./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --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 10:54:05,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:54:05,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:54:05,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:54:05,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:54:05,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:54:05,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:54:05,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:54:05,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:54:05,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:54:05,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:54:05,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:54:05,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:54:05,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:54:05,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:54:05,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:54:05,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:54:05,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:54:05,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:54:05,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:54:05,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:54:05,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:54:05,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:54:05,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:54:05,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:54:05,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:54:05,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:54:05,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:54:05,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:54:05,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:54:05,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:54:05,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:54:05,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:54:05,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:54:05,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:54:05,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:54:05,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:54:05,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:54:05,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:54:05,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:54:05,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:54:05,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:54:05,364 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:54:05,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:54:05,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:54:05,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:54:05,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:54:05,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:54:05,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:54:05,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:54:05,368 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:54:05,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:54:05,369 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:54:05,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:54:05,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:54:05,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:54:05,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:54:05,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:54:05,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:54:05,370 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:54:05,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:54:05,370 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:54:05,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:54:05,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:54:05,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:54:05,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:54:05,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:54:05,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:54:05,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:54:05,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:54:05,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:54:05,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:54:05,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:54:05,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:54:05,373 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:54:05,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:54:05,374 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:54:05,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:54:05,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:54:05,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:54:05,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:54:05,716 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:54:05,716 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:54:05,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-09-01 10:54:06,964 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:54:07,241 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:54:07,245 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-09-01 10:54:07,266 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b0d9e44/91fe3ff2df5e494795a99928f76b4b4d/FLAGc7a5e165d [2023-09-01 10:54:07,282 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b0d9e44/91fe3ff2df5e494795a99928f76b4b4d [2023-09-01 10:54:07,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:54:07,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:54:07,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:54:07,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:54:07,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:54:07,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a93394c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07, skipping insertion in model container [2023-09-01 10:54:07,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:54:07,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:54:07,546 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_12-ptr_racefree.i[30176,30189] [2023-09-01 10:54:07,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:54:07,577 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:54:07,637 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_12-ptr_racefree.i[30176,30189] [2023-09-01 10:54:07,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:54:07,700 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:54:07,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07 WrapperNode [2023-09-01 10:54:07,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:54:07,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:54:07,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:54:07,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:54:07,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,771 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-09-01 10:54:07,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:54:07,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:54:07,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:54:07,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:54:07,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:54:07,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:54:07,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:54:07,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:54:07,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (1/1) ... [2023-09-01 10:54:07,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:54:07,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:54:07,833 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 10:54:07,835 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 10:54:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:54:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:54:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:54:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:54:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:54:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:54:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:54:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:54:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:54:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:54:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:54:07,866 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 10:54:07,983 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:54:07,986 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:54:08,281 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:54:08,287 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:54:08,287 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 10:54:08,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:54:08 BoogieIcfgContainer [2023-09-01 10:54:08,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:54:08,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:54:08,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:54:08,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:54:08,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:54:07" (1/3) ... [2023-09-01 10:54:08,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46005b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:54:08, skipping insertion in model container [2023-09-01 10:54:08,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:07" (2/3) ... [2023-09-01 10:54:08,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46005b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:54:08, skipping insertion in model container [2023-09-01 10:54:08,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:54:08" (3/3) ... [2023-09-01 10:54:08,296 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2023-09-01 10:54:08,303 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:54:08,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:54:08,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:54:08,312 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:54:08,392 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:54:08,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 117 transitions, 242 flow [2023-09-01 10:54:08,527 INFO L130 PetriNetUnfolder]: 17/152 cut-off events. [2023-09-01 10:54:08,528 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:54:08,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 152 events. 17/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 349 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-09-01 10:54:08,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 117 transitions, 242 flow [2023-09-01 10:54:08,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 112 transitions, 229 flow [2023-09-01 10:54:08,544 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:08,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 112 transitions, 229 flow [2023-09-01 10:54:08,564 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 112 transitions, 229 flow [2023-09-01 10:54:08,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 112 transitions, 229 flow [2023-09-01 10:54:08,590 INFO L130 PetriNetUnfolder]: 16/147 cut-off events. [2023-09-01 10:54:08,591 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:54:08,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 147 events. 16/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 333 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-09-01 10:54:08,594 INFO L119 LiptonReduction]: Number of co-enabled transitions 2706 [2023-09-01 10:54:11,538 INFO L134 LiptonReduction]: Checked pairs total: 4811 [2023-09-01 10:54:11,539 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-09-01 10:54:11,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:11,561 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:11,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:11,567 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-09-01 10:54:11,568 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:54:11,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:11,569 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:54:11,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:11,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash 279667799, now seen corresponding path program 1 times [2023-09-01 10:54:11,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:11,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101122502] [2023-09-01 10:54:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:11,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:11,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:11,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:11,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:11,731 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:11,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:54:11,733 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:11,735 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:11,736 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:11,736 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:54:11,755 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:54:11,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 152 transitions, 322 flow [2023-09-01 10:54:11,792 INFO L130 PetriNetUnfolder]: 31/246 cut-off events. [2023-09-01 10:54:11,793 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:54:11,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 246 events. 31/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 717 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-09-01 10:54:11,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 152 transitions, 322 flow [2023-09-01 10:54:11,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 152 transitions, 322 flow [2023-09-01 10:54:11,797 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:11,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 152 transitions, 322 flow [2023-09-01 10:54:11,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 152 transitions, 322 flow [2023-09-01 10:54:11,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 152 transitions, 322 flow [2023-09-01 10:54:11,831 INFO L130 PetriNetUnfolder]: 31/246 cut-off events. [2023-09-01 10:54:11,832 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:54:11,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 246 events. 31/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 717 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-09-01 10:54:11,839 INFO L119 LiptonReduction]: Number of co-enabled transitions 8316 [2023-09-01 10:54:14,732 INFO L134 LiptonReduction]: Checked pairs total: 18331 [2023-09-01 10:54:14,732 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-09-01 10:54:14,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:14,735 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:14,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:14,741 INFO L130 PetriNetUnfolder]: 10/56 cut-off events. [2023-09-01 10:54:14,742 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:54:14,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:14,742 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:54:14,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:14,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:14,743 INFO L85 PathProgramCache]: Analyzing trace with hash -643666801, now seen corresponding path program 1 times [2023-09-01 10:54:14,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:14,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586672720] [2023-09-01 10:54:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:14,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:14,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:14,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:14,833 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:14,834 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:14,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:54:14,834 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:14,836 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:14,837 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:14,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:54:14,863 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:54:14,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 187 transitions, 404 flow [2023-09-01 10:54:14,912 INFO L130 PetriNetUnfolder]: 50/371 cut-off events. [2023-09-01 10:54:14,912 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:54:14,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 371 events. 50/371 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1228 event pairs, 1 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 254. Up to 16 conditions per place. [2023-09-01 10:54:14,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 187 transitions, 404 flow [2023-09-01 10:54:14,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 187 transitions, 404 flow [2023-09-01 10:54:14,918 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:14,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 187 transitions, 404 flow [2023-09-01 10:54:14,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 187 transitions, 404 flow [2023-09-01 10:54:14,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 187 transitions, 404 flow [2023-09-01 10:54:14,962 INFO L130 PetriNetUnfolder]: 50/371 cut-off events. [2023-09-01 10:54:14,962 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:54:14,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 371 events. 50/371 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1228 event pairs, 1 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 254. Up to 16 conditions per place. [2023-09-01 10:54:14,976 INFO L119 LiptonReduction]: Number of co-enabled transitions 16038 [2023-09-01 10:54:17,809 INFO L134 LiptonReduction]: Checked pairs total: 34965 [2023-09-01 10:54:17,809 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-09-01 10:54:17,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:17,813 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:17,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:17,820 INFO L130 PetriNetUnfolder]: 19/91 cut-off events. [2023-09-01 10:54:17,820 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:54:17,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:17,820 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:54:17,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:17,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:17,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1949228637, now seen corresponding path program 1 times [2023-09-01 10:54:17,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:17,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685762932] [2023-09-01 10:54:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:17,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:17,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:17,914 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:17,915 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:17,915 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:17,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:54:17,916 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:17,916 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:17,916 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:17,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:54:17,970 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:54:17,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 222 transitions, 488 flow [2023-09-01 10:54:18,036 INFO L130 PetriNetUnfolder]: 81/560 cut-off events. [2023-09-01 10:54:18,036 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:54:18,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 560 events. 81/560 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2118 event pairs, 6 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 391. Up to 32 conditions per place. [2023-09-01 10:54:18,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 222 transitions, 488 flow [2023-09-01 10:54:18,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 222 transitions, 488 flow [2023-09-01 10:54:18,047 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:18,047 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 222 transitions, 488 flow [2023-09-01 10:54:18,048 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 222 transitions, 488 flow [2023-09-01 10:54:18,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 222 transitions, 488 flow [2023-09-01 10:54:18,138 INFO L130 PetriNetUnfolder]: 81/560 cut-off events. [2023-09-01 10:54:18,139 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:54:18,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 560 events. 81/560 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2118 event pairs, 6 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 391. Up to 32 conditions per place. [2023-09-01 10:54:18,161 INFO L119 LiptonReduction]: Number of co-enabled transitions 26136 [2023-09-01 10:54:21,152 INFO L134 LiptonReduction]: Checked pairs total: 59650 [2023-09-01 10:54:21,152 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-09-01 10:54:21,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:21,155 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:21,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:21,165 INFO L130 PetriNetUnfolder]: 29/130 cut-off events. [2023-09-01 10:54:21,166 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:54:21,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:21,166 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:21,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:21,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash 158876387, now seen corresponding path program 1 times [2023-09-01 10:54:21,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:21,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039019705] [2023-09-01 10:54:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:21,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:21,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:21,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:21,263 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:21,263 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:21,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:54:21,263 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:21,264 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:21,264 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:21,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:54:21,291 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:54:21,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 257 transitions, 574 flow [2023-09-01 10:54:21,412 INFO L130 PetriNetUnfolder]: 140/881 cut-off events. [2023-09-01 10:54:21,412 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:54:21,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 881 events. 140/881 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3972 event pairs, 23 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 605. Up to 80 conditions per place. [2023-09-01 10:54:21,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 257 transitions, 574 flow [2023-09-01 10:54:21,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 257 transitions, 574 flow [2023-09-01 10:54:21,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:21,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 257 transitions, 574 flow [2023-09-01 10:54:21,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 257 transitions, 574 flow [2023-09-01 10:54:21,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 257 transitions, 574 flow [2023-09-01 10:54:21,562 INFO L130 PetriNetUnfolder]: 140/881 cut-off events. [2023-09-01 10:54:21,563 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:54:21,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 881 events. 140/881 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3972 event pairs, 23 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 605. Up to 80 conditions per place. [2023-09-01 10:54:21,593 INFO L119 LiptonReduction]: Number of co-enabled transitions 38610 [2023-09-01 10:54:24,581 INFO L134 LiptonReduction]: Checked pairs total: 101878 [2023-09-01 10:54:24,581 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-09-01 10:54:24,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:24,584 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:24,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:24,603 INFO L130 PetriNetUnfolder]: 41/178 cut-off events. [2023-09-01 10:54:24,603 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:54:24,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:24,604 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:24,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:24,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:24,604 INFO L85 PathProgramCache]: Analyzing trace with hash -572860593, now seen corresponding path program 1 times [2023-09-01 10:54:24,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:24,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403691738] [2023-09-01 10:54:24,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:24,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:24,630 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:24,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:24,652 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:24,652 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:24,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:54:24,653 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:24,653 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:24,653 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:24,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:54:24,678 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:54:24,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 292 transitions, 662 flow [2023-09-01 10:54:24,919 INFO L130 PetriNetUnfolder]: 263/1474 cut-off events. [2023-09-01 10:54:24,920 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:54:24,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1474 events. 263/1474 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7969 event pairs, 72 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 980. Up to 192 conditions per place. [2023-09-01 10:54:24,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 292 transitions, 662 flow [2023-09-01 10:54:24,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 292 transitions, 662 flow [2023-09-01 10:54:24,989 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:24,990 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 292 transitions, 662 flow [2023-09-01 10:54:24,993 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 292 transitions, 662 flow [2023-09-01 10:54:24,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 292 transitions, 662 flow [2023-09-01 10:54:25,191 INFO L130 PetriNetUnfolder]: 263/1474 cut-off events. [2023-09-01 10:54:25,192 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:54:25,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1474 events. 263/1474 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7969 event pairs, 72 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 980. Up to 192 conditions per place. [2023-09-01 10:54:25,301 INFO L119 LiptonReduction]: Number of co-enabled transitions 53460 [2023-09-01 10:54:28,582 INFO L134 LiptonReduction]: Checked pairs total: 142960 [2023-09-01 10:54:28,582 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-09-01 10:54:28,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:28,585 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:28,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:28,604 INFO L130 PetriNetUnfolder]: 56/239 cut-off events. [2023-09-01 10:54:28,604 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:54:28,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:28,605 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:28,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:28,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:28,605 INFO L85 PathProgramCache]: Analyzing trace with hash 760184947, now seen corresponding path program 1 times [2023-09-01 10:54:28,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:28,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212555084] [2023-09-01 10:54:28,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:28,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:28,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:28,645 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:28,646 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:28,646 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:28,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:54:28,646 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:28,647 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:28,647 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:28,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:54:28,682 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:54:28,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 327 transitions, 752 flow [2023-09-01 10:54:29,213 INFO L130 PetriNetUnfolder]: 530/2627 cut-off events. [2023-09-01 10:54:29,214 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:54:29,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 2627 events. 530/2627 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17471 event pairs, 201 based on Foata normal form. 0/2281 useless extension candidates. Maximal degree in co-relation 1692. Up to 448 conditions per place. [2023-09-01 10:54:29,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 288 places, 327 transitions, 752 flow [2023-09-01 10:54:29,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 288 places, 327 transitions, 752 flow [2023-09-01 10:54:29,283 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:29,283 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 288 places, 327 transitions, 752 flow [2023-09-01 10:54:29,284 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 288 places, 327 transitions, 752 flow [2023-09-01 10:54:29,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 327 transitions, 752 flow [2023-09-01 10:54:29,806 INFO L130 PetriNetUnfolder]: 530/2627 cut-off events. [2023-09-01 10:54:29,807 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:54:29,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 2627 events. 530/2627 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17471 event pairs, 201 based on Foata normal form. 0/2281 useless extension candidates. Maximal degree in co-relation 1692. Up to 448 conditions per place. [2023-09-01 10:54:29,992 INFO L119 LiptonReduction]: Number of co-enabled transitions 70686 [2023-09-01 10:54:33,462 INFO L134 LiptonReduction]: Checked pairs total: 189902 [2023-09-01 10:54:33,462 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-09-01 10:54:33,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:33,467 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:33,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:33,492 INFO L130 PetriNetUnfolder]: 76/314 cut-off events. [2023-09-01 10:54:33,493 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:54:33,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:33,493 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:33,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:33,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:33,494 INFO L85 PathProgramCache]: Analyzing trace with hash 629390707, now seen corresponding path program 1 times [2023-09-01 10:54:33,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:33,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240549114] [2023-09-01 10:54:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:33,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:33,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:33,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:33,590 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:33,591 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:33,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:54:33,591 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:33,592 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:33,592 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:33,592 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:54:33,619 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:54:33,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 362 transitions, 844 flow [2023-09-01 10:54:34,660 INFO L130 PetriNetUnfolder]: 1117/4932 cut-off events. [2023-09-01 10:54:34,662 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:54:34,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6017 conditions, 4932 events. 1117/4932 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 38284 event pairs, 522 based on Foata normal form. 0/4318 useless extension candidates. Maximal degree in co-relation 3109. Up to 1024 conditions per place. [2023-09-01 10:54:34,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 362 transitions, 844 flow [2023-09-01 10:54:34,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 362 transitions, 844 flow [2023-09-01 10:54:34,801 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:34,801 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 362 transitions, 844 flow [2023-09-01 10:54:34,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 362 transitions, 844 flow [2023-09-01 10:54:34,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 362 transitions, 844 flow [2023-09-01 10:54:35,791 INFO L130 PetriNetUnfolder]: 1117/4932 cut-off events. [2023-09-01 10:54:35,791 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:54:35,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6017 conditions, 4932 events. 1117/4932 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 38284 event pairs, 522 based on Foata normal form. 0/4318 useless extension candidates. Maximal degree in co-relation 3109. Up to 1024 conditions per place. [2023-09-01 10:54:36,140 INFO L119 LiptonReduction]: Number of co-enabled transitions 90288 [2023-09-01 10:54:39,563 INFO L134 LiptonReduction]: Checked pairs total: 227084 [2023-09-01 10:54:39,563 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-09-01 10:54:39,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:39,565 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:39,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:39,601 INFO L130 PetriNetUnfolder]: 105/419 cut-off events. [2023-09-01 10:54:39,601 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:54:39,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:39,602 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:39,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:39,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:39,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1596319349, now seen corresponding path program 1 times [2023-09-01 10:54:39,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:39,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081386841] [2023-09-01 10:54:39,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:39,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:39,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:39,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:39,643 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:39,643 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:39,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:54:39,643 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:39,644 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:39,644 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:39,644 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:54:39,673 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:54:39,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 397 transitions, 938 flow [2023-09-01 10:54:41,393 INFO L130 PetriNetUnfolder]: 2408/9605 cut-off events. [2023-09-01 10:54:41,394 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:54:41,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11982 conditions, 9605 events. 2408/9605 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86487 event pairs, 1291 based on Foata normal form. 0/8467 useless extension candidates. Maximal degree in co-relation 5999. Up to 2304 conditions per place. [2023-09-01 10:54:41,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 348 places, 397 transitions, 938 flow [2023-09-01 10:54:41,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 348 places, 397 transitions, 938 flow [2023-09-01 10:54:41,785 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:41,785 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 348 places, 397 transitions, 938 flow [2023-09-01 10:54:41,785 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 348 places, 397 transitions, 938 flow [2023-09-01 10:54:41,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 397 transitions, 938 flow [2023-09-01 10:54:43,593 INFO L130 PetriNetUnfolder]: 2408/9605 cut-off events. [2023-09-01 10:54:43,593 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:54:43,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11982 conditions, 9605 events. 2408/9605 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86487 event pairs, 1291 based on Foata normal form. 0/8467 useless extension candidates. Maximal degree in co-relation 5999. Up to 2304 conditions per place. [2023-09-01 10:54:44,234 INFO L119 LiptonReduction]: Number of co-enabled transitions 112266 [2023-09-01 10:54:47,854 INFO L134 LiptonReduction]: Checked pairs total: 279095 [2023-09-01 10:54:47,854 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-09-01 10:54:47,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:47,856 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:47,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:47,897 INFO L130 PetriNetUnfolder]: 150/572 cut-off events. [2023-09-01 10:54:47,898 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:54:47,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:47,898 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:47,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:47,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 305852689, now seen corresponding path program 1 times [2023-09-01 10:54:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:47,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367458250] [2023-09-01 10:54:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:47,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:47,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:47,938 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:47,938 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:47,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:47,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:54:47,939 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:47,939 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:47,939 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:47,940 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:54:47,970 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:54:47,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 432 transitions, 1034 flow [2023-09-01 10:54:52,023 INFO L130 PetriNetUnfolder]: 5235/19142 cut-off events. [2023-09-01 10:54:52,024 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:54:52,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24348 conditions, 19142 events. 5235/19142 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 194220 event pairs, 3084 based on Foata normal form. 0/16968 useless extension candidates. Maximal degree in co-relation 11962. Up to 5120 conditions per place. [2023-09-01 10:54:52,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 432 transitions, 1034 flow [2023-09-01 10:54:52,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 432 transitions, 1034 flow [2023-09-01 10:54:52,566 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:52,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 378 places, 432 transitions, 1034 flow [2023-09-01 10:54:52,567 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 378 places, 432 transitions, 1034 flow [2023-09-01 10:54:52,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 432 transitions, 1034 flow [2023-09-01 10:54:56,544 INFO L130 PetriNetUnfolder]: 5235/19142 cut-off events. [2023-09-01 10:54:56,545 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:54:56,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24348 conditions, 19142 events. 5235/19142 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 194220 event pairs, 3084 based on Foata normal form. 0/16968 useless extension candidates. Maximal degree in co-relation 11962. Up to 5120 conditions per place. [2023-09-01 10:54:57,680 INFO L119 LiptonReduction]: Number of co-enabled transitions 136620 [2023-09-01 10:55:01,499 INFO L134 LiptonReduction]: Checked pairs total: 384339 [2023-09-01 10:55:01,499 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-09-01 10:55:01,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:01,501 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:01,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:55:01,573 INFO L130 PetriNetUnfolder]: 224/796 cut-off events. [2023-09-01 10:55:01,574 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:55:01,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:01,574 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:01,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:01,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:01,574 INFO L85 PathProgramCache]: Analyzing trace with hash -19076975, now seen corresponding path program 1 times [2023-09-01 10:55:01,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:01,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567771557] [2023-09-01 10:55:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:01,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:01,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:01,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:01,621 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:01,622 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:55:01,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:55:01,622 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:01,623 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:55:01,623 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:01,623 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:55:01,661 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:55:01,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 467 transitions, 1132 flow [2023-09-01 10:55:10,650 INFO L130 PetriNetUnfolder]: 11390/38663 cut-off events. [2023-09-01 10:55:10,650 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:55:11,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50027 conditions, 38663 events. 11390/38663 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 439465 event pairs, 7181 based on Foata normal form. 0/34429 useless extension candidates. Maximal degree in co-relation 24326. Up to 11264 conditions per place. [2023-09-01 10:55:11,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 467 transitions, 1132 flow [2023-09-01 10:55:12,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 408 places, 467 transitions, 1132 flow [2023-09-01 10:55:12,233 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:55:12,233 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 408 places, 467 transitions, 1132 flow [2023-09-01 10:55:12,233 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 408 places, 467 transitions, 1132 flow [2023-09-01 10:55:12,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 467 transitions, 1132 flow [2023-09-01 10:55:21,203 INFO L130 PetriNetUnfolder]: 11390/38663 cut-off events. [2023-09-01 10:55:21,203 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:55:22,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50027 conditions, 38663 events. 11390/38663 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 439465 event pairs, 7181 based on Foata normal form. 0/34429 useless extension candidates. Maximal degree in co-relation 24326. Up to 11264 conditions per place. [2023-09-01 10:55:24,875 INFO L119 LiptonReduction]: Number of co-enabled transitions 163350 [2023-09-01 10:55:28,870 INFO L134 LiptonReduction]: Checked pairs total: 415544 [2023-09-01 10:55:28,870 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-09-01 10:55:28,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:28,873 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:28,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:55:28,974 INFO L130 PetriNetUnfolder]: 349/1143 cut-off events. [2023-09-01 10:55:28,974 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:55:28,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:28,974 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:28,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:28,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2081936592, now seen corresponding path program 1 times [2023-09-01 10:55:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655447945] [2023-09-01 10:55:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:29,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:29,026 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:29,027 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:29,027 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:55:29,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:55:29,027 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:29,028 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:55:29,028 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:29,028 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:55:29,067 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:55:29,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 502 transitions, 1232 flow [2023-09-01 10:55:49,398 INFO L130 PetriNetUnfolder]: 24713/78664 cut-off events. [2023-09-01 10:55:49,399 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:55:54,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103355 conditions, 78664 events. 24713/78664 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 979789 event pairs, 16398 based on Foata normal form. 0/70322 useless extension candidates. Maximal degree in co-relation 50003. Up to 24576 conditions per place. [2023-09-01 10:55:54,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 438 places, 502 transitions, 1232 flow [2023-09-01 10:55:55,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 438 places, 502 transitions, 1232 flow [2023-09-01 10:55:55,859 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:55:55,860 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 438 places, 502 transitions, 1232 flow [2023-09-01 10:55:55,860 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 438 places, 502 transitions, 1232 flow [2023-09-01 10:55:55,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 502 transitions, 1232 flow [2023-09-01 10:56:18,033 INFO L130 PetriNetUnfolder]: 24713/78664 cut-off events. [2023-09-01 10:56:18,033 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:56:22,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103355 conditions, 78664 events. 24713/78664 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 979789 event pairs, 16398 based on Foata normal form. 0/70322 useless extension candidates. Maximal degree in co-relation 50003. Up to 24576 conditions per place. [2023-09-01 10:56:29,845 INFO L119 LiptonReduction]: Number of co-enabled transitions 192456 [2023-09-01 10:56:34,138 INFO L134 LiptonReduction]: Checked pairs total: 548308 [2023-09-01 10:56:34,138 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-09-01 10:56:34,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:34,140 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:34,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:34,278 INFO L130 PetriNetUnfolder]: 560/1685 cut-off events. [2023-09-01 10:56:34,278 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:56:34,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:34,278 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 10:56:34,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:34,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash 682333570, now seen corresponding path program 1 times [2023-09-01 10:56:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:34,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692493936] [2023-09-01 10:56:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:34,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:34,308 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:34,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:34,338 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:34,338 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:34,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:56:34,339 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:34,342 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:34,342 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:34,342 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:56:34,381 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:56:34,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 537 transitions, 1334 flow [2023-09-01 10:57:21,858 INFO L130 PetriNetUnfolder]: 53396/160649 cut-off events. [2023-09-01 10:57:21,858 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:57:34,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214028 conditions, 160649 events. 53396/160649 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2807. Compared 2158530 event pairs, 36879 based on Foata normal form. 0/144103 useless extension candidates. Maximal degree in co-relation 103329. Up to 53248 conditions per place. [2023-09-01 10:57:34,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 468 places, 537 transitions, 1334 flow [2023-09-01 10:57:38,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 468 places, 537 transitions, 1334 flow [2023-09-01 10:57:38,183 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:38,183 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 468 places, 537 transitions, 1334 flow [2023-09-01 10:57:38,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 468 places, 537 transitions, 1334 flow [2023-09-01 10:57:38,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 537 transitions, 1334 flow [2023-09-01 10:58:25,886 INFO L130 PetriNetUnfolder]: 53396/160649 cut-off events. [2023-09-01 10:58:25,887 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:58:36,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214028 conditions, 160649 events. 53396/160649 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2807. Compared 2158530 event pairs, 36879 based on Foata normal form. 0/144103 useless extension candidates. Maximal degree in co-relation 103329. Up to 53248 conditions per place. [2023-09-01 10:58:54,115 INFO L119 LiptonReduction]: Number of co-enabled transitions 223938 [2023-09-01 10:58:58,441 INFO L134 LiptonReduction]: Checked pairs total: 553209 [2023-09-01 10:58:58,441 INFO L136 LiptonReduction]: Total number of compositions: 342 [2023-09-01 10:58:58,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:58,444 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;@7a2c6ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:58,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:58,658 INFO L130 PetriNetUnfolder]: 913/2530 cut-off events. [2023-09-01 10:58:58,659 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 10:58:58,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:58,659 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 10:58:58,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:58,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash 303454467, now seen corresponding path program 1 times [2023-09-01 10:58:58,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:58,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608450757] [2023-09-01 10:58:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:58,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:58,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:58,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:58,709 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:58,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:58,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:58:58,709 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:58,710 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:58,710 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:58,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:58:58,750 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 10:58:58,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 498 places, 572 transitions, 1438 flow