./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.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 AFTER --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_09-ptrmunge_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:46:07,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:46:07,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:46:07,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:46:07,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:46:07,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:46:07,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:46:07,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:46:07,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:46:07,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:46:07,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:46:07,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:46:07,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:46:07,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:46:07,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:46:07,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:46:07,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:46:07,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:46:07,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:46:07,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:46:07,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:46:07,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:46:07,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:46:07,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:46:07,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:46:07,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:46:07,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:46:07,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:46:07,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:46:07,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:46:07,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:46:07,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:46:07,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:46:07,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:46:07,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:46:07,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:46:07,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:46:07,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:46:07,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:46:07,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:46:07,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:46:07,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:46:07,544 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:46:07,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:46:07,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:46:07,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:46:07,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:46:07,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:46:07,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:46:07,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:46:07,547 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:46:07,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:46:07,548 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:46:07,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:46:07,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:46:07,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:46:07,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:46:07,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:46:07,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:46:07,549 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:46:07,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:46:07,550 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:46:07,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:46:07,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:46:07,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:46:07,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:46:07,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:46:07,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:46:07,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:46:07,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:46:07,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:46:07,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:46:07,552 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:46:07,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:46:07,552 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:46:07,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:46:07,552 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:46:07,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:46:07,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:46:07,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:46:07,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:46:07,884 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:46:07,884 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:46:07,885 INFO L432 ainManager$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 [2023-08-30 17:46:09,138 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:46:09,395 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:46:09,395 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-30 17:46:09,405 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dbbf7671/c72988e365be4dd4a0564c13356c4166/FLAG3e4f10a3f [2023-08-30 17:46:09,419 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dbbf7671/c72988e365be4dd4a0564c13356c4166 [2023-08-30 17:46:09,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:46:09,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:46:09,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:46:09,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:46:09,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:46:09,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:09,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23db3c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09, skipping insertion in model container [2023-08-30 17:46:09,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:09,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:46:09,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:46:09,755 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] [2023-08-30 17:46:09,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:46:09,801 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:46:09,853 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] [2023-08-30 17:46:09,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:46:09,911 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:46:09,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09 WrapperNode [2023-08-30 17:46:09,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:46:09,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:46:09,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:46:09,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:46:09,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:09,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:09,983 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 218 [2023-08-30 17:46:09,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:46:09,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:46:09,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:46:09,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:46:09,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:09,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:10,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:10,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:10,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:10,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:10,022 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:10,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:10,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:46:10,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:46:10,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:46:10,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:46:10,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (1/1) ... [2023-08-30 17:46:10,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:46:10,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:46:10,062 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) [2023-08-30 17:46:10,065 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 [2023-08-30 17:46:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:46:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 17:46:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 17:46:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:46:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 17:46:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:46:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:46:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 17:46:10,095 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 17:46:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:46:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:46:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:46:10,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:46:10,097 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:46:10,245 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:46:10,247 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:46:10,528 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:46:10,536 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:46:10,537 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-30 17:46:10,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:46:10 BoogieIcfgContainer [2023-08-30 17:46:10,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:46:10,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:46:10,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:46:10,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:46:10,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:46:09" (1/3) ... [2023-08-30 17:46:10,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211937d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:46:10, skipping insertion in model container [2023-08-30 17:46:10,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:09" (2/3) ... [2023-08-30 17:46:10,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211937d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:46:10, skipping insertion in model container [2023-08-30 17:46:10,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:46:10" (3/3) ... [2023-08-30 17:46:10,552 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-08-30 17:46:10,558 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:46:10,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:46:10,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 17:46:10,564 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:46:10,655 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 17:46:10,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:10,786 INFO L130 PetriNetUnfolder]: 58/380 cut-off events. [2023-08-30 17:46:10,789 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-08-30 17:46:10,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 380 events. 58/380 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1612 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-08-30 17:46:10,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:10,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:10,815 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:46:10,823 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:10,826 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:10,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:10,886 INFO L130 PetriNetUnfolder]: 58/380 cut-off events. [2023-08-30 17:46:10,886 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-08-30 17:46:10,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 380 events. 58/380 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1612 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-08-30 17:46:10,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 18788 [2023-08-30 17:46:14,744 INFO L134 LiptonReduction]: Checked pairs total: 31275 [2023-08-30 17:46:14,744 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-08-30 17:46:14,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:46:14,762 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;@6c8ae067, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:46:14,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 17:46:14,767 INFO L130 PetriNetUnfolder]: 4/40 cut-off events. [2023-08-30 17:46:14,768 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:46:14,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:46:14,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:46:14,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-30 17:46:14,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:46:14,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1082931895, now seen corresponding path program 1 times [2023-08-30 17:46:14,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:46:14,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46631430] [2023-08-30 17:46:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:46:14,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:46:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:46:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:46:15,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:46:15,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46631430] [2023-08-30 17:46:15,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46631430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:46:15,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:46:15,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:46:15,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735912341] [2023-08-30 17:46:15,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:46:15,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 17:46:15,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:46:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 17:46:15,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 17:46:15,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 375 [2023-08-30 17:46:15,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 79 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:15,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:46:15,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 375 [2023-08-30 17:46:15,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:46:16,158 INFO L130 PetriNetUnfolder]: 4159/7183 cut-off events. [2023-08-30 17:46:16,160 INFO L131 PetriNetUnfolder]: For 178/178 co-relation queries the response was YES. [2023-08-30 17:46:16,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13834 conditions, 7183 events. 4159/7183 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 48668 event pairs, 2761 based on Foata normal form. 1019/6677 useless extension candidates. Maximal degree in co-relation 12598. Up to 5191 conditions per place. [2023-08-30 17:46:16,189 INFO L137 encePairwiseOnDemand]: 345/375 looper letters, 74 selfloop transitions, 8 changer transitions 42/137 dead transitions. [2023-08-30 17:46:16,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 137 transitions, 565 flow [2023-08-30 17:46:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 17:46:16,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 17:46:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1352 transitions. [2023-08-30 17:46:16,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150476190476191 [2023-08-30 17:46:16,211 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1352 transitions. [2023-08-30 17:46:16,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1352 transitions. [2023-08-30 17:46:16,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:46:16,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1352 transitions. [2023-08-30 17:46:16,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 193.14285714285714) internal successors, (1352), 7 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:16,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 375.0) internal successors, (3000), 8 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:16,232 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 375.0) internal successors, (3000), 8 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:16,233 INFO L175 Difference]: Start difference. First operand has 58 places, 79 transitions, 180 flow. Second operand 7 states and 1352 transitions. [2023-08-30 17:46:16,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 137 transitions, 565 flow [2023-08-30 17:46:16,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 137 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:46:16,243 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 216 flow [2023-08-30 17:46:16,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2023-08-30 17:46:16,248 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2023-08-30 17:46:16,248 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 216 flow [2023-08-30 17:46:16,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:16,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:46:16,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:46:16,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:46:16,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-30 17:46:16,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:46:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash -221684610, now seen corresponding path program 1 times [2023-08-30 17:46:16,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:46:16,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491228854] [2023-08-30 17:46:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:46:16,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:46:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:46:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:46:16,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:46:16,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491228854] [2023-08-30 17:46:16,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491228854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:46:16,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:46:16,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:46:16,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291975909] [2023-08-30 17:46:16,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:46:16,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:46:16,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:46:16,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:46:16,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:46:16,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 375 [2023-08-30 17:46:16,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:16,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:46:16,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 375 [2023-08-30 17:46:16,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:46:16,970 INFO L130 PetriNetUnfolder]: 4058/7126 cut-off events. [2023-08-30 17:46:16,971 INFO L131 PetriNetUnfolder]: For 3188/3188 co-relation queries the response was YES. [2023-08-30 17:46:16,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15960 conditions, 7126 events. 4058/7126 cut-off events. For 3188/3188 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 49156 event pairs, 3302 based on Foata normal form. 1/6302 useless extension candidates. Maximal degree in co-relation 15470. Up to 6273 conditions per place. [2023-08-30 17:46:17,000 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 64 selfloop transitions, 2 changer transitions 1/80 dead transitions. [2023-08-30 17:46:17,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 392 flow [2023-08-30 17:46:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:46:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:46:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-30 17:46:17,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262222222222223 [2023-08-30 17:46:17,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-30 17:46:17,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-30 17:46:17,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:46:17,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-30 17:46:17,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:17,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:17,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:17,010 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 216 flow. Second operand 3 states and 592 transitions. [2023-08-30 17:46:17,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 392 flow [2023-08-30 17:46:17,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 80 transitions, 386 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 17:46:17,026 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 218 flow [2023-08-30 17:46:17,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2023-08-30 17:46:17,027 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-08-30 17:46:17,027 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 218 flow [2023-08-30 17:46:17,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:17,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:46:17,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:46:17,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:46:17,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-30 17:46:17,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:46:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1321145184, now seen corresponding path program 1 times [2023-08-30 17:46:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:46:17,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721058120] [2023-08-30 17:46:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:46:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:46:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:46:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:46:17,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:46:17,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721058120] [2023-08-30 17:46:17,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721058120] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:46:17,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653010176] [2023-08-30 17:46:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:46:17,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:46:17,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:46:17,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:46:17,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 17:46:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:46:17,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 17:46:17,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:46:17,476 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 17:46:17,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 17:46:17,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 17:46:17,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 17:46:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:46:17,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:46:17,719 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_40 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_40) |c_~#global1~0.base|) |c_~#global1~0.offset|) 0)) is different from false [2023-08-30 17:46:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 17:46:17,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653010176] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:46:17,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:46:17,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-30 17:46:17,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835448325] [2023-08-30 17:46:17,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:46:17,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 17:46:17,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:46:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 17:46:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=47, Unknown=3, NotChecked=14, Total=90 [2023-08-30 17:46:17,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 375 [2023-08-30 17:46:17,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 218 flow. Second operand has 10 states, 10 states have (on average 142.3) internal successors, (1423), 10 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:17,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:46:17,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 375 [2023-08-30 17:46:17,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:46:18,645 INFO L130 PetriNetUnfolder]: 4528/7551 cut-off events. [2023-08-30 17:46:18,646 INFO L131 PetriNetUnfolder]: For 2434/2436 co-relation queries the response was YES. [2023-08-30 17:46:18,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17051 conditions, 7551 events. 4528/7551 cut-off events. For 2434/2436 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 49334 event pairs, 2537 based on Foata normal form. 1/6671 useless extension candidates. Maximal degree in co-relation 16926. Up to 5754 conditions per place. [2023-08-30 17:46:18,676 INFO L137 encePairwiseOnDemand]: 369/375 looper letters, 74 selfloop transitions, 7 changer transitions 25/116 dead transitions. [2023-08-30 17:46:18,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 116 transitions, 565 flow [2023-08-30 17:46:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 17:46:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 17:46:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 806 transitions. [2023-08-30 17:46:18,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298666666666667 [2023-08-30 17:46:18,679 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 806 transitions. [2023-08-30 17:46:18,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 806 transitions. [2023-08-30 17:46:18,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:46:18,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 806 transitions. [2023-08-30 17:46:18,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.2) internal successors, (806), 5 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:18,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:18,687 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:18,687 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 218 flow. Second operand 5 states and 806 transitions. [2023-08-30 17:46:18,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 116 transitions, 565 flow [2023-08-30 17:46:18,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 116 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:46:18,695 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 223 flow [2023-08-30 17:46:18,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-08-30 17:46:18,696 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2023-08-30 17:46:18,696 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 223 flow [2023-08-30 17:46:18,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 142.3) internal successors, (1423), 10 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:18,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:46:18,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:46:18,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 17:46:18,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:46:18,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-30 17:46:18,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:46:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1253238702, now seen corresponding path program 1 times [2023-08-30 17:46:18,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:46:18,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542506414] [2023-08-30 17:46:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:46:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:46:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:46:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:46:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:46:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542506414] [2023-08-30 17:46:18,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542506414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:46:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189349930] [2023-08-30 17:46:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:46:18,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:46:18,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:46:18,943 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:46:18,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 17:46:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:46:19,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 17:46:19,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:46:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:46:19,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:46:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:46:19,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189349930] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:46:19,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:46:19,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 17:46:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458223339] [2023-08-30 17:46:19,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:46:19,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:46:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:46:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:46:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:46:19,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 375 [2023-08-30 17:46:19,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:19,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:46:19,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 375 [2023-08-30 17:46:19,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:46:19,205 INFO L130 PetriNetUnfolder]: 20/77 cut-off events. [2023-08-30 17:46:19,205 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-08-30 17:46:19,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 77 events. 20/77 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 192 event pairs, 5 based on Foata normal form. 15/89 useless extension candidates. Maximal degree in co-relation 199. Up to 50 conditions per place. [2023-08-30 17:46:19,206 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-30 17:46:19,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 183 flow [2023-08-30 17:46:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:46:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:46:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 736 transitions. [2023-08-30 17:46:19,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49066666666666664 [2023-08-30 17:46:19,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 736 transitions. [2023-08-30 17:46:19,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 736 transitions. [2023-08-30 17:46:19,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:46:19,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 736 transitions. [2023-08-30 17:46:19,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:19,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:19,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:19,216 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 223 flow. Second operand 4 states and 736 transitions. [2023-08-30 17:46:19,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 183 flow [2023-08-30 17:46:19,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 143 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-08-30 17:46:19,218 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-30 17:46:19,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-30 17:46:19,219 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -29 predicate places. [2023-08-30 17:46:19,220 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-30 17:46:19,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:19,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 17:46:19,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-30 17:46:19,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-30 17:46:19,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-30 17:46:19,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 17:46:19,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 17:46:19,429 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 17:46:19,431 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 17:46:19,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:19,472 INFO L130 PetriNetUnfolder]: 58/380 cut-off events. [2023-08-30 17:46:19,472 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-08-30 17:46:19,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 380 events. 58/380 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1612 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-08-30 17:46:19,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:19,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:19,477 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:46:19,478 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:19,478 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:19,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 215 transitions, 452 flow [2023-08-30 17:46:19,510 INFO L130 PetriNetUnfolder]: 58/380 cut-off events. [2023-08-30 17:46:19,510 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-08-30 17:46:19,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 380 events. 58/380 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1612 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-08-30 17:46:19,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 18788 [2023-08-30 17:46:23,314 INFO L134 LiptonReduction]: Checked pairs total: 31330 [2023-08-30 17:46:23,314 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-08-30 17:46:23,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 17:46:23,317 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;@6c8ae067, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:46:23,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 17:46:23,319 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-08-30 17:46:23,319 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:46:23,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:46:23,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 17:46:23,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 17:46:23,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:46:23,320 INFO L85 PathProgramCache]: Analyzing trace with hash 338306095, now seen corresponding path program 1 times [2023-08-30 17:46:23,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:46:23,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36110427] [2023-08-30 17:46:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:46:23,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:46:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 17:46:23,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 17:46:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 17:46:23,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 17:46:23,368 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 17:46:23,368 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-30 17:46:23,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-30 17:46:23,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 17:46:23,369 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 17:46:23,370 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-30 17:46:23,372 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 17:46:23,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 17:46:23,444 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-30 17:46:23,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 343 transitions, 734 flow [2023-08-30 17:46:23,594 INFO L130 PetriNetUnfolder]: 197/1103 cut-off events. [2023-08-30 17:46:23,594 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-08-30 17:46:23,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 1103 events. 197/1103 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6638 event pairs, 1 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 671. Up to 32 conditions per place. [2023-08-30 17:46:23,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 343 transitions, 734 flow [2023-08-30 17:46:23,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 343 transitions, 734 flow [2023-08-30 17:46:23,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:46:23,628 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 343 transitions, 734 flow [2023-08-30 17:46:23,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 343 transitions, 734 flow [2023-08-30 17:46:23,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 343 transitions, 734 flow [2023-08-30 17:46:23,770 INFO L130 PetriNetUnfolder]: 197/1103 cut-off events. [2023-08-30 17:46:23,770 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-08-30 17:46:23,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 1103 events. 197/1103 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6638 event pairs, 1 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 671. Up to 32 conditions per place. [2023-08-30 17:46:23,840 INFO L119 LiptonReduction]: Number of co-enabled transitions 69784 [2023-08-30 17:46:28,156 INFO L134 LiptonReduction]: Checked pairs total: 136195 [2023-08-30 17:46:28,156 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-30 17:46:28,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:46:28,158 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;@6c8ae067, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:46:28,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 17:46:28,162 INFO L130 PetriNetUnfolder]: 7/41 cut-off events. [2023-08-30 17:46:28,162 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:46:28,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:46:28,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:46:28,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 17:46:28,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:46:28,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1521823553, now seen corresponding path program 1 times [2023-08-30 17:46:28,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:46:28,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297639352] [2023-08-30 17:46:28,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:46:28,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:46:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:46:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:46:28,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:46:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297639352] [2023-08-30 17:46:28,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297639352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:46:28,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:46:28,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:46:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353668397] [2023-08-30 17:46:28,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:46:28,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 17:46:28,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:46:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 17:46:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 17:46:28,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 597 [2023-08-30 17:46:28,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 145 transitions, 338 flow. Second operand has 5 states, 5 states have (on average 263.4) internal successors, (1317), 5 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:46:28,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:46:28,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 597 [2023-08-30 17:46:28,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand