./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack-2.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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:43:11,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:43:11,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:43:11,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:43:11,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:43:11,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:43:11,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:43:11,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:43:11,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:43:11,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:43:11,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:43:11,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:43:11,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:43:11,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:43:11,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:43:11,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:43:11,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:43:11,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:43:11,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:43:11,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:43:11,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:43:11,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:43:11,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:43:11,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:43:11,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:43:11,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:43:11,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:43:11,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:43:11,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:43:11,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:43:11,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:43:11,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:43:11,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:43:11,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:43:11,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:43:11,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:43:11,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:43:11,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:43:11,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:43:11,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:43:11,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:43:11,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:43:11,491 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:43:11,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:43:11,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:43:11,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:43:11,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:43:11,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:43:11,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:43:11,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:43:11,495 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:43:11,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:43:11,496 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:43:11,497 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:43:11,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:43:11,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:43:11,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:43:11,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:43:11,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:43:11,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:43:11,498 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:43:11,498 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:43:11,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:43:11,499 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:43:11,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:43:11,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:43:11,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:43:11,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:43:11,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:43:11,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:43:11,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:43:11,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:43:11,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:43:11,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:43:11,501 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:43:11,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:43:11,502 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:43:11,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:43:11,502 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:43:11,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:43:11,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:43:11,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:43:11,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:43:11,892 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:43:11,893 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:43:11,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2023-09-01 04:43:13,222 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:43:13,527 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:43:13,528 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2023-09-01 04:43:13,547 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/748836c6f/fada151c02be44a786ee0df5ff013274/FLAGa424dc40c [2023-09-01 04:43:13,568 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/748836c6f/fada151c02be44a786ee0df5ff013274 [2023-09-01 04:43:13,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:43:13,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:43:13,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:43:13,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:43:13,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:43:13,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:43:13" (1/1) ... [2023-09-01 04:43:13,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27775a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:13, skipping insertion in model container [2023-09-01 04:43:13,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:43:13" (1/1) ... [2023-09-01 04:43:13,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:43:13,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:43:13,969 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2023-09-01 04:43:13,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:43:14,006 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:43:14,057 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2023-09-01 04:43:14,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:43:14,143 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:43:14,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14 WrapperNode [2023-09-01 04:43:14,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:43:14,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:43:14,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:43:14,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:43:14,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,232 INFO L138 Inliner]: procedures = 277, calls = 44, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 168 [2023-09-01 04:43:14,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:43:14,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:43:14,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:43:14,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:43:14,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,294 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:43:14,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:43:14,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:43:14,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:43:14,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (1/1) ... [2023-09-01 04:43:14,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:43:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:14,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 04:43:14,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 04:43:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 04:43:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 04:43:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 04:43:14,392 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 04:43:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:43:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:43:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 04:43:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:43:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 04:43:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:43:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:43:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:43:14,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:43:14,396 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 04:43:14,547 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:43:14,557 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:43:14,822 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:43:14,841 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:43:14,842 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:43:14,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:43:14 BoogieIcfgContainer [2023-09-01 04:43:14,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:43:14,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:43:14,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:43:14,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:43:14,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:43:13" (1/3) ... [2023-09-01 04:43:14,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3a0145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:43:14, skipping insertion in model container [2023-09-01 04:43:14,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:43:14" (2/3) ... [2023-09-01 04:43:14,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3a0145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:43:14, skipping insertion in model container [2023-09-01 04:43:14,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:43:14" (3/3) ... [2023-09-01 04:43:14,855 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2023-09-01 04:43:14,863 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:43:14,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:43:14,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 04:43:14,874 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:43:15,022 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 04:43:15,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 176 transitions, 368 flow [2023-09-01 04:43:15,166 INFO L130 PetriNetUnfolder]: 10/174 cut-off events. [2023-09-01 04:43:15,167 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:43:15,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 10/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 451 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-09-01 04:43:15,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 176 transitions, 368 flow [2023-09-01 04:43:15,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 165 transitions, 339 flow [2023-09-01 04:43:15,190 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:43:15,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 165 transitions, 339 flow [2023-09-01 04:43:15,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 165 transitions, 339 flow [2023-09-01 04:43:15,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 339 flow [2023-09-01 04:43:15,337 INFO L130 PetriNetUnfolder]: 10/165 cut-off events. [2023-09-01 04:43:15,338 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:43:15,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 165 events. 10/165 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 379 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-09-01 04:43:15,348 INFO L119 LiptonReduction]: Number of co-enabled transitions 9140 [2023-09-01 04:43:19,245 INFO L134 LiptonReduction]: Checked pairs total: 12517 [2023-09-01 04:43:19,246 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-09-01 04:43:19,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:43:19,278 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;@19575b55, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:43:19,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 04:43:19,284 INFO L130 PetriNetUnfolder]: 1/17 cut-off events. [2023-09-01 04:43:19,284 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:43:19,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:19,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:19,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:19,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash -175126251, now seen corresponding path program 1 times [2023-09-01 04:43:19,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:19,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160159829] [2023-09-01 04:43:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:19,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:19,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:19,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160159829] [2023-09-01 04:43:19,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160159829] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:19,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:19,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:43:19,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187092588] [2023-09-01 04:43:19,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:19,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:43:19,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:43:19,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:43:19,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-09-01 04:43:19,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2023-09-01 04:43:19,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:19,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-09-01 04:43:19,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:19,988 INFO L130 PetriNetUnfolder]: 1406/2275 cut-off events. [2023-09-01 04:43:19,989 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-09-01 04:43:19,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4597 conditions, 2275 events. 1406/2275 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10416 event pairs, 409 based on Foata normal form. 0/1576 useless extension candidates. Maximal degree in co-relation 4306. Up to 1406 conditions per place. [2023-09-01 04:43:20,003 INFO L137 encePairwiseOnDemand]: 322/331 looper letters, 65 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-09-01 04:43:20,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 293 flow [2023-09-01 04:43:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:43:20,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:43:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-09-01 04:43:20,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609264853977844 [2023-09-01 04:43:20,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-09-01 04:43:20,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-09-01 04:43:20,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:20,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-09-01 04:43:20,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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) [2023-09-01 04:43:20,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:20,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:20,042 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 557 transitions. [2023-09-01 04:43:20,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 293 flow [2023-09-01 04:43:20,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 70 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:43:20,051 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 122 flow [2023-09-01 04:43:20,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-09-01 04:43:20,057 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-09-01 04:43:20,058 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 122 flow [2023-09-01 04:43:20,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2023-09-01 04:43:20,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:20,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:20,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:43:20,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:20,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:20,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1109344561, now seen corresponding path program 1 times [2023-09-01 04:43:20,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:20,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387926148] [2023-09-01 04:43:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:20,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:20,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:20,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387926148] [2023-09-01 04:43:20,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387926148] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:20,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:20,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:43:20,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031758246] [2023-09-01 04:43:20,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:20,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:43:20,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:20,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:43:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:43:20,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-09-01 04:43:20,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-09-01 04:43:20,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:20,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-09-01 04:43:20,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:20,548 INFO L130 PetriNetUnfolder]: 2094/3475 cut-off events. [2023-09-01 04:43:20,549 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2023-09-01 04:43:20,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 3475 events. 2094/3475 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 18415 event pairs, 990 based on Foata normal form. 0/2825 useless extension candidates. Maximal degree in co-relation 5818. Up to 2104 conditions per place. [2023-09-01 04:43:20,569 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 74 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-09-01 04:43:20,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 371 flow [2023-09-01 04:43:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:43:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:43:20,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-09-01 04:43:20,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599194360523666 [2023-09-01 04:43:20,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-09-01 04:43:20,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-09-01 04:43:20,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:20,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-09-01 04:43:20,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 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) [2023-09-01 04:43:20,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:20,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:20,577 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 122 flow. Second operand 3 states and 556 transitions. [2023-09-01 04:43:20,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 371 flow [2023-09-01 04:43:20,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:43:20,601 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 130 flow [2023-09-01 04:43:20,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-09-01 04:43:20,602 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-09-01 04:43:20,602 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 130 flow [2023-09-01 04:43:20,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-09-01 04:43:20,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:20,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:20,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:43:20,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:20,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1551284684, now seen corresponding path program 1 times [2023-09-01 04:43:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:20,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460872830] [2023-09-01 04:43:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:20,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:20,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:20,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460872830] [2023-09-01 04:43:20,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460872830] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:20,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:20,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:43:20,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724901169] [2023-09-01 04:43:20,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:20,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:43:20,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:43:20,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:43:20,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-09-01 04:43:20,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2023-09-01 04:43:20,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:20,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-09-01 04:43:20,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:21,257 INFO L130 PetriNetUnfolder]: 3346/5369 cut-off events. [2023-09-01 04:43:21,258 INFO L131 PetriNetUnfolder]: For 679/679 co-relation queries the response was YES. [2023-09-01 04:43:21,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12561 conditions, 5369 events. 3346/5369 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 30613 event pairs, 1584 based on Foata normal form. 0/4481 useless extension candidates. Maximal degree in co-relation 10280. Up to 3274 conditions per place. [2023-09-01 04:43:21,290 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-09-01 04:43:21,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 394 flow [2023-09-01 04:43:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:43:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:43:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-09-01 04:43:21,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599194360523666 [2023-09-01 04:43:21,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-09-01 04:43:21,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-09-01 04:43:21,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:21,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-09-01 04:43:21,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 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) [2023-09-01 04:43:21,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:21,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:21,298 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 130 flow. Second operand 3 states and 556 transitions. [2023-09-01 04:43:21,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 394 flow [2023-09-01 04:43:21,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:43:21,302 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 144 flow [2023-09-01 04:43:21,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-09-01 04:43:21,303 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-09-01 04:43:21,303 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 144 flow [2023-09-01 04:43:21,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2023-09-01 04:43:21,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:21,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:21,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:43:21,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:21,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1398898743, now seen corresponding path program 1 times [2023-09-01 04:43:21,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:21,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261985362] [2023-09-01 04:43:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:21,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:21,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261985362] [2023-09-01 04:43:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261985362] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:21,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343620725] [2023-09-01 04:43:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:21,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:21,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:21,401 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) [2023-09-01 04:43:21,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 04:43:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:21,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:43:21,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:21,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:21,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:43:21,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343620725] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:21,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:43:21,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:43:21,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189631608] [2023-09-01 04:43:21,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:21,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:43:21,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:21,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:43:21,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:43:21,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-09-01 04:43:21,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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) [2023-09-01 04:43:21,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:21,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-09-01 04:43:21,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:22,173 INFO L130 PetriNetUnfolder]: 2912/4835 cut-off events. [2023-09-01 04:43:22,174 INFO L131 PetriNetUnfolder]: For 809/809 co-relation queries the response was YES. [2023-09-01 04:43:22,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11402 conditions, 4835 events. 2912/4835 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 27863 event pairs, 189 based on Foata normal form. 0/4273 useless extension candidates. Maximal degree in co-relation 10670. Up to 3012 conditions per place. [2023-09-01 04:43:22,209 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 95 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-09-01 04:43:22,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 98 transitions, 504 flow [2023-09-01 04:43:22,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:43:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:43:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 732 transitions. [2023-09-01 04:43:22,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552870090634441 [2023-09-01 04:43:22,212 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 732 transitions. [2023-09-01 04:43:22,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 732 transitions. [2023-09-01 04:43:22,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:22,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 732 transitions. [2023-09-01 04:43:22,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-09-01 04:43:22,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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) [2023-09-01 04:43:22,218 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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) [2023-09-01 04:43:22,218 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 144 flow. Second operand 4 states and 732 transitions. [2023-09-01 04:43:22,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 98 transitions, 504 flow [2023-09-01 04:43:22,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 98 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:43:22,222 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 142 flow [2023-09-01 04:43:22,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-09-01 04:43:22,224 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-09-01 04:43:22,224 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 142 flow [2023-09-01 04:43:22,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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) [2023-09-01 04:43:22,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:22,225 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:22,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:22,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:22,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:22,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:22,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1398898774, now seen corresponding path program 1 times [2023-09-01 04:43:22,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:22,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463365274] [2023-09-01 04:43:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:22,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:43:22,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:22,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463365274] [2023-09-01 04:43:22,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463365274] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:22,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:22,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:43:22,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807185184] [2023-09-01 04:43:22,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:22,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:43:22,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:43:22,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:43:22,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-09-01 04:43:22,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-09-01 04:43:22,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:22,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-09-01 04:43:22,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:22,854 INFO L130 PetriNetUnfolder]: 2809/4632 cut-off events. [2023-09-01 04:43:22,854 INFO L131 PetriNetUnfolder]: For 881/881 co-relation queries the response was YES. [2023-09-01 04:43:22,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10952 conditions, 4632 events. 2809/4632 cut-off events. For 881/881 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26447 event pairs, 537 based on Foata normal form. 0/4182 useless extension candidates. Maximal degree in co-relation 10244. Up to 3740 conditions per place. [2023-09-01 04:43:22,908 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 59 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-09-01 04:43:22,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 329 flow [2023-09-01 04:43:22,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:43:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:43:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2023-09-01 04:43:22,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540785498489426 [2023-09-01 04:43:22,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2023-09-01 04:43:22,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2023-09-01 04:43:22,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:22,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2023-09-01 04:43:22,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2023-09-01 04:43:22,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:22,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:22,917 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 142 flow. Second operand 3 states and 537 transitions. [2023-09-01 04:43:22,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 329 flow [2023-09-01 04:43:22,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:43:22,920 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 151 flow [2023-09-01 04:43:22,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-09-01 04:43:22,924 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-09-01 04:43:22,924 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 151 flow [2023-09-01 04:43:22,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-09-01 04:43:22,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:22,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:22,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 04:43:22,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:22,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:22,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1784702985, now seen corresponding path program 1 times [2023-09-01 04:43:22,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:22,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222561382] [2023-09-01 04:43:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:22,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:23,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222561382] [2023-09-01 04:43:23,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222561382] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185420833] [2023-09-01 04:43:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:23,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:23,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:23,034 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) [2023-09-01 04:43:23,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 04:43:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:23,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:43:23,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:23,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:43:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:23,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185420833] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:43:23,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:43:23,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-09-01 04:43:23,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957075561] [2023-09-01 04:43:23,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:43:23,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:43:23,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:43:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:43:23,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2023-09-01 04:43:23,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 151 flow. Second operand has 10 states, 10 states have (on average 159.7) internal successors, (1597), 10 states have internal predecessors, (1597), 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) [2023-09-01 04:43:23,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:23,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2023-09-01 04:43:23,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:24,225 INFO L130 PetriNetUnfolder]: 5222/8549 cut-off events. [2023-09-01 04:43:24,225 INFO L131 PetriNetUnfolder]: For 3764/3764 co-relation queries the response was YES. [2023-09-01 04:43:24,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21494 conditions, 8549 events. 5222/8549 cut-off events. For 3764/3764 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 49415 event pairs, 1050 based on Foata normal form. 110/7907 useless extension candidates. Maximal degree in co-relation 20552. Up to 2827 conditions per place. [2023-09-01 04:43:24,275 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 248 selfloop transitions, 42 changer transitions 0/291 dead transitions. [2023-09-01 04:43:24,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 291 transitions, 1587 flow [2023-09-01 04:43:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 04:43:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 04:43:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2773 transitions. [2023-09-01 04:43:24,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236027190332326 [2023-09-01 04:43:24,283 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2773 transitions. [2023-09-01 04:43:24,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2773 transitions. [2023-09-01 04:43:24,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:24,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2773 transitions. [2023-09-01 04:43:24,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 173.3125) internal successors, (2773), 16 states have internal predecessors, (2773), 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) [2023-09-01 04:43:24,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 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) [2023-09-01 04:43:24,298 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 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) [2023-09-01 04:43:24,298 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 151 flow. Second operand 16 states and 2773 transitions. [2023-09-01 04:43:24,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 291 transitions, 1587 flow [2023-09-01 04:43:24,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 291 transitions, 1544 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:43:24,311 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 449 flow [2023-09-01 04:43:24,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=449, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2023-09-01 04:43:24,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-09-01 04:43:24,313 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 449 flow [2023-09-01 04:43:24,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 159.7) internal successors, (1597), 10 states have internal predecessors, (1597), 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) [2023-09-01 04:43:24,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:24,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:24,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:24,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-09-01 04:43:24,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:24,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash -527172851, now seen corresponding path program 1 times [2023-09-01 04:43:24,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:24,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335513480] [2023-09-01 04:43:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:24,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:24,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:24,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335513480] [2023-09-01 04:43:24,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335513480] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:24,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:24,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:43:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174659202] [2023-09-01 04:43:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:24,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:43:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:43:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:43:24,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 331 [2023-09-01 04:43:24,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2023-09-01 04:43:24,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:24,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 331 [2023-09-01 04:43:24,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:24,860 INFO L130 PetriNetUnfolder]: 1681/3028 cut-off events. [2023-09-01 04:43:24,860 INFO L131 PetriNetUnfolder]: For 2736/2736 co-relation queries the response was YES. [2023-09-01 04:43:24,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8839 conditions, 3028 events. 1681/3028 cut-off events. For 2736/2736 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 16658 event pairs, 301 based on Foata normal form. 288/3166 useless extension candidates. Maximal degree in co-relation 8099. Up to 2344 conditions per place. [2023-09-01 04:43:24,879 INFO L137 encePairwiseOnDemand]: 324/331 looper letters, 59 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-09-01 04:43:24,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 463 flow [2023-09-01 04:43:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:43:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:43:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-09-01 04:43:24,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307150050352467 [2023-09-01 04:43:24,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-09-01 04:43:24,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-09-01 04:43:24,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:24,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-09-01 04:43:24,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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) [2023-09-01 04:43:24,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:24,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:24,885 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 449 flow. Second operand 3 states and 527 transitions. [2023-09-01 04:43:24,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 463 flow [2023-09-01 04:43:24,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 427 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-09-01 04:43:24,905 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 265 flow [2023-09-01 04:43:24,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-09-01 04:43:24,906 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-09-01 04:43:24,906 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 265 flow [2023-09-01 04:43:24,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2023-09-01 04:43:24,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:24,906 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:24,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:43:24,907 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:24,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:24,907 INFO L85 PathProgramCache]: Analyzing trace with hash 507482433, now seen corresponding path program 1 times [2023-09-01 04:43:24,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:24,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243418856] [2023-09-01 04:43:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:24,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:24,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:24,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243418856] [2023-09-01 04:43:24,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243418856] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:24,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323258390] [2023-09-01 04:43:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:24,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:24,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:24,977 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) [2023-09-01 04:43:25,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 04:43:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:25,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:43:25,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:25,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:43:25,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323258390] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:25,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:43:25,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-09-01 04:43:25,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942333425] [2023-09-01 04:43:25,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:25,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:43:25,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:43:25,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:43:25,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2023-09-01 04:43:25,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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) [2023-09-01 04:43:25,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:25,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2023-09-01 04:43:25,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:25,500 INFO L130 PetriNetUnfolder]: 1720/3175 cut-off events. [2023-09-01 04:43:25,500 INFO L131 PetriNetUnfolder]: For 2231/2231 co-relation queries the response was YES. [2023-09-01 04:43:25,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9177 conditions, 3175 events. 1720/3175 cut-off events. For 2231/2231 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 16910 event pairs, 375 based on Foata normal form. 126/3129 useless extension candidates. Maximal degree in co-relation 8178. Up to 1602 conditions per place. [2023-09-01 04:43:25,516 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 96 selfloop transitions, 18 changer transitions 0/115 dead transitions. [2023-09-01 04:43:25,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 723 flow [2023-09-01 04:43:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:43:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:43:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1038 transitions. [2023-09-01 04:43:25,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226586102719033 [2023-09-01 04:43:25,519 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1038 transitions. [2023-09-01 04:43:25,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1038 transitions. [2023-09-01 04:43:25,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:25,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1038 transitions. [2023-09-01 04:43:25,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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) [2023-09-01 04:43:25,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2023-09-01 04:43:25,525 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2023-09-01 04:43:25,526 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 265 flow. Second operand 6 states and 1038 transitions. [2023-09-01 04:43:25,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 723 flow [2023-09-01 04:43:25,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 704 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:43:25,532 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 344 flow [2023-09-01 04:43:25,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-09-01 04:43:25,532 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-09-01 04:43:25,533 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 344 flow [2023-09-01 04:43:25,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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) [2023-09-01 04:43:25,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:25,534 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:25,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:25,739 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 [2023-09-01 04:43:25,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:25,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:25,740 INFO L85 PathProgramCache]: Analyzing trace with hash -698507269, now seen corresponding path program 1 times [2023-09-01 04:43:25,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:25,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717991990] [2023-09-01 04:43:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:25,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:25,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717991990] [2023-09-01 04:43:25,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717991990] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:25,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:25,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:43:25,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449773376] [2023-09-01 04:43:25,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:25,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:43:25,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:43:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:43:25,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 331 [2023-09-01 04:43:25,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 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) [2023-09-01 04:43:25,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:25,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 331 [2023-09-01 04:43:25,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:26,150 INFO L130 PetriNetUnfolder]: 2039/3746 cut-off events. [2023-09-01 04:43:26,151 INFO L131 PetriNetUnfolder]: For 3648/3648 co-relation queries the response was YES. [2023-09-01 04:43:26,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11238 conditions, 3746 events. 2039/3746 cut-off events. For 3648/3648 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 20411 event pairs, 461 based on Foata normal form. 18/3534 useless extension candidates. Maximal degree in co-relation 10396. Up to 2141 conditions per place. [2023-09-01 04:43:26,183 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 110 selfloop transitions, 6 changer transitions 3/120 dead transitions. [2023-09-01 04:43:26,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 849 flow [2023-09-01 04:43:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:43:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:43:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 881 transitions. [2023-09-01 04:43:26,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323262839879154 [2023-09-01 04:43:26,186 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 881 transitions. [2023-09-01 04:43:26,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 881 transitions. [2023-09-01 04:43:26,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:26,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 881 transitions. [2023-09-01 04:43:26,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 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) [2023-09-01 04:43:26,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 331.0) internal successors, (1986), 6 states have internal predecessors, (1986), 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) [2023-09-01 04:43:26,193 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 331.0) internal successors, (1986), 6 states have internal predecessors, (1986), 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) [2023-09-01 04:43:26,193 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 344 flow. Second operand 5 states and 881 transitions. [2023-09-01 04:43:26,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 849 flow [2023-09-01 04:43:26,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 833 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 04:43:26,212 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 367 flow [2023-09-01 04:43:26,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-09-01 04:43:26,213 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-09-01 04:43:26,213 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 367 flow [2023-09-01 04:43:26,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 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) [2023-09-01 04:43:26,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:26,214 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 04:43:26,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:43:26,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:26,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash 124965910, now seen corresponding path program 1 times [2023-09-01 04:43:26,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:26,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941341587] [2023-09-01 04:43:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:26,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:43:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:26,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941341587] [2023-09-01 04:43:26,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941341587] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:26,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:26,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:43:26,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790416149] [2023-09-01 04:43:26,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:26,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:43:26,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:26,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:43:26,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:43:26,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-09-01 04:43:26,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2023-09-01 04:43:26,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:26,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-09-01 04:43:26,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:26,582 INFO L130 PetriNetUnfolder]: 1831/3354 cut-off events. [2023-09-01 04:43:26,582 INFO L131 PetriNetUnfolder]: For 3650/3656 co-relation queries the response was YES. [2023-09-01 04:43:26,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10372 conditions, 3354 events. 1831/3354 cut-off events. For 3650/3656 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 18198 event pairs, 582 based on Foata normal form. 6/3206 useless extension candidates. Maximal degree in co-relation 6817. Up to 2007 conditions per place. [2023-09-01 04:43:26,606 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 81 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-09-01 04:43:26,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 693 flow [2023-09-01 04:43:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:43:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:43:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-09-01 04:43:26,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5397784491440081 [2023-09-01 04:43:26,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-09-01 04:43:26,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-09-01 04:43:26,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:26,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-09-01 04:43:26,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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) [2023-09-01 04:43:26,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:26,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-09-01 04:43:26,614 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 367 flow. Second operand 3 states and 536 transitions. [2023-09-01 04:43:26,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 693 flow [2023-09-01 04:43:26,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 86 transitions, 683 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 04:43:26,626 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 373 flow [2023-09-01 04:43:26,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=373, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2023-09-01 04:43:26,627 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-09-01 04:43:26,627 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 373 flow [2023-09-01 04:43:26,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2023-09-01 04:43:26,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:26,628 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 04:43:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:43:26,628 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:26,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash 124965909, now seen corresponding path program 1 times [2023-09-01 04:43:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:26,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870882395] [2023-09-01 04:43:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:26,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:26,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870882395] [2023-09-01 04:43:26,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870882395] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:26,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204500521] [2023-09-01 04:43:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:26,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:26,698 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) [2023-09-01 04:43:26,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 04:43:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:26,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:43:26,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:26,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:43:26,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204500521] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:26,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:43:26,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:43:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480684513] [2023-09-01 04:43:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:26,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:43:26,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:43:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:43:26,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-09-01 04:43:26,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 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) [2023-09-01 04:43:26,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:26,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-09-01 04:43:26,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:27,176 INFO L130 PetriNetUnfolder]: 1713/3084 cut-off events. [2023-09-01 04:43:27,176 INFO L131 PetriNetUnfolder]: For 3701/3719 co-relation queries the response was YES. [2023-09-01 04:43:27,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9782 conditions, 3084 events. 1713/3084 cut-off events. For 3701/3719 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 15726 event pairs, 384 based on Foata normal form. 76/3082 useless extension candidates. Maximal degree in co-relation 9290. Up to 2505 conditions per place. [2023-09-01 04:43:27,193 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 88 selfloop transitions, 2 changer transitions 2/93 dead transitions. [2023-09-01 04:43:27,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 703 flow [2023-09-01 04:43:27,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:43:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:43:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 712 transitions. [2023-09-01 04:43:27,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377643504531722 [2023-09-01 04:43:27,199 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 712 transitions. [2023-09-01 04:43:27,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 712 transitions. [2023-09-01 04:43:27,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:27,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 712 transitions. [2023-09-01 04:43:27,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-09-01 04:43:27,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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) [2023-09-01 04:43:27,209 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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) [2023-09-01 04:43:27,209 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 373 flow. Second operand 4 states and 712 transitions. [2023-09-01 04:43:27,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 703 flow [2023-09-01 04:43:27,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 93 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:43:27,225 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 368 flow [2023-09-01 04:43:27,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-09-01 04:43:27,226 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-09-01 04:43:27,226 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 368 flow [2023-09-01 04:43:27,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 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) [2023-09-01 04:43:27,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:27,227 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:27,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:27,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:27,434 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:27,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash 350299545, now seen corresponding path program 1 times [2023-09-01 04:43:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:27,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345488195] [2023-09-01 04:43:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:27,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:27,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:27,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345488195] [2023-09-01 04:43:27,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345488195] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:27,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27981970] [2023-09-01 04:43:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:27,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:27,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:27,571 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) [2023-09-01 04:43:27,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 04:43:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:27,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 04:43:27,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:43:27,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:43:27,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27981970] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:27,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:43:27,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-09-01 04:43:27,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267519105] [2023-09-01 04:43:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:27,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:43:27,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:27,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:43:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:43:27,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-09-01 04:43:27,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 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) [2023-09-01 04:43:27,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:27,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-09-01 04:43:27,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:28,239 INFO L130 PetriNetUnfolder]: 2042/3657 cut-off events. [2023-09-01 04:43:28,239 INFO L131 PetriNetUnfolder]: For 4683/4683 co-relation queries the response was YES. [2023-09-01 04:43:28,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11477 conditions, 3657 events. 2042/3657 cut-off events. For 4683/4683 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 19022 event pairs, 527 based on Foata normal form. 44/3611 useless extension candidates. Maximal degree in co-relation 10606. Up to 1741 conditions per place. [2023-09-01 04:43:28,265 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 109 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2023-09-01 04:43:28,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 131 transitions, 947 flow [2023-09-01 04:43:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:43:28,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:43:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1165 transitions. [2023-09-01 04:43:28,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028053517479499 [2023-09-01 04:43:28,272 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1165 transitions. [2023-09-01 04:43:28,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1165 transitions. [2023-09-01 04:43:28,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:28,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1165 transitions. [2023-09-01 04:43:28,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.42857142857142) internal successors, (1165), 7 states have internal predecessors, (1165), 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) [2023-09-01 04:43:28,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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) [2023-09-01 04:43:28,280 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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) [2023-09-01 04:43:28,280 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 368 flow. Second operand 7 states and 1165 transitions. [2023-09-01 04:43:28,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 131 transitions, 947 flow [2023-09-01 04:43:28,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 131 transitions, 944 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:43:28,294 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 547 flow [2023-09-01 04:43:28,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=547, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-09-01 04:43:28,294 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2023-09-01 04:43:28,294 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 547 flow [2023-09-01 04:43:28,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 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) [2023-09-01 04:43:28,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:28,295 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:28,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:28,501 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,SelfDestructingSolverStorable11 [2023-09-01 04:43:28,501 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:28,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash -770938367, now seen corresponding path program 1 times [2023-09-01 04:43:28,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:28,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136493298] [2023-09-01 04:43:28,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:28,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136493298] [2023-09-01 04:43:28,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136493298] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:28,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719225832] [2023-09-01 04:43:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:28,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:28,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:28,634 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:43:28,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 04:43:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:28,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 04:43:28,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:43:28,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:43:28,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719225832] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:28,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:43:28,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-09-01 04:43:28,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197796500] [2023-09-01 04:43:28,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:28,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:43:28,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:28,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:43:28,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:43:28,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-09-01 04:43:28,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 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) [2023-09-01 04:43:28,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:28,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-09-01 04:43:28,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:29,440 INFO L130 PetriNetUnfolder]: 2554/4555 cut-off events. [2023-09-01 04:43:29,440 INFO L131 PetriNetUnfolder]: For 7165/7165 co-relation queries the response was YES. [2023-09-01 04:43:29,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14818 conditions, 4555 events. 2554/4555 cut-off events. For 7165/7165 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 24153 event pairs, 611 based on Foata normal form. 68/4509 useless extension candidates. Maximal degree in co-relation 13974. Up to 2194 conditions per place. [2023-09-01 04:43:29,466 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 110 selfloop transitions, 39 changer transitions 0/150 dead transitions. [2023-09-01 04:43:29,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 150 transitions, 1308 flow [2023-09-01 04:43:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:43:29,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:43:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1164 transitions. [2023-09-01 04:43:29,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023737591713423 [2023-09-01 04:43:29,470 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1164 transitions. [2023-09-01 04:43:29,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1164 transitions. [2023-09-01 04:43:29,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:29,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1164 transitions. [2023-09-01 04:43:29,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.28571428571428) internal successors, (1164), 7 states have internal predecessors, (1164), 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) [2023-09-01 04:43:29,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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) [2023-09-01 04:43:29,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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) [2023-09-01 04:43:29,477 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 547 flow. Second operand 7 states and 1164 transitions. [2023-09-01 04:43:29,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 150 transitions, 1308 flow [2023-09-01 04:43:29,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 150 transitions, 1262 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-09-01 04:43:29,494 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 946 flow [2023-09-01 04:43:29,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=946, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2023-09-01 04:43:29,496 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-09-01 04:43:29,496 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 946 flow [2023-09-01 04:43:29,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 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) [2023-09-01 04:43:29,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:29,497 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-09-01 04:43:29,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:29,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:29,704 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:29,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:29,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1836905027, now seen corresponding path program 1 times [2023-09-01 04:43:29,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:29,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381926126] [2023-09-01 04:43:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:29,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:29,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:29,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381926126] [2023-09-01 04:43:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381926126] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561961861] [2023-09-01 04:43:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:29,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:29,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:29,862 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:43:29,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 04:43:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:29,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:43:29,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:30,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:43:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:30,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561961861] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:43:30,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:43:30,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:43:30,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863886166] [2023-09-01 04:43:30,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:43:30,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:43:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:43:30,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:43:30,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2023-09-01 04:43:30,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 946 flow. Second operand has 18 states, 18 states have (on average 160.05555555555554) internal successors, (2881), 18 states have internal predecessors, (2881), 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) [2023-09-01 04:43:30,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:30,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2023-09-01 04:43:30,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:31,378 INFO L130 PetriNetUnfolder]: 4444/7925 cut-off events. [2023-09-01 04:43:31,378 INFO L131 PetriNetUnfolder]: For 17777/17777 co-relation queries the response was YES. [2023-09-01 04:43:31,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26866 conditions, 7925 events. 4444/7925 cut-off events. For 17777/17777 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 42378 event pairs, 1003 based on Foata normal form. 192/7913 useless extension candidates. Maximal degree in co-relation 25330. Up to 2524 conditions per place. [2023-09-01 04:43:31,412 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 302 selfloop transitions, 42 changer transitions 3/348 dead transitions. [2023-09-01 04:43:31,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 348 transitions, 2829 flow [2023-09-01 04:43:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:43:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:43:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3245 transitions. [2023-09-01 04:43:31,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159802830338687 [2023-09-01 04:43:31,420 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3245 transitions. [2023-09-01 04:43:31,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3245 transitions. [2023-09-01 04:43:31,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:31,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3245 transitions. [2023-09-01 04:43:31,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 170.78947368421052) internal successors, (3245), 19 states have internal predecessors, (3245), 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) [2023-09-01 04:43:31,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 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) [2023-09-01 04:43:31,438 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 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) [2023-09-01 04:43:31,438 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 946 flow. Second operand 19 states and 3245 transitions. [2023-09-01 04:43:31,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 348 transitions, 2829 flow [2023-09-01 04:43:31,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 348 transitions, 2783 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-09-01 04:43:31,478 INFO L231 Difference]: Finished difference. Result has 113 places, 111 transitions, 1269 flow [2023-09-01 04:43:31,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1269, PETRI_PLACES=113, PETRI_TRANSITIONS=111} [2023-09-01 04:43:31,479 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-09-01 04:43:31,479 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 111 transitions, 1269 flow [2023-09-01 04:43:31,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 160.05555555555554) internal successors, (2881), 18 states have internal predecessors, (2881), 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) [2023-09-01 04:43:31,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:31,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:31,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-01 04:43:31,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:31,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:31,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1957238620, now seen corresponding path program 1 times [2023-09-01 04:43:31,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:31,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193137148] [2023-09-01 04:43:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:43:31,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193137148] [2023-09-01 04:43:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193137148] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:31,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:31,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:43:31,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696290410] [2023-09-01 04:43:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:43:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:43:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:43:31,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 331 [2023-09-01 04:43:31,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 111 transitions, 1269 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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) [2023-09-01 04:43:31,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:31,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 331 [2023-09-01 04:43:31,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:32,806 INFO L130 PetriNetUnfolder]: 4308/7765 cut-off events. [2023-09-01 04:43:32,806 INFO L131 PetriNetUnfolder]: For 18792/18792 co-relation queries the response was YES. [2023-09-01 04:43:32,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27215 conditions, 7765 events. 4308/7765 cut-off events. For 18792/18792 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 42644 event pairs, 3408 based on Foata normal form. 30/7591 useless extension candidates. Maximal degree in co-relation 25600. Up to 7597 conditions per place. [2023-09-01 04:43:32,849 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 107 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2023-09-01 04:43:32,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1426 flow [2023-09-01 04:43:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:43:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:43:32,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 667 transitions. [2023-09-01 04:43:32,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037764350453172 [2023-09-01 04:43:32,851 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 667 transitions. [2023-09-01 04:43:32,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 667 transitions. [2023-09-01 04:43:32,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:32,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 667 transitions. [2023-09-01 04:43:32,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 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) [2023-09-01 04:43:32,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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) [2023-09-01 04:43:32,856 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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) [2023-09-01 04:43:32,856 INFO L175 Difference]: Start difference. First operand has 113 places, 111 transitions, 1269 flow. Second operand 4 states and 667 transitions. [2023-09-01 04:43:32,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1426 flow [2023-09-01 04:43:32,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 1333 flow, removed 37 selfloop flow, removed 5 redundant places. [2023-09-01 04:43:32,923 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 1108 flow [2023-09-01 04:43:32,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1108, PETRI_PLACES=110, PETRI_TRANSITIONS=107} [2023-09-01 04:43:32,924 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2023-09-01 04:43:32,924 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 1108 flow [2023-09-01 04:43:32,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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) [2023-09-01 04:43:32,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:32,925 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:32,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 04:43:32,925 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:32,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:32,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1935694427, now seen corresponding path program 2 times [2023-09-01 04:43:32,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:32,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036827768] [2023-09-01 04:43:32,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:32,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:43:33,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:33,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036827768] [2023-09-01 04:43:33,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036827768] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:33,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285614685] [2023-09-01 04:43:33,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:43:33,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:33,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:33,106 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:43:33,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 04:43:33,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:43:33,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:43:33,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:43:33,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:43:33,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:43:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:43:33,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285614685] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:43:33,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:43:33,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-09-01 04:43:33,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723572999] [2023-09-01 04:43:33,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:43:33,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:43:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:43:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:43:33,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 331 [2023-09-01 04:43:33,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 107 transitions, 1108 flow. Second operand has 16 states, 16 states have (on average 154.625) internal successors, (2474), 16 states have internal predecessors, (2474), 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) [2023-09-01 04:43:33,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:33,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 331 [2023-09-01 04:43:33,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:35,063 INFO L130 PetriNetUnfolder]: 5617/10008 cut-off events. [2023-09-01 04:43:35,063 INFO L131 PetriNetUnfolder]: For 20858/20858 co-relation queries the response was YES. [2023-09-01 04:43:35,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33840 conditions, 10008 events. 5617/10008 cut-off events. For 20858/20858 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 56741 event pairs, 1067 based on Foata normal form. 78/9828 useless extension candidates. Maximal degree in co-relation 32156. Up to 2943 conditions per place. [2023-09-01 04:43:35,128 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 217 selfloop transitions, 99 changer transitions 3/320 dead transitions. [2023-09-01 04:43:35,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 320 transitions, 2888 flow [2023-09-01 04:43:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 04:43:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 04:43:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3223 transitions. [2023-09-01 04:43:35,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48685800604229607 [2023-09-01 04:43:35,135 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3223 transitions. [2023-09-01 04:43:35,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3223 transitions. [2023-09-01 04:43:35,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:35,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3223 transitions. [2023-09-01 04:43:35,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 161.15) internal successors, (3223), 20 states have internal predecessors, (3223), 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) [2023-09-01 04:43:35,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 331.0) internal successors, (6951), 21 states have internal predecessors, (6951), 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) [2023-09-01 04:43:35,151 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 331.0) internal successors, (6951), 21 states have internal predecessors, (6951), 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) [2023-09-01 04:43:35,152 INFO L175 Difference]: Start difference. First operand has 110 places, 107 transitions, 1108 flow. Second operand 20 states and 3223 transitions. [2023-09-01 04:43:35,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 320 transitions, 2888 flow [2023-09-01 04:43:35,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 320 transitions, 2878 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:43:35,219 INFO L231 Difference]: Finished difference. Result has 130 places, 147 transitions, 1899 flow [2023-09-01 04:43:35,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1899, PETRI_PLACES=130, PETRI_TRANSITIONS=147} [2023-09-01 04:43:35,219 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2023-09-01 04:43:35,220 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 147 transitions, 1899 flow [2023-09-01 04:43:35,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 154.625) internal successors, (2474), 16 states have internal predecessors, (2474), 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) [2023-09-01 04:43:35,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:35,221 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:35,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 04:43:35,427 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:35,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1252909443, now seen corresponding path program 1 times [2023-09-01 04:43:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:35,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860696766] [2023-09-01 04:43:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:35,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:35,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860696766] [2023-09-01 04:43:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860696766] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875716113] [2023-09-01 04:43:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:35,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:35,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:35,640 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:43:35,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 04:43:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:35,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:43:35,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:35,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:43:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875716113] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:43:35,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:43:35,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-09-01 04:43:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932305986] [2023-09-01 04:43:35,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:43:35,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:43:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:35,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:43:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:43:36,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 331 [2023-09-01 04:43:36,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 147 transitions, 1899 flow. Second operand has 16 states, 16 states have (on average 155.25) internal successors, (2484), 16 states have internal predecessors, (2484), 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) [2023-09-01 04:43:36,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:36,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 331 [2023-09-01 04:43:36,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:37,419 INFO L130 PetriNetUnfolder]: 6026/10771 cut-off events. [2023-09-01 04:43:37,419 INFO L131 PetriNetUnfolder]: For 27006/27006 co-relation queries the response was YES. [2023-09-01 04:43:37,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37688 conditions, 10771 events. 6026/10771 cut-off events. For 27006/27006 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 62796 event pairs, 1079 based on Foata normal form. 102/10591 useless extension candidates. Maximal degree in co-relation 35948. Up to 6086 conditions per place. [2023-09-01 04:43:37,492 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 168 selfloop transitions, 122 changer transitions 3/294 dead transitions. [2023-09-01 04:43:37,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 294 transitions, 3133 flow [2023-09-01 04:43:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:43:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:43:37,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3040 transitions. [2023-09-01 04:43:37,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48338368580060426 [2023-09-01 04:43:37,498 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3040 transitions. [2023-09-01 04:43:37,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3040 transitions. [2023-09-01 04:43:37,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:37,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3040 transitions. [2023-09-01 04:43:37,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 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) [2023-09-01 04:43:37,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 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) [2023-09-01 04:43:37,511 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 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) [2023-09-01 04:43:37,511 INFO L175 Difference]: Start difference. First operand has 130 places, 147 transitions, 1899 flow. Second operand 19 states and 3040 transitions. [2023-09-01 04:43:37,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 294 transitions, 3133 flow [2023-09-01 04:43:37,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 294 transitions, 2885 flow, removed 84 selfloop flow, removed 6 redundant places. [2023-09-01 04:43:37,615 INFO L231 Difference]: Finished difference. Result has 138 places, 162 transitions, 2079 flow [2023-09-01 04:43:37,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2079, PETRI_PLACES=138, PETRI_TRANSITIONS=162} [2023-09-01 04:43:37,616 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2023-09-01 04:43:37,616 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 162 transitions, 2079 flow [2023-09-01 04:43:37,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 155.25) internal successors, (2484), 16 states have internal predecessors, (2484), 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) [2023-09-01 04:43:37,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:37,617 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:37,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-09-01 04:43:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 04:43:37,823 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:37,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:37,823 INFO L85 PathProgramCache]: Analyzing trace with hash 650444663, now seen corresponding path program 1 times [2023-09-01 04:43:37,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:37,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386122396] [2023-09-01 04:43:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:37,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:38,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:38,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386122396] [2023-09-01 04:43:38,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386122396] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694630400] [2023-09-01 04:43:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:38,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:38,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:38,040 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:43:38,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 04:43:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:38,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 04:43:38,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:38,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:43:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:38,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694630400] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:43:38,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:43:38,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-09-01 04:43:38,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971979439] [2023-09-01 04:43:38,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:43:38,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 04:43:38,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 04:43:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-09-01 04:43:38,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-09-01 04:43:38,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 162 transitions, 2079 flow. Second operand has 20 states, 20 states have (on average 156.1) internal successors, (3122), 20 states have internal predecessors, (3122), 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) [2023-09-01 04:43:38,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:38,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-09-01 04:43:38,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:40,287 INFO L130 PetriNetUnfolder]: 7934/14173 cut-off events. [2023-09-01 04:43:40,287 INFO L131 PetriNetUnfolder]: For 36501/36501 co-relation queries the response was YES. [2023-09-01 04:43:40,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49505 conditions, 14173 events. 7934/14173 cut-off events. For 36501/36501 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 83493 event pairs, 1371 based on Foata normal form. 72/13867 useless extension candidates. Maximal degree in co-relation 47728. Up to 6122 conditions per place. [2023-09-01 04:43:40,389 INFO L137 encePairwiseOnDemand]: 322/331 looper letters, 274 selfloop transitions, 180 changer transitions 3/458 dead transitions. [2023-09-01 04:43:40,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 458 transitions, 4902 flow [2023-09-01 04:43:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-09-01 04:43:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-09-01 04:43:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4070 transitions. [2023-09-01 04:43:40,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918429003021148 [2023-09-01 04:43:40,395 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4070 transitions. [2023-09-01 04:43:40,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4070 transitions. [2023-09-01 04:43:40,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:40,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4070 transitions. [2023-09-01 04:43:40,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 162.8) internal successors, (4070), 25 states have internal predecessors, (4070), 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) [2023-09-01 04:43:40,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 331.0) internal successors, (8606), 26 states have internal predecessors, (8606), 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) [2023-09-01 04:43:40,411 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 331.0) internal successors, (8606), 26 states have internal predecessors, (8606), 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) [2023-09-01 04:43:40,411 INFO L175 Difference]: Start difference. First operand has 138 places, 162 transitions, 2079 flow. Second operand 25 states and 4070 transitions. [2023-09-01 04:43:40,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 458 transitions, 4902 flow [2023-09-01 04:43:40,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 458 transitions, 3963 flow, removed 222 selfloop flow, removed 16 redundant places. [2023-09-01 04:43:40,533 INFO L231 Difference]: Finished difference. Result has 152 places, 239 transitions, 2798 flow [2023-09-01 04:43:40,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2798, PETRI_PLACES=152, PETRI_TRANSITIONS=239} [2023-09-01 04:43:40,534 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2023-09-01 04:43:40,535 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 239 transitions, 2798 flow [2023-09-01 04:43:40,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.1) internal successors, (3122), 20 states have internal predecessors, (3122), 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) [2023-09-01 04:43:40,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:40,535 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:40,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:40,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 04:43:40,736 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:40,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:40,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1592052127, now seen corresponding path program 3 times [2023-09-01 04:43:40,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:40,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297721798] [2023-09-01 04:43:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:40,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:43:41,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:41,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297721798] [2023-09-01 04:43:41,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297721798] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347353376] [2023-09-01 04:43:41,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:43:41,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:41,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:41,016 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:43:41,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 04:43:41,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-09-01 04:43:41,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:43:41,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 04:43:41,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:43:41,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:43:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:43:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347353376] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:43:41,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:43:41,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-09-01 04:43:41,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638869728] [2023-09-01 04:43:41,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:43:41,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 04:43:41,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 04:43:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-09-01 04:43:41,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 331 [2023-09-01 04:43:41,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 239 transitions, 2798 flow. Second operand has 21 states, 21 states have (on average 152.76190476190476) internal successors, (3208), 21 states have internal predecessors, (3208), 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) [2023-09-01 04:43:41,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:41,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 331 [2023-09-01 04:43:41,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:44,068 INFO L130 PetriNetUnfolder]: 11210/20015 cut-off events. [2023-09-01 04:43:44,069 INFO L131 PetriNetUnfolder]: For 46104/46104 co-relation queries the response was YES. [2023-09-01 04:43:44,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66852 conditions, 20015 events. 11210/20015 cut-off events. For 46104/46104 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 122815 event pairs, 2559 based on Foata normal form. 144/19625 useless extension candidates. Maximal degree in co-relation 65124. Up to 4156 conditions per place. [2023-09-01 04:43:44,238 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 340 selfloop transitions, 301 changer transitions 3/645 dead transitions. [2023-09-01 04:43:44,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 645 transitions, 6745 flow [2023-09-01 04:43:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-09-01 04:43:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-09-01 04:43:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4164 transitions. [2023-09-01 04:43:44,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48384847780618173 [2023-09-01 04:43:44,242 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4164 transitions. [2023-09-01 04:43:44,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4164 transitions. [2023-09-01 04:43:44,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:44,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4164 transitions. [2023-09-01 04:43:44,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.15384615384616) internal successors, (4164), 26 states have internal predecessors, (4164), 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) [2023-09-01 04:43:44,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 331.0) internal successors, (8937), 27 states have internal predecessors, (8937), 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) [2023-09-01 04:43:44,255 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 331.0) internal successors, (8937), 27 states have internal predecessors, (8937), 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) [2023-09-01 04:43:44,255 INFO L175 Difference]: Start difference. First operand has 152 places, 239 transitions, 2798 flow. Second operand 26 states and 4164 transitions. [2023-09-01 04:43:44,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 645 transitions, 6745 flow [2023-09-01 04:43:44,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 645 transitions, 6429 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-09-01 04:43:44,476 INFO L231 Difference]: Finished difference. Result has 172 places, 382 transitions, 5137 flow [2023-09-01 04:43:44,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5137, PETRI_PLACES=172, PETRI_TRANSITIONS=382} [2023-09-01 04:43:44,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-09-01 04:43:44,476 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 382 transitions, 5137 flow [2023-09-01 04:43:44,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 152.76190476190476) internal successors, (3208), 21 states have internal predecessors, (3208), 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) [2023-09-01 04:43:44,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:44,477 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-09-01 04:43:44,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:44,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:44,678 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:44,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash -18560069, now seen corresponding path program 2 times [2023-09-01 04:43:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:44,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389729473] [2023-09-01 04:43:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:44,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:45,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:45,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389729473] [2023-09-01 04:43:45,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389729473] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:45,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37417928] [2023-09-01 04:43:45,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:43:45,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:45,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:45,089 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:43:45,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 04:43:45,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:43:45,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:43:45,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 04:43:45,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:43:45,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:43:45,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37417928] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:45,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:43:45,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 23 [2023-09-01 04:43:45,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067703709] [2023-09-01 04:43:45,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:45,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:43:45,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:45,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:43:45,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-09-01 04:43:45,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-09-01 04:43:45,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 382 transitions, 5137 flow. Second operand has 8 states, 8 states have (on average 166.625) internal successors, (1333), 8 states have internal predecessors, (1333), 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) [2023-09-01 04:43:45,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:45,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-09-01 04:43:45,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:49,454 INFO L130 PetriNetUnfolder]: 16675/29008 cut-off events. [2023-09-01 04:43:49,454 INFO L131 PetriNetUnfolder]: For 66609/66627 co-relation queries the response was YES. [2023-09-01 04:43:49,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99999 conditions, 29008 events. 16675/29008 cut-off events. For 66609/66627 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 185947 event pairs, 3440 based on Foata normal form. 462/28740 useless extension candidates. Maximal degree in co-relation 99957. Up to 11782 conditions per place. [2023-09-01 04:43:49,809 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 902 selfloop transitions, 10 changer transitions 9/922 dead transitions. [2023-09-01 04:43:49,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 922 transitions, 13602 flow [2023-09-01 04:43:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 04:43:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 04:43:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1442 transitions. [2023-09-01 04:43:49,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445619335347432 [2023-09-01 04:43:49,811 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1442 transitions. [2023-09-01 04:43:49,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1442 transitions. [2023-09-01 04:43:49,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:49,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1442 transitions. [2023-09-01 04:43:49,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 180.25) internal successors, (1442), 8 states have internal predecessors, (1442), 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) [2023-09-01 04:43:49,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 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) [2023-09-01 04:43:49,815 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 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) [2023-09-01 04:43:49,816 INFO L175 Difference]: Start difference. First operand has 172 places, 382 transitions, 5137 flow. Second operand 8 states and 1442 transitions. [2023-09-01 04:43:49,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 922 transitions, 13602 flow [2023-09-01 04:43:50,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 922 transitions, 11600 flow, removed 38 selfloop flow, removed 27 redundant places. [2023-09-01 04:43:50,222 INFO L231 Difference]: Finished difference. Result has 150 places, 333 transitions, 3572 flow [2023-09-01 04:43:50,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=3510, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3572, PETRI_PLACES=150, PETRI_TRANSITIONS=333} [2023-09-01 04:43:50,223 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2023-09-01 04:43:50,223 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 333 transitions, 3572 flow [2023-09-01 04:43:50,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 166.625) internal successors, (1333), 8 states have internal predecessors, (1333), 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) [2023-09-01 04:43:50,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:50,224 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:50,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:50,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:50,424 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:50,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1778077739, now seen corresponding path program 2 times [2023-09-01 04:43:50,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:50,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472017490] [2023-09-01 04:43:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:50,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 81 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:50,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472017490] [2023-09-01 04:43:50,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472017490] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:50,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494155010] [2023-09-01 04:43:50,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:43:50,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:50,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:50,643 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:43:50,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 04:43:50,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:43:50,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:43:50,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 04:43:50,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:50,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:43:50,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494155010] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:50,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:43:50,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-09-01 04:43:50,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329843953] [2023-09-01 04:43:50,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:50,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:43:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:50,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:43:50,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-09-01 04:43:50,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-09-01 04:43:50,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 333 transitions, 3572 flow. Second operand has 8 states, 8 states have (on average 169.875) internal successors, (1359), 8 states have internal predecessors, (1359), 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) [2023-09-01 04:43:50,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:50,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-09-01 04:43:50,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:56,466 INFO L130 PetriNetUnfolder]: 25572/47823 cut-off events. [2023-09-01 04:43:56,466 INFO L131 PetriNetUnfolder]: For 108561/108561 co-relation queries the response was YES. [2023-09-01 04:43:56,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162863 conditions, 47823 events. 25572/47823 cut-off events. For 108561/108561 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 394458 event pairs, 150 based on Foata normal form. 638/47063 useless extension candidates. Maximal degree in co-relation 162835. Up to 15143 conditions per place. [2023-09-01 04:43:56,722 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 0 selfloop transitions, 0 changer transitions 1075/1075 dead transitions. [2023-09-01 04:43:56,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 1075 transitions, 12521 flow [2023-09-01 04:43:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 04:43:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 04:43:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1439 transitions. [2023-09-01 04:43:56,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543429003021148 [2023-09-01 04:43:56,724 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1439 transitions. [2023-09-01 04:43:56,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1439 transitions. [2023-09-01 04:43:56,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:56,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1439 transitions. [2023-09-01 04:43:56,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 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) [2023-09-01 04:43:56,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 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) [2023-09-01 04:43:56,727 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 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) [2023-09-01 04:43:56,728 INFO L175 Difference]: Start difference. First operand has 150 places, 333 transitions, 3572 flow. Second operand 8 states and 1439 transitions. [2023-09-01 04:43:56,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 1075 transitions, 12521 flow [2023-09-01 04:43:57,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 1075 transitions, 12300 flow, removed 63 selfloop flow, removed 5 redundant places. [2023-09-01 04:43:57,075 INFO L231 Difference]: Finished difference. Result has 145 places, 0 transitions, 0 flow [2023-09-01 04:43:57,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=145, PETRI_TRANSITIONS=0} [2023-09-01 04:43:57,076 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2023-09-01 04:43:57,076 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 0 transitions, 0 flow [2023-09-01 04:43:57,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.875) internal successors, (1359), 8 states have internal predecessors, (1359), 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) [2023-09-01 04:43:57,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-09-01 04:43:57,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-09-01 04:43:57,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-09-01 04:43:57,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-09-01 04:43:57,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-09-01 04:43:57,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-09-01 04:43:57,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-09-01 04:43:57,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-09-01 04:43:57,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-09-01 04:43:57,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-09-01 04:43:57,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-09-01 04:43:57,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-09-01 04:43:57,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-09-01 04:43:57,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-09-01 04:43:57,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-09-01 04:43:57,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-09-01 04:43:57,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-09-01 04:43:57,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-09-01 04:43:57,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:57,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-09-01 04:43:57,281 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:57,286 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 04:43:57,286 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 04:43:57,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 04:43:57 BasicIcfg [2023-09-01 04:43:57,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 04:43:57,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 04:43:57,289 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 04:43:57,289 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 04:43:57,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:43:14" (3/4) ... [2023-09-01 04:43:57,292 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 04:43:57,297 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-09-01 04:43:57,297 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-09-01 04:43:57,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 04:43:57,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 04:43:57,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 04:43:57,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 04:43:57,329 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 04:43:57,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 04:43:57,332 INFO L158 Benchmark]: Toolchain (without parser) took 43760.16ms. Allocated memory was 62.9MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 29.0MB in the beginning and 2.3GB in the end (delta: -2.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-09-01 04:43:57,332 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 48.2MB. Free memory was 26.5MB in the beginning and 26.4MB in the end (delta: 54.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:43:57,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 557.57ms. Allocated memory is still 62.9MB. Free memory was 44.3MB in the beginning and 29.1MB in the end (delta: 15.1MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-09-01 04:43:57,334 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.36ms. Allocated memory is still 62.9MB. Free memory was 29.1MB in the beginning and 26.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:43:57,334 INFO L158 Benchmark]: Boogie Preprocessor took 74.77ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 26.6MB in the beginning and 54.7MB in the end (delta: -28.2MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2023-09-01 04:43:57,335 INFO L158 Benchmark]: RCFGBuilder took 536.21ms. Allocated memory is still 75.5MB. Free memory was 54.7MB in the beginning and 36.7MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-09-01 04:43:57,335 INFO L158 Benchmark]: TraceAbstraction took 42441.31ms. Allocated memory was 75.5MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 36.2MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-09-01 04:43:57,335 INFO L158 Benchmark]: Witness Printer took 41.95ms. Allocated memory is still 3.5GB. Free memory was 2.3GB in the beginning and 2.3GB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:43:57,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 48.2MB. Free memory was 26.5MB in the beginning and 26.4MB in the end (delta: 54.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 557.57ms. Allocated memory is still 62.9MB. Free memory was 44.3MB in the beginning and 29.1MB in the end (delta: 15.1MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.36ms. Allocated memory is still 62.9MB. Free memory was 29.1MB in the beginning and 26.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.77ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 26.6MB in the beginning and 54.7MB in the end (delta: -28.2MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * RCFGBuilder took 536.21ms. Allocated memory is still 75.5MB. Free memory was 54.7MB in the beginning and 36.7MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 42441.31ms. Allocated memory was 75.5MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 36.2MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 41.95ms. Allocated memory is still 3.5GB. Free memory was 2.3GB in the beginning and 2.3GB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 162 PlacesBefore, 42 PlacesAfterwards, 165 TransitionsBefore, 40 TransitionsAfterwards, 9140 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 103 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 155 TotalNumberOfCompositions, 12517 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9577, independent: 9350, independent conditional: 0, independent unconditional: 9350, dependent: 227, dependent conditional: 0, dependent unconditional: 227, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5367, independent: 5317, independent conditional: 0, independent unconditional: 5317, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9577, independent: 4033, independent conditional: 0, independent unconditional: 4033, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 5367, unknown conditional: 0, unknown unconditional: 5367] , Statistics on independence cache: Total cache size (in pairs): 264, Positive cache size: 243, Positive conditional cache size: 0, Positive unconditional cache size: 243, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1007]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1007]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 282 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 42.2s, OverallIterations: 21, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 28.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3803 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3481 mSDsluCounter, 1338 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1231 mSDsCounter, 325 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6871 IncrementalHoareTripleChecker+Invalid, 7196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 325 mSolverCounterUnsat, 107 mSDtfsCounter, 6871 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 838 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5137occurred in iteration=19, InterpolantAutomatonStates: 196, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 1046 NumberOfCodeBlocks, 1046 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1220 ConstructedInterpolants, 0 QuantifiedInterpolants, 3674 SizeOfPredicates, 24 NumberOfNonLiveVariables, 4199 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 40 InterpolantComputations, 15 PerfectInterpolantSequences, 518/1299 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 04:43:57,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE