./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:28:35,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:28:35,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:28:35,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:28:35,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:28:35,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:28:35,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:28:35,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:28:35,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:28:35,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:28:35,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:28:35,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:28:35,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:28:35,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:28:35,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:28:35,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:28:35,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:28:35,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:28:35,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:28:35,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:28:35,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:28:35,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:28:35,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:28:35,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:28:35,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:28:35,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:28:35,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:28:35,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:28:35,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:28:35,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:28:35,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:28:35,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:28:35,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:28:35,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:28:35,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:28:35,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:28:35,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:28:35,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:28:35,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:28:35,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:28:35,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:28:35,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:28:35,366 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:28:35,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:28:35,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:28:35,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:28:35,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:28:35,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:28:35,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:28:35,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:28:35,370 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:28:35,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:28:35,371 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:28:35,371 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:28:35,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:28:35,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:28:35,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:28:35,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:28:35,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:28:35,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:28:35,373 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:28:35,373 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:28:35,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:28:35,373 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:28:35,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:28:35,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:28:35,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:28:35,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:28:35,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:28:35,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:28:35,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:28:35,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:28:35,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:28:35,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:28:35,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:28:35,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:28:35,376 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:28:35,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:28:35,376 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:28:35,377 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:28:35,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:28:35,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:28:35,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:28:35,694 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:28:35,695 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:28:35,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-09-01 06:28:36,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:28:37,243 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:28:37,244 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-09-01 06:28:37,256 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78487746d/dd03e08a620544a8b36af068626efc84/FLAG7c55a4618 [2023-09-01 06:28:37,269 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78487746d/dd03e08a620544a8b36af068626efc84 [2023-09-01 06:28:37,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:28:37,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:28:37,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:28:37,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:28:37,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:28:37,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b34da65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37, skipping insertion in model container [2023-09-01 06:28:37,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:28:37,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:28:37,553 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_03-munge_racing.i[30176,30189] [2023-09-01 06:28:37,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:28:37,582 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:28:37,610 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_03-munge_racing.i[30176,30189] [2023-09-01 06:28:37,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:28:37,648 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:28:37,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37 WrapperNode [2023-09-01 06:28:37,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:28:37,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:28:37,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:28:37,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:28:37,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,691 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 217 [2023-09-01 06:28:37,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:28:37,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:28:37,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:28:37,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:28:37,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,714 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:28:37,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:28:37,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:28:37,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:28:37,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (1/1) ... [2023-09-01 06:28:37,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:28:37,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:28:37,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:28:37,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:28:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:28:37,791 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 06:28:37,792 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 06:28:37,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:28:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:28:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:28:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:28:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 06:28:37,793 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 06:28:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:28:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:28:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:28:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:28:37,795 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:28:37,968 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:28:37,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:28:38,236 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:28:38,244 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:28:38,244 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-09-01 06:28:38,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:28:38 BoogieIcfgContainer [2023-09-01 06:28:38,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:28:38,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:28:38,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:28:38,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:28:38,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:28:37" (1/3) ... [2023-09-01 06:28:38,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc4522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:28:38, skipping insertion in model container [2023-09-01 06:28:38,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:28:37" (2/3) ... [2023-09-01 06:28:38,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc4522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:28:38, skipping insertion in model container [2023-09-01 06:28:38,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:28:38" (3/3) ... [2023-09-01 06:28:38,256 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-09-01 06:28:38,262 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:28:38,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:28:38,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 06:28:38,270 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:28:38,408 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:28:38,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 228 transitions, 478 flow [2023-09-01 06:28:38,568 INFO L130 PetriNetUnfolder]: 58/413 cut-off events. [2023-09-01 06:28:38,568 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 06:28:38,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 413 events. 58/413 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1795 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2023-09-01 06:28:38,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 228 transitions, 478 flow [2023-09-01 06:28:38,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 228 transitions, 478 flow [2023-09-01 06:28:38,592 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:28:38,610 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 228 transitions, 478 flow [2023-09-01 06:28:38,616 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 228 transitions, 478 flow [2023-09-01 06:28:38,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 228 transitions, 478 flow [2023-09-01 06:28:38,703 INFO L130 PetriNetUnfolder]: 58/413 cut-off events. [2023-09-01 06:28:38,704 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 06:28:38,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 413 events. 58/413 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1795 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2023-09-01 06:28:38,724 INFO L119 LiptonReduction]: Number of co-enabled transitions 22204 [2023-09-01 06:28:42,941 INFO L134 LiptonReduction]: Checked pairs total: 46658 [2023-09-01 06:28:42,941 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-09-01 06:28:42,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:28:42,961 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;@14a1109f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:28:42,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:28:42,967 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2023-09-01 06:28:42,967 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:28:42,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:28:42,968 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:28:42,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:28:42,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:28:42,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1163338606, now seen corresponding path program 1 times [2023-09-01 06:28:43,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:28:43,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59744908] [2023-09-01 06:28:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:28:43,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:28:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:43,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:28:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:43,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:28:43,252 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:28:43,253 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:28:43,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:28:43,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:28:43,256 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:28:43,258 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:28:43,259 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:28:43,259 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:28:43,314 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:28:43,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 356 transitions, 760 flow [2023-09-01 06:28:43,645 INFO L130 PetriNetUnfolder]: 197/1252 cut-off events. [2023-09-01 06:28:43,645 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-09-01 06:28:43,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 1252 events. 197/1252 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7729 event pairs, 1 based on Foata normal form. 0/960 useless extension candidates. Maximal degree in co-relation 752. Up to 32 conditions per place. [2023-09-01 06:28:43,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 356 transitions, 760 flow [2023-09-01 06:28:43,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 305 places, 356 transitions, 760 flow [2023-09-01 06:28:43,675 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:28:43,675 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 305 places, 356 transitions, 760 flow [2023-09-01 06:28:43,675 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 305 places, 356 transitions, 760 flow [2023-09-01 06:28:43,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 356 transitions, 760 flow [2023-09-01 06:28:44,023 INFO L130 PetriNetUnfolder]: 197/1252 cut-off events. [2023-09-01 06:28:44,024 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-09-01 06:28:44,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 1252 events. 197/1252 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7729 event pairs, 1 based on Foata normal form. 0/960 useless extension candidates. Maximal degree in co-relation 752. Up to 32 conditions per place. [2023-09-01 06:28:44,097 INFO L119 LiptonReduction]: Number of co-enabled transitions 76616 [2023-09-01 06:28:48,586 INFO L134 LiptonReduction]: Checked pairs total: 168490 [2023-09-01 06:28:48,586 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-09-01 06:28:48,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:28:48,590 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;@14a1109f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:28:48,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:28:48,601 INFO L130 PetriNetUnfolder]: 35/159 cut-off events. [2023-09-01 06:28:48,601 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 06:28:48,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:28:48,602 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:28:48,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:28:48,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:28:48,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1491211159, now seen corresponding path program 1 times [2023-09-01 06:28:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:28:48,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713997356] [2023-09-01 06:28:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:28:48,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:28:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:48,655 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:28:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:48,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:28:48,711 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:28:48,712 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:28:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:28:48,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:28:48,712 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:28:48,713 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:28:48,714 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:28:48,714 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:28:48,772 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:28:48,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 484 transitions, 1046 flow [2023-09-01 06:28:49,769 INFO L130 PetriNetUnfolder]: 664/3663 cut-off events. [2023-09-01 06:28:49,769 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2023-09-01 06:28:49,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 3663 events. 664/3663 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 28035 event pairs, 52 based on Foata normal form. 0/2845 useless extension candidates. Maximal degree in co-relation 2294. Up to 192 conditions per place. [2023-09-01 06:28:49,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 484 transitions, 1046 flow [2023-09-01 06:28:49,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 484 transitions, 1046 flow [2023-09-01 06:28:49,884 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:28:49,884 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 484 transitions, 1046 flow [2023-09-01 06:28:49,884 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 484 transitions, 1046 flow [2023-09-01 06:28:49,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 484 transitions, 1046 flow [2023-09-01 06:28:50,703 INFO L130 PetriNetUnfolder]: 664/3663 cut-off events. [2023-09-01 06:28:50,703 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2023-09-01 06:28:50,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 3663 events. 664/3663 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 28035 event pairs, 52 based on Foata normal form. 0/2845 useless extension candidates. Maximal degree in co-relation 2294. Up to 192 conditions per place. [2023-09-01 06:28:51,075 INFO L119 LiptonReduction]: Number of co-enabled transitions 163236 [2023-09-01 06:28:56,419 INFO L134 LiptonReduction]: Checked pairs total: 427152 [2023-09-01 06:28:56,420 INFO L136 LiptonReduction]: Total number of compositions: 338 [2023-09-01 06:28:56,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:28:56,423 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;@14a1109f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:28:56,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:28:56,453 INFO L130 PetriNetUnfolder]: 80/330 cut-off events. [2023-09-01 06:28:56,454 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-09-01 06:28:56,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:28:56,455 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:28:56,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:28:56,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:28:56,456 INFO L85 PathProgramCache]: Analyzing trace with hash 652063891, now seen corresponding path program 1 times [2023-09-01 06:28:56,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:28:56,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863967180] [2023-09-01 06:28:56,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:28:56,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:28:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:56,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:28:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:56,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:28:56,539 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:28:56,539 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:28:56,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:28:56,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:28:56,540 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:28:56,540 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:28:56,540 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:28:56,541 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:28:56,598 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 06:28:56,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 612 transitions, 1336 flow [2023-09-01 06:29:00,389 INFO L130 PetriNetUnfolder]: 2647/12182 cut-off events. [2023-09-01 06:29:00,389 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-09-01 06:29:00,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14347 conditions, 12182 events. 2647/12182 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 115371 event pairs, 626 based on Foata normal form. 0/9646 useless extension candidates. Maximal degree in co-relation 7511. Up to 1024 conditions per place. [2023-09-01 06:29:00,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 612 transitions, 1336 flow [2023-09-01 06:29:01,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 513 places, 612 transitions, 1336 flow [2023-09-01 06:29:01,118 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:29:01,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 513 places, 612 transitions, 1336 flow [2023-09-01 06:29:01,119 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 513 places, 612 transitions, 1336 flow [2023-09-01 06:29:01,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 612 transitions, 1336 flow [2023-09-01 06:29:04,370 INFO L130 PetriNetUnfolder]: 2647/12182 cut-off events. [2023-09-01 06:29:04,371 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-09-01 06:29:04,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14347 conditions, 12182 events. 2647/12182 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 115371 event pairs, 626 based on Foata normal form. 0/9646 useless extension candidates. Maximal degree in co-relation 7511. Up to 1024 conditions per place. [2023-09-01 06:29:05,560 INFO L119 LiptonReduction]: Number of co-enabled transitions 282064 [2023-09-01 06:29:11,337 INFO L134 LiptonReduction]: Checked pairs total: 683093 [2023-09-01 06:29:11,337 INFO L136 LiptonReduction]: Total number of compositions: 419 [2023-09-01 06:29:11,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:29:11,340 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;@14a1109f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:29:11,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:29:11,387 INFO L130 PetriNetUnfolder]: 146/590 cut-off events. [2023-09-01 06:29:11,387 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-09-01 06:29:11,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:29:11,387 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:29:11,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:29:11,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:29:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash 68341322, now seen corresponding path program 1 times [2023-09-01 06:29:11,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:29:11,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232456771] [2023-09-01 06:29:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:29:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:29:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:29:11,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:29:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:29:11,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:29:11,464 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:29:11,464 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:29:11,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:29:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:29:11,465 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:29:11,466 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:29:11,466 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:29:11,466 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:29:11,516 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 06:29:11,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 617 places, 740 transitions, 1630 flow [2023-09-01 06:29:28,164 INFO L130 PetriNetUnfolder]: 11762/45817 cut-off events. [2023-09-01 06:29:28,164 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2023-09-01 06:29:31,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56243 conditions, 45817 events. 11762/45817 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 536455 event pairs, 4296 based on Foata normal form. 0/36915 useless extension candidates. Maximal degree in co-relation 28070. Up to 5120 conditions per place. [2023-09-01 06:29:31,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 617 places, 740 transitions, 1630 flow [2023-09-01 06:29:32,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 617 places, 740 transitions, 1630 flow [2023-09-01 06:29:32,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:29:32,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 617 places, 740 transitions, 1630 flow [2023-09-01 06:29:32,212 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 617 places, 740 transitions, 1630 flow [2023-09-01 06:29:32,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 617 places, 740 transitions, 1630 flow [2023-09-01 06:29:48,582 INFO L130 PetriNetUnfolder]: 11762/45817 cut-off events. [2023-09-01 06:29:48,583 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2023-09-01 06:29:51,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56243 conditions, 45817 events. 11762/45817 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 536455 event pairs, 4296 based on Foata normal form. 0/36915 useless extension candidates. Maximal degree in co-relation 28070. Up to 5120 conditions per place. [2023-09-01 06:29:55,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 433100 [2023-09-01 06:30:02,420 INFO L134 LiptonReduction]: Checked pairs total: 1209604 [2023-09-01 06:30:02,420 INFO L136 LiptonReduction]: Total number of compositions: 501 [2023-09-01 06:30:02,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:30:02,432 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;@14a1109f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:30:02,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:30:02,521 INFO L130 PetriNetUnfolder]: 249/981 cut-off events. [2023-09-01 06:30:02,522 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-09-01 06:30:02,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:30:02,522 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:30:02,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:30:02,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:30:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash 424854150, now seen corresponding path program 1 times [2023-09-01 06:30:02,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:30:02,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602582875] [2023-09-01 06:30:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:30:02,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:30:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:02,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:30:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:02,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:30:02,572 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:30:02,572 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:30:02,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:30:02,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:30:02,572 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:30:02,574 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:30:02,574 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:30:02,575 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:30:02,632 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 06:30:02,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 721 places, 868 transitions, 1928 flow [2023-09-01 06:31:33,148 INFO L130 PetriNetUnfolder]: 53929/184056 cut-off events. [2023-09-01 06:31:33,148 INFO L131 PetriNetUnfolder]: For 49552/49552 co-relation queries the response was YES. [2023-09-01 06:31:55,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233485 conditions, 184056 events. 53929/184056 cut-off events. For 49552/49552 co-relation queries the response was YES. Maximal size of possible extension queue 2083. Compared 2551324 event pairs, 24930 based on Foata normal form. 0/150316 useless extension candidates. Maximal degree in co-relation 114086. Up to 24576 conditions per place. [2023-09-01 06:31:55,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 721 places, 868 transitions, 1928 flow [2023-09-01 06:32:06,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 721 places, 868 transitions, 1928 flow [2023-09-01 06:32:06,347 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:32:06,347 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 721 places, 868 transitions, 1928 flow [2023-09-01 06:32:06,348 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 721 places, 868 transitions, 1928 flow [2023-09-01 06:32:06,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 721 places, 868 transitions, 1928 flow [2023-09-01 06:33:41,441 INFO L130 PetriNetUnfolder]: 53929/184056 cut-off events. [2023-09-01 06:33:41,442 INFO L131 PetriNetUnfolder]: For 49552/49552 co-relation queries the response was YES. [2023-09-01 06:34:04,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233485 conditions, 184056 events. 53929/184056 cut-off events. For 49552/49552 co-relation queries the response was YES. Maximal size of possible extension queue 2083. Compared 2551324 event pairs, 24930 based on Foata normal form. 0/150316 useless extension candidates. Maximal degree in co-relation 114086. Up to 24576 conditions per place. [2023-09-01 06:34:45,145 INFO L119 LiptonReduction]: Number of co-enabled transitions 616344 [2023-09-01 06:34:54,466 INFO L134 LiptonReduction]: Checked pairs total: 1500124 [2023-09-01 06:34:54,466 INFO L136 LiptonReduction]: Total number of compositions: 595 [2023-09-01 06:34:54,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:54,486 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;@14a1109f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:54,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:34:54,705 INFO L130 PetriNetUnfolder]: 401/1541 cut-off events. [2023-09-01 06:34:54,705 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2023-09-01 06:34:54,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:54,705 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:34:54,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:54,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:54,706 INFO L85 PathProgramCache]: Analyzing trace with hash 542339619, now seen corresponding path program 1 times [2023-09-01 06:34:54,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:54,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953927870] [2023-09-01 06:34:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:54,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:54,776 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:54,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:54,824 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:54,825 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:34:54,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:34:54,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:34:54,826 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:54,826 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:34:54,826 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:54,826 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:34:54,902 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-09-01 06:34:54,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 825 places, 996 transitions, 2230 flow