./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:35:40,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:35:40,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:35:40,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:35:40,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:35:40,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:35:40,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:35:40,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:35:40,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:35:40,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:35:40,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:35:40,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:35:40,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:35:40,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:35:40,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:35:40,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:35:40,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:35:40,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:35:40,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:35:40,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:35:40,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:35:40,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:35:40,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:35:40,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:35:40,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:35:40,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:35:40,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:35:40,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:35:40,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:35:40,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:35:40,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:35:40,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:35:40,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:35:40,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:35:40,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:35:40,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:35:40,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:35:40,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:35:40,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:35:40,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:35:40,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:35:40,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:35:40,412 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:35:40,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:35:40,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:35:40,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:35:40,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:35:40,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:35:40,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:35:40,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:35:40,416 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:35:40,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:35:40,417 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:35:40,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:35:40,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:35:40,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:35:40,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:35:40,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:35:40,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:35:40,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:35:40,418 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:35:40,418 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:35:40,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:35:40,419 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:35:40,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:35:40,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:35:40,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:35:40,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:35:40,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:35:40,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:35:40,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:35:40,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:35:40,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:35:40,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:35:40,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:35:40,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:35:40,421 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:35:40,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:35:40,422 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:35:40,422 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:35:40,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:35:40,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:35:40,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:35:40,799 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:35:40,799 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:35:40,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-09-01 06:35:41,914 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:35:42,181 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:35:42,185 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-09-01 06:35:42,200 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31578c00/d1af6849be2647f3b8c8f03684763d24/FLAG6553bb61a [2023-09-01 06:35:42,213 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31578c00/d1af6849be2647f3b8c8f03684763d24 [2023-09-01 06:35:42,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:35:42,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:35:42,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:35:42,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:35:42,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:35:42,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9f238c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42, skipping insertion in model container [2023-09-01 06:35:42,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:35:42,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:35:42,525 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_09-ptrmunge_racing.i[30176,30189] [2023-09-01 06:35:42,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:35:42,576 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:35:42,618 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_09-ptrmunge_racing.i[30176,30189] [2023-09-01 06:35:42,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:35:42,679 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:35:42,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42 WrapperNode [2023-09-01 06:35:42,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:35:42,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:35:42,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:35:42,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:35:42,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,748 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 234 [2023-09-01 06:35:42,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:35:42,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:35:42,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:35:42,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:35:42,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,805 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:35:42,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:35:42,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:35:42,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:35:42,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (1/1) ... [2023-09-01 06:35:42,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:35:42,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:35:42,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:35:42,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:35:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:35:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 06:35:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 06:35:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:35:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:35:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:35:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:35:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 06:35:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 06:35:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:35:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:35:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:35:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:35:42,921 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:35:43,126 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:35:43,142 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:35:43,434 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:35:43,442 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:35:43,442 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-09-01 06:35:43,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:35:43 BoogieIcfgContainer [2023-09-01 06:35:43,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:35:43,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:35:43,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:35:43,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:35:43,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:35:42" (1/3) ... [2023-09-01 06:35:43,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a41323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:35:43, skipping insertion in model container [2023-09-01 06:35:43,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:35:42" (2/3) ... [2023-09-01 06:35:43,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a41323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:35:43, skipping insertion in model container [2023-09-01 06:35:43,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:35:43" (3/3) ... [2023-09-01 06:35:43,459 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-09-01 06:35:43,466 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:35:43,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:35:43,475 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 06:35:43,476 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:35:43,621 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:35:43,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 245 transitions, 512 flow [2023-09-01 06:35:43,795 INFO L130 PetriNetUnfolder]: 58/437 cut-off events. [2023-09-01 06:35:43,795 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 06:35:43,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 437 events. 58/437 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1925 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-09-01 06:35:43,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 245 transitions, 512 flow [2023-09-01 06:35:43,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 245 transitions, 512 flow [2023-09-01 06:35:43,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:43,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 245 transitions, 512 flow [2023-09-01 06:35:43,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 245 transitions, 512 flow [2023-09-01 06:35:43,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 245 transitions, 512 flow [2023-09-01 06:35:43,921 INFO L130 PetriNetUnfolder]: 58/437 cut-off events. [2023-09-01 06:35:43,922 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 06:35:43,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 437 events. 58/437 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1925 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-09-01 06:35:43,948 INFO L119 LiptonReduction]: Number of co-enabled transitions 25704 [2023-09-01 06:35:48,767 INFO L134 LiptonReduction]: Checked pairs total: 47433 [2023-09-01 06:35:48,769 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-09-01 06:35:48,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:48,832 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;@671201c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:48,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:35:48,860 INFO L130 PetriNetUnfolder]: 3/30 cut-off events. [2023-09-01 06:35:48,860 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:35:48,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:48,862 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:35:48,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:48,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash -885091814, now seen corresponding path program 1 times [2023-09-01 06:35:48,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:48,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687348043] [2023-09-01 06:35:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:49,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:49,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:49,058 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:49,059 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:35:49,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:35:49,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:35:49,062 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:49,064 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:35:49,065 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:49,065 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:35:49,116 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:35:49,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 387 transitions, 822 flow [2023-09-01 06:35:49,471 INFO L130 PetriNetUnfolder]: 197/1311 cut-off events. [2023-09-01 06:35:49,472 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-09-01 06:35:49,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 1311 events. 197/1311 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8239 event pairs, 1 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 778. Up to 32 conditions per place. [2023-09-01 06:35:49,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 387 transitions, 822 flow [2023-09-01 06:35:49,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 387 transitions, 822 flow [2023-09-01 06:35:49,512 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:49,512 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 387 transitions, 822 flow [2023-09-01 06:35:49,512 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 387 transitions, 822 flow [2023-09-01 06:35:49,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 387 transitions, 822 flow [2023-09-01 06:35:49,840 INFO L130 PetriNetUnfolder]: 197/1311 cut-off events. [2023-09-01 06:35:49,841 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-09-01 06:35:49,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 1311 events. 197/1311 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8239 event pairs, 1 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 778. Up to 32 conditions per place. [2023-09-01 06:35:49,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 91120 [2023-09-01 06:35:55,909 INFO L134 LiptonReduction]: Checked pairs total: 194439 [2023-09-01 06:35:55,909 INFO L136 LiptonReduction]: Total number of compositions: 313 [2023-09-01 06:35:55,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:55,912 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;@671201c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:55,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:35:55,923 INFO L130 PetriNetUnfolder]: 28/133 cut-off events. [2023-09-01 06:35:55,923 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 06:35:55,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:55,923 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:35:55,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:55,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1533937230, now seen corresponding path program 1 times [2023-09-01 06:35:55,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:55,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929575695] [2023-09-01 06:35:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:55,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:55,961 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:56,014 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:56,020 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:56,021 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:35:56,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:35:56,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:35:56,022 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:56,022 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:35:56,023 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:56,023 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:35:56,090 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:35:56,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 454 places, 529 transitions, 1136 flow [2023-09-01 06:35:57,163 INFO L130 PetriNetUnfolder]: 664/3771 cut-off events. [2023-09-01 06:35:57,164 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2023-09-01 06:35:57,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4222 conditions, 3771 events. 664/3771 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 29349 event pairs, 52 based on Foata normal form. 0/2953 useless extension candidates. Maximal degree in co-relation 2374. Up to 192 conditions per place. [2023-09-01 06:35:57,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 454 places, 529 transitions, 1136 flow [2023-09-01 06:35:57,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 454 places, 529 transitions, 1136 flow [2023-09-01 06:35:57,320 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:57,321 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 454 places, 529 transitions, 1136 flow [2023-09-01 06:35:57,321 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 454 places, 529 transitions, 1136 flow [2023-09-01 06:35:57,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 454 places, 529 transitions, 1136 flow [2023-09-01 06:35:58,466 INFO L130 PetriNetUnfolder]: 664/3771 cut-off events. [2023-09-01 06:35:58,466 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2023-09-01 06:35:58,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4222 conditions, 3771 events. 664/3771 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 29349 event pairs, 52 based on Foata normal form. 0/2953 useless extension candidates. Maximal degree in co-relation 2374. Up to 192 conditions per place. [2023-09-01 06:35:58,850 INFO L119 LiptonReduction]: Number of co-enabled transitions 196248 [2023-09-01 06:36:05,668 INFO L134 LiptonReduction]: Checked pairs total: 405537 [2023-09-01 06:36:05,668 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-09-01 06:36:05,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:36:05,671 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;@671201c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:36:05,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:36:05,693 INFO L130 PetriNetUnfolder]: 66/284 cut-off events. [2023-09-01 06:36:05,694 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-09-01 06:36:05,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:36:05,694 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:36:05,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:36:05,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:36:05,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2146191079, now seen corresponding path program 1 times [2023-09-01 06:36:05,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:36:05,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148753286] [2023-09-01 06:36:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:36:05,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:36:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:36:05,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:36:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:36:05,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:36:05,759 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:36:05,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:36:05,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:36:05,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:36:05,760 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:36:05,761 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:36:05,761 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:36:05,761 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:36:05,830 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 06:36:05,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 572 places, 671 transitions, 1454 flow [2023-09-01 06:36:10,040 INFO L130 PetriNetUnfolder]: 2647/12353 cut-off events. [2023-09-01 06:36:10,041 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-09-01 06:36:10,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14518 conditions, 12353 events. 2647/12353 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 118005 event pairs, 540 based on Foata normal form. 0/9817 useless extension candidates. Maximal degree in co-relation 7647. Up to 1024 conditions per place. [2023-09-01 06:36:10,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 572 places, 671 transitions, 1454 flow [2023-09-01 06:36:10,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 572 places, 671 transitions, 1454 flow [2023-09-01 06:36:10,580 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:36:10,581 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 572 places, 671 transitions, 1454 flow [2023-09-01 06:36:10,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 572 places, 671 transitions, 1454 flow [2023-09-01 06:36:10,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 572 places, 671 transitions, 1454 flow [2023-09-01 06:36:14,158 INFO L130 PetriNetUnfolder]: 2647/12353 cut-off events. [2023-09-01 06:36:14,158 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-09-01 06:36:14,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14518 conditions, 12353 events. 2647/12353 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 118005 event pairs, 540 based on Foata normal form. 0/9817 useless extension candidates. Maximal degree in co-relation 7647. Up to 1024 conditions per place. [2023-09-01 06:36:15,699 INFO L119 LiptonReduction]: Number of co-enabled transitions 341088 [2023-09-01 06:36:23,565 INFO L134 LiptonReduction]: Checked pairs total: 725542 [2023-09-01 06:36:23,566 INFO L136 LiptonReduction]: Total number of compositions: 528 [2023-09-01 06:36:23,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:36:23,574 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;@671201c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:36:23,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:36:23,607 INFO L130 PetriNetUnfolder]: 127/522 cut-off events. [2023-09-01 06:36:23,607 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-09-01 06:36:23,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:36:23,608 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:36:23,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:36:23,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:36:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash -645477556, now seen corresponding path program 1 times [2023-09-01 06:36:23,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:36:23,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291044130] [2023-09-01 06:36:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:36:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:36:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:36:23,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:36:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:36:23,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:36:23,674 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:36:23,674 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:36:23,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:36:23,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:36:23,675 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:36:23,676 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:36:23,676 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:36:23,676 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:36:23,743 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 06:36:23,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 690 places, 813 transitions, 1776 flow [2023-09-01 06:36:41,967 INFO L130 PetriNetUnfolder]: 11762/46065 cut-off events. [2023-09-01 06:36:41,968 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2023-09-01 06:36:45,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56491 conditions, 46065 events. 11762/46065 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 539526 event pairs, 3676 based on Foata normal form. 0/37163 useless extension candidates. Maximal degree in co-relation 28276. Up to 5120 conditions per place. [2023-09-01 06:36:45,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 690 places, 813 transitions, 1776 flow [2023-09-01 06:36:46,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 690 places, 813 transitions, 1776 flow [2023-09-01 06:36:46,682 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:36:46,682 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 690 places, 813 transitions, 1776 flow [2023-09-01 06:36:46,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 690 places, 813 transitions, 1776 flow [2023-09-01 06:36:46,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 690 places, 813 transitions, 1776 flow [2023-09-01 06:37:04,197 INFO L130 PetriNetUnfolder]: 11762/46065 cut-off events. [2023-09-01 06:37:04,197 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2023-09-01 06:37:07,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56491 conditions, 46065 events. 11762/46065 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 539526 event pairs, 3676 based on Foata normal form. 0/37163 useless extension candidates. Maximal degree in co-relation 28276. Up to 5120 conditions per place. [2023-09-01 06:37:12,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 525640 [2023-09-01 06:37:21,543 INFO L134 LiptonReduction]: Checked pairs total: 1136003 [2023-09-01 06:37:21,544 INFO L136 LiptonReduction]: Total number of compositions: 641 [2023-09-01 06:37:21,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:21,547 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;@671201c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:21,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 06:37:21,630 INFO L130 PetriNetUnfolder]: 219/881 cut-off events. [2023-09-01 06:37:21,630 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-09-01 06:37:21,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:21,631 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:37:21,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:21,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:21,631 INFO L85 PathProgramCache]: Analyzing trace with hash 530009431, now seen corresponding path program 1 times [2023-09-01 06:37:21,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:21,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815302493] [2023-09-01 06:37:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:21,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:21,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:21,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:21,726 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:21,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 06:37:21,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 06:37:21,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:37:21,727 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:21,728 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 06:37:21,728 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:21,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:37:21,808 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 06:37:21,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 808 places, 955 transitions, 2102 flow [2023-09-01 06:39:06,080 INFO L130 PetriNetUnfolder]: 53929/184395 cut-off events. [2023-09-01 06:39:06,081 INFO L131 PetriNetUnfolder]: For 49552/49552 co-relation queries the response was YES. [2023-09-01 06:39:30,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233824 conditions, 184395 events. 53929/184395 cut-off events. For 49552/49552 co-relation queries the response was YES. Maximal size of possible extension queue 2104. Compared 2550370 event pairs, 24930 based on Foata normal form. 0/150655 useless extension candidates. Maximal degree in co-relation 114376. Up to 24576 conditions per place. [2023-09-01 06:39:30,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 808 places, 955 transitions, 2102 flow [2023-09-01 06:39:41,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 808 places, 955 transitions, 2102 flow [2023-09-01 06:39:41,630 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:39:41,630 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 808 places, 955 transitions, 2102 flow [2023-09-01 06:39:41,630 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 808 places, 955 transitions, 2102 flow [2023-09-01 06:39:41,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 808 places, 955 transitions, 2102 flow