./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 AFTER --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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:48:32,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:48:32,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:48:32,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:48:32,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:48:32,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:48:32,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:48:32,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:48:32,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:48:32,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:48:32,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:48:32,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:48:32,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:48:32,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:48:32,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:48:32,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:48:32,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:48:32,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:48:32,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:48:32,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:48:32,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:48:32,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:48:32,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:48:32,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:48:32,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:48:32,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:48:32,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:48:32,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:48:32,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:48:32,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:48:32,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:48:32,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:48:32,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:48:32,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:48:32,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:48:32,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:48:32,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:48:32,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:48:32,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:48:32,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:48:32,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:48:32,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:48:32,395 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:48:32,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:48:32,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:48:32,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:48:32,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:48:32,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:48:32,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:48:32,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:48:32,399 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:48:32,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:48:32,400 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:48:32,400 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:48:32,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:48:32,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:48:32,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:48:32,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:48:32,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:48:32,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:48:32,401 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:48:32,402 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:48:32,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:48:32,402 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:48:32,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:48:32,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:48:32,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:48:32,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:48:32,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:48:32,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:48:32,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:48:32,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:48:32,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:48:32,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:48:32,404 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:48:32,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:48:32,405 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:48:32,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:48:32,405 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:48:32,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:48:32,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:48:32,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:48:32,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:48:32,727 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:48:32,727 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:48:32,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2023-08-30 11:48:33,912 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:48:34,089 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:48:34,090 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2023-08-30 11:48:34,099 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9d02b3ce/0c0f5aa1bfa946f68e663ba99a607190/FLAG5b919770a [2023-08-30 11:48:34,110 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9d02b3ce/0c0f5aa1bfa946f68e663ba99a607190 [2023-08-30 11:48:34,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:48:34,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:48:34,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:48:34,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:48:34,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:48:34,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622a75f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34, skipping insertion in model container [2023-08-30 11:48:34,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:48:34,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:48:34,280 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] [2023-08-30 11:48:34,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:48:34,293 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:48:34,311 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] [2023-08-30 11:48:34,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:48:34,333 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:48:34,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34 WrapperNode [2023-08-30 11:48:34,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:48:34,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:48:34,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:48:34,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:48:34,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,381 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 110 [2023-08-30 11:48:34,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:48:34,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:48:34,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:48:34,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:48:34,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,410 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:48:34,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:48:34,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:48:34,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:48:34,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (1/1) ... [2023-08-30 11:48:34,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:48:34,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:34,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:48:34,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:48:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:48:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:48:34,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:48:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:48:34,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:48:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:48:34,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:48:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:48:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:48:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:48:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:48:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:48:34,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:48:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:48:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:48:34,478 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:48:34,562 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:48:34,564 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:48:34,914 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:48:34,922 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:48:34,923 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:48:34,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:34 BoogieIcfgContainer [2023-08-30 11:48:34,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:48:34,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:48:34,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:48:34,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:48:34,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:48:34" (1/3) ... [2023-08-30 11:48:34,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d48ad38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:48:34, skipping insertion in model container [2023-08-30 11:48:34,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:34" (2/3) ... [2023-08-30 11:48:34,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d48ad38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:48:34, skipping insertion in model container [2023-08-30 11:48:34,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:34" (3/3) ... [2023-08-30 11:48:34,931 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-08-30 11:48:34,937 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:48:34,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:48:34,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 11:48:34,945 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:48:35,068 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:48:35,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 209 transitions, 442 flow [2023-08-30 11:48:35,177 INFO L130 PetriNetUnfolder]: 15/206 cut-off events. [2023-08-30 11:48:35,178 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:48:35,187 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. [2023-08-30 11:48:35,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 209 transitions, 442 flow [2023-08-30 11:48:35,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 188 transitions, 391 flow [2023-08-30 11:48:35,195 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:48:35,206 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 188 transitions, 391 flow [2023-08-30 11:48:35,208 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 188 transitions, 391 flow [2023-08-30 11:48:35,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 188 transitions, 391 flow [2023-08-30 11:48:35,274 INFO L130 PetriNetUnfolder]: 14/188 cut-off events. [2023-08-30 11:48:35,274 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:48:35,276 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. [2023-08-30 11:48:35,279 INFO L119 LiptonReduction]: Number of co-enabled transitions 7406 [2023-08-30 11:48:41,768 INFO L134 LiptonReduction]: Checked pairs total: 8678 [2023-08-30 11:48:41,769 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-30 11:48:41,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:48:41,785 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;@5713c062, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:48:41,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-30 11:48:41,788 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:48:41,788 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:48:41,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:41,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:48:41,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:48:41,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:41,794 INFO L85 PathProgramCache]: Analyzing trace with hash 26104, now seen corresponding path program 1 times [2023-08-30 11:48:41,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:41,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975169633] [2023-08-30 11:48:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:41,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:42,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:42,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975169633] [2023-08-30 11:48:42,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975169633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:42,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:42,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:48:42,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775082784] [2023-08-30 11:48:42,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:42,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:42,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:42,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 420 [2023-08-30 11:48:42,144 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) [2023-08-30 11:48:42,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:42,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 420 [2023-08-30 11:48:42,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:43,171 INFO L130 PetriNetUnfolder]: 9161/12051 cut-off events. [2023-08-30 11:48:43,172 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2023-08-30 11:48:43,185 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. [2023-08-30 11:48:43,259 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 71 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 11:48:43,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 332 flow [2023-08-30 11:48:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-30 11:48:43,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190476190476191 [2023-08-30 11:48:43,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-30 11:48:43,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-30 11:48:43,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:43,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-30 11:48:43,287 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) [2023-08-30 11:48:43,294 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) [2023-08-30 11:48:43,295 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) [2023-08-30 11:48:43,297 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 654 transitions. [2023-08-30 11:48:43,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 332 flow [2023-08-30 11:48:43,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:48:43,331 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 106 flow [2023-08-30 11:48:43,333 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} [2023-08-30 11:48:43,336 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-30 11:48:43,336 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 106 flow [2023-08-30 11:48:43,337 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) [2023-08-30 11:48:43,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:43,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:48:43,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:48:43,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:48:43,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:43,342 INFO L85 PathProgramCache]: Analyzing trace with hash 810931, now seen corresponding path program 1 times [2023-08-30 11:48:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:43,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12006154] [2023-08-30 11:48:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:43,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:43,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:43,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12006154] [2023-08-30 11:48:43,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12006154] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:43,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618075605] [2023-08-30 11:48:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:43,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:43,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:43,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:43,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:48:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:43,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:43,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:43,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:43,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618075605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:43,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:43,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:48:43,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928900441] [2023-08-30 11:48:43,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:48:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:48:43,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:48:43,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 420 [2023-08-30 11:48:43,651 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) [2023-08-30 11:48:43,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:43,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 420 [2023-08-30 11:48:43,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:44,597 INFO L130 PetriNetUnfolder]: 9161/12050 cut-off events. [2023-08-30 11:48:44,597 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 11:48:44,607 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. [2023-08-30 11:48:44,656 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 70 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 11:48:44,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 77 transitions, 320 flow [2023-08-30 11:48:44,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:48:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:48:44,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 837 transitions. [2023-08-30 11:48:44,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982142857142857 [2023-08-30 11:48:44,659 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 837 transitions. [2023-08-30 11:48:44,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 837 transitions. [2023-08-30 11:48:44,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:44,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 837 transitions. [2023-08-30 11:48:44,662 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) [2023-08-30 11:48:44,666 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) [2023-08-30 11:48:44,667 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) [2023-08-30 11:48:44,667 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 106 flow. Second operand 4 states and 837 transitions. [2023-08-30 11:48:44,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 77 transitions, 320 flow [2023-08-30 11:48:44,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:44,669 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 104 flow [2023-08-30 11:48:44,669 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} [2023-08-30 11:48:44,670 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-30 11:48:44,670 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 104 flow [2023-08-30 11:48:44,671 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) [2023-08-30 11:48:44,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:44,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:48:44,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:48:44,876 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 [2023-08-30 11:48:44,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:48:44,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:44,877 INFO L85 PathProgramCache]: Analyzing trace with hash 810941, now seen corresponding path program 1 times [2023-08-30 11:48:44,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:44,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604534775] [2023-08-30 11:48:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:44,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:44,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:44,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604534775] [2023-08-30 11:48:44,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604534775] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:44,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701770159] [2023-08-30 11:48:44,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:44,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:44,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:44,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:44,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:48:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:45,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:45,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:45,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:48:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:45,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701770159] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:48:45,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:48:45,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:48:45,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318371474] [2023-08-30 11:48:45,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:48:45,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:48:45,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:45,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:48:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:48:45,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 420 [2023-08-30 11:48:45,103 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) [2023-08-30 11:48:45,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:45,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 420 [2023-08-30 11:48:45,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:47,206 INFO L130 PetriNetUnfolder]: 22901/30122 cut-off events. [2023-08-30 11:48:47,207 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-30 11:48:47,241 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. [2023-08-30 11:48:47,369 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 172 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2023-08-30 11:48:47,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 182 transitions, 766 flow [2023-08-30 11:48:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:48:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:48:47,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1326 transitions. [2023-08-30 11:48:47,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261904761904762 [2023-08-30 11:48:47,373 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1326 transitions. [2023-08-30 11:48:47,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1326 transitions. [2023-08-30 11:48:47,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:47,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1326 transitions. [2023-08-30 11:48:47,377 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) [2023-08-30 11:48:47,381 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) [2023-08-30 11:48:47,383 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) [2023-08-30 11:48:47,383 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 104 flow. Second operand 6 states and 1326 transitions. [2023-08-30 11:48:47,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 182 transitions, 766 flow [2023-08-30 11:48:47,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 182 transitions, 763 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:48:47,388 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 137 flow [2023-08-30 11:48:47,388 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} [2023-08-30 11:48:47,389 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-30 11:48:47,390 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 137 flow [2023-08-30 11:48:47,393 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) [2023-08-30 11:48:47,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:47,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:48:47,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:47,599 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 [2023-08-30 11:48:47,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:48:47,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:47,599 INFO L85 PathProgramCache]: Analyzing trace with hash 779419965, now seen corresponding path program 1 times [2023-08-30 11:48:47,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:47,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522687613] [2023-08-30 11:48:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:47,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:47,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:47,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522687613] [2023-08-30 11:48:47,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522687613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:47,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:47,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:47,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005935960] [2023-08-30 11:48:47,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:47,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:48:47,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:47,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:48:47,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:48:47,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 420 [2023-08-30 11:48:47,801 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) [2023-08-30 11:48:47,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:47,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 420 [2023-08-30 11:48:47,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:49,382 INFO L130 PetriNetUnfolder]: 22901/29272 cut-off events. [2023-08-30 11:48:49,382 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 11:48:49,416 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. [2023-08-30 11:48:49,531 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 40 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 11:48:49,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 215 flow [2023-08-30 11:48:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-08-30 11:48:49,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738095238095238 [2023-08-30 11:48:49,535 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-08-30 11:48:49,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-08-30 11:48:49,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:49,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-08-30 11:48:49,539 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) [2023-08-30 11:48:49,541 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) [2023-08-30 11:48:49,542 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) [2023-08-30 11:48:49,542 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 137 flow. Second operand 3 states and 597 transitions. [2023-08-30 11:48:49,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 215 flow [2023-08-30 11:48:49,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 207 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:49,544 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 127 flow [2023-08-30 11:48:49,545 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} [2023-08-30 11:48:49,546 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 11:48:49,546 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 127 flow [2023-08-30 11:48:49,547 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) [2023-08-30 11:48:49,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:49,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:48:49,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:48:49,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:48:49,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:49,548 INFO L85 PathProgramCache]: Analyzing trace with hash 779420244, now seen corresponding path program 1 times [2023-08-30 11:48:49,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:49,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991341261] [2023-08-30 11:48:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:49,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:49,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:49,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991341261] [2023-08-30 11:48:49,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991341261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:49,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:49,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:49,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97671810] [2023-08-30 11:48:49,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:49,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:49,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:49,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 420 [2023-08-30 11:48:49,606 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) [2023-08-30 11:48:49,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:49,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 420 [2023-08-30 11:48:49,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:51,758 INFO L130 PetriNetUnfolder]: 34721/44892 cut-off events. [2023-08-30 11:48:51,758 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2023-08-30 11:48:51,805 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. [2023-08-30 11:48:51,948 INFO L137 encePairwiseOnDemand]: 415/420 looper letters, 69 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-30 11:48:51,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 73 transitions, 332 flow [2023-08-30 11:48:51,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-08-30 11:48:51,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-08-30 11:48:51,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-08-30 11:48:51,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-08-30 11:48:51,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:51,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-08-30 11:48:51,954 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) [2023-08-30 11:48:51,957 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) [2023-08-30 11:48:51,960 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) [2023-08-30 11:48:51,961 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 127 flow. Second operand 3 states and 640 transitions. [2023-08-30 11:48:51,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 73 transitions, 332 flow [2023-08-30 11:48:51,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 73 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:51,963 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 142 flow [2023-08-30 11:48:51,963 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} [2023-08-30 11:48:51,965 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-08-30 11:48:51,965 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 142 flow [2023-08-30 11:48:51,966 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) [2023-08-30 11:48:51,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:51,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:48:51,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:48:51,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:48:51,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash 779420139, now seen corresponding path program 1 times [2023-08-30 11:48:51,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:51,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179268851] [2023-08-30 11:48:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179268851] [2023-08-30 11:48:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179268851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:52,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:52,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:48:52,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479394155] [2023-08-30 11:48:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:52,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:52,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:52,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:52,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 420 [2023-08-30 11:48:52,022 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) [2023-08-30 11:48:52,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:52,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 420 [2023-08-30 11:48:52,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:53,607 INFO L130 PetriNetUnfolder]: 22841/29907 cut-off events. [2023-08-30 11:48:53,607 INFO L131 PetriNetUnfolder]: For 1568/2078 co-relation queries the response was YES. [2023-08-30 11:48:53,637 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. [2023-08-30 11:48:53,706 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 39 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 11:48:53,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 218 flow [2023-08-30 11:48:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-08-30 11:48:53,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476984126984127 [2023-08-30 11:48:53,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-08-30 11:48:53,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-08-30 11:48:53,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:53,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-08-30 11:48:53,712 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) [2023-08-30 11:48:53,713 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) [2023-08-30 11:48:53,714 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) [2023-08-30 11:48:53,714 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 142 flow. Second operand 3 states and 601 transitions. [2023-08-30 11:48:53,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 218 flow [2023-08-30 11:48:53,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:53,716 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 138 flow [2023-08-30 11:48:53,716 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} [2023-08-30 11:48:53,716 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-30 11:48:53,717 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 138 flow [2023-08-30 11:48:53,717 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) [2023-08-30 11:48:53,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:53,717 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:48:53,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:48:53,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:48:53,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1609663294, now seen corresponding path program 2 times [2023-08-30 11:48:53,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:53,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931127962] [2023-08-30 11:48:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:53,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:53,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:53,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931127962] [2023-08-30 11:48:53,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931127962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:53,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90513346] [2023-08-30 11:48:53,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:48:53,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:53,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:53,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:53,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:48:53,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:48:53,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:48:53,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:48:53,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:48:53,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:53,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90513346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:53,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:53,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:48:53,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775520841] [2023-08-30 11:48:53,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:53,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:53,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:53,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:48:53,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 420 [2023-08-30 11:48:53,898 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) [2023-08-30 11:48:53,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:53,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 420 [2023-08-30 11:48:53,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:55,318 INFO L130 PetriNetUnfolder]: 22841/29906 cut-off events. [2023-08-30 11:48:55,318 INFO L131 PetriNetUnfolder]: For 1563/2073 co-relation queries the response was YES. [2023-08-30 11:48:55,371 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. [2023-08-30 11:48:55,465 INFO L137 encePairwiseOnDemand]: 418/420 looper letters, 38 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 11:48:55,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 206 flow [2023-08-30 11:48:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 11:48:55,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849206349206349 [2023-08-30 11:48:55,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 11:48:55,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 11:48:55,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:55,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 11:48:55,469 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) [2023-08-30 11:48:55,470 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) [2023-08-30 11:48:55,470 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) [2023-08-30 11:48:55,470 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 138 flow. Second operand 3 states and 611 transitions. [2023-08-30 11:48:55,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 206 flow [2023-08-30 11:48:55,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 195 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 11:48:55,472 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 119 flow [2023-08-30 11:48:55,472 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} [2023-08-30 11:48:55,472 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-08-30 11:48:55,473 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 119 flow [2023-08-30 11:48:55,473 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) [2023-08-30 11:48:55,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:55,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:55,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:55,678 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 [2023-08-30 11:48:55,678 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:48:55,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:55,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1698560992, now seen corresponding path program 1 times [2023-08-30 11:48:55,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:55,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137729036] [2023-08-30 11:48:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:55,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:55,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:55,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137729036] [2023-08-30 11:48:55,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137729036] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:55,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103890628] [2023-08-30 11:48:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:55,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:55,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:55,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:55,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:48:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:55,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:48:55,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:55,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:55,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103890628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:55,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:55,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 11:48:55,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792651256] [2023-08-30 11:48:55,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:55,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:48:55,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:55,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:48:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:48:55,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 420 [2023-08-30 11:48:55,934 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) [2023-08-30 11:48:55,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:55,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 420 [2023-08-30 11:48:55,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:57,327 INFO L130 PetriNetUnfolder]: 19601/25690 cut-off events. [2023-08-30 11:48:57,328 INFO L131 PetriNetUnfolder]: For 1652/1652 co-relation queries the response was YES. [2023-08-30 11:48:57,367 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. [2023-08-30 11:48:57,451 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 11:48:57,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 199 flow [2023-08-30 11:48:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-30 11:48:57,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2023-08-30 11:48:57,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-30 11:48:57,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-30 11:48:57,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:57,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-30 11:48:57,455 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) [2023-08-30 11:48:57,456 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) [2023-08-30 11:48:57,457 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) [2023-08-30 11:48:57,457 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 119 flow. Second operand 3 states and 574 transitions. [2023-08-30 11:48:57,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 199 flow [2023-08-30 11:48:57,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 196 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:57,460 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 124 flow [2023-08-30 11:48:57,460 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} [2023-08-30 11:48:57,461 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-08-30 11:48:57,461 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 124 flow [2023-08-30 11:48:57,461 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) [2023-08-30 11:48:57,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:57,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:57,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 11:48:57,666 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 [2023-08-30 11:48:57,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:48:57,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:57,666 INFO L85 PathProgramCache]: Analyzing trace with hash -639639803, now seen corresponding path program 1 times [2023-08-30 11:48:57,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:57,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995813642] [2023-08-30 11:48:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:57,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:48:57,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:57,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995813642] [2023-08-30 11:48:57,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995813642] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:57,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089522672] [2023-08-30 11:48:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:57,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:57,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:57,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:57,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:48:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:57,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:48:57,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:57,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:48:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:57,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089522672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:48:57,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:48:57,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-08-30 11:48:57,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793924366] [2023-08-30 11:48:57,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:48:57,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 11:48:57,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:57,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 11:48:57,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-30 11:48:58,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 420 [2023-08-30 11:48:58,126 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) [2023-08-30 11:48:58,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:58,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 420 [2023-08-30 11:48:58,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:59,503 INFO L130 PetriNetUnfolder]: 14916/19255 cut-off events. [2023-08-30 11:48:59,503 INFO L131 PetriNetUnfolder]: For 764/764 co-relation queries the response was YES. [2023-08-30 11:48:59,532 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. [2023-08-30 11:48:59,586 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 153 selfloop transitions, 9 changer transitions 0/164 dead transitions. [2023-08-30 11:48:59,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 164 transitions, 715 flow [2023-08-30 11:48:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 11:48:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 11:48:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1924 transitions. [2023-08-30 11:48:59,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580952380952381 [2023-08-30 11:48:59,591 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1924 transitions. [2023-08-30 11:48:59,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1924 transitions. [2023-08-30 11:48:59,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:59,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1924 transitions. [2023-08-30 11:48:59,596 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) [2023-08-30 11:48:59,601 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) [2023-08-30 11:48:59,602 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) [2023-08-30 11:48:59,602 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 124 flow. Second operand 10 states and 1924 transitions. [2023-08-30 11:48:59,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 164 transitions, 715 flow [2023-08-30 11:48:59,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 164 transitions, 711 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:48:59,606 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 154 flow [2023-08-30 11:48:59,606 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} [2023-08-30 11:48:59,606 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-08-30 11:48:59,607 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 154 flow [2023-08-30 11:48:59,607 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) [2023-08-30 11:48:59,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:59,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:59,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:59,813 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 [2023-08-30 11:48:59,813 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:48:59,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:59,813 INFO L85 PathProgramCache]: Analyzing trace with hash -632103114, now seen corresponding path program 1 times [2023-08-30 11:48:59,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:59,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265172688] [2023-08-30 11:48:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:59,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:48:59,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:59,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265172688] [2023-08-30 11:48:59,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265172688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:59,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:59,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:59,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687514114] [2023-08-30 11:48:59,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:59,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:59,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:59,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:59,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 420 [2023-08-30 11:48:59,875 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) [2023-08-30 11:48:59,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:59,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 420 [2023-08-30 11:48:59,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:01,316 INFO L130 PetriNetUnfolder]: 17084/22729 cut-off events. [2023-08-30 11:49:01,316 INFO L131 PetriNetUnfolder]: For 4240/4395 co-relation queries the response was YES. [2023-08-30 11:49:01,359 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. [2023-08-30 11:49:01,430 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 64 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 11:49:01,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 358 flow [2023-08-30 11:49:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 629 transitions. [2023-08-30 11:49:01,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992063492063492 [2023-08-30 11:49:01,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 629 transitions. [2023-08-30 11:49:01,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 629 transitions. [2023-08-30 11:49:01,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:01,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 629 transitions. [2023-08-30 11:49:01,434 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) [2023-08-30 11:49:01,436 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) [2023-08-30 11:49:01,436 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) [2023-08-30 11:49:01,436 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 154 flow. Second operand 3 states and 629 transitions. [2023-08-30 11:49:01,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 358 flow [2023-08-30 11:49:01,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 11:49:01,440 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 161 flow [2023-08-30 11:49:01,440 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} [2023-08-30 11:49:01,441 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-08-30 11:49:01,441 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 161 flow [2023-08-30 11:49:01,442 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) [2023-08-30 11:49:01,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:01,442 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:01,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:49:01,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:49:01,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash 902934857, now seen corresponding path program 1 times [2023-08-30 11:49:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:01,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462102662] [2023-08-30 11:49:01,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:01,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:49:01,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:01,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462102662] [2023-08-30 11:49:01,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462102662] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:01,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878599032] [2023-08-30 11:49:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:01,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:01,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:01,495 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) [2023-08-30 11:49:01,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:49:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:01,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 11:49:01,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:01,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:01,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878599032] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:01,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:01,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2023-08-30 11:49:01,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290961391] [2023-08-30 11:49:01,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:01,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 11:49:01,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:01,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 11:49:01,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-08-30 11:49:02,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 420 [2023-08-30 11:49:02,049 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) [2023-08-30 11:49:02,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:02,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 420 [2023-08-30 11:49:02,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:04,032 INFO L130 PetriNetUnfolder]: 20793/27616 cut-off events. [2023-08-30 11:49:04,032 INFO L131 PetriNetUnfolder]: For 4704/5234 co-relation queries the response was YES. [2023-08-30 11:49:04,103 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. [2023-08-30 11:49:04,183 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 292 selfloop transitions, 17 changer transitions 0/311 dead transitions. [2023-08-30 11:49:04,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 311 transitions, 1545 flow [2023-08-30 11:49:04,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 11:49:04,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 11:49:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3290 transitions. [2023-08-30 11:49:04,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2023-08-30 11:49:04,190 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3290 transitions. [2023-08-30 11:49:04,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3290 transitions. [2023-08-30 11:49:04,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:04,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3290 transitions. [2023-08-30 11:49:04,197 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) [2023-08-30 11:49:04,205 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) [2023-08-30 11:49:04,207 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) [2023-08-30 11:49:04,207 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 161 flow. Second operand 17 states and 3290 transitions. [2023-08-30 11:49:04,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 311 transitions, 1545 flow [2023-08-30 11:49:04,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 311 transitions, 1531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:04,217 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 244 flow [2023-08-30 11:49:04,217 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} [2023-08-30 11:49:04,217 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-08-30 11:49:04,218 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 244 flow [2023-08-30 11:49:04,219 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) [2023-08-30 11:49:04,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:04,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:04,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 11:49:04,424 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 [2023-08-30 11:49:04,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:49:04,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:04,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1860680428, now seen corresponding path program 1 times [2023-08-30 11:49:04,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:04,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84225719] [2023-08-30 11:49:04,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:04,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:49:04,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84225719] [2023-08-30 11:49:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84225719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696167961] [2023-08-30 11:49:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:04,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:04,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:04,474 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) [2023-08-30 11:49:04,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:49:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:04,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:49:04,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:49:04,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:49:04,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696167961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:04,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:49:04,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:49:04,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9612339] [2023-08-30 11:49:04,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:04,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:49:04,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:04,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:49:04,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:49:04,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 420 [2023-08-30 11:49:04,576 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) [2023-08-30 11:49:04,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:04,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 420 [2023-08-30 11:49:04,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:05,691 INFO L130 PetriNetUnfolder]: 17605/23344 cut-off events. [2023-08-30 11:49:05,692 INFO L131 PetriNetUnfolder]: For 11450/11582 co-relation queries the response was YES. [2023-08-30 11:49:05,744 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. [2023-08-30 11:49:05,813 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 96 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-30 11:49:05,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 102 transitions, 659 flow [2023-08-30 11:49:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:49:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:49:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 830 transitions. [2023-08-30 11:49:05,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2023-08-30 11:49:05,816 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 830 transitions. [2023-08-30 11:49:05,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 830 transitions. [2023-08-30 11:49:05,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:05,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 830 transitions. [2023-08-30 11:49:05,818 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) [2023-08-30 11:49:05,820 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) [2023-08-30 11:49:05,820 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) [2023-08-30 11:49:05,820 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 244 flow. Second operand 4 states and 830 transitions. [2023-08-30 11:49:05,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 102 transitions, 659 flow [2023-08-30 11:49:05,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 617 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-30 11:49:05,832 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 214 flow [2023-08-30 11:49:05,832 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} [2023-08-30 11:49:05,832 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-30 11:49:05,833 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 214 flow [2023-08-30 11:49:05,833 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) [2023-08-30 11:49:05,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:05,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:05,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:06,036 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 [2023-08-30 11:49:06,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:49:06,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1860680408, now seen corresponding path program 1 times [2023-08-30 11:49:06,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:06,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606435976] [2023-08-30 11:49:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:06,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:49:06,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:06,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606435976] [2023-08-30 11:49:06,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606435976] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:06,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570082418] [2023-08-30 11:49:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:06,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:06,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:06,082 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) [2023-08-30 11:49:06,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:49:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:06,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:49:06,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:49:06,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:49:06,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570082418] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:06,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:06,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:49:06,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21675357] [2023-08-30 11:49:06,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:06,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:49:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:06,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:49:06,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:49:06,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 420 [2023-08-30 11:49:06,223 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) [2023-08-30 11:49:06,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:06,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 420 [2023-08-30 11:49:06,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:08,697 INFO L130 PetriNetUnfolder]: 37196/49181 cut-off events. [2023-08-30 11:49:08,697 INFO L131 PetriNetUnfolder]: For 19527/19802 co-relation queries the response was YES. [2023-08-30 11:49:08,872 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. [2023-08-30 11:49:09,016 INFO L137 encePairwiseOnDemand]: 415/420 looper letters, 159 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2023-08-30 11:49:09,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 169 transitions, 1004 flow [2023-08-30 11:49:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:49:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:49:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1259 transitions. [2023-08-30 11:49:09,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4996031746031746 [2023-08-30 11:49:09,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1259 transitions. [2023-08-30 11:49:09,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1259 transitions. [2023-08-30 11:49:09,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:09,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1259 transitions. [2023-08-30 11:49:09,022 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) [2023-08-30 11:49:09,024 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) [2023-08-30 11:49:09,025 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) [2023-08-30 11:49:09,025 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 214 flow. Second operand 6 states and 1259 transitions. [2023-08-30 11:49:09,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 169 transitions, 1004 flow [2023-08-30 11:49:09,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 169 transitions, 1001 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:49:09,043 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 263 flow [2023-08-30 11:49:09,043 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} [2023-08-30 11:49:09,044 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-08-30 11:49:09,044 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 263 flow [2023-08-30 11:49:09,045 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) [2023-08-30 11:49:09,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:09,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:09,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:09,248 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 [2023-08-30 11:49:09,248 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:49:09,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:09,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1853928655, now seen corresponding path program 1 times [2023-08-30 11:49:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:09,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69116677] [2023-08-30 11:49:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:09,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:49:09,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:09,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69116677] [2023-08-30 11:49:09,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69116677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:09,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:09,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:49:09,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949990034] [2023-08-30 11:49:09,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:09,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:49:09,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:49:09,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:49:09,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 420 [2023-08-30 11:49:09,322 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) [2023-08-30 11:49:09,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:09,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 420 [2023-08-30 11:49:09,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:10,731 INFO L130 PetriNetUnfolder]: 19451/26988 cut-off events. [2023-08-30 11:49:10,731 INFO L131 PetriNetUnfolder]: For 25713/26202 co-relation queries the response was YES. [2023-08-30 11:49:10,818 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. [2023-08-30 11:49:10,889 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 73 selfloop transitions, 2 changer transitions 4/83 dead transitions. [2023-08-30 11:49:10,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 581 flow [2023-08-30 11:49:10,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:49:10,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:49:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 801 transitions. [2023-08-30 11:49:10,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767857142857143 [2023-08-30 11:49:10,891 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 801 transitions. [2023-08-30 11:49:10,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 801 transitions. [2023-08-30 11:49:10,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:10,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 801 transitions. [2023-08-30 11:49:10,893 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) [2023-08-30 11:49:10,895 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) [2023-08-30 11:49:10,895 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) [2023-08-30 11:49:10,895 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 263 flow. Second operand 4 states and 801 transitions. [2023-08-30 11:49:10,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 581 flow [2023-08-30 11:49:10,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:10,928 INFO L231 Difference]: Finished difference. Result has 77 places, 50 transitions, 250 flow [2023-08-30 11:49:10,929 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} [2023-08-30 11:49:10,929 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-08-30 11:49:10,929 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 50 transitions, 250 flow [2023-08-30 11:49:10,929 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) [2023-08-30 11:49:10,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:10,930 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2023-08-30 11:49:10,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 11:49:10,930 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:49:10,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash -345853896, now seen corresponding path program 2 times [2023-08-30 11:49:10,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:10,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706928773] [2023-08-30 11:49:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:10,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:11,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:11,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706928773] [2023-08-30 11:49:11,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706928773] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:11,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190382265] [2023-08-30 11:49:11,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:49:11,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:11,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:11,087 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) [2023-08-30 11:49:11,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 11:49:11,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:49:11,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:49:11,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:49:11,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:49:11,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:49:11,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190382265] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:11,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:11,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 2, 2] total 13 [2023-08-30 11:49:11,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265965371] [2023-08-30 11:49:11,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:11,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 11:49:11,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:11,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 11:49:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-30 11:49:11,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 420 [2023-08-30 11:49:11,535 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) [2023-08-30 11:49:11,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:11,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 420 [2023-08-30 11:49:11,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:13,934 INFO L130 PetriNetUnfolder]: 20649/27902 cut-off events. [2023-08-30 11:49:13,934 INFO L131 PetriNetUnfolder]: For 21780/22095 co-relation queries the response was YES. [2023-08-30 11:49:13,986 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. [2023-08-30 11:49:14,038 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 377 selfloop transitions, 28 changer transitions 19/426 dead transitions. [2023-08-30 11:49:14,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 426 transitions, 2746 flow [2023-08-30 11:49:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 11:49:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 11:49:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4654 transitions. [2023-08-30 11:49:14,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44323809523809526 [2023-08-30 11:49:14,045 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4654 transitions. [2023-08-30 11:49:14,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4654 transitions. [2023-08-30 11:49:14,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:14,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4654 transitions. [2023-08-30 11:49:14,053 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) [2023-08-30 11:49:14,063 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) [2023-08-30 11:49:14,064 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) [2023-08-30 11:49:14,064 INFO L175 Difference]: Start difference. First operand has 77 places, 50 transitions, 250 flow. Second operand 25 states and 4654 transitions. [2023-08-30 11:49:14,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 426 transitions, 2746 flow [2023-08-30 11:49:14,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 426 transitions, 2743 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:49:14,096 INFO L231 Difference]: Finished difference. Result has 99 places, 57 transitions, 374 flow [2023-08-30 11:49:14,096 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} [2023-08-30 11:49:14,096 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 49 predicate places. [2023-08-30 11:49:14,097 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 57 transitions, 374 flow [2023-08-30 11:49:14,097 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) [2023-08-30 11:49:14,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:14,098 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:14,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:14,306 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 [2023-08-30 11:49:14,306 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:49:14,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:14,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1746142782, now seen corresponding path program 2 times [2023-08-30 11:49:14,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:14,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461449246] [2023-08-30 11:49:14,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-30 11:49:14,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:14,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461449246] [2023-08-30 11:49:14,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461449246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:14,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:14,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:49:14,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109771996] [2023-08-30 11:49:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:14,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:49:14,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:14,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:49:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:49:14,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 420 [2023-08-30 11:49:14,359 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) [2023-08-30 11:49:14,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:14,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 420 [2023-08-30 11:49:14,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:15,632 INFO L130 PetriNetUnfolder]: 13833/18624 cut-off events. [2023-08-30 11:49:15,632 INFO L131 PetriNetUnfolder]: For 23223/23615 co-relation queries the response was YES. [2023-08-30 11:49:15,683 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. [2023-08-30 11:49:15,733 INFO L137 encePairwiseOnDemand]: 418/420 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 11:49:15,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 56 transitions, 464 flow [2023-08-30 11:49:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:15,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2023-08-30 11:49:15,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-30 11:49:15,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2023-08-30 11:49:15,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2023-08-30 11:49:15,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:15,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2023-08-30 11:49:15,738 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) [2023-08-30 11:49:15,739 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) [2023-08-30 11:49:15,739 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) [2023-08-30 11:49:15,740 INFO L175 Difference]: Start difference. First operand has 99 places, 57 transitions, 374 flow. Second operand 3 states and 600 transitions. [2023-08-30 11:49:15,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 56 transitions, 464 flow [2023-08-30 11:49:15,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 56 transitions, 420 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-08-30 11:49:15,779 INFO L231 Difference]: Finished difference. Result has 88 places, 56 transitions, 322 flow [2023-08-30 11:49:15,779 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} [2023-08-30 11:49:15,779 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-08-30 11:49:15,779 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 56 transitions, 322 flow [2023-08-30 11:49:15,780 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) [2023-08-30 11:49:15,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:15,780 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:15,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 11:49:15,780 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:49:15,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1704148665, now seen corresponding path program 1 times [2023-08-30 11:49:15,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:15,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022386362] [2023-08-30 11:49:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:15,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:49:15,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022386362] [2023-08-30 11:49:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022386362] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111242042] [2023-08-30 11:49:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:15,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:15,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:15,855 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) [2023-08-30 11:49:15,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 11:49:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:15,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:49:15,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:49:15,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:49:16,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111242042] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:16,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:16,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:49:16,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029344514] [2023-08-30 11:49:16,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:16,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:49:16,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:49:16,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:49:16,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 420 [2023-08-30 11:49:16,075 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) [2023-08-30 11:49:16,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:16,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 420 [2023-08-30 11:49:16,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:19,115 INFO L130 PetriNetUnfolder]: 35146/47273 cut-off events. [2023-08-30 11:49:19,115 INFO L131 PetriNetUnfolder]: For 59697/60024 co-relation queries the response was YES. [2023-08-30 11:49:19,366 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. [2023-08-30 11:49:19,524 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 344 selfloop transitions, 18 changer transitions 0/367 dead transitions. [2023-08-30 11:49:19,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 367 transitions, 2876 flow [2023-08-30 11:49:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:49:19,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:49:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2458 transitions. [2023-08-30 11:49:19,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876984126984127 [2023-08-30 11:49:19,528 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2458 transitions. [2023-08-30 11:49:19,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2458 transitions. [2023-08-30 11:49:19,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:19,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2458 transitions. [2023-08-30 11:49:19,531 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) [2023-08-30 11:49:19,536 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) [2023-08-30 11:49:19,536 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) [2023-08-30 11:49:19,536 INFO L175 Difference]: Start difference. First operand has 88 places, 56 transitions, 322 flow. Second operand 12 states and 2458 transitions. [2023-08-30 11:49:19,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 367 transitions, 2876 flow [2023-08-30 11:49:19,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 367 transitions, 2875 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:19,642 INFO L231 Difference]: Finished difference. Result has 105 places, 69 transitions, 479 flow [2023-08-30 11:49:19,642 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} [2023-08-30 11:49:19,643 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2023-08-30 11:49:19,643 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 69 transitions, 479 flow [2023-08-30 11:49:19,643 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) [2023-08-30 11:49:19,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:19,643 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:19,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:19,852 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 [2023-08-30 11:49:19,853 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 11:49:19,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:19,853 INFO L85 PathProgramCache]: Analyzing trace with hash 631119493, now seen corresponding path program 2 times [2023-08-30 11:49:19,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:19,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211569199] [2023-08-30 11:49:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:19,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:49:20,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:20,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211569199] [2023-08-30 11:49:20,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211569199] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:20,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376789017] [2023-08-30 11:49:20,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:49:20,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:20,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:20,054 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) [2023-08-30 11:49:20,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 11:49:20,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:49:20,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:49:20,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:49:20,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-08-30 11:49:20,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-08-30 11:49:20,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376789017] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:20,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:20,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 2, 2] total 14 [2023-08-30 11:49:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545176803] [2023-08-30 11:49:20,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:20,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 11:49:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 11:49:20,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2023-08-30 11:49:20,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 420 [2023-08-30 11:49:20,343 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) [2023-08-30 11:49:20,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:20,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 420 [2023-08-30 11:49:20,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:25,569 INFO L130 PetriNetUnfolder]: 39634/53231 cut-off events. [2023-08-30 11:49:25,569 INFO L131 PetriNetUnfolder]: For 101933/102300 co-relation queries the response was YES. [2023-08-30 11:49:25,781 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. [2023-08-30 11:49:25,812 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 0 selfloop transitions, 0 changer transitions 428/428 dead transitions. [2023-08-30 11:49:25,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 428 transitions, 3445 flow [2023-08-30 11:49:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 11:49:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 11:49:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2990 transitions. [2023-08-30 11:49:25,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746031746031746 [2023-08-30 11:49:25,815 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2990 transitions. [2023-08-30 11:49:25,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2990 transitions. [2023-08-30 11:49:25,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:25,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2990 transitions. [2023-08-30 11:49:25,818 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) [2023-08-30 11:49:25,822 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) [2023-08-30 11:49:25,823 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) [2023-08-30 11:49:25,823 INFO L175 Difference]: Start difference. First operand has 105 places, 69 transitions, 479 flow. Second operand 15 states and 2990 transitions. [2023-08-30 11:49:25,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 428 transitions, 3445 flow [2023-08-30 11:49:26,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 428 transitions, 3368 flow, removed 10 selfloop flow, removed 13 redundant places. [2023-08-30 11:49:26,082 INFO L231 Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow [2023-08-30 11:49:26,082 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} [2023-08-30 11:49:26,082 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2023-08-30 11:49:26,082 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow [2023-08-30 11:49:26,083 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) [2023-08-30 11:49:26,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 37 remaining) [2023-08-30 11:49:26,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 37 remaining) [2023-08-30 11:49:26,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 37 remaining) [2023-08-30 11:49:26,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 37 remaining) [2023-08-30 11:49:26,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 37 remaining) [2023-08-30 11:49:26,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 37 remaining) [2023-08-30 11:49:26,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 37 remaining) [2023-08-30 11:49:26,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 37 remaining) [2023-08-30 11:49:26,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 37 remaining) [2023-08-30 11:49:26,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 37 remaining) [2023-08-30 11:49:26,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 37 remaining) [2023-08-30 11:49:26,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 37 remaining) [2023-08-30 11:49:26,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 37 remaining) [2023-08-30 11:49:26,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 37 remaining) [2023-08-30 11:49:26,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 37 remaining) [2023-08-30 11:49:26,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 37 remaining) [2023-08-30 11:49:26,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 37 remaining) [2023-08-30 11:49:26,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 37 remaining) [2023-08-30 11:49:26,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 37 remaining) [2023-08-30 11:49:26,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 37 remaining) [2023-08-30 11:49:26,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 37 remaining) [2023-08-30 11:49:26,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 37 remaining) [2023-08-30 11:49:26,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 37 remaining) [2023-08-30 11:49:26,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 37 remaining) [2023-08-30 11:49:26,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 37 remaining) [2023-08-30 11:49:26,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 37 remaining) [2023-08-30 11:49:26,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 37 remaining) [2023-08-30 11:49:26,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 37 remaining) [2023-08-30 11:49:26,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 37 remaining) [2023-08-30 11:49:26,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 37 remaining) [2023-08-30 11:49:26,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 37 remaining) [2023-08-30 11:49:26,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 37 remaining) [2023-08-30 11:49:26,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 37 remaining) [2023-08-30 11:49:26,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 37 remaining) [2023-08-30 11:49:26,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 37 remaining) [2023-08-30 11:49:26,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 37 remaining) [2023-08-30 11:49:26,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 37 remaining) [2023-08-30 11:49:26,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:26,295 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 [2023-08-30 11:49:26,295 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:26,300 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:49:26,300 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:49:26,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:49:26 BasicIcfg [2023-08-30 11:49:26,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:49:26,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:49:26,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:49:26,304 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:49:26,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:34" (3/4) ... [2023-08-30 11:49:26,306 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:49:26,311 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:49:26,311 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:49:26,311 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 11:49:26,315 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 11:49:26,315 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:49:26,316 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:49:26,316 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:49:26,351 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:49:26,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:49:26,352 INFO L158 Benchmark]: Toolchain (without parser) took 52238.11ms. Allocated memory was 67.1MB in the beginning and 8.7GB in the end (delta: 8.6GB). Free memory was 40.3MB in the beginning and 7.1GB in the end (delta: -7.1GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-08-30 11:49:26,353 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:49:26,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.28ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 40.1MB in the beginning and 68.3MB in the end (delta: -28.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2023-08-30 11:49:26,353 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.95ms. Allocated memory is still 88.1MB. Free memory was 68.3MB in the beginning and 66.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:49:26,353 INFO L158 Benchmark]: Boogie Preprocessor took 38.86ms. Allocated memory is still 88.1MB. Free memory was 66.6MB in the beginning and 64.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:49:26,354 INFO L158 Benchmark]: RCFGBuilder took 502.55ms. Allocated memory is still 88.1MB. Free memory was 64.9MB in the beginning and 45.7MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-30 11:49:26,354 INFO L158 Benchmark]: TraceAbstraction took 51377.46ms. Allocated memory was 88.1MB in the beginning and 8.7GB in the end (delta: 8.6GB). Free memory was 45.0MB in the beginning and 7.1GB in the end (delta: -7.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-08-30 11:49:26,354 INFO L158 Benchmark]: Witness Printer took 47.96ms. Allocated memory is still 8.7GB. Free memory was 7.1GB in the beginning and 7.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:49:26,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.28ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 40.1MB in the beginning and 68.3MB in the end (delta: -28.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.95ms. Allocated memory is still 88.1MB. Free memory was 68.3MB in the beginning and 66.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.86ms. Allocated memory is still 88.1MB. Free memory was 66.6MB in the beginning and 64.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 502.55ms. Allocated memory is still 88.1MB. Free memory was 64.9MB in the beginning and 45.7MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 51377.46ms. Allocated memory was 88.1MB in the beginning and 8.7GB in the end (delta: 8.6GB). Free memory was 45.0MB in the beginning and 7.1GB in the end (delta: -7.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 47.96ms. Allocated memory is still 8.7GB. Free memory was 7.1GB in the beginning and 7.1GB in the end (delta: 3.1MB). 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: 6.6s, 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: 51.2s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 38.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4574 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4168 mSDsluCounter, 658 SdHoareTripleChecker+Invalid, 3.1s 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, 1.9s 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! [2023-08-30 11:49:26,371 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