./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c --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/weaver/popl20-more-vector-add.wvr.c -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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --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 08:20:51,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:20:51,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:20:51,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:20:51,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:20:51,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:20:51,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:20:51,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:20:51,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:20:51,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:20:51,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:20:51,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:20:51,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:20:51,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:20:51,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:20:51,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:20:51,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:20:51,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:20:51,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:20:51,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:20:51,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:20:51,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:20:51,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:20:51,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:20:51,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:20:51,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:20:51,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:20:51,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:20:51,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:20:51,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:20:51,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:20:51,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:20:51,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:20:51,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:20:51,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:20:51,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:20:51,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:20:51,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:20:51,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:20:51,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:20:51,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:20:51,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:20:51,414 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:20:51,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:20:51,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:20:51,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:20:51,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:20:51,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:20:51,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:20:51,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:20:51,417 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:20:51,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:20:51,418 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:20:51,418 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:20:51,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:20:51,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:20:51,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:20:51,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:20:51,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:20:51,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:20:51,420 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:20:51,420 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:20:51,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:20:51,420 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:20:51,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:20:51,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:20:51,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:20:51,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:20:51,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:20:51,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:20:51,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:20:51,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:20:51,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:20:51,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:20:51,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:20:51,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:20:51,423 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:20:51,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:20:51,423 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:20:51,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:20:51,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:20:51,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:20:51,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:20:51,728 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:20:51,728 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:20:51,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-09-01 08:20:52,887 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:20:53,128 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:20:53,129 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-09-01 08:20:53,139 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66edffa59/932d606ad2eb462ea6545e813452d40a/FLAG293c02843 [2023-09-01 08:20:53,164 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66edffa59/932d606ad2eb462ea6545e813452d40a [2023-09-01 08:20:53,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:20:53,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:20:53,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:20:53,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:20:53,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:20:53,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644b7ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53, skipping insertion in model container [2023-09-01 08:20:53,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:20:53,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:20:53,389 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2023-09-01 08:20:53,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:20:53,409 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:20:53,446 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2023-09-01 08:20:53,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:20:53,468 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:20:53,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53 WrapperNode [2023-09-01 08:20:53,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:20:53,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:20:53,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:20:53,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:20:53,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,528 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 208 [2023-09-01 08:20:53,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:20:53,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:20:53,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:20:53,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:20:53,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,559 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:20:53,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:20:53,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:20:53,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:20:53,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (1/1) ... [2023-09-01 08:20:53,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:20:53,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:53,597 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 08:20:53,611 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 08:20:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:20:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:20:53,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:20:53,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:20:53,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:20:53,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:20:53,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:20:53,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:20:53,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:20:53,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:20:53,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:20:53,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:20:53,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:20:53,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:20:53,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:20:53,654 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 08:20:53,740 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:20:53,741 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:20:54,211 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:20:54,227 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:20:54,228 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-09-01 08:20:54,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:54 BoogieIcfgContainer [2023-09-01 08:20:54,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:20:54,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:20:54,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:20:54,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:20:54,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:20:53" (1/3) ... [2023-09-01 08:20:54,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5c1ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:20:54, skipping insertion in model container [2023-09-01 08:20:54,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:53" (2/3) ... [2023-09-01 08:20:54,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5c1ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:20:54, skipping insertion in model container [2023-09-01 08:20:54,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:54" (3/3) ... [2023-09-01 08:20:54,239 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-09-01 08:20:54,246 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:20:54,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:20:54,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 08:20:54,255 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:20:54,388 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:20:54,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 299 transitions, 622 flow [2023-09-01 08:20:54,567 INFO L130 PetriNetUnfolder]: 25/296 cut-off events. [2023-09-01 08:20:54,567 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:20:54,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 25/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 278 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2023-09-01 08:20:54,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 299 transitions, 622 flow [2023-09-01 08:20:54,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 263 transitions, 541 flow [2023-09-01 08:20:54,586 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:20:54,600 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 263 transitions, 541 flow [2023-09-01 08:20:54,603 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 263 transitions, 541 flow [2023-09-01 08:20:54,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 263 transitions, 541 flow [2023-09-01 08:20:54,642 INFO L130 PetriNetUnfolder]: 23/263 cut-off events. [2023-09-01 08:20:54,642 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:20:54,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 263 events. 23/263 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 273 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2023-09-01 08:20:54,648 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2023-09-01 08:21:01,822 INFO L134 LiptonReduction]: Checked pairs total: 7233 [2023-09-01 08:21:01,823 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-09-01 08:21:01,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:21:01,838 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;@222675f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:21:01,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-09-01 08:21:01,841 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:21:01,841 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:21:01,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:01,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:21:01,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:01,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:01,845 INFO L85 PathProgramCache]: Analyzing trace with hash 34577, now seen corresponding path program 1 times [2023-09-01 08:21:01,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:01,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334995225] [2023-09-01 08:21:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:01,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:02,177 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 08:21:02,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334995225] [2023-09-01 08:21:02,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334995225] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:02,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:02,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:21:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101174104] [2023-09-01 08:21:02,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:02,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:02,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:02,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:02,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:21:02,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 584 [2023-09-01 08:21:02,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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 08:21:02,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:02,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 584 [2023-09-01 08:21:02,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:02,774 INFO L130 PetriNetUnfolder]: 3070/4355 cut-off events. [2023-09-01 08:21:02,774 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-09-01 08:21:02,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8837 conditions, 4355 events. 3070/4355 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 23724 event pairs, 2068 based on Foata normal form. 0/2238 useless extension candidates. Maximal degree in co-relation 3838. Up to 2121 conditions per place. [2023-09-01 08:21:02,809 INFO L137 encePairwiseOnDemand]: 568/584 looper letters, 67 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2023-09-01 08:21:02,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 342 flow [2023-09-01 08:21:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2023-09-01 08:21:02,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4960045662100457 [2023-09-01 08:21:02,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2023-09-01 08:21:02,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2023-09-01 08:21:02,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:02,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2023-09-01 08:21:02,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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 08:21:02,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:02,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:02,842 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 111 flow. Second operand 3 states and 869 transitions. [2023-09-01 08:21:02,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 342 flow [2023-09-01 08:21:02,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 81 transitions, 324 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:21:02,851 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 178 flow [2023-09-01 08:21:02,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2023-09-01 08:21:02,855 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-09-01 08:21:02,855 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 178 flow [2023-09-01 08:21:02,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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 08:21:02,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:02,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:21:02,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:21:02,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:02,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1073294, now seen corresponding path program 1 times [2023-09-01 08:21:02,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:02,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348145422] [2023-09-01 08:21:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:02,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:02,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348145422] [2023-09-01 08:21:02,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348145422] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:02,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:02,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:21:02,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332727904] [2023-09-01 08:21:02,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:02,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:02,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:02,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:21:02,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 584 [2023-09-01 08:21:02,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 08:21:02,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:02,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 584 [2023-09-01 08:21:02,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:03,391 INFO L130 PetriNetUnfolder]: 3095/4371 cut-off events. [2023-09-01 08:21:03,391 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 08:21:03,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8807 conditions, 4371 events. 3095/4371 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 23797 event pairs, 2078 based on Foata normal form. 0/2227 useless extension candidates. Maximal degree in co-relation 4378. Up to 4247 conditions per place. [2023-09-01 08:21:03,420 INFO L137 encePairwiseOnDemand]: 579/584 looper letters, 44 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-09-01 08:21:03,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 252 flow [2023-09-01 08:21:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 828 transitions. [2023-09-01 08:21:03,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2023-09-01 08:21:03,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 828 transitions. [2023-09-01 08:21:03,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 828 transitions. [2023-09-01 08:21:03,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:03,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 828 transitions. [2023-09-01 08:21:03,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 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 08:21:03,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:03,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:03,431 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 178 flow. Second operand 3 states and 828 transitions. [2023-09-01 08:21:03,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 252 flow [2023-09-01 08:21:03,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:03,434 INFO L231 Difference]: Finished difference. Result has 46 places, 51 transitions, 148 flow [2023-09-01 08:21:03,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=46, PETRI_TRANSITIONS=51} [2023-09-01 08:21:03,435 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-09-01 08:21:03,435 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 51 transitions, 148 flow [2023-09-01 08:21:03,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 08:21:03,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:03,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:21:03,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:21:03,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:03,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1073308, now seen corresponding path program 1 times [2023-09-01 08:21:03,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:03,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178547575] [2023-09-01 08:21:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:03,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178547575] [2023-09-01 08:21:03,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178547575] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:03,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622560128] [2023-09-01 08:21:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:03,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:03,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:03,549 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 08:21:03,580 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 08:21:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:03,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:03,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:03,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:03,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622560128] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:03,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:03,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:21:03,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885528922] [2023-09-01 08:21:03,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:03,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:21:03,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:03,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:21:03,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:21:03,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 584 [2023-09-01 08:21:03,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 51 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 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 08:21:03,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:03,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 584 [2023-09-01 08:21:03,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:04,946 INFO L130 PetriNetUnfolder]: 7636/10840 cut-off events. [2023-09-01 08:21:04,947 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-09-01 08:21:04,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21770 conditions, 10840 events. 7636/10840 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 67119 event pairs, 5155 based on Foata normal form. 0/5699 useless extension candidates. Maximal degree in co-relation 21762. Up to 2130 conditions per place. [2023-09-01 08:21:05,024 INFO L137 encePairwiseOnDemand]: 572/584 looper letters, 141 selfloop transitions, 29 changer transitions 0/176 dead transitions. [2023-09-01 08:21:05,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 176 transitions, 804 flow [2023-09-01 08:21:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:21:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:21:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1754 transitions. [2023-09-01 08:21:05,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005707762557078 [2023-09-01 08:21:05,031 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1754 transitions. [2023-09-01 08:21:05,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1754 transitions. [2023-09-01 08:21:05,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:05,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1754 transitions. [2023-09-01 08:21:05,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 292.3333333333333) internal successors, (1754), 6 states have internal predecessors, (1754), 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 08:21:05,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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 08:21:05,044 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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 08:21:05,044 INFO L175 Difference]: Start difference. First operand has 46 places, 51 transitions, 148 flow. Second operand 6 states and 1754 transitions. [2023-09-01 08:21:05,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 176 transitions, 804 flow [2023-09-01 08:21:05,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 176 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:05,051 INFO L231 Difference]: Finished difference. Result has 53 places, 72 transitions, 354 flow [2023-09-01 08:21:05,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=53, PETRI_TRANSITIONS=72} [2023-09-01 08:21:05,052 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-09-01 08:21:05,052 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 72 transitions, 354 flow [2023-09-01 08:21:05,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 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 08:21:05,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:05,054 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:21:05,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 08:21:05,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:05,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:05,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1911127647, now seen corresponding path program 2 times [2023-09-01 08:21:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:05,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181085540] [2023-09-01 08:21:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:05,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:05,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:05,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181085540] [2023-09-01 08:21:05,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181085540] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:05,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770042974] [2023-09-01 08:21:05,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:21:05,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:05,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:05,397 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 08:21:05,432 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 08:21:05,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:21:05,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:21:05,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:21:05,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:21:05,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:21:05,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770042974] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:05,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:21:05,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:21:05,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671611264] [2023-09-01 08:21:05,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:05,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:05,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:05,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:05,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:21:05,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 584 [2023-09-01 08:21:05,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 72 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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 08:21:05,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:05,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 584 [2023-09-01 08:21:05,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:06,422 INFO L130 PetriNetUnfolder]: 7736/10919 cut-off events. [2023-09-01 08:21:06,422 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-09-01 08:21:06,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22033 conditions, 10919 events. 7736/10919 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 67117 event pairs, 5195 based on Foata normal form. 1/5564 useless extension candidates. Maximal degree in co-relation 22021. Up to 10604 conditions per place. [2023-09-01 08:21:06,579 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 59 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-09-01 08:21:06,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 474 flow [2023-09-01 08:21:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2023-09-01 08:21:06,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4771689497716895 [2023-09-01 08:21:06,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2023-09-01 08:21:06,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2023-09-01 08:21:06,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:06,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2023-09-01 08:21:06,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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 08:21:06,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:06,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:06,590 INFO L175 Difference]: Start difference. First operand has 53 places, 72 transitions, 354 flow. Second operand 3 states and 836 transitions. [2023-09-01 08:21:06,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 474 flow [2023-09-01 08:21:06,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 433 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:06,596 INFO L231 Difference]: Finished difference. Result has 53 places, 71 transitions, 315 flow [2023-09-01 08:21:06,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=53, PETRI_TRANSITIONS=71} [2023-09-01 08:21:06,598 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-09-01 08:21:06,598 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 71 transitions, 315 flow [2023-09-01 08:21:06,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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 08:21:06,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:06,599 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:21:06,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:21:06,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 08:21:06,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:06,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash 57314924, now seen corresponding path program 1 times [2023-09-01 08:21:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:06,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238184328] [2023-09-01 08:21:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:06,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:21:06,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:06,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238184328] [2023-09-01 08:21:06,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238184328] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:06,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:06,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:21:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530603874] [2023-09-01 08:21:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:06,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:21:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:21:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:21:06,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 584 [2023-09-01 08:21:06,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 71 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 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 08:21:06,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:06,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 584 [2023-09-01 08:21:06,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:07,889 INFO L130 PetriNetUnfolder]: 7636/10842 cut-off events. [2023-09-01 08:21:07,890 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-09-01 08:21:07,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21823 conditions, 10842 events. 7636/10842 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 66000 event pairs, 5155 based on Foata normal form. 3/5793 useless extension candidates. Maximal degree in co-relation 21810. Up to 8360 conditions per place. [2023-09-01 08:21:07,970 INFO L137 encePairwiseOnDemand]: 575/584 looper letters, 73 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2023-09-01 08:21:07,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 100 transitions, 571 flow [2023-09-01 08:21:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:21:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:21:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1084 transitions. [2023-09-01 08:21:07,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464041095890411 [2023-09-01 08:21:07,974 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1084 transitions. [2023-09-01 08:21:07,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1084 transitions. [2023-09-01 08:21:07,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:07,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1084 transitions. [2023-09-01 08:21:07,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 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 08:21:07,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 08:21:07,984 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 08:21:07,984 INFO L175 Difference]: Start difference. First operand has 53 places, 71 transitions, 315 flow. Second operand 4 states and 1084 transitions. [2023-09-01 08:21:07,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 100 transitions, 571 flow [2023-09-01 08:21:07,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 100 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:07,989 INFO L231 Difference]: Finished difference. Result has 55 places, 74 transitions, 382 flow [2023-09-01 08:21:07,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=55, PETRI_TRANSITIONS=74} [2023-09-01 08:21:07,990 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-09-01 08:21:07,990 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 74 transitions, 382 flow [2023-09-01 08:21:07,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 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 08:21:07,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:07,990 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 08:21:07,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:21:07,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:07,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:07,991 INFO L85 PathProgramCache]: Analyzing trace with hash -710403313, now seen corresponding path program 1 times [2023-09-01 08:21:07,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:07,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414055656] [2023-09-01 08:21:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:07,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:21:08,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:08,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414055656] [2023-09-01 08:21:08,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414055656] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:08,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780949542] [2023-09-01 08:21:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:08,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:08,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:08,125 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 08:21:08,148 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 08:21:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:08,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 08:21:08,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:21:08,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:21:08,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780949542] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:08,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:08,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-09-01 08:21:08,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602852796] [2023-09-01 08:21:08,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:08,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:21:08,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:08,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:21:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-09-01 08:21:08,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 584 [2023-09-01 08:21:08,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 74 transitions, 382 flow. Second operand has 14 states, 14 states have (on average 249.28571428571428) internal successors, (3490), 14 states have internal predecessors, (3490), 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 08:21:08,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:08,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 584 [2023-09-01 08:21:08,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:10,149 INFO L130 PetriNetUnfolder]: 9157/13006 cut-off events. [2023-09-01 08:21:10,150 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-09-01 08:21:10,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26216 conditions, 13006 events. 9157/13006 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 78734 event pairs, 6184 based on Foata normal form. 3/6964 useless extension candidates. Maximal degree in co-relation 26202. Up to 6252 conditions per place. [2023-09-01 08:21:10,213 INFO L137 encePairwiseOnDemand]: 572/584 looper letters, 116 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2023-09-01 08:21:10,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 160 transitions, 934 flow [2023-09-01 08:21:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:21:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:21:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2623 transitions. [2023-09-01 08:21:10,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44914383561643834 [2023-09-01 08:21:10,221 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2623 transitions. [2023-09-01 08:21:10,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2623 transitions. [2023-09-01 08:21:10,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:10,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2623 transitions. [2023-09-01 08:21:10,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 262.3) internal successors, (2623), 10 states have internal predecessors, (2623), 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 08:21:10,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 584.0) internal successors, (6424), 11 states have internal predecessors, (6424), 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 08:21:10,236 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 584.0) internal successors, (6424), 11 states have internal predecessors, (6424), 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 08:21:10,236 INFO L175 Difference]: Start difference. First operand has 55 places, 74 transitions, 382 flow. Second operand 10 states and 2623 transitions. [2023-09-01 08:21:10,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 160 transitions, 934 flow [2023-09-01 08:21:10,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 160 transitions, 902 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:10,241 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 532 flow [2023-09-01 08:21:10,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=532, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2023-09-01 08:21:10,243 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2023-09-01 08:21:10,244 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 532 flow [2023-09-01 08:21:10,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 249.28571428571428) internal successors, (3490), 14 states have internal predecessors, (3490), 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 08:21:10,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:10,245 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-09-01 08:21:10,255 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 08:21:10,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:10,452 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:10,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1260135116, now seen corresponding path program 2 times [2023-09-01 08:21:10,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:10,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196778048] [2023-09-01 08:21:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:10,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:21:10,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:10,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196778048] [2023-09-01 08:21:10,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196778048] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:10,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972116439] [2023-09-01 08:21:10,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:21:10,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:10,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:10,606 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 08:21:10,608 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 08:21:10,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:21:10,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:21:10,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:21:10,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:21:10,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:21:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972116439] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:10,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:21:10,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-09-01 08:21:10,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252985922] [2023-09-01 08:21:10,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:10,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:21:10,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:10,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:21:10,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:21:10,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 584 [2023-09-01 08:21:10,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 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 08:21:10,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:10,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 584 [2023-09-01 08:21:10,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:11,631 INFO L130 PetriNetUnfolder]: 9282/13103 cut-off events. [2023-09-01 08:21:11,631 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-09-01 08:21:11,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26499 conditions, 13103 events. 9282/13103 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 79406 event pairs, 6234 based on Foata normal form. 3/6686 useless extension candidates. Maximal degree in co-relation 26482. Up to 12731 conditions per place. [2023-09-01 08:21:11,701 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 74 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-09-01 08:21:11,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 643 flow [2023-09-01 08:21:11,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-09-01 08:21:11,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731735159817352 [2023-09-01 08:21:11,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-09-01 08:21:11,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-09-01 08:21:11,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:11,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-09-01 08:21:11,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 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 08:21:11,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:11,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:11,710 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 532 flow. Second operand 3 states and 829 transitions. [2023-09-01 08:21:11,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 643 flow [2023-09-01 08:21:11,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 526 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-09-01 08:21:11,713 INFO L231 Difference]: Finished difference. Result has 57 places, 81 transitions, 378 flow [2023-09-01 08:21:11,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=57, PETRI_TRANSITIONS=81} [2023-09-01 08:21:11,713 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-09-01 08:21:11,714 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 81 transitions, 378 flow [2023-09-01 08:21:11,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 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 08:21:11,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:11,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:11,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 08:21:11,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:11,920 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:11,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1302289154, now seen corresponding path program 1 times [2023-09-01 08:21:11,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:11,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281904562] [2023-09-01 08:21:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:11,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:11,987 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 08:21:11,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:11,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281904562] [2023-09-01 08:21:11,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281904562] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:11,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:11,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:21:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818315440] [2023-09-01 08:21:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:11,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:11,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:21:12,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-09-01 08:21:12,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 81 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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 08:21:12,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:12,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-09-01 08:21:12,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:13,279 INFO L130 PetriNetUnfolder]: 14424/21035 cut-off events. [2023-09-01 08:21:13,279 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-09-01 08:21:13,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41911 conditions, 21035 events. 14424/21035 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 143594 event pairs, 6582 based on Foata normal form. 0/12047 useless extension candidates. Maximal degree in co-relation 41897. Up to 12756 conditions per place. [2023-09-01 08:21:13,410 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 96 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-09-01 08:21:13,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 103 transitions, 623 flow [2023-09-01 08:21:13,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2023-09-01 08:21:13,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4994292237442922 [2023-09-01 08:21:13,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2023-09-01 08:21:13,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2023-09-01 08:21:13,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:13,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2023-09-01 08:21:13,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 states have internal predecessors, (875), 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 08:21:13,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:13,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:13,421 INFO L175 Difference]: Start difference. First operand has 57 places, 81 transitions, 378 flow. Second operand 3 states and 875 transitions. [2023-09-01 08:21:13,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 103 transitions, 623 flow [2023-09-01 08:21:13,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:13,424 INFO L231 Difference]: Finished difference. Result has 59 places, 82 transitions, 391 flow [2023-09-01 08:21:13,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=59, PETRI_TRANSITIONS=82} [2023-09-01 08:21:13,427 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-09-01 08:21:13,427 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 82 transitions, 391 flow [2023-09-01 08:21:13,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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 08:21:13,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:13,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:13,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:21:13,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:13,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:13,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1618201434, now seen corresponding path program 1 times [2023-09-01 08:21:13,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:13,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856193795] [2023-09-01 08:21:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:13,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:13,480 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 08:21:13,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:13,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856193795] [2023-09-01 08:21:13,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856193795] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:13,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:13,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:21:13,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498340737] [2023-09-01 08:21:13,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:13,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:13,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:13,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:21:13,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-09-01 08:21:13,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 82 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 08:21:13,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:13,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-09-01 08:21:13,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:15,263 INFO L130 PetriNetUnfolder]: 18384/27617 cut-off events. [2023-09-01 08:21:15,263 INFO L131 PetriNetUnfolder]: For 2054/2054 co-relation queries the response was YES. [2023-09-01 08:21:15,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58502 conditions, 27617 events. 18384/27617 cut-off events. For 2054/2054 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 203265 event pairs, 9462 based on Foata normal form. 0/16751 useless extension candidates. Maximal degree in co-relation 58487. Up to 17220 conditions per place. [2023-09-01 08:21:15,446 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 96 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-09-01 08:21:15,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 642 flow [2023-09-01 08:21:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-09-01 08:21:15,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982876712328767 [2023-09-01 08:21:15,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-09-01 08:21:15,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-09-01 08:21:15,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:15,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-09-01 08:21:15,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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 08:21:15,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:15,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:15,471 INFO L175 Difference]: Start difference. First operand has 59 places, 82 transitions, 391 flow. Second operand 3 states and 873 transitions. [2023-09-01 08:21:15,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 642 flow [2023-09-01 08:21:15,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:15,475 INFO L231 Difference]: Finished difference. Result has 61 places, 83 transitions, 403 flow [2023-09-01 08:21:15,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=61, PETRI_TRANSITIONS=83} [2023-09-01 08:21:15,477 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-09-01 08:21:15,477 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 83 transitions, 403 flow [2023-09-01 08:21:15,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 08:21:15,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:15,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:15,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:21:15,478 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:15,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash 57525530, now seen corresponding path program 1 times [2023-09-01 08:21:15,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:15,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861135672] [2023-09-01 08:21:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:15,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:15,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861135672] [2023-09-01 08:21:15,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861135672] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:15,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:15,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:21:15,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272188633] [2023-09-01 08:21:15,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:15,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:15,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:15,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:15,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:21:15,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-09-01 08:21:15,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 83 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 08:21:15,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:15,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-09-01 08:21:15,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:16,872 INFO L130 PetriNetUnfolder]: 16674/25019 cut-off events. [2023-09-01 08:21:16,872 INFO L131 PetriNetUnfolder]: For 3662/3662 co-relation queries the response was YES. [2023-09-01 08:21:16,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56355 conditions, 25019 events. 16674/25019 cut-off events. For 3662/3662 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 185589 event pairs, 876 based on Foata normal form. 0/15593 useless extension candidates. Maximal degree in co-relation 56339. Up to 21900 conditions per place. [2023-09-01 08:21:17,017 INFO L137 encePairwiseOnDemand]: 582/584 looper letters, 92 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-09-01 08:21:17,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 629 flow [2023-09-01 08:21:17,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 866 transitions. [2023-09-01 08:21:17,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942922374429224 [2023-09-01 08:21:17,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 866 transitions. [2023-09-01 08:21:17,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 866 transitions. [2023-09-01 08:21:17,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:17,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 866 transitions. [2023-09-01 08:21:17,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.6666666666667) internal successors, (866), 3 states have internal predecessors, (866), 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 08:21:17,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:17,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 08:21:17,026 INFO L175 Difference]: Start difference. First operand has 61 places, 83 transitions, 403 flow. Second operand 3 states and 866 transitions. [2023-09-01 08:21:17,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 629 flow [2023-09-01 08:21:17,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:17,032 INFO L231 Difference]: Finished difference. Result has 61 places, 82 transitions, 399 flow [2023-09-01 08:21:17,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=61, PETRI_TRANSITIONS=82} [2023-09-01 08:21:17,033 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-09-01 08:21:17,033 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 82 transitions, 399 flow [2023-09-01 08:21:17,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 08:21:17,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:17,034 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:17,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:21:17,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:17,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:17,035 INFO L85 PathProgramCache]: Analyzing trace with hash 57525531, now seen corresponding path program 1 times [2023-09-01 08:21:17,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:17,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118726685] [2023-09-01 08:21:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:17,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:17,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118726685] [2023-09-01 08:21:17,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118726685] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:17,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543906304] [2023-09-01 08:21:17,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:17,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:17,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:17,101 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 08:21:17,125 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 08:21:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:17,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:21:17,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:21:17,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:21:17,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543906304] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:17,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:21:17,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-09-01 08:21:17,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763045193] [2023-09-01 08:21:17,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:17,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:21:17,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:17,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:21:17,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:21:17,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 584 [2023-09-01 08:21:17,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 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 08:21:17,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:17,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 584 [2023-09-01 08:21:17,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:18,815 INFO L130 PetriNetUnfolder]: 13679/20449 cut-off events. [2023-09-01 08:21:18,816 INFO L131 PetriNetUnfolder]: For 4443/4443 co-relation queries the response was YES. [2023-09-01 08:21:18,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46615 conditions, 20449 events. 13679/20449 cut-off events. For 4443/4443 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 143409 event pairs, 10281 based on Foata normal form. 0/12748 useless extension candidates. Maximal degree in co-relation 46599. Up to 18154 conditions per place. [2023-09-01 08:21:18,907 INFO L137 encePairwiseOnDemand]: 573/584 looper letters, 87 selfloop transitions, 30 changer transitions 0/122 dead transitions. [2023-09-01 08:21:18,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 122 transitions, 748 flow [2023-09-01 08:21:18,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:21:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:21:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1348 transitions. [2023-09-01 08:21:18,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46164383561643835 [2023-09-01 08:21:18,912 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1348 transitions. [2023-09-01 08:21:18,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1348 transitions. [2023-09-01 08:21:18,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:18,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1348 transitions. [2023-09-01 08:21:18,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.6) internal successors, (1348), 5 states have internal predecessors, (1348), 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 08:21:18,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 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 08:21:18,919 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 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 08:21:18,919 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 399 flow. Second operand 5 states and 1348 transitions. [2023-09-01 08:21:18,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 122 transitions, 748 flow [2023-09-01 08:21:18,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 122 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:18,925 INFO L231 Difference]: Finished difference. Result has 66 places, 83 transitions, 476 flow [2023-09-01 08:21:18,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=66, PETRI_TRANSITIONS=83} [2023-09-01 08:21:18,926 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-09-01 08:21:18,926 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 83 transitions, 476 flow [2023-09-01 08:21:18,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 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 08:21:18,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:18,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:18,933 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 08:21:19,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-09-01 08:21:19,133 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:19,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash -685852427, now seen corresponding path program 1 times [2023-09-01 08:21:19,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:19,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117850231] [2023-09-01 08:21:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:19,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:19,186 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 08:21:19,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:19,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117850231] [2023-09-01 08:21:19,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117850231] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:19,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:19,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:21:19,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357973033] [2023-09-01 08:21:19,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:19,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:21:19,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:19,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:21:19,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:21:19,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 584 [2023-09-01 08:21:19,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 83 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 273.25) internal successors, (1093), 4 states have internal predecessors, (1093), 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 08:21:19,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:19,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 584 [2023-09-01 08:21:19,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:20,178 INFO L130 PetriNetUnfolder]: 10564/16453 cut-off events. [2023-09-01 08:21:20,179 INFO L131 PetriNetUnfolder]: For 3534/3631 co-relation queries the response was YES. [2023-09-01 08:21:20,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37287 conditions, 16453 events. 10564/16453 cut-off events. For 3534/3631 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 119580 event pairs, 1954 based on Foata normal form. 97/12124 useless extension candidates. Maximal degree in co-relation 37268. Up to 11500 conditions per place. [2023-09-01 08:21:20,284 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 90 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-09-01 08:21:20,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 98 transitions, 708 flow [2023-09-01 08:21:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:21:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:21:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1128 transitions. [2023-09-01 08:21:20,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828767123287671 [2023-09-01 08:21:20,287 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1128 transitions. [2023-09-01 08:21:20,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1128 transitions. [2023-09-01 08:21:20,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:20,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1128 transitions. [2023-09-01 08:21:20,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 08:21:20,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 08:21:20,293 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 08:21:20,293 INFO L175 Difference]: Start difference. First operand has 66 places, 83 transitions, 476 flow. Second operand 4 states and 1128 transitions. [2023-09-01 08:21:20,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 98 transitions, 708 flow [2023-09-01 08:21:20,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 98 transitions, 657 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:20,303 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 427 flow [2023-09-01 08:21:20,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2023-09-01 08:21:20,303 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-09-01 08:21:20,303 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 427 flow [2023-09-01 08:21:20,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 273.25) internal successors, (1093), 4 states have internal predecessors, (1093), 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 08:21:20,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:20,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:20,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:21:20,304 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:20,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash -685852429, now seen corresponding path program 1 times [2023-09-01 08:21:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217955204] [2023-09-01 08:21:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:20,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:20,382 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 08:21:20,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:20,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217955204] [2023-09-01 08:21:20,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217955204] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:20,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:20,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:21:20,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113025358] [2023-09-01 08:21:20,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:20,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:21:20,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:20,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:21:20,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:21:20,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 584 [2023-09-01 08:21:20,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 254.6) internal successors, (1273), 5 states have internal predecessors, (1273), 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 08:21:20,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:20,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 584 [2023-09-01 08:21:20,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:21,797 INFO L130 PetriNetUnfolder]: 10464/15946 cut-off events. [2023-09-01 08:21:21,797 INFO L131 PetriNetUnfolder]: For 3937/4018 co-relation queries the response was YES. [2023-09-01 08:21:21,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37390 conditions, 15946 events. 10464/15946 cut-off events. For 3937/4018 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 111231 event pairs, 8502 based on Foata normal form. 81/11730 useless extension candidates. Maximal degree in co-relation 37371. Up to 14454 conditions per place. [2023-09-01 08:21:21,894 INFO L137 encePairwiseOnDemand]: 572/584 looper letters, 73 selfloop transitions, 31 changer transitions 6/116 dead transitions. [2023-09-01 08:21:21,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 116 transitions, 747 flow [2023-09-01 08:21:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:21:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:21:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1336 transitions. [2023-09-01 08:21:21,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575342465753425 [2023-09-01 08:21:21,898 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1336 transitions. [2023-09-01 08:21:21,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1336 transitions. [2023-09-01 08:21:21,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:21,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1336 transitions. [2023-09-01 08:21:21,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 267.2) internal successors, (1336), 5 states have internal predecessors, (1336), 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 08:21:21,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 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 08:21:21,906 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 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 08:21:21,906 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 427 flow. Second operand 5 states and 1336 transitions. [2023-09-01 08:21:21,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 116 transitions, 747 flow [2023-09-01 08:21:21,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 743 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:21,968 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 507 flow [2023-09-01 08:21:21,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2023-09-01 08:21:21,969 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2023-09-01 08:21:21,970 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 507 flow [2023-09-01 08:21:21,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.6) internal successors, (1273), 5 states have internal predecessors, (1273), 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 08:21:21,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:21,970 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:21,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:21:21,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:21,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:21,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1128676485, now seen corresponding path program 1 times [2023-09-01 08:21:21,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:21,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311847845] [2023-09-01 08:21:21,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:21,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:22,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:22,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311847845] [2023-09-01 08:21:22,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311847845] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:22,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624919020] [2023-09-01 08:21:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:22,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:22,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:22,057 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 08:21:22,080 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 08:21:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:22,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:22,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:22,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:22,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624919020] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:22,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:22,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:21:22,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522854177] [2023-09-01 08:21:22,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:22,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:21:22,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:22,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:21:22,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:21:22,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-09-01 08:21:22,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 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 08:21:22,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:22,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-09-01 08:21:22,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:25,102 INFO L130 PetriNetUnfolder]: 26719/39993 cut-off events. [2023-09-01 08:21:25,103 INFO L131 PetriNetUnfolder]: For 14131/14310 co-relation queries the response was YES. [2023-09-01 08:21:25,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97741 conditions, 39993 events. 26719/39993 cut-off events. For 14131/14310 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 292225 event pairs, 4855 based on Foata normal form. 179/31754 useless extension candidates. Maximal degree in co-relation 97720. Up to 9741 conditions per place. [2023-09-01 08:21:25,345 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 171 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2023-09-01 08:21:25,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 186 transitions, 1212 flow [2023-09-01 08:21:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:21:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:21:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2028 transitions. [2023-09-01 08:21:25,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49608610567514677 [2023-09-01 08:21:25,350 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2028 transitions. [2023-09-01 08:21:25,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2028 transitions. [2023-09-01 08:21:25,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:25,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2028 transitions. [2023-09-01 08:21:25,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.7142857142857) internal successors, (2028), 7 states have internal predecessors, (2028), 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 08:21:25,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 584.0) internal successors, (4672), 8 states have internal predecessors, (4672), 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 08:21:25,360 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 584.0) internal successors, (4672), 8 states have internal predecessors, (4672), 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 08:21:25,360 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 507 flow. Second operand 7 states and 2028 transitions. [2023-09-01 08:21:25,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 186 transitions, 1212 flow [2023-09-01 08:21:25,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 186 transitions, 1161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:25,384 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 515 flow [2023-09-01 08:21:25,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2023-09-01 08:21:25,385 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2023-09-01 08:21:25,386 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 515 flow [2023-09-01 08:21:25,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 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 08:21:25,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:25,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:25,393 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 08:21:25,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:25,592 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:25,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1128676483, now seen corresponding path program 1 times [2023-09-01 08:21:25,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:25,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527270228] [2023-09-01 08:21:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:25,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527270228] [2023-09-01 08:21:25,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527270228] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:25,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4600739] [2023-09-01 08:21:25,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:25,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:25,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:25,708 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 08:21:25,711 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 08:21:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:25,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:25,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:25,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:21:25,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4600739] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:25,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:21:25,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:21:25,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310877908] [2023-09-01 08:21:25,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:25,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:21:25,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:25,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:21:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:21:25,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-09-01 08:21:25,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 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 08:21:25,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:25,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-09-01 08:21:25,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:28,355 INFO L130 PetriNetUnfolder]: 23844/36620 cut-off events. [2023-09-01 08:21:28,355 INFO L131 PetriNetUnfolder]: For 34127/34297 co-relation queries the response was YES. [2023-09-01 08:21:28,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94557 conditions, 36620 events. 23844/36620 cut-off events. For 34127/34297 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 280884 event pairs, 634 based on Foata normal form. 1266/32385 useless extension candidates. Maximal degree in co-relation 94534. Up to 26369 conditions per place. [2023-09-01 08:21:28,564 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 114 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-09-01 08:21:28,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 122 transitions, 843 flow [2023-09-01 08:21:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:21:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:21:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1152 transitions. [2023-09-01 08:21:28,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2023-09-01 08:21:28,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1152 transitions. [2023-09-01 08:21:28,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1152 transitions. [2023-09-01 08:21:28,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:28,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1152 transitions. [2023-09-01 08:21:28,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 08:21:28,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 08:21:28,573 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 08:21:28,573 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 515 flow. Second operand 4 states and 1152 transitions. [2023-09-01 08:21:28,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 122 transitions, 843 flow [2023-09-01 08:21:28,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 835 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:28,721 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 484 flow [2023-09-01 08:21:28,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=484, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2023-09-01 08:21:28,722 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2023-09-01 08:21:28,722 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 484 flow [2023-09-01 08:21:28,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 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 08:21:28,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:28,723 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:28,728 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 08:21:28,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:28,928 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:28,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:28,929 INFO L85 PathProgramCache]: Analyzing trace with hash -93188449, now seen corresponding path program 1 times [2023-09-01 08:21:28,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:28,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740523391] [2023-09-01 08:21:28,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:28,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:21:29,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740523391] [2023-09-01 08:21:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740523391] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:29,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421925079] [2023-09-01 08:21:29,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:29,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:29,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:29,012 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 08:21:29,040 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 08:21:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:29,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:21:29,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:21:29,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:21:29,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421925079] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:29,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:29,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-09-01 08:21:29,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407674538] [2023-09-01 08:21:29,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:29,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:21:29,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:29,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:21:29,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:21:29,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 584 [2023-09-01 08:21:29,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 484 flow. Second operand has 13 states, 13 states have (on average 246.84615384615384) internal successors, (3209), 13 states have internal predecessors, (3209), 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 08:21:29,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:29,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 584 [2023-09-01 08:21:29,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:32,644 INFO L130 PetriNetUnfolder]: 28208/42429 cut-off events. [2023-09-01 08:21:32,644 INFO L131 PetriNetUnfolder]: For 31219/31219 co-relation queries the response was YES. [2023-09-01 08:21:32,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111700 conditions, 42429 events. 28208/42429 cut-off events. For 31219/31219 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 316198 event pairs, 5255 based on Foata normal form. 388/36700 useless extension candidates. Maximal degree in co-relation 111676. Up to 7895 conditions per place. [2023-09-01 08:21:32,987 INFO L137 encePairwiseOnDemand]: 570/584 looper letters, 267 selfloop transitions, 42 changer transitions 5/319 dead transitions. [2023-09-01 08:21:32,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 319 transitions, 2065 flow [2023-09-01 08:21:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 08:21:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 08:21:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4151 transitions. [2023-09-01 08:21:32,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442422945205479 [2023-09-01 08:21:32,996 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4151 transitions. [2023-09-01 08:21:32,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4151 transitions. [2023-09-01 08:21:32,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:32,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4151 transitions. [2023-09-01 08:21:33,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 259.4375) internal successors, (4151), 16 states have internal predecessors, (4151), 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 08:21:33,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 584.0) internal successors, (9928), 17 states have internal predecessors, (9928), 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 08:21:33,012 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 584.0) internal successors, (9928), 17 states have internal predecessors, (9928), 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 08:21:33,013 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 484 flow. Second operand 16 states and 4151 transitions. [2023-09-01 08:21:33,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 319 transitions, 2065 flow [2023-09-01 08:21:33,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 319 transitions, 2050 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:33,072 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 602 flow [2023-09-01 08:21:33,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=602, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2023-09-01 08:21:33,073 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2023-09-01 08:21:33,073 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 602 flow [2023-09-01 08:21:33,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 246.84615384615384) internal successors, (3209), 13 states have internal predecessors, (3209), 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 08:21:33,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:33,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:33,084 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 08:21:33,279 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 08:21:33,279 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:33,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1063018513, now seen corresponding path program 1 times [2023-09-01 08:21:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331716835] [2023-09-01 08:21:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:33,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:21:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:33,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331716835] [2023-09-01 08:21:33,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331716835] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:33,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317552902] [2023-09-01 08:21:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:33,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:33,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:33,413 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 08:21:33,414 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 08:21:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:33,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:33,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:21:33,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:21:33,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317552902] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:33,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:21:33,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-09-01 08:21:33,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902007513] [2023-09-01 08:21:33,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:33,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:21:33,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:33,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:21:33,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:21:33,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 584 [2023-09-01 08:21:33,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 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 08:21:33,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:33,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 584 [2023-09-01 08:21:33,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:36,365 INFO L130 PetriNetUnfolder]: 19894/32028 cut-off events. [2023-09-01 08:21:36,366 INFO L131 PetriNetUnfolder]: For 30829/31469 co-relation queries the response was YES. [2023-09-01 08:21:36,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88066 conditions, 32028 events. 19894/32028 cut-off events. For 30829/31469 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 248246 event pairs, 12834 based on Foata normal form. 640/29374 useless extension candidates. Maximal degree in co-relation 88039. Up to 22853 conditions per place. [2023-09-01 08:21:36,619 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 102 selfloop transitions, 5 changer transitions 4/118 dead transitions. [2023-09-01 08:21:36,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 118 transitions, 940 flow [2023-09-01 08:21:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:21:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:21:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1117 transitions. [2023-09-01 08:21:36,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781678082191781 [2023-09-01 08:21:36,621 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1117 transitions. [2023-09-01 08:21:36,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1117 transitions. [2023-09-01 08:21:36,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:36,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1117 transitions. [2023-09-01 08:21:36,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.25) internal successors, (1117), 4 states have internal predecessors, (1117), 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 08:21:36,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 08:21:36,626 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 08:21:36,626 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 602 flow. Second operand 4 states and 1117 transitions. [2023-09-01 08:21:36,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 118 transitions, 940 flow [2023-09-01 08:21:36,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 874 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-09-01 08:21:36,671 INFO L231 Difference]: Finished difference. Result has 89 places, 91 transitions, 541 flow [2023-09-01 08:21:36,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=541, PETRI_PLACES=89, PETRI_TRANSITIONS=91} [2023-09-01 08:21:36,672 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2023-09-01 08:21:36,672 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 91 transitions, 541 flow [2023-09-01 08:21:36,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 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 08:21:36,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:36,673 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:36,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:21:36,885 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 08:21:36,885 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:36,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1793209828, now seen corresponding path program 2 times [2023-09-01 08:21:36,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:36,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92655843] [2023-09-01 08:21:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:36,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:36,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92655843] [2023-09-01 08:21:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92655843] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305658799] [2023-09-01 08:21:36,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:21:36,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:36,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:36,995 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 08:21:37,004 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 08:21:37,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:21:37,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:21:37,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:37,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-09-01 08:21:37,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-09-01 08:21:37,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305658799] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:37,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:37,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-09-01 08:21:37,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635117125] [2023-09-01 08:21:37,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:37,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 08:21:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:37,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 08:21:37,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:21:37,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 584 [2023-09-01 08:21:37,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 541 flow. Second operand has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 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 08:21:37,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:37,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 584 [2023-09-01 08:21:37,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:40,785 INFO L130 PetriNetUnfolder]: 27494/42118 cut-off events. [2023-09-01 08:21:40,785 INFO L131 PetriNetUnfolder]: For 58166/58999 co-relation queries the response was YES. [2023-09-01 08:21:40,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118840 conditions, 42118 events. 27494/42118 cut-off events. For 58166/58999 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 316605 event pairs, 2724 based on Foata normal form. 1897/39549 useless extension candidates. Maximal degree in co-relation 118813. Up to 6048 conditions per place. [2023-09-01 08:21:41,058 INFO L137 encePairwiseOnDemand]: 579/584 looper letters, 123 selfloop transitions, 9 changer transitions 98/235 dead transitions. [2023-09-01 08:21:41,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 235 transitions, 1635 flow [2023-09-01 08:21:41,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:21:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:21:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2531 transitions. [2023-09-01 08:21:41,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481544901065449 [2023-09-01 08:21:41,063 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2531 transitions. [2023-09-01 08:21:41,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2531 transitions. [2023-09-01 08:21:41,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:41,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2531 transitions. [2023-09-01 08:21:41,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 281.22222222222223) internal successors, (2531), 9 states have internal predecessors, (2531), 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 08:21:41,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 584.0) internal successors, (5840), 10 states have internal predecessors, (5840), 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 08:21:41,074 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 584.0) internal successors, (5840), 10 states have internal predecessors, (5840), 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 08:21:41,075 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 541 flow. Second operand 9 states and 2531 transitions. [2023-09-01 08:21:41,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 235 transitions, 1635 flow [2023-09-01 08:21:41,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 235 transitions, 1565 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-09-01 08:21:41,259 INFO L231 Difference]: Finished difference. Result has 88 places, 60 transitions, 334 flow [2023-09-01 08:21:41,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=334, PETRI_PLACES=88, PETRI_TRANSITIONS=60} [2023-09-01 08:21:41,259 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2023-09-01 08:21:41,259 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 60 transitions, 334 flow [2023-09-01 08:21:41,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 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 08:21:41,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:41,260 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:41,266 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 08:21:41,461 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 08:21:41,462 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-09-01 08:21:41,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1639180099, now seen corresponding path program 2 times [2023-09-01 08:21:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:41,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089934790] [2023-09-01 08:21:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:21:41,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:41,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089934790] [2023-09-01 08:21:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089934790] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042531484] [2023-09-01 08:21:41,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:21:41,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:41,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:41,671 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 08:21:41,675 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 08:21:41,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:21:41,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:21:41,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:41,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-09-01 08:21:41,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-09-01 08:21:41,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042531484] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:41,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:41,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-09-01 08:21:41,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76788401] [2023-09-01 08:21:41,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:41,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:21:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:41,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:21:41,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:21:42,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 584 [2023-09-01 08:21:42,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 60 transitions, 334 flow. Second operand has 10 states, 10 states have (on average 247.3) internal successors, (2473), 10 states have internal predecessors, (2473), 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 08:21:42,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:42,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 584 [2023-09-01 08:21:42,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:44,473 INFO L130 PetriNetUnfolder]: 18965/28546 cut-off events. [2023-09-01 08:21:44,473 INFO L131 PetriNetUnfolder]: For 28937/29287 co-relation queries the response was YES. [2023-09-01 08:21:44,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83493 conditions, 28546 events. 18965/28546 cut-off events. For 28937/29287 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 189946 event pairs, 4886 based on Foata normal form. 350/28788 useless extension candidates. Maximal degree in co-relation 83469. Up to 8676 conditions per place. [2023-09-01 08:21:44,597 INFO L137 encePairwiseOnDemand]: 571/584 looper letters, 0 selfloop transitions, 0 changer transitions 194/194 dead transitions. [2023-09-01 08:21:44,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 194 transitions, 1339 flow [2023-09-01 08:21:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 08:21:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 08:21:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3546 transitions. [2023-09-01 08:21:44,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43370841487279843 [2023-09-01 08:21:44,603 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3546 transitions. [2023-09-01 08:21:44,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3546 transitions. [2023-09-01 08:21:44,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:44,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3546 transitions. [2023-09-01 08:21:44,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 253.28571428571428) internal successors, (3546), 14 states have internal predecessors, (3546), 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 08:21:44,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 584.0) internal successors, (8760), 15 states have internal predecessors, (8760), 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 08:21:44,616 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 584.0) internal successors, (8760), 15 states have internal predecessors, (8760), 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 08:21:44,616 INFO L175 Difference]: Start difference. First operand has 88 places, 60 transitions, 334 flow. Second operand 14 states and 3546 transitions. [2023-09-01 08:21:44,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 194 transitions, 1339 flow [2023-09-01 08:21:45,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 194 transitions, 1087 flow, removed 40 selfloop flow, removed 15 redundant places. [2023-09-01 08:21:45,046 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-09-01 08:21:45,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-09-01 08:21:45,046 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-09-01 08:21:45,046 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-09-01 08:21:45,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.3) internal successors, (2473), 10 states have internal predecessors, (2473), 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 08:21:45,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-09-01 08:21:45,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-09-01 08:21:45,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2023-09-01 08:21:45,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2023-09-01 08:21:45,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2023-09-01 08:21:45,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-09-01 08:21:45,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-09-01 08:21:45,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-09-01 08:21:45,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-09-01 08:21:45,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-09-01 08:21:45,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-09-01 08:21:45,059 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 08:21:45,256 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 08:21:45,257 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:45,260 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:21:45,260 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:21:45,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:21:45 BasicIcfg [2023-09-01 08:21:45,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:21:45,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:21:45,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:21:45,264 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:21:45,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:54" (3/4) ... [2023-09-01 08:21:45,267 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:21:45,272 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:21:45,272 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:21:45,272 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 08:21:45,281 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-09-01 08:21:45,281 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:21:45,281 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:21:45,282 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:21:45,334 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:21:45,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:21:45,334 INFO L158 Benchmark]: Toolchain (without parser) took 52166.05ms. Allocated memory was 86.0MB in the beginning and 6.7GB in the end (delta: 6.6GB). Free memory was 64.3MB in the beginning and 5.5GB in the end (delta: -5.5GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-09-01 08:21:45,335 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 39.2MB in the end (delta: 56.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:21:45,335 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.72ms. Allocated memory is still 86.0MB. Free memory was 64.0MB in the beginning and 52.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:21:45,335 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.87ms. Allocated memory is still 86.0MB. Free memory was 52.5MB in the beginning and 50.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:21:45,335 INFO L158 Benchmark]: Boogie Preprocessor took 33.14ms. Allocated memory is still 86.0MB. Free memory was 50.3MB in the beginning and 48.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:21:45,336 INFO L158 Benchmark]: RCFGBuilder took 667.58ms. Allocated memory is still 86.0MB. Free memory was 48.2MB in the beginning and 45.2MB in the end (delta: 3.0MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2023-09-01 08:21:45,336 INFO L158 Benchmark]: TraceAbstraction took 51030.61ms. Allocated memory was 86.0MB in the beginning and 6.7GB in the end (delta: 6.6GB). Free memory was 44.8MB in the beginning and 5.5GB in the end (delta: -5.5GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2023-09-01 08:21:45,336 INFO L158 Benchmark]: Witness Printer took 69.87ms. Allocated memory is still 6.7GB. Free memory was 5.5GB in the beginning and 5.5GB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:21:45,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 39.2MB in the end (delta: 56.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.72ms. Allocated memory is still 86.0MB. Free memory was 64.0MB in the beginning and 52.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.87ms. Allocated memory is still 86.0MB. Free memory was 52.5MB in the beginning and 50.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.14ms. Allocated memory is still 86.0MB. Free memory was 50.3MB in the beginning and 48.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 667.58ms. Allocated memory is still 86.0MB. Free memory was 48.2MB in the beginning and 45.2MB in the end (delta: 3.0MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * TraceAbstraction took 51030.61ms. Allocated memory was 86.0MB in the beginning and 6.7GB in the end (delta: 6.6GB). Free memory was 44.8MB in the beginning and 5.5GB in the end (delta: -5.5GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 69.87ms. Allocated memory is still 6.7GB. Free memory was 5.5GB in the beginning and 5.5GB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2s, 250 PlacesBefore, 51 PlacesAfterwards, 263 TransitionsBefore, 48 TransitionsAfterwards, 3240 CoEnabledTransitionPairs, 7 FixpointIterations, 173 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 40 TrivialYvCompositions, 6 ConcurrentYvCompositions, 16 ChoiceCompositions, 285 TotalNumberOfCompositions, 7233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3510, independent: 3309, independent conditional: 0, independent unconditional: 3309, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1705, independent: 1644, independent conditional: 0, independent unconditional: 1644, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3510, independent: 1665, independent conditional: 0, independent unconditional: 1665, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 1705, unknown conditional: 0, unknown unconditional: 1705] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 114, Positive conditional cache size: 0, Positive unconditional cache size: 114, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: 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 7 procedures, 329 locations, 23 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: 50.8s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 37.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4674 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3778 mSDsluCounter, 1309 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1020 mSDsCounter, 400 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6721 IncrementalHoareTripleChecker+Invalid, 7121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 400 mSolverCounterUnsat, 289 mSDtfsCounter, 6721 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 197 SyntacticMatches, 5 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=602occurred in iteration=16, InterpolantAutomatonStates: 109, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 379 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 434 ConstructedInterpolants, 0 QuantifiedInterpolants, 1254 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2362 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 36 InterpolantComputations, 13 PerfectInterpolantSequences, 186/299 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:21:45,366 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