713/78574 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 974954 event pairs, 16398 based on Foata normal form. 0/70232 useless extension candidates. Maximal degree in co-relation 49920. Up to 24576 conditions per place. [2023-09-01 10:46:04,516 INFO L119 LiptonReduction]: Number of co-enabled transitions 143472 [2023-09-01 10:46:08,369 INFO L134 LiptonReduction]: Checked pairs total: 495099 [2023-09-01 10:46:08,369 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-09-01 10:46:08,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:46:08,372 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:46:08,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:46:08,577 INFO L130 PetriNetUnfolder]: 572/1709 cut-off events. [2023-09-01 10:46:08,577 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:46:08,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:46:08,577 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 10:46:08,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:46:08,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:46:08,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1050289239, now seen corresponding path program 1 times [2023-09-01 10:46:08,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:46:08,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341176442] [2023-09-01 10:46:08,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:46:08,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:46:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:46:08,603 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:46:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:46:08,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:46:08,626 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:46:08,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:46:08,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:46:08,627 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:46:08,627 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:46:08,627 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:46:08,627 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:46:08,654 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:46:08,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 466 transitions, 1192 flow [2023-09-01 10:46:50,549 INFO L130 PetriNetUnfolder]: 53396/160552 cut-off events. [2023-09-01 10:46:50,549 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:46:59,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213931 conditions, 160552 events. 53396/160552 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 2176341 event pairs, 36879 based on Foata normal form. 0/144006 useless extension candidates. Maximal degree in co-relation 103239. Up to 53248 conditions per place. [2023-09-01 10:46:59,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 466 transitions, 1192 flow [2023-09-01 10:47:02,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 397 places, 466 transitions, 1192 flow [2023-09-01 10:47:02,957 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:47:02,957 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 397 places, 466 transitions, 1192 flow [2023-09-01 10:47:02,958 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 397 places, 466 transitions, 1192 flow [2023-09-01 10:47:02,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 466 transitions, 1192 flow [2023-09-01 10:47:45,583 INFO L130 PetriNetUnfolder]: 53396/160552 cut-off events. [2023-09-01 10:47:45,583 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:47:54,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213931 conditions, 160552 events. 53396/160552 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 2176341 event pairs, 36879 based on Foata normal form. 0/144006 useless extension candidates. Maximal degree in co-relation 103239. Up to 53248 conditions per place. [2023-09-01 10:48:09,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 166712 [2023-09-01 10:48:13,216 INFO L134 LiptonReduction]: Checked pairs total: 575953 [2023-09-01 10:48:13,217 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-09-01 10:48:13,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:48:13,218 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;@1d11f4c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:48:13,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:48:13,445 INFO L130 PetriNetUnfolder]: 926/2556 cut-off events. [2023-09-01 10:48:13,445 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 10:48:13,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:48:13,445 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 10:48:13,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:48:13,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:48:13,446 INFO L85 PathProgramCache]: Analyzing trace with hash 728207007, now seen corresponding path program 1 times [2023-09-01 10:48:13,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:48:13,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716628376] [2023-09-01 10:48:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:48:13,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:48:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:13,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:48:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:13,495 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:48:13,496 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:48:13,496 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:48:13,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:48:13,496 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:48:13,497 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:48:13,497 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:48:13,497 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:48:13,530 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 10:48:13,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 496 transitions, 1286 flow