./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-sorted.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-sorted.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 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --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 08:20:29,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:20:29,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:20:29,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:20:29,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:20:29,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:20:29,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:20:29,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:20:29,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:20:29,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:20:29,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:20:29,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:20:29,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:20:29,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:20:29,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:20:29,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:20:29,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:20:29,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:20:29,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:20:29,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:20:29,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:20:29,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:20:29,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:20:29,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:20:29,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:20:29,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:20:29,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:20:29,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:20:29,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:20:29,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:20:29,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:20:29,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:20:29,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:20:29,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:20:29,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:20:29,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:20:29,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:20:29,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:20:29,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:20:29,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:20:29,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:20:29,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:20:29,491 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:20:29,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:20:29,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:20:29,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:20:29,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:20:29,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:20:29,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:20:29,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:20:29,495 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:20:29,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:20:29,496 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:20:29,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:20:29,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:20:29,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:20:29,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:20:29,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:20:29,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:20:29,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:20:29,497 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:20:29,497 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:20:29,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:20:29,498 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:20:29,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:20:29,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:20:29,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:20:29,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:20:29,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:20:29,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:20:29,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:20:29,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:20:29,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:20:29,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:20:29,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:20:29,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:20:29,501 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:20:29,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:20:29,501 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:20:29,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:20:29,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:20:29,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:20:29,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:20:29,849 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:20:29,849 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:20:29,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2023-09-01 08:20:30,991 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:20:31,225 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:20:31,225 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2023-09-01 08:20:31,230 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6922bdaf/53c7ca8747cd4b7c9d46d746d6cc9953/FLAGa89cf87f7 [2023-09-01 08:20:31,243 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6922bdaf/53c7ca8747cd4b7c9d46d746d6cc9953 [2023-09-01 08:20:31,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:20:31,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:20:31,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:20:31,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:20:31,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:20:31,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@107b050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31, skipping insertion in model container [2023-09-01 08:20:31,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:20:31,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:20:31,438 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-sorted.wvr.c[2434,2447] [2023-09-01 08:20:31,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:20:31,462 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:20:31,503 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-sorted.wvr.c[2434,2447] [2023-09-01 08:20:31,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:20:31,524 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:20:31,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31 WrapperNode [2023-09-01 08:20:31,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:20:31,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:20:31,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:20:31,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:20:31,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,581 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 110 [2023-09-01 08:20:31,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:20:31,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:20:31,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:20:31,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:20:31,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:20:31,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:20:31,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:20:31,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:20:31,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:20:31,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:31,693 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 08:20:31,721 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 08:20:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:20:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:20:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:20:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:20:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:20:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:20:31,731 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:20:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:20:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:20:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:20:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:20:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:20:31,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:20:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:20:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:20:31,733 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 08:20:31,852 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:20:31,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:20:32,229 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:20:32,243 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:20:32,245 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:20:32,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:32 BoogieIcfgContainer [2023-09-01 08:20:32,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:20:32,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:20:32,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:20:32,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:20:32,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:20:31" (1/3) ... [2023-09-01 08:20:32,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33066793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:20:32, skipping insertion in model container [2023-09-01 08:20:32,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (2/3) ... [2023-09-01 08:20:32,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33066793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:20:32, skipping insertion in model container [2023-09-01 08:20:32,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:32" (3/3) ... [2023-09-01 08:20:32,258 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-09-01 08:20:32,265 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:20:32,273 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:20:32,274 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-09-01 08:20:32,274 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:20:32,422 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:20:32,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 209 transitions, 442 flow [2023-09-01 08:20:32,594 INFO L130 PetriNetUnfolder]: 15/206 cut-off events. [2023-09-01 08:20:32,594 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:20:32,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 206 events. 15/206 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 368 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-09-01 08:20:32,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 209 transitions, 442 flow [2023-09-01 08:20:32,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 188 transitions, 391 flow [2023-09-01 08:20:32,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:20:32,638 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 188 transitions, 391 flow [2023-09-01 08:20:32,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 188 transitions, 391 flow [2023-09-01 08:20:32,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 188 transitions, 391 flow [2023-09-01 08:20:32,695 INFO L130 PetriNetUnfolder]: 14/188 cut-off events. [2023-09-01 08:20:32,695 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:20:32,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 188 events. 14/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 366 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-09-01 08:20:32,702 INFO L119 LiptonReduction]: Number of co-enabled transitions 7406 [2023-09-01 08:20:39,549 INFO L134 LiptonReduction]: Checked pairs total: 8678 [2023-09-01 08:20:39,550 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-09-01 08:20:39,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:20:39,567 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;@5de63f4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:20:39,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-09-01 08:20:39,571 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:20:39,571 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:20:39,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:39,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:20:39,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:20:39,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash 26104, now seen corresponding path program 1 times [2023-09-01 08:20:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:39,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475670854] [2023-09-01 08:20:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:39,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:39,898 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 08:20:39,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:39,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475670854] [2023-09-01 08:20:39,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475670854] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:39,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:39,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:20:39,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926724288] [2023-09-01 08:20:39,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:39,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:39,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:39,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:39,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:39,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 420 [2023-09-01 08:20:39,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 08:20:39,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:39,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 420 [2023-09-01 08:20:39,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:41,134 INFO L130 PetriNetUnfolder]: 9161/12051 cut-off events. [2023-09-01 08:20:41,134 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2023-09-01 08:20:41,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24129 conditions, 12051 events. 9161/12051 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 64008 event pairs, 4728 based on Foata normal form. 0/4513 useless extension candidates. Maximal degree in co-relation 11015. Up to 5797 conditions per place. [2023-09-01 08:20:41,239 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 71 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-09-01 08:20:41,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 332 flow [2023-09-01 08:20:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-09-01 08:20:41,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190476190476191 [2023-09-01 08:20:41,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-09-01 08:20:41,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-09-01 08:20:41,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:41,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-09-01 08:20:41,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 08:20:41,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:41,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:41,294 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 654 transitions. [2023-09-01 08:20:41,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 332 flow [2023-09-01 08:20:41,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:20:41,323 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 106 flow [2023-09-01 08:20:41,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-09-01 08:20:41,329 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-09-01 08:20:41,329 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 106 flow [2023-09-01 08:20:41,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 08:20:41,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:41,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:20:41,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:20:41,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:20:41,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash 810931, now seen corresponding path program 1 times [2023-09-01 08:20:41,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:41,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104795058] [2023-09-01 08:20:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:41,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:41,439 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 08:20:41,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:41,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104795058] [2023-09-01 08:20:41,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104795058] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:41,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410634055] [2023-09-01 08:20:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:41,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:41,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:41,453 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 08:20:41,464 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 08:20:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:41,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:41,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:41,604 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 08:20:41,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:41,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410634055] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:41,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:41,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:20:41,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023931253] [2023-09-01 08:20:41,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:41,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:20:41,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:41,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:20:41,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:20:41,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 420 [2023-09-01 08:20:41,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 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 08:20:41,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:41,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 420 [2023-09-01 08:20:41,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:42,587 INFO L130 PetriNetUnfolder]: 9161/12050 cut-off events. [2023-09-01 08:20:42,587 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 08:20:42,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23991 conditions, 12050 events. 9161/12050 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 63932 event pairs, 4728 based on Foata normal form. 0/4515 useless extension candidates. Maximal degree in co-relation 11993. Up to 5795 conditions per place. [2023-09-01 08:20:42,654 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 70 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-09-01 08:20:42,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 77 transitions, 320 flow [2023-09-01 08:20:42,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:20:42,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:20:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 837 transitions. [2023-09-01 08:20:42,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982142857142857 [2023-09-01 08:20:42,657 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 837 transitions. [2023-09-01 08:20:42,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 837 transitions. [2023-09-01 08:20:42,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:42,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 837 transitions. [2023-09-01 08:20:42,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 08:20:42,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 08:20:42,664 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 08:20:42,664 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 106 flow. Second operand 4 states and 837 transitions. [2023-09-01 08:20:42,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 77 transitions, 320 flow [2023-09-01 08:20:42,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:42,666 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 104 flow [2023-09-01 08:20:42,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-09-01 08:20:42,667 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-09-01 08:20:42,668 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 104 flow [2023-09-01 08:20:42,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 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 08:20:42,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:42,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:20:42,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:42,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:42,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:20:42,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:42,877 INFO L85 PathProgramCache]: Analyzing trace with hash 810941, now seen corresponding path program 1 times [2023-09-01 08:20:42,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:42,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201340392] [2023-09-01 08:20:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:42,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:42,972 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 08:20:42,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:42,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201340392] [2023-09-01 08:20:42,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201340392] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:42,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338504858] [2023-09-01 08:20:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:42,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:42,978 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 08:20:42,997 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 08:20:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:43,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:43,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:43,054 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 08:20:43,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:43,069 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 08:20:43,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338504858] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:43,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:43,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:20:43,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356937517] [2023-09-01 08:20:43,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:43,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:20:43,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:20:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:43,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 420 [2023-09-01 08:20:43,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 192.14285714285714) internal successors, (1345), 7 states have internal predecessors, (1345), 0 states have call successors, (0), 0 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 08:20:43,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:43,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 420 [2023-09-01 08:20:43,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:45,413 INFO L130 PetriNetUnfolder]: 22901/30122 cut-off events. [2023-09-01 08:20:45,415 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 08:20:45,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59962 conditions, 30122 events. 22901/30122 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 2106. Compared 175348 event pairs, 11820 based on Foata normal form. 0/11331 useless extension candidates. Maximal degree in co-relation 47963. Up to 5796 conditions per place. [2023-09-01 08:20:45,609 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 172 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2023-09-01 08:20:45,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 182 transitions, 766 flow [2023-09-01 08:20:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:20:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:20:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1326 transitions. [2023-09-01 08:20:45,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261904761904762 [2023-09-01 08:20:45,613 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1326 transitions. [2023-09-01 08:20:45,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1326 transitions. [2023-09-01 08:20:45,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:45,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1326 transitions. [2023-09-01 08:20:45,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 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 08:20:45,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 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 08:20:45,622 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 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 08:20:45,623 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 104 flow. Second operand 6 states and 1326 transitions. [2023-09-01 08:20:45,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 182 transitions, 766 flow [2023-09-01 08:20:45,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 182 transitions, 763 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:20:45,629 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 137 flow [2023-09-01 08:20:45,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=137, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-09-01 08:20:45,630 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-09-01 08:20:45,630 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 137 flow [2023-09-01 08:20:45,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 192.14285714285714) internal successors, (1345), 7 states have internal predecessors, (1345), 0 states have call successors, (0), 0 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 08:20:45,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:45,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:20:45,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:45,841 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,SelfDestructingSolverStorable2 [2023-09-01 08:20:45,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:20:45,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:45,842 INFO L85 PathProgramCache]: Analyzing trace with hash 779419965, now seen corresponding path program 1 times [2023-09-01 08:20:45,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:45,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598673126] [2023-09-01 08:20:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:45,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:46,010 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 08:20:46,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:46,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598673126] [2023-09-01 08:20:46,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598673126] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:46,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:46,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:46,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272571884] [2023-09-01 08:20:46,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:46,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:20:46,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:46,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:20:46,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:20:46,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 420 [2023-09-01 08:20:46,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 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 08:20:46,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:46,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 420 [2023-09-01 08:20:46,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:47,841 INFO L130 PetriNetUnfolder]: 22901/29272 cut-off events. [2023-09-01 08:20:47,841 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-09-01 08:20:47,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59126 conditions, 29272 events. 22901/29272 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 2142. Compared 159387 event pairs, 11820 based on Foata normal form. 0/10362 useless extension candidates. Maximal degree in co-relation 47293. Up to 28967 conditions per place. [2023-09-01 08:20:47,981 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 40 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-09-01 08:20:47,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 215 flow [2023-09-01 08:20:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-09-01 08:20:47,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738095238095238 [2023-09-01 08:20:47,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-09-01 08:20:47,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-09-01 08:20:47,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:47,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-09-01 08:20:47,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 08:20:47,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:47,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:47,989 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 137 flow. Second operand 3 states and 597 transitions. [2023-09-01 08:20:47,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 215 flow [2023-09-01 08:20:47,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 207 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:47,991 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 127 flow [2023-09-01 08:20:47,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-09-01 08:20:47,993 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-09-01 08:20:47,993 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 127 flow [2023-09-01 08:20:47,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 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 08:20:47,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:47,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:20:47,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:20:47,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:20:47,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:47,995 INFO L85 PathProgramCache]: Analyzing trace with hash 779420244, now seen corresponding path program 1 times [2023-09-01 08:20:47,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:47,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743873466] [2023-09-01 08:20:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:47,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:48,031 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 08:20:48,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:48,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743873466] [2023-09-01 08:20:48,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743873466] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:48,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:48,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:48,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483704140] [2023-09-01 08:20:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:48,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:48,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:48,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:48,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 420 [2023-09-01 08:20:48,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 08:20:48,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:48,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 420 [2023-09-01 08:20:48,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:50,456 INFO L130 PetriNetUnfolder]: 34721/44892 cut-off events. [2023-09-01 08:20:50,457 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2023-09-01 08:20:50,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90924 conditions, 44892 events. 34721/44892 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 2948. Compared 258680 event pairs, 10520 based on Foata normal form. 0/17577 useless extension candidates. Maximal degree in co-relation 90912. Up to 27178 conditions per place. [2023-09-01 08:20:50,750 INFO L137 encePairwiseOnDemand]: 415/420 looper letters, 69 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-09-01 08:20:50,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 73 transitions, 332 flow [2023-09-01 08:20:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-09-01 08:20:50,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-09-01 08:20:50,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-09-01 08:20:50,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-09-01 08:20:50,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:50,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-09-01 08:20:50,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 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 08:20:50,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:50,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:50,759 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 127 flow. Second operand 3 states and 640 transitions. [2023-09-01 08:20:50,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 73 transitions, 332 flow [2023-09-01 08:20:50,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 73 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:50,762 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 142 flow [2023-09-01 08:20:50,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-09-01 08:20:50,764 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-09-01 08:20:50,764 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 142 flow [2023-09-01 08:20:50,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 08:20:50,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:50,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:20:50,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:20:50,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:20:50,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:50,766 INFO L85 PathProgramCache]: Analyzing trace with hash 779420139, now seen corresponding path program 1 times [2023-09-01 08:20:50,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:50,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224694659] [2023-09-01 08:20:50,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:50,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:50,799 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 08:20:50,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:50,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224694659] [2023-09-01 08:20:50,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224694659] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:50,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:50,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:20:50,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947692392] [2023-09-01 08:20:50,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:50,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:50,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:50,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 420 [2023-09-01 08:20:50,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 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 08:20:50,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:50,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 420 [2023-09-01 08:20:50,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:52,813 INFO L130 PetriNetUnfolder]: 22841/29907 cut-off events. [2023-09-01 08:20:52,813 INFO L131 PetriNetUnfolder]: For 1568/2078 co-relation queries the response was YES. [2023-09-01 08:20:52,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63710 conditions, 29907 events. 22841/29907 cut-off events. For 1568/2078 co-relation queries the response was YES. Maximal size of possible extension queue 1983. Compared 172422 event pairs, 12900 based on Foata normal form. 510/13527 useless extension candidates. Maximal degree in co-relation 63697. Up to 29612 conditions per place. [2023-09-01 08:20:52,951 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 39 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-09-01 08:20:52,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 218 flow [2023-09-01 08:20:52,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-09-01 08:20:52,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476984126984127 [2023-09-01 08:20:52,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-09-01 08:20:52,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-09-01 08:20:52,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:52,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-09-01 08:20:52,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 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 08:20:52,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:52,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:52,961 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 142 flow. Second operand 3 states and 601 transitions. [2023-09-01 08:20:52,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 218 flow [2023-09-01 08:20:52,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:52,963 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 138 flow [2023-09-01 08:20:52,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-09-01 08:20:52,963 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-09-01 08:20:52,964 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 138 flow [2023-09-01 08:20:52,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 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 08:20:52,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:52,964 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:20:52,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:20:52,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:20:52,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:52,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1609663294, now seen corresponding path program 2 times [2023-09-01 08:20:52,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:52,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723326985] [2023-09-01 08:20:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:52,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:53,042 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 08:20:53,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:53,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723326985] [2023-09-01 08:20:53,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723326985] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:53,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173619489] [2023-09-01 08:20:53,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:20:53,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:53,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:53,045 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 08:20:53,047 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 08:20:53,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:20:53,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:20:53,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:20:53,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:53,133 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 08:20:53,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:53,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173619489] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:53,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:53,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:20:53,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52277343] [2023-09-01 08:20:53,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:53,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:53,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:53,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:53,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:20:53,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 420 [2023-09-01 08:20:53,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 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 08:20:53,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:53,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 420 [2023-09-01 08:20:53,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:54,879 INFO L130 PetriNetUnfolder]: 22841/29906 cut-off events. [2023-09-01 08:20:54,879 INFO L131 PetriNetUnfolder]: For 1563/2073 co-relation queries the response was YES. [2023-09-01 08:20:54,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63190 conditions, 29906 events. 22841/29906 cut-off events. For 1563/2073 co-relation queries the response was YES. Maximal size of possible extension queue 1983. Compared 172275 event pairs, 12900 based on Foata normal form. 511/13527 useless extension candidates. Maximal degree in co-relation 63176. Up to 29611 conditions per place. [2023-09-01 08:20:55,062 INFO L137 encePairwiseOnDemand]: 418/420 looper letters, 38 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-09-01 08:20:55,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 206 flow [2023-09-01 08:20:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:55,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-09-01 08:20:55,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849206349206349 [2023-09-01 08:20:55,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-09-01 08:20:55,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-09-01 08:20:55,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:55,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-09-01 08:20:55,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 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 08:20:55,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:55,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:55,068 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 138 flow. Second operand 3 states and 611 transitions. [2023-09-01 08:20:55,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 206 flow [2023-09-01 08:20:55,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 195 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 08:20:55,070 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 119 flow [2023-09-01 08:20:55,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-09-01 08:20:55,070 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-09-01 08:20:55,071 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 119 flow [2023-09-01 08:20:55,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 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 08:20:55,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:55,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:55,081 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 08:20:55,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:55,281 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:20:55,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1698560992, now seen corresponding path program 1 times [2023-09-01 08:20:55,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:55,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073047945] [2023-09-01 08:20:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:55,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:55,437 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 08:20:55,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:55,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073047945] [2023-09-01 08:20:55,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073047945] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:55,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759969850] [2023-09-01 08:20:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:55,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:55,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:55,441 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 08:20:55,465 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 08:20:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:55,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:20:55,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:55,553 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 08:20:55,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:55,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759969850] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:55,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:55,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-09-01 08:20:55,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392767165] [2023-09-01 08:20:55,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:20:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:55,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:20:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:55,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 420 [2023-09-01 08:20:55,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 180.4) internal successors, (902), 5 states have internal predecessors, (902), 0 states have call successors, (0), 0 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 08:20:55,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:55,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 420 [2023-09-01 08:20:55,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:57,045 INFO L130 PetriNetUnfolder]: 19601/25690 cut-off events. [2023-09-01 08:20:57,045 INFO L131 PetriNetUnfolder]: For 1652/1652 co-relation queries the response was YES. [2023-09-01 08:20:57,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54539 conditions, 25690 events. 19601/25690 cut-off events. For 1652/1652 co-relation queries the response was YES. Maximal size of possible extension queue 1678. Compared 144999 event pairs, 11164 based on Foata normal form. 1/11367 useless extension candidates. Maximal degree in co-relation 54528. Up to 25430 conditions per place. [2023-09-01 08:20:57,150 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-09-01 08:20:57,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 199 flow [2023-09-01 08:20:57,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:57,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:57,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-09-01 08:20:57,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2023-09-01 08:20:57,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-09-01 08:20:57,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-09-01 08:20:57,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:57,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-09-01 08:20:57,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 08:20:57,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:57,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:20:57,157 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 119 flow. Second operand 3 states and 574 transitions. [2023-09-01 08:20:57,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 199 flow [2023-09-01 08:20:57,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 196 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:57,159 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 124 flow [2023-09-01 08:20:57,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-09-01 08:20:57,160 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-09-01 08:20:57,160 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 124 flow [2023-09-01 08:20:57,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.4) internal successors, (902), 5 states have internal predecessors, (902), 0 states have call successors, (0), 0 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 08:20:57,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:57,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:57,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:57,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:57,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:20:57,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash -639639803, now seen corresponding path program 1 times [2023-09-01 08:20:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:57,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138060967] [2023-09-01 08:20:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:57,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:57,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:57,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138060967] [2023-09-01 08:20:57,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138060967] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:57,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774732183] [2023-09-01 08:20:57,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:57,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:57,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:57,424 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 08:20:57,437 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 08:20:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:57,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:20:57,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:57,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:57,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774732183] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:57,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:57,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-09-01 08:20:57,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610193284] [2023-09-01 08:20:57,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:57,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 08:20:57,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:57,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 08:20:57,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-09-01 08:20:57,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 420 [2023-09-01 08:20:57,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 124 flow. Second operand has 11 states, 11 states have (on average 177.9090909090909) internal successors, (1957), 11 states have internal predecessors, (1957), 0 states have call successors, (0), 0 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 08:20:57,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:57,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 420 [2023-09-01 08:20:57,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:59,248 INFO L130 PetriNetUnfolder]: 14916/19255 cut-off events. [2023-09-01 08:20:59,249 INFO L131 PetriNetUnfolder]: For 764/764 co-relation queries the response was YES. [2023-09-01 08:20:59,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40537 conditions, 19255 events. 14916/19255 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 99969 event pairs, 2028 based on Foata normal form. 330/8980 useless extension candidates. Maximal degree in co-relation 40524. Up to 6504 conditions per place. [2023-09-01 08:20:59,357 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 153 selfloop transitions, 9 changer transitions 0/164 dead transitions. [2023-09-01 08:20:59,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 164 transitions, 715 flow [2023-09-01 08:20:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:20:59,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:20:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1924 transitions. [2023-09-01 08:20:59,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580952380952381 [2023-09-01 08:20:59,362 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1924 transitions. [2023-09-01 08:20:59,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1924 transitions. [2023-09-01 08:20:59,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:59,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1924 transitions. [2023-09-01 08:20:59,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 192.4) internal successors, (1924), 10 states have internal predecessors, (1924), 0 states have call successors, (0), 0 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 08:20:59,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 420.0) internal successors, (4620), 11 states have internal predecessors, (4620), 0 states have call successors, (0), 0 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 08:20:59,374 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 420.0) internal successors, (4620), 11 states have internal predecessors, (4620), 0 states have call successors, (0), 0 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 08:20:59,374 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 124 flow. Second operand 10 states and 1924 transitions. [2023-09-01 08:20:59,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 164 transitions, 715 flow [2023-09-01 08:20:59,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 164 transitions, 711 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:20:59,379 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 154 flow [2023-09-01 08:20:59,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=154, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-09-01 08:20:59,380 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-09-01 08:20:59,380 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 154 flow [2023-09-01 08:20:59,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 177.9090909090909) internal successors, (1957), 11 states have internal predecessors, (1957), 0 states have call successors, (0), 0 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 08:20:59,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:59,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:59,389 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 08:20:59,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:59,587 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:20:59,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash -632103114, now seen corresponding path program 1 times [2023-09-01 08:20:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:59,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933938274] [2023-09-01 08:20:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:59,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:59,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:59,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933938274] [2023-09-01 08:20:59,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933938274] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:59,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:59,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:59,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194975837] [2023-09-01 08:20:59,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:59,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:59,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:59,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:59,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:59,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 420 [2023-09-01 08:20:59,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 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 08:20:59,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:59,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 420 [2023-09-01 08:20:59,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:00,911 INFO L130 PetriNetUnfolder]: 17084/22729 cut-off events. [2023-09-01 08:21:00,911 INFO L131 PetriNetUnfolder]: For 4240/4395 co-relation queries the response was YES. [2023-09-01 08:21:00,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51070 conditions, 22729 events. 17084/22729 cut-off events. For 4240/4395 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 132473 event pairs, 7276 based on Foata normal form. 155/12570 useless extension candidates. Maximal degree in co-relation 51055. Up to 15403 conditions per place. [2023-09-01 08:21:01,017 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 64 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-09-01 08:21:01,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 358 flow [2023-09-01 08:21:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 629 transitions. [2023-09-01 08:21:01,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992063492063492 [2023-09-01 08:21:01,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 629 transitions. [2023-09-01 08:21:01,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 629 transitions. [2023-09-01 08:21:01,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:01,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 629 transitions. [2023-09-01 08:21:01,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 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 08:21:01,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:21:01,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:21:01,024 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 154 flow. Second operand 3 states and 629 transitions. [2023-09-01 08:21:01,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 358 flow [2023-09-01 08:21:01,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-09-01 08:21:01,028 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 161 flow [2023-09-01 08:21:01,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-09-01 08:21:01,028 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-09-01 08:21:01,029 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 161 flow [2023-09-01 08:21:01,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 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 08:21:01,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:01,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:01,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:21:01,030 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:21:01,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 902934857, now seen corresponding path program 1 times [2023-09-01 08:21:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598423483] [2023-09-01 08:21:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:21:01,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:01,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598423483] [2023-09-01 08:21:01,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598423483] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667861665] [2023-09-01 08:21:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:01,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:01,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:01,077 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 08:21:01,102 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 08:21:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:01,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 08:21:01,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:01,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:01,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667861665] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:01,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:01,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2023-09-01 08:21:01,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263852861] [2023-09-01 08:21:01,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:01,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 08:21:01,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:01,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 08:21:01,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-09-01 08:21:01,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 420 [2023-09-01 08:21:01,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 161 flow. Second operand has 15 states, 15 states have (on average 177.8) internal successors, (2667), 15 states have internal predecessors, (2667), 0 states have call successors, (0), 0 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 08:21:01,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:01,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 420 [2023-09-01 08:21:01,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:03,707 INFO L130 PetriNetUnfolder]: 20793/27616 cut-off events. [2023-09-01 08:21:03,708 INFO L131 PetriNetUnfolder]: For 4704/5234 co-relation queries the response was YES. [2023-09-01 08:21:03,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65655 conditions, 27616 events. 20793/27616 cut-off events. For 4704/5234 co-relation queries the response was YES. Maximal size of possible extension queue 1387. Compared 163189 event pairs, 3431 based on Foata normal form. 676/16263 useless extension candidates. Maximal degree in co-relation 65639. Up to 6104 conditions per place. [2023-09-01 08:21:03,839 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 292 selfloop transitions, 17 changer transitions 0/311 dead transitions. [2023-09-01 08:21:03,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 311 transitions, 1545 flow [2023-09-01 08:21:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 08:21:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 08:21:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3290 transitions. [2023-09-01 08:21:03,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2023-09-01 08:21:03,846 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3290 transitions. [2023-09-01 08:21:03,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3290 transitions. [2023-09-01 08:21:03,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:03,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3290 transitions. [2023-09-01 08:21:03,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 193.52941176470588) internal successors, (3290), 17 states have internal predecessors, (3290), 0 states have call successors, (0), 0 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 08:21:03,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 420.0) internal successors, (7560), 18 states have internal predecessors, (7560), 0 states have call successors, (0), 0 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 08:21:03,865 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 420.0) internal successors, (7560), 18 states have internal predecessors, (7560), 0 states have call successors, (0), 0 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 08:21:03,865 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 161 flow. Second operand 17 states and 3290 transitions. [2023-09-01 08:21:03,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 311 transitions, 1545 flow [2023-09-01 08:21:03,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 311 transitions, 1531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:03,874 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 244 flow [2023-09-01 08:21:03,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=244, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2023-09-01 08:21:03,875 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-09-01 08:21:03,875 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 244 flow [2023-09-01 08:21:03,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 177.8) internal successors, (2667), 15 states have internal predecessors, (2667), 0 states have call successors, (0), 0 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 08:21:03,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:03,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:03,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 08:21:04,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:04,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:21:04,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1860680428, now seen corresponding path program 1 times [2023-09-01 08:21:04,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:04,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367484789] [2023-09-01 08:21:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:04,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:04,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367484789] [2023-09-01 08:21:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367484789] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482530362] [2023-09-01 08:21:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:04,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:04,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:04,125 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 08:21:04,135 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 08:21:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:04,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 08:21:04,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:04,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:21:04,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482530362] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:04,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:21:04,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:21:04,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321107744] [2023-09-01 08:21:04,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:04,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:21:04,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:04,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:21:04,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:21:04,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 420 [2023-09-01 08:21:04,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 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 08:21:04,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:04,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 420 [2023-09-01 08:21:04,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:05,801 INFO L130 PetriNetUnfolder]: 17605/23344 cut-off events. [2023-09-01 08:21:05,801 INFO L131 PetriNetUnfolder]: For 11450/11582 co-relation queries the response was YES. [2023-09-01 08:21:05,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59467 conditions, 23344 events. 17605/23344 cut-off events. For 11450/11582 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 132317 event pairs, 1675 based on Foata normal form. 132/13926 useless extension candidates. Maximal degree in co-relation 59447. Up to 13122 conditions per place. [2023-09-01 08:21:05,974 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 96 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-09-01 08:21:05,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 102 transitions, 659 flow [2023-09-01 08:21:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:21:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:21:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 830 transitions. [2023-09-01 08:21:05,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2023-09-01 08:21:05,979 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 830 transitions. [2023-09-01 08:21:05,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 830 transitions. [2023-09-01 08:21:05,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:05,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 830 transitions. [2023-09-01 08:21:05,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.5) internal successors, (830), 4 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:05,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 08:21:05,984 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 08:21:05,984 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 244 flow. Second operand 4 states and 830 transitions. [2023-09-01 08:21:05,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 102 transitions, 659 flow [2023-09-01 08:21:05,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 617 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-09-01 08:21:05,995 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 214 flow [2023-09-01 08:21:05,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-09-01 08:21:05,996 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-09-01 08:21:05,996 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 214 flow [2023-09-01 08:21:05,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 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 08:21:05,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:05,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:06,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:21:06,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:06,198 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:21:06,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1860680408, now seen corresponding path program 1 times [2023-09-01 08:21:06,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:06,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008613371] [2023-09-01 08:21:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:06,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:06,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:06,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008613371] [2023-09-01 08:21:06,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008613371] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:06,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315449387] [2023-09-01 08:21:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:06,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:06,254 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 08:21:06,258 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 08:21:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:06,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 08:21:06,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:06,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:06,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315449387] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:06,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:06,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:21:06,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245390457] [2023-09-01 08:21:06,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:06,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:21:06,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:06,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:21:06,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:21:06,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 420 [2023-09-01 08:21:06,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 08:21:06,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:06,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 420 [2023-09-01 08:21:06,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:09,608 INFO L130 PetriNetUnfolder]: 37196/49181 cut-off events. [2023-09-01 08:21:09,609 INFO L131 PetriNetUnfolder]: For 19527/19802 co-relation queries the response was YES. [2023-09-01 08:21:09,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123749 conditions, 49181 events. 37196/49181 cut-off events. For 19527/19802 co-relation queries the response was YES. Maximal size of possible extension queue 1770. Compared 295290 event pairs, 5697 based on Foata normal form. 1769/30676 useless extension candidates. Maximal degree in co-relation 123729. Up to 14025 conditions per place. [2023-09-01 08:21:09,893 INFO L137 encePairwiseOnDemand]: 415/420 looper letters, 159 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2023-09-01 08:21:09,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 169 transitions, 1004 flow [2023-09-01 08:21:09,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:21:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:21:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1259 transitions. [2023-09-01 08:21:09,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4996031746031746 [2023-09-01 08:21:09,896 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1259 transitions. [2023-09-01 08:21:09,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1259 transitions. [2023-09-01 08:21:09,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:09,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1259 transitions. [2023-09-01 08:21:09,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.83333333333334) internal successors, (1259), 6 states have internal predecessors, (1259), 0 states have call successors, (0), 0 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 08:21:09,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 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 08:21:09,903 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 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 08:21:09,903 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 214 flow. Second operand 6 states and 1259 transitions. [2023-09-01 08:21:09,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 169 transitions, 1004 flow [2023-09-01 08:21:09,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 169 transitions, 1001 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:09,917 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 263 flow [2023-09-01 08:21:09,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2023-09-01 08:21:09,918 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-09-01 08:21:09,919 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 263 flow [2023-09-01 08:21:09,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 08:21:09,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:09,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:09,933 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 08:21:10,133 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,SelfDestructingSolverStorable12 [2023-09-01 08:21:10,134 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:21:10,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:10,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1853928655, now seen corresponding path program 1 times [2023-09-01 08:21:10,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:10,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178382017] [2023-09-01 08:21:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:10,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:10,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:10,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178382017] [2023-09-01 08:21:10,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178382017] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:10,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:10,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:21:10,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113136802] [2023-09-01 08:21:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:10,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:21:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:21:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:21:10,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 420 [2023-09-01 08:21:10,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 0 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 08:21:10,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:10,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 420 [2023-09-01 08:21:10,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:12,120 INFO L130 PetriNetUnfolder]: 19451/26988 cut-off events. [2023-09-01 08:21:12,120 INFO L131 PetriNetUnfolder]: For 25713/26202 co-relation queries the response was YES. [2023-09-01 08:21:12,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76809 conditions, 26988 events. 19451/26988 cut-off events. For 25713/26202 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 162724 event pairs, 5190 based on Foata normal form. 489/20627 useless extension candidates. Maximal degree in co-relation 76786. Up to 16490 conditions per place. [2023-09-01 08:21:12,296 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 73 selfloop transitions, 2 changer transitions 4/83 dead transitions. [2023-09-01 08:21:12,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 581 flow [2023-09-01 08:21:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:21:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:21:12,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 801 transitions. [2023-09-01 08:21:12,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767857142857143 [2023-09-01 08:21:12,298 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 801 transitions. [2023-09-01 08:21:12,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 801 transitions. [2023-09-01 08:21:12,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:12,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 801 transitions. [2023-09-01 08:21:12,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.25) internal successors, (801), 4 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 08:21:12,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 08:21:12,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 08:21:12,303 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 263 flow. Second operand 4 states and 801 transitions. [2023-09-01 08:21:12,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 581 flow [2023-09-01 08:21:12,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:12,331 INFO L231 Difference]: Finished difference. Result has 77 places, 50 transitions, 250 flow [2023-09-01 08:21:12,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=77, PETRI_TRANSITIONS=50} [2023-09-01 08:21:12,332 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-09-01 08:21:12,332 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 50 transitions, 250 flow [2023-09-01 08:21:12,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 0 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 08:21:12,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:12,333 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2023-09-01 08:21:12,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 08:21:12,333 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:21:12,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash -345853896, now seen corresponding path program 2 times [2023-09-01 08:21:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:12,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236678860] [2023-09-01 08:21:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:12,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:12,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:12,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236678860] [2023-09-01 08:21:12,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236678860] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:12,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844581934] [2023-09-01 08:21:12,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:21:12,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:12,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:12,505 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 08:21:12,524 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 08:21:12,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:21:12,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:21:12,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:12,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:21:12,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:21:12,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844581934] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:12,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:12,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 2, 2] total 13 [2023-09-01 08:21:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683649595] [2023-09-01 08:21:12,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:12,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:21:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:21:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-09-01 08:21:12,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 420 [2023-09-01 08:21:12,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 50 transitions, 250 flow. Second operand has 14 states, 14 states have (on average 175.21428571428572) internal successors, (2453), 14 states have internal predecessors, (2453), 0 states have call successors, (0), 0 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 08:21:12,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:12,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 420 [2023-09-01 08:21:12,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:15,514 INFO L130 PetriNetUnfolder]: 20649/27902 cut-off events. [2023-09-01 08:21:15,515 INFO L131 PetriNetUnfolder]: For 21780/22095 co-relation queries the response was YES. [2023-09-01 08:21:15,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76537 conditions, 27902 events. 20649/27902 cut-off events. For 21780/22095 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 163337 event pairs, 1948 based on Foata normal form. 493/20306 useless extension candidates. Maximal degree in co-relation 76512. Up to 5304 conditions per place. [2023-09-01 08:21:15,687 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 377 selfloop transitions, 28 changer transitions 19/426 dead transitions. [2023-09-01 08:21:15,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 426 transitions, 2746 flow [2023-09-01 08:21:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-09-01 08:21:15,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-09-01 08:21:15,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4654 transitions. [2023-09-01 08:21:15,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44323809523809526 [2023-09-01 08:21:15,694 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4654 transitions. [2023-09-01 08:21:15,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4654 transitions. [2023-09-01 08:21:15,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:15,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4654 transitions. [2023-09-01 08:21:15,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 186.16) internal successors, (4654), 25 states have internal predecessors, (4654), 0 states have call successors, (0), 0 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 08:21:15,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 420.0) internal successors, (10920), 26 states have internal predecessors, (10920), 0 states have call successors, (0), 0 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 08:21:15,714 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 420.0) internal successors, (10920), 26 states have internal predecessors, (10920), 0 states have call successors, (0), 0 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 08:21:15,714 INFO L175 Difference]: Start difference. First operand has 77 places, 50 transitions, 250 flow. Second operand 25 states and 4654 transitions. [2023-09-01 08:21:15,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 426 transitions, 2746 flow [2023-09-01 08:21:15,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 426 transitions, 2743 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:15,750 INFO L231 Difference]: Finished difference. Result has 99 places, 57 transitions, 374 flow [2023-09-01 08:21:15,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=374, PETRI_PLACES=99, PETRI_TRANSITIONS=57} [2023-09-01 08:21:15,751 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 49 predicate places. [2023-09-01 08:21:15,751 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 57 transitions, 374 flow [2023-09-01 08:21:15,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 175.21428571428572) internal successors, (2453), 14 states have internal predecessors, (2453), 0 states have call successors, (0), 0 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 08:21:15,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:15,752 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:15,763 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 08:21:15,960 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,SelfDestructingSolverStorable14 [2023-09-01 08:21:15,960 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:21:15,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1746142782, now seen corresponding path program 2 times [2023-09-01 08:21:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764231230] [2023-09-01 08:21:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-09-01 08:21:16,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764231230] [2023-09-01 08:21:16,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764231230] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:16,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:16,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:21:16,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38587478] [2023-09-01 08:21:16,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:16,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:16,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:16,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:16,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:21:16,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 420 [2023-09-01 08:21:16,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 57 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 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 08:21:16,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:16,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 420 [2023-09-01 08:21:16,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:17,445 INFO L130 PetriNetUnfolder]: 13833/18624 cut-off events. [2023-09-01 08:21:17,445 INFO L131 PetriNetUnfolder]: For 23223/23615 co-relation queries the response was YES. [2023-09-01 08:21:17,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57161 conditions, 18624 events. 13833/18624 cut-off events. For 23223/23615 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 104013 event pairs, 8727 based on Foata normal form. 686/14606 useless extension candidates. Maximal degree in co-relation 57133. Up to 18564 conditions per place. [2023-09-01 08:21:17,569 INFO L137 encePairwiseOnDemand]: 418/420 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-09-01 08:21:17,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 56 transitions, 464 flow [2023-09-01 08:21:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2023-09-01 08:21:17,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-09-01 08:21:17,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2023-09-01 08:21:17,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2023-09-01 08:21:17,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:17,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2023-09-01 08:21:17,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 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 08:21:17,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:21:17,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 08:21:17,575 INFO L175 Difference]: Start difference. First operand has 99 places, 57 transitions, 374 flow. Second operand 3 states and 600 transitions. [2023-09-01 08:21:17,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 56 transitions, 464 flow [2023-09-01 08:21:17,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 56 transitions, 420 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-09-01 08:21:17,619 INFO L231 Difference]: Finished difference. Result has 88 places, 56 transitions, 322 flow [2023-09-01 08:21:17,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=88, PETRI_TRANSITIONS=56} [2023-09-01 08:21:17,621 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-09-01 08:21:17,621 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 56 transitions, 322 flow [2023-09-01 08:21:17,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 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 08:21:17,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:17,621 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:17,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 08:21:17,622 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:21:17,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:17,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1704148665, now seen corresponding path program 1 times [2023-09-01 08:21:17,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:17,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748006176] [2023-09-01 08:21:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:17,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:17,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:17,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748006176] [2023-09-01 08:21:17,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748006176] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:17,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431470638] [2023-09-01 08:21:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:17,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:17,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:17,729 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 08:21:17,739 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 08:21:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:17,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:21:17,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:17,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:17,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431470638] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:17,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:17,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:21:17,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480374744] [2023-09-01 08:21:17,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:17,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:21:17,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:17,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:21:17,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:21:17,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 420 [2023-09-01 08:21:17,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 56 transitions, 322 flow. Second operand has 13 states, 13 states have (on average 191.3846153846154) internal successors, (2488), 13 states have internal predecessors, (2488), 0 states have call successors, (0), 0 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 08:21:17,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:17,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 420 [2023-09-01 08:21:17,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:21,943 INFO L130 PetriNetUnfolder]: 35146/47273 cut-off events. [2023-09-01 08:21:21,943 INFO L131 PetriNetUnfolder]: For 59697/60024 co-relation queries the response was YES. [2023-09-01 08:21:22,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143675 conditions, 47273 events. 35146/47273 cut-off events. For 59697/60024 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 274556 event pairs, 2529 based on Foata normal form. 2091/37795 useless extension candidates. Maximal degree in co-relation 143648. Up to 6453 conditions per place. [2023-09-01 08:21:22,279 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 344 selfloop transitions, 18 changer transitions 0/367 dead transitions. [2023-09-01 08:21:22,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 367 transitions, 2876 flow [2023-09-01 08:21:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:21:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:21:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2458 transitions. [2023-09-01 08:21:22,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876984126984127 [2023-09-01 08:21:22,283 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2458 transitions. [2023-09-01 08:21:22,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2458 transitions. [2023-09-01 08:21:22,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:22,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2458 transitions. [2023-09-01 08:21:22,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 204.83333333333334) internal successors, (2458), 12 states have internal predecessors, (2458), 0 states have call successors, (0), 0 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 08:21:22,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 420.0) internal successors, (5460), 13 states have internal predecessors, (5460), 0 states have call successors, (0), 0 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 08:21:22,290 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 420.0) internal successors, (5460), 13 states have internal predecessors, (5460), 0 states have call successors, (0), 0 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 08:21:22,290 INFO L175 Difference]: Start difference. First operand has 88 places, 56 transitions, 322 flow. Second operand 12 states and 2458 transitions. [2023-09-01 08:21:22,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 367 transitions, 2876 flow [2023-09-01 08:21:22,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 367 transitions, 2875 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:22,384 INFO L231 Difference]: Finished difference. Result has 105 places, 69 transitions, 479 flow [2023-09-01 08:21:22,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=479, PETRI_PLACES=105, PETRI_TRANSITIONS=69} [2023-09-01 08:21:22,385 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2023-09-01 08:21:22,385 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 69 transitions, 479 flow [2023-09-01 08:21:22,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.3846153846154) internal successors, (2488), 13 states have internal predecessors, (2488), 0 states have call successors, (0), 0 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 08:21:22,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:22,387 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:22,395 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 08:21:22,592 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,SelfDestructingSolverStorable16 [2023-09-01 08:21:22,593 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-09-01 08:21:22,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:22,593 INFO L85 PathProgramCache]: Analyzing trace with hash 631119493, now seen corresponding path program 2 times [2023-09-01 08:21:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:22,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538364074] [2023-09-01 08:21:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538364074] [2023-09-01 08:21:22,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538364074] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835711097] [2023-09-01 08:21:22,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:21:22,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:22,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:22,774 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 08:21:22,776 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 08:21:22,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:21:22,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:21:22,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:22,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-09-01 08:21:22,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-09-01 08:21:22,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835711097] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:22,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:22,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 2, 2] total 14 [2023-09-01 08:21:22,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786438125] [2023-09-01 08:21:22,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:22,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 08:21:22,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:22,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 08:21:22,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2023-09-01 08:21:23,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 420 [2023-09-01 08:21:23,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 69 transitions, 479 flow. Second operand has 15 states, 15 states have (on average 187.66666666666666) internal successors, (2815), 15 states have internal predecessors, (2815), 0 states have call successors, (0), 0 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 08:21:23,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:23,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 420 [2023-09-01 08:21:23,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:28,000 INFO L130 PetriNetUnfolder]: 39634/53231 cut-off events. [2023-09-01 08:21:28,000 INFO L131 PetriNetUnfolder]: For 101933/102300 co-relation queries the response was YES. [2023-09-01 08:21:28,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174127 conditions, 53231 events. 39634/53231 cut-off events. For 101933/102300 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 307486 event pairs, 996 based on Foata normal form. 955/41009 useless extension candidates. Maximal degree in co-relation 174094. Up to 7335 conditions per place. [2023-09-01 08:21:28,401 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 0 selfloop transitions, 0 changer transitions 428/428 dead transitions. [2023-09-01 08:21:28,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 428 transitions, 3445 flow [2023-09-01 08:21:28,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 08:21:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 08:21:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2990 transitions. [2023-09-01 08:21:28,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746031746031746 [2023-09-01 08:21:28,404 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2990 transitions. [2023-09-01 08:21:28,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2990 transitions. [2023-09-01 08:21:28,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:28,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2990 transitions. [2023-09-01 08:21:28,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 199.33333333333334) internal successors, (2990), 15 states have internal predecessors, (2990), 0 states have call successors, (0), 0 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 08:21:28,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 420.0) internal successors, (6720), 16 states have internal predecessors, (6720), 0 states have call successors, (0), 0 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 08:21:28,414 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 420.0) internal successors, (6720), 16 states have internal predecessors, (6720), 0 states have call successors, (0), 0 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 08:21:28,415 INFO L175 Difference]: Start difference. First operand has 105 places, 69 transitions, 479 flow. Second operand 15 states and 2990 transitions. [2023-09-01 08:21:28,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 428 transitions, 3445 flow [2023-09-01 08:21:28,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 428 transitions, 3368 flow, removed 10 selfloop flow, removed 13 redundant places. [2023-09-01 08:21:28,969 INFO L231 Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow [2023-09-01 08:21:28,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=105, PETRI_TRANSITIONS=0} [2023-09-01 08:21:28,970 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2023-09-01 08:21:28,970 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow [2023-09-01 08:21:28,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 187.66666666666666) internal successors, (2815), 15 states have internal predecessors, (2815), 0 states have call successors, (0), 0 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 08:21:28,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 37 remaining) [2023-09-01 08:21:28,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 37 remaining) [2023-09-01 08:21:28,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 37 remaining) [2023-09-01 08:21:28,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 37 remaining) [2023-09-01 08:21:28,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 37 remaining) [2023-09-01 08:21:28,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 37 remaining) [2023-09-01 08:21:28,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 37 remaining) [2023-09-01 08:21:28,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 37 remaining) [2023-09-01 08:21:28,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 37 remaining) [2023-09-01 08:21:28,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 37 remaining) [2023-09-01 08:21:28,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 37 remaining) [2023-09-01 08:21:28,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 37 remaining) [2023-09-01 08:21:28,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 37 remaining) [2023-09-01 08:21:28,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 37 remaining) [2023-09-01 08:21:28,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 37 remaining) [2023-09-01 08:21:28,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 37 remaining) [2023-09-01 08:21:28,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 37 remaining) [2023-09-01 08:21:28,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 37 remaining) [2023-09-01 08:21:28,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 37 remaining) [2023-09-01 08:21:28,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 37 remaining) [2023-09-01 08:21:28,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 37 remaining) [2023-09-01 08:21:28,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 37 remaining) [2023-09-01 08:21:28,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 37 remaining) [2023-09-01 08:21:28,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 37 remaining) [2023-09-01 08:21:28,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 37 remaining) [2023-09-01 08:21:28,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 37 remaining) [2023-09-01 08:21:28,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 37 remaining) [2023-09-01 08:21:28,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 37 remaining) [2023-09-01 08:21:28,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 37 remaining) [2023-09-01 08:21:28,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 37 remaining) [2023-09-01 08:21:28,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 37 remaining) [2023-09-01 08:21:28,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 37 remaining) [2023-09-01 08:21:28,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 37 remaining) [2023-09-01 08:21:28,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 37 remaining) [2023-09-01 08:21:28,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 37 remaining) [2023-09-01 08:21:28,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 37 remaining) [2023-09-01 08:21:28,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 37 remaining) [2023-09-01 08:21:28,986 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 08:21:29,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 08:21:29,187 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:29,191 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:21:29,192 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:21:29,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:21:29 BasicIcfg [2023-09-01 08:21:29,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:21:29,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:21:29,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:21:29,195 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:21:29,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:32" (3/4) ... [2023-09-01 08:21:29,198 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:21:29,203 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:21:29,203 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:21:29,203 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 08:21:29,209 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-09-01 08:21:29,210 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:21:29,210 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:21:29,210 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:21:29,241 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:21:29,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:21:29,242 INFO L158 Benchmark]: Toolchain (without parser) took 57994.19ms. Allocated memory was 81.8MB in the beginning and 13.4GB in the end (delta: 13.3GB). Free memory was 56.3MB in the beginning and 11.1GB in the end (delta: -11.1GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2023-09-01 08:21:29,242 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 38.2MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:21:29,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.17ms. Allocated memory is still 81.8MB. Free memory was 56.0MB in the beginning and 44.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:21:29,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.83ms. Allocated memory is still 81.8MB. Free memory was 44.5MB in the beginning and 42.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:21:29,243 INFO L158 Benchmark]: Boogie Preprocessor took 57.91ms. Allocated memory is still 81.8MB. Free memory was 42.7MB in the beginning and 41.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:21:29,243 INFO L158 Benchmark]: RCFGBuilder took 607.49ms. Allocated memory is still 81.8MB. Free memory was 41.0MB in the beginning and 43.2MB in the end (delta: -2.2MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2023-09-01 08:21:29,243 INFO L158 Benchmark]: TraceAbstraction took 56944.36ms. Allocated memory was 81.8MB in the beginning and 13.4GB in the end (delta: 13.3GB). Free memory was 42.2MB in the beginning and 11.1GB in the end (delta: -11.1GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2023-09-01 08:21:29,244 INFO L158 Benchmark]: Witness Printer took 46.21ms. Allocated memory is still 13.4GB. Free memory was 11.1GB in the beginning and 11.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:21:29,245 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 38.2MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.17ms. Allocated memory is still 81.8MB. Free memory was 56.0MB in the beginning and 44.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.83ms. Allocated memory is still 81.8MB. Free memory was 44.5MB in the beginning and 42.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.91ms. Allocated memory is still 81.8MB. Free memory was 42.7MB in the beginning and 41.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 607.49ms. Allocated memory is still 81.8MB. Free memory was 41.0MB in the beginning and 43.2MB in the end (delta: -2.2MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * TraceAbstraction took 56944.36ms. Allocated memory was 81.8MB in the beginning and 13.4GB in the end (delta: 13.3GB). Free memory was 42.2MB in the beginning and 11.1GB in the end (delta: -11.1GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. * Witness Printer took 46.21ms. Allocated memory is still 13.4GB. Free memory was 11.1GB in the beginning and 11.1GB in the end (delta: 4.2MB). 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: 6.9s, 184 PlacesBefore, 50 PlacesAfterwards, 188 TransitionsBefore, 46 TransitionsAfterwards, 7406 CoEnabledTransitionPairs, 7 FixpointIterations, 77 TrivialSequentialCompositions, 95 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 20 ConcurrentYvCompositions, 8 ChoiceCompositions, 211 TotalNumberOfCompositions, 8678 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8195, independent: 8155, independent conditional: 0, independent unconditional: 8155, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4312, independent: 4298, independent conditional: 0, independent unconditional: 4298, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8195, independent: 3857, independent conditional: 0, independent unconditional: 3857, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 4312, unknown conditional: 0, unknown unconditional: 4312] , Statistics on independence cache: Total cache size (in pairs): 199, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: 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, 281 locations, 37 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: 56.7s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 43.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4574 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4168 mSDsluCounter, 658 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 569 mSDsCounter, 136 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5768 IncrementalHoareTripleChecker+Invalid, 5904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 136 mSolverCounterUnsat, 89 mSDtfsCounter, 5768 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=479occurred in iteration=17, InterpolantAutomatonStates: 127, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 283 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 991 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1675 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 36 InterpolantComputations, 11 PerfectInterpolantSequences, 276/509 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:21:29,266 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