./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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_72-funloop_hard_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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:19:04,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:19:04,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:19:04,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:19:04,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:19:04,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:19:04,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:19:04,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:19:04,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:19:04,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:19:04,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:19:04,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:19:04,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:19:04,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:19:04,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:19:04,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:19:04,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:19:04,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:19:04,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:19:04,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:19:04,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:19:04,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:19:04,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:19:04,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:19:04,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:19:04,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:19:04,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:19:04,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:19:04,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:19:04,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:19:04,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:19:04,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:19:04,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:19:04,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:19:04,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:19:04,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:19:04,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:19:04,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:19:04,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:19:04,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:19:04,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:19:04,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:19:04,446 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:19:04,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:19:04,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:19:04,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:19:04,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:19:04,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:19:04,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:19:04,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:19:04,449 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:19:04,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:19:04,450 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:19:04,450 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:19:04,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:19:04,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:19:04,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:19:04,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:19:04,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:19:04,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:19:04,451 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:19:04,451 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:19:04,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:19:04,451 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:19:04,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:19:04,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:19:04,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:19:04,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:19:04,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:19:04,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:19:04,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:19:04,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:19:04,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:19:04,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:19:04,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:19:04,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:19:04,453 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:19:04,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:19:04,453 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:19:04,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:19:04,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:19:04,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:19:04,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:19:04,722 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:19:04,723 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:19:04,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-08-30 14:19:05,646 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:19:05,851 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:19:05,855 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-08-30 14:19:05,871 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b49aa2584/57db6c56a5004c979e17270a4439b314/FLAG9d97f264f [2023-08-30 14:19:05,882 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b49aa2584/57db6c56a5004c979e17270a4439b314 [2023-08-30 14:19:05,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:19:05,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:19:05,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:19:05,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:19:05,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:19:05,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:19:05" (1/1) ... [2023-08-30 14:19:05,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619f9173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:05, skipping insertion in model container [2023-08-30 14:19:05,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:19:05" (1/1) ... [2023-08-30 14:19:05,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:19:05,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:19:06,192 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_72-funloop_hard_racing.i[41323,41336] [2023-08-30 14:19:06,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:19:06,233 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:19:06,266 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_72-funloop_hard_racing.i[41323,41336] [2023-08-30 14:19:06,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:19:06,332 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:19:06,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06 WrapperNode [2023-08-30 14:19:06,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:19:06,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:19:06,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:19:06,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:19:06,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,385 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 272 [2023-08-30 14:19:06,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:19:06,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:19:06,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:19:06,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:19:06,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,409 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:19:06,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:19:06,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:19:06,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:19:06,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (1/1) ... [2023-08-30 14:19:06,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:19:06,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:06,447 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 14:19:06,453 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 14:19:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:19:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:19:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:19:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:19:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:19:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:19:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:19:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:19:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:19:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:19:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:19:06,471 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 14:19:06,576 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:19:06,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:19:06,916 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:19:06,922 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:19:06,922 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-08-30 14:19:06,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:19:06 BoogieIcfgContainer [2023-08-30 14:19:06,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:19:06,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:19:06,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:19:06,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:19:06,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:19:05" (1/3) ... [2023-08-30 14:19:06,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1aa823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:19:06, skipping insertion in model container [2023-08-30 14:19:06,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:06" (2/3) ... [2023-08-30 14:19:06,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1aa823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:19:06, skipping insertion in model container [2023-08-30 14:19:06,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:19:06" (3/3) ... [2023-08-30 14:19:06,929 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2023-08-30 14:19:06,934 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:19:06,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:19:06,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-30 14:19:06,940 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:19:07,014 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:19:07,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 14:19:07,138 INFO L130 PetriNetUnfolder]: 73/440 cut-off events. [2023-08-30 14:19:07,138 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:19:07,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 440 events. 73/440 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2094 event pairs, 0 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 14:19:07,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 14:19:07,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 284 transitions, 576 flow [2023-08-30 14:19:07,160 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:19:07,174 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 284 transitions, 576 flow [2023-08-30 14:19:07,175 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 284 transitions, 576 flow [2023-08-30 14:19:07,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 284 transitions, 576 flow [2023-08-30 14:19:07,225 INFO L130 PetriNetUnfolder]: 72/437 cut-off events. [2023-08-30 14:19:07,225 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:19:07,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 437 events. 72/437 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2079 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 14:19:07,237 INFO L119 LiptonReduction]: Number of co-enabled transitions 26080 [2023-08-30 14:19:09,986 INFO L134 LiptonReduction]: Checked pairs total: 39972 [2023-08-30 14:19:09,987 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-08-30 14:19:09,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:19:09,999 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;@2b58fe3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:19:10,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-30 14:19:10,001 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 14:19:10,001 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:19:10,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:10,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:19:10,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:10,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash 35433, now seen corresponding path program 1 times [2023-08-30 14:19:10,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:10,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591306052] [2023-08-30 14:19:10,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:10,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:10,141 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 14:19:10,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:10,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591306052] [2023-08-30 14:19:10,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591306052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:10,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:10,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:19:10,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919668144] [2023-08-30 14:19:10,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:10,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:10,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:10,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 14:19:10,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 119 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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 14:19:10,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:10,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 14:19:10,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:10,405 INFO L130 PetriNetUnfolder]: 1055/2188 cut-off events. [2023-08-30 14:19:10,405 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:19:10,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 2188 events. 1055/2188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14595 event pairs, 903 based on Foata normal form. 289/1785 useless extension candidates. Maximal degree in co-relation 4065. Up to 1986 conditions per place. [2023-08-30 14:19:10,414 INFO L137 encePairwiseOnDemand]: 495/531 looper letters, 73 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 14:19:10,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 334 flow [2023-08-30 14:19:10,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2023-08-30 14:19:10,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210295040803515 [2023-08-30 14:19:10,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2023-08-30 14:19:10,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2023-08-30 14:19:10,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:10,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2023-08-30 14:19:10,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 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 14:19:10,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 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 14:19:10,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 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 14:19:10,446 INFO L175 Difference]: Start difference. First operand has 85 places, 119 transitions, 246 flow. Second operand 3 states and 830 transitions. [2023-08-30 14:19:10,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 334 flow [2023-08-30 14:19:10,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:19:10,451 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 196 flow [2023-08-30 14:19:10,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-30 14:19:10,455 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-08-30 14:19:10,455 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 196 flow [2023-08-30 14:19:10,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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 14:19:10,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:10,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:19:10,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:19:10,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:10,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1100841, now seen corresponding path program 1 times [2023-08-30 14:19:10,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:10,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075907792] [2023-08-30 14:19:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:10,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075907792] [2023-08-30 14:19:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075907792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:10,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:10,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386244320] [2023-08-30 14:19:10,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:10,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:10,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:10,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 14:19:10,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 14:19:10,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:10,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 14:19:10,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:10,657 INFO L130 PetriNetUnfolder]: 1055/2187 cut-off events. [2023-08-30 14:19:10,657 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:19:10,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4186 conditions, 2187 events. 1055/2187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14616 event pairs, 903 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 4174. Up to 1985 conditions per place. [2023-08-30 14:19:10,664 INFO L137 encePairwiseOnDemand]: 529/531 looper letters, 73 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-08-30 14:19:10,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 340 flow [2023-08-30 14:19:10,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 794 transitions. [2023-08-30 14:19:10,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49843063402385435 [2023-08-30 14:19:10,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 794 transitions. [2023-08-30 14:19:10,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 794 transitions. [2023-08-30 14:19:10,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:10,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 794 transitions. [2023-08-30 14:19:10,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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 14:19:10,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 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 14:19:10,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 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 14:19:10,671 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 196 flow. Second operand 3 states and 794 transitions. [2023-08-30 14:19:10,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 340 flow [2023-08-30 14:19:10,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 336 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:10,673 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 190 flow [2023-08-30 14:19:10,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2023-08-30 14:19:10,674 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-08-30 14:19:10,674 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 190 flow [2023-08-30 14:19:10,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 14:19:10,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:10,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:19:10,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:19:10,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:10,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:10,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1563346380, now seen corresponding path program 1 times [2023-08-30 14:19:10,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:10,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982728] [2023-08-30 14:19:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:10,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:10,733 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 14:19:10,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:10,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982728] [2023-08-30 14:19:10,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:10,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949692878] [2023-08-30 14:19:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:10,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:10,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:10,738 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 14:19:10,768 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 14:19:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:10,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:19:10,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:10,838 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 14:19:10,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:19:10,847 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 14:19:10,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949692878] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:19:10,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:19:10,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:19:10,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273714331] [2023-08-30 14:19:10,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:19:10,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:19:10,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:10,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:19:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:19:10,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 14:19:10,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 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 14:19:10,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:10,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 14:19:10,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:11,068 INFO L130 PetriNetUnfolder]: 1055/2190 cut-off events. [2023-08-30 14:19:11,068 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:19:11,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 2190 events. 1055/2190 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14611 event pairs, 903 based on Foata normal form. 0/1499 useless extension candidates. Maximal degree in co-relation 4185. Up to 1985 conditions per place. [2023-08-30 14:19:11,076 INFO L137 encePairwiseOnDemand]: 528/531 looper letters, 72 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-08-30 14:19:11,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 356 flow [2023-08-30 14:19:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:19:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:19:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1514 transitions. [2023-08-30 14:19:11,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47520401757689895 [2023-08-30 14:19:11,079 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1514 transitions. [2023-08-30 14:19:11,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1514 transitions. [2023-08-30 14:19:11,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:11,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1514 transitions. [2023-08-30 14:19:11,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 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 14:19:11,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 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 14:19:11,105 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 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 14:19:11,105 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 190 flow. Second operand 6 states and 1514 transitions. [2023-08-30 14:19:11,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 356 flow [2023-08-30 14:19:11,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:11,109 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 225 flow [2023-08-30 14:19:11,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2023-08-30 14:19:11,110 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-08-30 14:19:11,110 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 225 flow [2023-08-30 14:19:11,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 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 14:19:11,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:11,111 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 14:19:11,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:19:11,320 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 14:19:11,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:11,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:11,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1271227380, now seen corresponding path program 2 times [2023-08-30 14:19:11,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:11,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952078216] [2023-08-30 14:19:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:11,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:19:11,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:11,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952078216] [2023-08-30 14:19:11,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952078216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:11,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:11,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:11,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637908964] [2023-08-30 14:19:11,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:11,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:11,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:11,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:11,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 14:19:11,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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 14:19:11,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:11,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 14:19:11,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:11,575 INFO L130 PetriNetUnfolder]: 1010/2088 cut-off events. [2023-08-30 14:19:11,575 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:19:11,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 2088 events. 1010/2088 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14139 event pairs, 400 based on Foata normal form. 0/1479 useless extension candidates. Maximal degree in co-relation 3980. Up to 1836 conditions per place. [2023-08-30 14:19:11,582 INFO L137 encePairwiseOnDemand]: 526/531 looper letters, 96 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-30 14:19:11,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 463 flow [2023-08-30 14:19:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 817 transitions. [2023-08-30 14:19:11,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128688010043942 [2023-08-30 14:19:11,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 817 transitions. [2023-08-30 14:19:11,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 817 transitions. [2023-08-30 14:19:11,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:11,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 817 transitions. [2023-08-30 14:19:11,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 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 14:19:11,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 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 14:19:11,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 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 14:19:11,589 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 225 flow. Second operand 3 states and 817 transitions. [2023-08-30 14:19:11,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 463 flow [2023-08-30 14:19:11,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 449 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:11,591 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 215 flow [2023-08-30 14:19:11,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-08-30 14:19:11,592 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-08-30 14:19:11,592 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 215 flow [2023-08-30 14:19:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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 14:19:11,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:11,593 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 14:19:11,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:19:11,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:11,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:11,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1878863073, now seen corresponding path program 1 times [2023-08-30 14:19:11,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:11,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953965279] [2023-08-30 14:19:11,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:11,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:19:11,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953965279] [2023-08-30 14:19:11,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953965279] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:11,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426502740] [2023-08-30 14:19:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:11,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:11,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:11,650 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 14:19:11,652 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 14:19:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:11,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:19:11,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:19:11,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:19:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:19:11,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426502740] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:19:11,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:19:11,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:19:11,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497834517] [2023-08-30 14:19:11,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:19:11,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:19:11,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:11,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:19:11,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:19:11,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 14:19:11,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 215 flow. Second operand has 13 states, 13 states have (on average 240.30769230769232) internal successors, (3124), 13 states have internal predecessors, (3124), 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 14:19:11,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:11,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 14:19:11,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:11,973 INFO L130 PetriNetUnfolder]: 1010/2064 cut-off events. [2023-08-30 14:19:11,973 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-08-30 14:19:11,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 2064 events. 1010/2064 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13469 event pairs, 861 based on Foata normal form. 6/1475 useless extension candidates. Maximal degree in co-relation 4021. Up to 1857 conditions per place. [2023-08-30 14:19:11,981 INFO L137 encePairwiseOnDemand]: 528/531 looper letters, 70 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2023-08-30 14:19:11,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 413 flow [2023-08-30 14:19:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:19:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:19:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2955 transitions. [2023-08-30 14:19:11,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637476459510358 [2023-08-30 14:19:11,987 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2955 transitions. [2023-08-30 14:19:11,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2955 transitions. [2023-08-30 14:19:11,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:11,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2955 transitions. [2023-08-30 14:19:11,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 246.25) internal successors, (2955), 12 states have internal predecessors, (2955), 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 14:19:11,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 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 14:19:11,998 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 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 14:19:11,999 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 215 flow. Second operand 12 states and 2955 transitions. [2023-08-30 14:19:11,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 413 flow [2023-08-30 14:19:12,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 94 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:19:12,001 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 295 flow [2023-08-30 14:19:12,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=295, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2023-08-30 14:19:12,002 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 24 predicate places. [2023-08-30 14:19:12,002 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 295 flow [2023-08-30 14:19:12,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.30769230769232) internal successors, (3124), 13 states have internal predecessors, (3124), 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 14:19:12,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:12,003 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:19:12,010 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 14:19:12,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:12,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:12,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:12,213 INFO L85 PathProgramCache]: Analyzing trace with hash 468419809, now seen corresponding path program 2 times [2023-08-30 14:19:12,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:12,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643327367] [2023-08-30 14:19:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:12,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:19:12,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:19:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:19:12,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:19:12,261 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:19:12,262 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-30 14:19:12,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-30 14:19:12,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-30 14:19:12,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-08-30 14:19:12,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-30 14:19:12,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-30 14:19:12,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-08-30 14:19:12,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-08-30 14:19:12,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-30 14:19:12,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-08-30 14:19:12,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-08-30 14:19:12,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-30 14:19:12,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-30 14:19:12,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-30 14:19:12,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-30 14:19:12,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-08-30 14:19:12,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-30 14:19:12,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-08-30 14:19:12,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-30 14:19:12,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-30 14:19:12,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-30 14:19:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-30 14:19:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-30 14:19:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-30 14:19:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-30 14:19:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-30 14:19:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-08-30 14:19:12,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-08-30 14:19:12,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-08-30 14:19:12,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:19:12,272 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-30 14:19:12,274 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:19:12,274 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:19:12,304 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:19:12,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:12,357 INFO L130 PetriNetUnfolder]: 118/711 cut-off events. [2023-08-30 14:19:12,357 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:19:12,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 711 events. 118/711 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3792 event pairs, 0 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2023-08-30 14:19:12,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:12,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:12,366 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:19:12,366 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:12,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:12,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:12,409 INFO L130 PetriNetUnfolder]: 118/711 cut-off events. [2023-08-30 14:19:12,410 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:19:12,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 711 events. 118/711 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3792 event pairs, 0 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2023-08-30 14:19:12,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 68000 [2023-08-30 14:19:15,452 INFO L134 LiptonReduction]: Checked pairs total: 120318 [2023-08-30 14:19:15,452 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-08-30 14:19:15,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:19:15,454 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;@2b58fe3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:19:15,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-30 14:19:15,455 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:19:15,455 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:19:15,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:15,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:19:15,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:15,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash 59469, now seen corresponding path program 1 times [2023-08-30 14:19:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:15,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739995751] [2023-08-30 14:19:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:15,469 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 14:19:15,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:15,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739995751] [2023-08-30 14:19:15,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739995751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:15,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:15,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:19:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744468398] [2023-08-30 14:19:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:15,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:15,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:15,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 14:19:15,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 161 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 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 14:19:15,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:15,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 14:19:15,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:19,181 INFO L130 PetriNetUnfolder]: 52323/79072 cut-off events. [2023-08-30 14:19:19,182 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 14:19:19,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154709 conditions, 79072 events. 52323/79072 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2607. Compared 612056 event pairs, 47170 based on Foata normal form. 9339/61849 useless extension candidates. Maximal degree in co-relation 72853. Up to 75496 conditions per place. [2023-08-30 14:19:19,505 INFO L137 encePairwiseOnDemand]: 623/670 looper letters, 101 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-08-30 14:19:19,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 462 flow [2023-08-30 14:19:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:19,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1070 transitions. [2023-08-30 14:19:19,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323383084577115 [2023-08-30 14:19:19,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1070 transitions. [2023-08-30 14:19:19,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1070 transitions. [2023-08-30 14:19:19,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:19,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1070 transitions. [2023-08-30 14:19:19,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.6666666666667) internal successors, (1070), 3 states have internal predecessors, (1070), 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 14:19:19,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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 14:19:19,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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 14:19:19,513 INFO L175 Difference]: Start difference. First operand has 114 places, 161 transitions, 340 flow. Second operand 3 states and 1070 transitions. [2023-08-30 14:19:19,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 462 flow [2023-08-30 14:19:19,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:19:19,517 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 268 flow [2023-08-30 14:19:19,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-08-30 14:19:19,518 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-08-30 14:19:19,518 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 268 flow [2023-08-30 14:19:19,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 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 14:19:19,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:19,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:19:19,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:19:19,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:19,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1847425, now seen corresponding path program 1 times [2023-08-30 14:19:19,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:19,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347443618] [2023-08-30 14:19:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:19,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:19,548 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 14:19:19,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:19,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347443618] [2023-08-30 14:19:19,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347443618] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:19,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934951526] [2023-08-30 14:19:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:19,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:19,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:19,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:19:19,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:19:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:19,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:19:19,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:19,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:19:19,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934951526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:19,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:19:19,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:19:19,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772257281] [2023-08-30 14:19:19,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:19,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:19:19,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:19,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:19:19,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:19:19,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 14:19:19,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 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 14:19:19,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:19,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 14:19:19,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:23,180 INFO L130 PetriNetUnfolder]: 52323/79071 cut-off events. [2023-08-30 14:19:23,180 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 14:19:23,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154714 conditions, 79071 events. 52323/79071 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2607. Compared 612156 event pairs, 47170 based on Foata normal form. 0/52510 useless extension candidates. Maximal degree in co-relation 154701. Up to 75494 conditions per place. [2023-08-30 14:19:23,664 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 100 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-08-30 14:19:23,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 118 transitions, 468 flow [2023-08-30 14:19:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:19:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:19:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1331 transitions. [2023-08-30 14:19:23,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966417910447761 [2023-08-30 14:19:23,681 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1331 transitions. [2023-08-30 14:19:23,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1331 transitions. [2023-08-30 14:19:23,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:23,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1331 transitions. [2023-08-30 14:19:23,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 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 14:19:23,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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 14:19:23,692 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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 14:19:23,692 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 268 flow. Second operand 4 states and 1331 transitions. [2023-08-30 14:19:23,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 118 transitions, 468 flow [2023-08-30 14:19:23,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 464 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:23,694 INFO L231 Difference]: Finished difference. Result has 117 places, 118 transitions, 264 flow [2023-08-30 14:19:23,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2023-08-30 14:19:23,695 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 3 predicate places. [2023-08-30 14:19:23,695 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 264 flow [2023-08-30 14:19:23,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 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 14:19:23,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:23,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:23,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:19:23,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:23,902 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:23,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:23,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1112431339, now seen corresponding path program 1 times [2023-08-30 14:19:23,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:23,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092529179] [2023-08-30 14:19:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:23,940 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 14:19:23,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:23,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092529179] [2023-08-30 14:19:23,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092529179] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:23,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697857322] [2023-08-30 14:19:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:23,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:23,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:23,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:19:23,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:19:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:23,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:19:23,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:24,003 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 14:19:24,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:19:24,013 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 14:19:24,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697857322] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:19:24,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:19:24,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:19:24,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461311059] [2023-08-30 14:19:24,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:19:24,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:19:24,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:19:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:19:24,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 14:19:24,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 307.57142857142856) internal successors, (2153), 7 states have internal predecessors, (2153), 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 14:19:24,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:24,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 14:19:24,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:27,672 INFO L130 PetriNetUnfolder]: 52323/79074 cut-off events. [2023-08-30 14:19:27,672 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 14:19:27,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154723 conditions, 79074 events. 52323/79074 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2611. Compared 612155 event pairs, 47170 based on Foata normal form. 0/52513 useless extension candidates. Maximal degree in co-relation 154710. Up to 75495 conditions per place. [2023-08-30 14:19:27,934 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 100 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-30 14:19:27,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 486 flow [2023-08-30 14:19:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:19:27,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:19:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1944 transitions. [2023-08-30 14:19:27,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835820895522388 [2023-08-30 14:19:27,939 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1944 transitions. [2023-08-30 14:19:27,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1944 transitions. [2023-08-30 14:19:27,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:27,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1944 transitions. [2023-08-30 14:19:27,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 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 14:19:27,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 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 14:19:27,957 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 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 14:19:27,957 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 264 flow. Second operand 6 states and 1944 transitions. [2023-08-30 14:19:27,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 486 flow [2023-08-30 14:19:27,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 483 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:19:27,960 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 297 flow [2023-08-30 14:19:27,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-08-30 14:19:27,962 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 9 predicate places. [2023-08-30 14:19:27,962 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 297 flow [2023-08-30 14:19:27,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 307.57142857142856) internal successors, (2153), 7 states have internal predecessors, (2153), 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 14:19:27,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:27,963 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:27,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 14:19:28,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:28,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:28,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash 971389367, now seen corresponding path program 2 times [2023-08-30 14:19:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:28,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046118561] [2023-08-30 14:19:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:19:28,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:28,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046118561] [2023-08-30 14:19:28,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046118561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:28,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:28,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:28,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863842954] [2023-08-30 14:19:28,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:28,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:28,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:28,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:28,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 14:19:28,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 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 14:19:28,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:28,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 14:19:28,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:31,943 INFO L130 PetriNetUnfolder]: 51964/79351 cut-off events. [2023-08-30 14:19:31,943 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 14:19:32,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154914 conditions, 79351 events. 51964/79351 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 2583. Compared 624164 event pairs, 22836 based on Foata normal form. 0/52773 useless extension candidates. Maximal degree in co-relation 154897. Up to 75338 conditions per place. [2023-08-30 14:19:32,249 INFO L137 encePairwiseOnDemand]: 665/670 looper letters, 129 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2023-08-30 14:19:32,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 147 transitions, 611 flow [2023-08-30 14:19:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:32,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:32,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2023-08-30 14:19:32,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228855721393035 [2023-08-30 14:19:32,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2023-08-30 14:19:32,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2023-08-30 14:19:32,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:32,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2023-08-30 14:19:32,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 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 14:19:32,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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 14:19:32,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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 14:19:32,256 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 297 flow. Second operand 3 states and 1051 transitions. [2023-08-30 14:19:32,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 147 transitions, 611 flow [2023-08-30 14:19:32,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 147 transitions, 597 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:32,258 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 299 flow [2023-08-30 14:19:32,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2023-08-30 14:19:32,259 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2023-08-30 14:19:32,259 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 299 flow [2023-08-30 14:19:32,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 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 14:19:32,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:32,259 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:32,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:19:32,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:32,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash -703396309, now seen corresponding path program 1 times [2023-08-30 14:19:32,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:32,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109550825] [2023-08-30 14:19:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:32,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:32,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:32,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109550825] [2023-08-30 14:19:32,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109550825] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:32,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145128302] [2023-08-30 14:19:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:32,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:32,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:32,310 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:19:32,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:19:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:32,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:19:32,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:32,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:19:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:32,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145128302] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:19:32,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:19:32,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:19:32,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488423369] [2023-08-30 14:19:32,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:19:32,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:19:32,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:32,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:19:32,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:19:32,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 14:19:32,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 299 flow. Second operand has 13 states, 13 states have (on average 307.61538461538464) internal successors, (3999), 13 states have internal predecessors, (3999), 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 14:19:32,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:32,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 14:19:32,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:36,711 INFO L130 PetriNetUnfolder]: 52627/79298 cut-off events. [2023-08-30 14:19:36,712 INFO L131 PetriNetUnfolder]: For 1372/1372 co-relation queries the response was YES. [2023-08-30 14:19:36,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157121 conditions, 79298 events. 52627/79298 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 2567. Compared 609364 event pairs, 47124 based on Foata normal form. 6/53321 useless extension candidates. Maximal degree in co-relation 157103. Up to 75361 conditions per place. [2023-08-30 14:19:37,026 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 101 selfloop transitions, 11 changer transitions 0/128 dead transitions. [2023-08-30 14:19:37,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 559 flow [2023-08-30 14:19:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:19:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:19:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3789 transitions. [2023-08-30 14:19:37,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126865671641793 [2023-08-30 14:19:37,033 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3789 transitions. [2023-08-30 14:19:37,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3789 transitions. [2023-08-30 14:19:37,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:37,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3789 transitions. [2023-08-30 14:19:37,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 315.75) internal successors, (3789), 12 states have internal predecessors, (3789), 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 14:19:37,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 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 14:19:37,046 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 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 14:19:37,046 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 299 flow. Second operand 12 states and 3789 transitions. [2023-08-30 14:19:37,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 559 flow [2023-08-30 14:19:37,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:37,050 INFO L231 Difference]: Finished difference. Result has 141 places, 128 transitions, 381 flow [2023-08-30 14:19:37,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=381, PETRI_PLACES=141, PETRI_TRANSITIONS=128} [2023-08-30 14:19:37,051 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 27 predicate places. [2023-08-30 14:19:37,051 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 128 transitions, 381 flow [2023-08-30 14:19:37,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 307.61538461538464) internal successors, (3999), 13 states have internal predecessors, (3999), 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 14:19:37,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:37,052 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:37,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 14:19:37,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 14:19:37,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:37,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:37,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1522001082, now seen corresponding path program 1 times [2023-08-30 14:19:37,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:37,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774464507] [2023-08-30 14:19:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:37,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:19:37,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:37,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774464507] [2023-08-30 14:19:37,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774464507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:37,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:37,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:37,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023948352] [2023-08-30 14:19:37,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:37,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:37,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:37,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:37,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:37,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 14:19:37,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 128 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 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 14:19:37,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:37,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 14:19:37,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:41,528 INFO L130 PetriNetUnfolder]: 51482/77575 cut-off events. [2023-08-30 14:19:41,528 INFO L131 PetriNetUnfolder]: For 1335/1335 co-relation queries the response was YES. [2023-08-30 14:19:41,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153196 conditions, 77575 events. 51482/77575 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 2520. Compared 593532 event pairs, 46067 based on Foata normal form. 0/52524 useless extension candidates. Maximal degree in co-relation 153170. Up to 73702 conditions per place. [2023-08-30 14:19:41,892 INFO L137 encePairwiseOnDemand]: 668/670 looper letters, 110 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2023-08-30 14:19:41,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 127 transitions, 599 flow [2023-08-30 14:19:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1022 transitions. [2023-08-30 14:19:41,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084577114427861 [2023-08-30 14:19:41,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1022 transitions. [2023-08-30 14:19:41,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1022 transitions. [2023-08-30 14:19:41,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:41,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1022 transitions. [2023-08-30 14:19:41,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 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 14:19:41,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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 14:19:41,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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 14:19:41,907 INFO L175 Difference]: Start difference. First operand has 141 places, 128 transitions, 381 flow. Second operand 3 states and 1022 transitions. [2023-08-30 14:19:41,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 127 transitions, 599 flow [2023-08-30 14:19:41,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 127 transitions, 551 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:19:41,910 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 331 flow [2023-08-30 14:19:41,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2023-08-30 14:19:41,911 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 23 predicate places. [2023-08-30 14:19:41,911 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 331 flow [2023-08-30 14:19:41,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 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 14:19:41,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:41,911 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:41,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:19:41,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:41,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:41,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1522001153, now seen corresponding path program 1 times [2023-08-30 14:19:41,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:41,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940650440] [2023-08-30 14:19:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:41,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 14:19:41,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:41,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940650440] [2023-08-30 14:19:41,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940650440] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:41,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:41,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:41,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402180817] [2023-08-30 14:19:41,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:41,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:41,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:41,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:41,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:41,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 14:19:41,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 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 14:19:41,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:41,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 14:19:41,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:45,809 INFO L130 PetriNetUnfolder]: 48867/76871 cut-off events. [2023-08-30 14:19:45,810 INFO L131 PetriNetUnfolder]: For 770/770 co-relation queries the response was YES. [2023-08-30 14:19:46,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150263 conditions, 76871 events. 48867/76871 cut-off events. For 770/770 co-relation queries the response was YES. Maximal size of possible extension queue 2175. Compared 634781 event pairs, 1609 based on Foata normal form. 0/53050 useless extension candidates. Maximal degree in co-relation 150239. Up to 69200 conditions per place. [2023-08-30 14:19:46,200 INFO L137 encePairwiseOnDemand]: 666/670 looper letters, 154 selfloop transitions, 4 changer transitions 0/174 dead transitions. [2023-08-30 14:19:46,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 174 transitions, 739 flow [2023-08-30 14:19:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1066 transitions. [2023-08-30 14:19:46,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303482587064676 [2023-08-30 14:19:46,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1066 transitions. [2023-08-30 14:19:46,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1066 transitions. [2023-08-30 14:19:46,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:46,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1066 transitions. [2023-08-30 14:19:46,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.3333333333333) internal successors, (1066), 3 states have internal predecessors, (1066), 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 14:19:46,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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 14:19:46,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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 14:19:46,206 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 331 flow. Second operand 3 states and 1066 transitions. [2023-08-30 14:19:46,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 174 transitions, 739 flow [2023-08-30 14:19:46,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 174 transitions, 738 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:46,210 INFO L231 Difference]: Finished difference. Result has 138 places, 127 transitions, 342 flow [2023-08-30 14:19:46,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2023-08-30 14:19:46,210 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 24 predicate places. [2023-08-30 14:19:46,210 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 342 flow [2023-08-30 14:19:46,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 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 14:19:46,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:46,211 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:46,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:19:46,211 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:46,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash 588118332, now seen corresponding path program 1 times [2023-08-30 14:19:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:46,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393008908] [2023-08-30 14:19:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:19:46,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:46,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393008908] [2023-08-30 14:19:46,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393008908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:46,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:46,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:19:46,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189921025] [2023-08-30 14:19:46,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:46,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:19:46,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:46,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:19:46,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:19:46,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 670 [2023-08-30 14:19:46,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 295.6666666666667) internal successors, (1774), 6 states have internal predecessors, (1774), 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 14:19:46,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:46,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 670 [2023-08-30 14:19:46,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:54,034 INFO L130 PetriNetUnfolder]: 87874/133157 cut-off events. [2023-08-30 14:19:54,034 INFO L131 PetriNetUnfolder]: For 9750/9750 co-relation queries the response was YES. [2023-08-30 14:19:54,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268400 conditions, 133157 events. 87874/133157 cut-off events. For 9750/9750 co-relation queries the response was YES. Maximal size of possible extension queue 4147. Compared 1115630 event pairs, 16605 based on Foata normal form. 0/90407 useless extension candidates. Maximal degree in co-relation 268376. Up to 74689 conditions per place. [2023-08-30 14:19:54,725 INFO L137 encePairwiseOnDemand]: 653/670 looper letters, 354 selfloop transitions, 30 changer transitions 0/400 dead transitions. [2023-08-30 14:19:54,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 400 transitions, 1734 flow [2023-08-30 14:19:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:19:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:19:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2435 transitions. [2023-08-30 14:19:54,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191897654584222 [2023-08-30 14:19:54,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2435 transitions. [2023-08-30 14:19:54,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2435 transitions. [2023-08-30 14:19:54,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:54,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2435 transitions. [2023-08-30 14:19:54,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 347.85714285714283) internal successors, (2435), 7 states have internal predecessors, (2435), 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 14:19:54,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 670.0) internal successors, (5360), 8 states have internal predecessors, (5360), 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 14:19:54,737 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 670.0) internal successors, (5360), 8 states have internal predecessors, (5360), 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 14:19:54,737 INFO L175 Difference]: Start difference. First operand has 138 places, 127 transitions, 342 flow. Second operand 7 states and 2435 transitions. [2023-08-30 14:19:54,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 400 transitions, 1734 flow [2023-08-30 14:19:54,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 400 transitions, 1721 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:54,746 INFO L231 Difference]: Finished difference. Result has 148 places, 156 transitions, 546 flow [2023-08-30 14:19:54,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=148, PETRI_TRANSITIONS=156} [2023-08-30 14:19:54,746 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 34 predicate places. [2023-08-30 14:19:54,747 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 156 transitions, 546 flow [2023-08-30 14:19:54,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 295.6666666666667) internal successors, (1774), 6 states have internal predecessors, (1774), 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 14:19:54,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:54,747 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:54,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:19:54,748 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:54,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1468620600, now seen corresponding path program 1 times [2023-08-30 14:19:54,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:54,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653506151] [2023-08-30 14:19:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:54,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:19:54,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:54,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653506151] [2023-08-30 14:19:54,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653506151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:54,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:54,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:54,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916515425] [2023-08-30 14:19:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:54,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:54,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:54,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:54,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:54,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 14:19:54,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 156 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 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 14:19:54,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:54,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 14:19:54,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:09,781 INFO L130 PetriNetUnfolder]: 152637/231469 cut-off events. [2023-08-30 14:20:09,782 INFO L131 PetriNetUnfolder]: For 67311/67352 co-relation queries the response was YES. [2023-08-30 14:20:10,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524464 conditions, 231469 events. 152637/231469 cut-off events. For 67311/67352 co-relation queries the response was YES. Maximal size of possible extension queue 6623. Compared 2037521 event pairs, 123215 based on Foata normal form. 1357/171700 useless extension candidates. Maximal degree in co-relation 524433. Up to 130784 conditions per place. [2023-08-30 14:20:11,176 INFO L137 encePairwiseOnDemand]: 665/670 looper letters, 257 selfloop transitions, 2 changer transitions 0/275 dead transitions. [2023-08-30 14:20:11,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 275 transitions, 1462 flow [2023-08-30 14:20:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:20:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:20:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1113 transitions. [2023-08-30 14:20:11,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5537313432835821 [2023-08-30 14:20:11,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1113 transitions. [2023-08-30 14:20:11,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1113 transitions. [2023-08-30 14:20:11,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:11,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1113 transitions. [2023-08-30 14:20:11,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 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 14:20:11,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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 14:20:11,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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 14:20:11,182 INFO L175 Difference]: Start difference. First operand has 148 places, 156 transitions, 546 flow. Second operand 3 states and 1113 transitions. [2023-08-30 14:20:11,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 275 transitions, 1462 flow [2023-08-30 14:20:11,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 275 transitions, 1462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:20:11,566 INFO L231 Difference]: Finished difference. Result has 151 places, 157 transitions, 562 flow [2023-08-30 14:20:11,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=151, PETRI_TRANSITIONS=157} [2023-08-30 14:20:11,566 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 37 predicate places. [2023-08-30 14:20:11,566 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 157 transitions, 562 flow [2023-08-30 14:20:11,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 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 14:20:11,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:11,567 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:20:11,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:20:11,567 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:20:11,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:11,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1940641750, now seen corresponding path program 1 times [2023-08-30 14:20:11,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:11,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984291228] [2023-08-30 14:20:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:20:11,579 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:20:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:20:11,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:20:11,589 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:20:11,590 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2023-08-30 14:20:11,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 35 remaining) [2023-08-30 14:20:11,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 35 remaining) [2023-08-30 14:20:11,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 35 remaining) [2023-08-30 14:20:11,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 35 remaining) [2023-08-30 14:20:11,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 35 remaining) [2023-08-30 14:20:11,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 35 remaining) [2023-08-30 14:20:11,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 35 remaining) [2023-08-30 14:20:11,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 35 remaining) [2023-08-30 14:20:11,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 35 remaining) [2023-08-30 14:20:11,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 35 remaining) [2023-08-30 14:20:11,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 35 remaining) [2023-08-30 14:20:11,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 35 remaining) [2023-08-30 14:20:11,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 35 remaining) [2023-08-30 14:20:11,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 35 remaining) [2023-08-30 14:20:11,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 35 remaining) [2023-08-30 14:20:11,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 35 remaining) [2023-08-30 14:20:11,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 35 remaining) [2023-08-30 14:20:11,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 35 remaining) [2023-08-30 14:20:11,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 35 remaining) [2023-08-30 14:20:11,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 35 remaining) [2023-08-30 14:20:11,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 35 remaining) [2023-08-30 14:20:11,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 35 remaining) [2023-08-30 14:20:11,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 35 remaining) [2023-08-30 14:20:11,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 35 remaining) [2023-08-30 14:20:11,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 35 remaining) [2023-08-30 14:20:11,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 35 remaining) [2023-08-30 14:20:11,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 35 remaining) [2023-08-30 14:20:11,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 35 remaining) [2023-08-30 14:20:11,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 35 remaining) [2023-08-30 14:20:11,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 35 remaining) [2023-08-30 14:20:11,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 35 remaining) [2023-08-30 14:20:11,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 35 remaining) [2023-08-30 14:20:11,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 35 remaining) [2023-08-30 14:20:11,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 35 remaining) [2023-08-30 14:20:11,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:20:11,594 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:20:11,594 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:20:11,594 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:20:11,615 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:20:11,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:11,822 INFO L130 PetriNetUnfolder]: 168/1021 cut-off events. [2023-08-30 14:20:11,823 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:20:11,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 1021 events. 168/1021 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5733 event pairs, 1 based on Foata normal form. 0/769 useless extension candidates. Maximal degree in co-relation 719. Up to 16 conditions per place. [2023-08-30 14:20:11,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:11,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:11,836 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:20:11,836 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:11,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:11,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:11,914 INFO L130 PetriNetUnfolder]: 168/1021 cut-off events. [2023-08-30 14:20:11,914 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:20:11,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 1021 events. 168/1021 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5733 event pairs, 1 based on Foata normal form. 0/769 useless extension candidates. Maximal degree in co-relation 719. Up to 16 conditions per place. [2023-08-30 14:20:11,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 121920 [2023-08-30 14:20:15,646 INFO L134 LiptonReduction]: Checked pairs total: 218513 [2023-08-30 14:20:15,646 INFO L136 LiptonReduction]: Total number of compositions: 366 [2023-08-30 14:20:15,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:20:15,647 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;@2b58fe3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:20:15,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-30 14:20:15,648 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 14:20:15,648 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:20:15,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:15,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:20:15,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 14:20:15,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:15,649 INFO L85 PathProgramCache]: Analyzing trace with hash 88220, now seen corresponding path program 1 times [2023-08-30 14:20:15,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:15,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546769925] [2023-08-30 14:20:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:15,662 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 14:20:15,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:15,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546769925] [2023-08-30 14:20:15,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546769925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:15,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:15,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:20:15,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299999184] [2023-08-30 14:20:15,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:15,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:20:15,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:20:15,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:20:15,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 817 [2023-08-30 14:20:15,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 198 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 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 14:20:15,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:15,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 817 [2023-08-30 14:20:15,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand