./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:28:15,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:28:15,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:28:15,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:28:15,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:28:15,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:28:15,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:28:15,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:28:15,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:28:15,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:28:15,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:28:15,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:28:15,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:28:15,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:28:15,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:28:15,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:28:15,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:28:15,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:28:15,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:28:15,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:28:15,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:28:15,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:28:15,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:28:15,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:28:15,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:28:15,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:28:15,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:28:15,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:28:15,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:28:15,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:28:15,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:28:15,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:28:15,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:28:15,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:28:15,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:28:15,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:28:15,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:28:15,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:28:15,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:28:15,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:28:15,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:28:15,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:28:15,710 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:28:15,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:28:15,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:28:15,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:28:15,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:28:15,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:28:15,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:28:15,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:28:15,714 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:28:15,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:28:15,715 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:28:15,715 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:28:15,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:28:15,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:28:15,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:28:15,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:28:15,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:28:15,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:28:15,716 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:28:15,717 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:28:15,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:28:15,717 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:28:15,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:28:15,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:28:15,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:28:15,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:28:15,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:28:15,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:28:15,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:28:15,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:28:15,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:28:15,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:28:15,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:28:15,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:28:15,719 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:28:15,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:28:15,720 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:28:15,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:28:16,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:28:16,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:28:16,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:28:16,052 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:28:16,052 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:28:16,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-30 14:28:17,365 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:28:17,624 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:28:17,625 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-30 14:28:17,653 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de9f3b22b/9e533207261e428ab44aa395031f4033/FLAG05b2b5a74 [2023-08-30 14:28:17,665 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de9f3b22b/9e533207261e428ab44aa395031f4033 [2023-08-30 14:28:17,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:28:17,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:28:17,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:28:17,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:28:17,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:28:17,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:28:17" (1/1) ... [2023-08-30 14:28:17,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5163293c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:17, skipping insertion in model container [2023-08-30 14:28:17,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:28:17" (1/1) ... [2023-08-30 14:28:17,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:28:17,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:28:18,085 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-08-30 14:28:18,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:28:18,183 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:28:18,208 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-08-30 14:28:18,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:28:18,272 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:28:18,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18 WrapperNode [2023-08-30 14:28:18,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:28:18,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:28:18,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:28:18,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:28:18,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,321 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 242 [2023-08-30 14:28:18,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:28:18,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:28:18,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:28:18,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:28:18,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,350 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:28:18,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:28:18,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:28:18,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:28:18,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (1/1) ... [2023-08-30 14:28:18,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:28:18,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:18,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:28:18,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:28:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:28:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 14:28:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 14:28:18,433 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 14:28:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:28:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:28:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 14:28:18,434 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 14:28:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:28:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:28:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:28:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:28:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 14:28:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:28:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:28:18,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:28:18,437 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:28:18,609 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:28:18,611 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:28:19,065 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:28:19,072 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:28:19,073 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 14:28:19,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:28:19 BoogieIcfgContainer [2023-08-30 14:28:19,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:28:19,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:28:19,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:28:19,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:28:19,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:28:17" (1/3) ... [2023-08-30 14:28:19,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6daf04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:28:19, skipping insertion in model container [2023-08-30 14:28:19,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:18" (2/3) ... [2023-08-30 14:28:19,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6daf04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:28:19, skipping insertion in model container [2023-08-30 14:28:19,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:28:19" (3/3) ... [2023-08-30 14:28:19,082 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-08-30 14:28:19,095 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:28:19,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:28:19,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 14:28:19,104 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:28:19,210 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:28:19,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 256 transitions, 534 flow [2023-08-30 14:28:19,397 INFO L130 PetriNetUnfolder]: 54/481 cut-off events. [2023-08-30 14:28:19,397 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-30 14:28:19,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 481 events. 54/481 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1986 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 14:28:19,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 256 transitions, 534 flow [2023-08-30 14:28:19,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 256 transitions, 534 flow [2023-08-30 14:28:19,422 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:28:19,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 256 transitions, 534 flow [2023-08-30 14:28:19,443 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 256 transitions, 534 flow [2023-08-30 14:28:19,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 256 transitions, 534 flow [2023-08-30 14:28:19,522 INFO L130 PetriNetUnfolder]: 54/481 cut-off events. [2023-08-30 14:28:19,523 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-30 14:28:19,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 481 events. 54/481 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1986 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 14:28:19,550 INFO L119 LiptonReduction]: Number of co-enabled transitions 20220 [2023-08-30 14:28:26,199 INFO L134 LiptonReduction]: Checked pairs total: 34161 [2023-08-30 14:28:26,200 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-30 14:28:26,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:28:26,218 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;@5264ad3e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:28:26,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 14:28:26,221 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 14:28:26,221 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:28:26,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:26,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:28:26,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:26,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash 31680, now seen corresponding path program 1 times [2023-08-30 14:28:26,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:26,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488758174] [2023-08-30 14:28:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:26,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:28:26,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:26,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488758174] [2023-08-30 14:28:26,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488758174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:28:26,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:28:26,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:28:26,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928802282] [2023-08-30 14:28:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:28:26,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 14:28:26,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:26,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 14:28:26,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 14:28:26,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 467 [2023-08-30 14:28:26,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 83 transitions, 188 flow. Second operand has 2 states, 2 states have (on average 233.0) internal successors, (466), 2 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:26,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:26,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 467 [2023-08-30 14:28:26,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:27,225 INFO L130 PetriNetUnfolder]: 3936/6887 cut-off events. [2023-08-30 14:28:27,225 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-30 14:28:27,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13190 conditions, 6887 events. 3936/6887 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 44757 event pairs, 3663 based on Foata normal form. 514/5604 useless extension candidates. Maximal degree in co-relation 11494. Up to 6207 conditions per place. [2023-08-30 14:28:27,265 INFO L137 encePairwiseOnDemand]: 455/467 looper letters, 59 selfloop transitions, 0 changer transitions 0/71 dead transitions. [2023-08-30 14:28:27,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 282 flow [2023-08-30 14:28:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 14:28:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 14:28:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 535 transitions. [2023-08-30 14:28:27,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728051391862955 [2023-08-30 14:28:27,284 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 535 transitions. [2023-08-30 14:28:27,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 535 transitions. [2023-08-30 14:28:27,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:27,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 535 transitions. [2023-08-30 14:28:27,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 267.5) internal successors, (535), 2 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:27,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 467.0) internal successors, (1401), 3 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:27,300 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 467.0) internal successors, (1401), 3 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:27,301 INFO L175 Difference]: Start difference. First operand has 70 places, 83 transitions, 188 flow. Second operand 2 states and 535 transitions. [2023-08-30 14:28:27,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 282 flow [2023-08-30 14:28:27,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:28:27,310 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 164 flow [2023-08-30 14:28:27,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-08-30 14:28:27,315 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 0 predicate places. [2023-08-30 14:28:27,316 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 164 flow [2023-08-30 14:28:27,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 233.0) internal successors, (466), 2 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:27,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:27,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:28:27,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:28:27,321 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:27,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:27,322 INFO L85 PathProgramCache]: Analyzing trace with hash 31679, now seen corresponding path program 1 times [2023-08-30 14:28:27,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:27,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230831770] [2023-08-30 14:28:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:27,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:28:27,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:27,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230831770] [2023-08-30 14:28:27,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230831770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:28:27,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:28:27,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:28:27,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151881841] [2023-08-30 14:28:27,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:28:27,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:28:27,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:27,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:28:27,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:28:27,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 467 [2023-08-30 14:28:27,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:27,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:27,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 467 [2023-08-30 14:28:27,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:28,273 INFO L130 PetriNetUnfolder]: 3936/6888 cut-off events. [2023-08-30 14:28:28,274 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-30 14:28:28,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13193 conditions, 6888 events. 3936/6888 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 44764 event pairs, 3663 based on Foata normal form. 0/5091 useless extension candidates. Maximal degree in co-relation 13188. Up to 6207 conditions per place. [2023-08-30 14:28:28,309 INFO L137 encePairwiseOnDemand]: 463/467 looper letters, 58 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-30 14:28:28,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 72 transitions, 286 flow [2023-08-30 14:28:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:28:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:28:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-08-30 14:28:28,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324768022840828 [2023-08-30 14:28:28,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-08-30 14:28:28,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-08-30 14:28:28,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:28,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-08-30 14:28:28,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:28,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:28,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:28,323 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 164 flow. Second operand 3 states and 746 transitions. [2023-08-30 14:28:28,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 72 transitions, 286 flow [2023-08-30 14:28:28,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:28:28,328 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 178 flow [2023-08-30 14:28:28,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2023-08-30 14:28:28,329 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2023-08-30 14:28:28,329 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 178 flow [2023-08-30 14:28:28,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:28,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:28,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:28:28,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:28:28,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:28,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash 982976, now seen corresponding path program 1 times [2023-08-30 14:28:28,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:28,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453517957] [2023-08-30 14:28:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:28,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:28:28,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:28,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453517957] [2023-08-30 14:28:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453517957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:28:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:28:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:28:28,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288931878] [2023-08-30 14:28:28,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:28:28,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:28:28,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:28,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:28:28,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:28:28,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 467 [2023-08-30 14:28:28,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:28,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:28,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 467 [2023-08-30 14:28:28,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:29,105 INFO L130 PetriNetUnfolder]: 3936/6887 cut-off events. [2023-08-30 14:28:29,106 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-30 14:28:29,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13198 conditions, 6887 events. 3936/6887 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 44775 event pairs, 3663 based on Foata normal form. 0/5091 useless extension candidates. Maximal degree in co-relation 13191. Up to 6206 conditions per place. [2023-08-30 14:28:29,170 INFO L137 encePairwiseOnDemand]: 465/467 looper letters, 58 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 14:28:29,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 292 flow [2023-08-30 14:28:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:28:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:28:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 743 transitions. [2023-08-30 14:28:29,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303354746609564 [2023-08-30 14:28:29,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 743 transitions. [2023-08-30 14:28:29,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 743 transitions. [2023-08-30 14:28:29,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:29,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 743 transitions. [2023-08-30 14:28:29,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:29,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:29,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:29,179 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 178 flow. Second operand 3 states and 743 transitions. [2023-08-30 14:28:29,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 292 flow [2023-08-30 14:28:29,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 288 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:28:29,182 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 172 flow [2023-08-30 14:28:29,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2023-08-30 14:28:29,184 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2023-08-30 14:28:29,185 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 172 flow [2023-08-30 14:28:29,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:29,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:29,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:28:29,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:28:29,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:29,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:29,186 INFO L85 PathProgramCache]: Analyzing trace with hash -781272287, now seen corresponding path program 1 times [2023-08-30 14:28:29,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:29,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007029884] [2023-08-30 14:28:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:29,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:28:29,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:29,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007029884] [2023-08-30 14:28:29,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007029884] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:29,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936304754] [2023-08-30 14:28:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:29,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:29,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:29,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:28:29,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:28:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:29,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:28:29,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:28:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:28:29,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:28:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:28:29,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936304754] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:28:29,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:28:29,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:28:29,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41382381] [2023-08-30 14:28:29,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:28:29,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:28:29,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:29,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:28:29,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:28:29,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 467 [2023-08-30 14:28:29,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:29,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:29,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 467 [2023-08-30 14:28:29,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:30,282 INFO L130 PetriNetUnfolder]: 3936/6890 cut-off events. [2023-08-30 14:28:30,282 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-30 14:28:30,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13206 conditions, 6890 events. 3936/6890 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 44741 event pairs, 3663 based on Foata normal form. 0/5094 useless extension candidates. Maximal degree in co-relation 13199. Up to 6206 conditions per place. [2023-08-30 14:28:30,314 INFO L137 encePairwiseOnDemand]: 464/467 looper letters, 57 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2023-08-30 14:28:30,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 308 flow [2023-08-30 14:28:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:28:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:28:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1427 transitions. [2023-08-30 14:28:30,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092790863668808 [2023-08-30 14:28:30,319 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1427 transitions. [2023-08-30 14:28:30,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1427 transitions. [2023-08-30 14:28:30,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:30,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1427 transitions. [2023-08-30 14:28:30,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.83333333333334) internal successors, (1427), 6 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:30,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:30,329 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:30,330 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 172 flow. Second operand 6 states and 1427 transitions. [2023-08-30 14:28:30,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 308 flow [2023-08-30 14:28:30,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:28:30,333 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 207 flow [2023-08-30 14:28:30,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=207, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2023-08-30 14:28:30,334 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2023-08-30 14:28:30,334 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 207 flow [2023-08-30 14:28:30,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:30,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:30,335 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 14:28:30,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:28:30,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:30,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:30,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:30,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1580995966, now seen corresponding path program 2 times [2023-08-30 14:28:30,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:30,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257156726] [2023-08-30 14:28:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:30,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:28:30,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:30,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257156726] [2023-08-30 14:28:30,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257156726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:28:30,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:28:30,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:28:30,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182536632] [2023-08-30 14:28:30,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:28:30,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:28:30,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:28:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:28:30,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 467 [2023-08-30 14:28:30,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:30,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:30,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 467 [2023-08-30 14:28:30,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:31,348 INFO L130 PetriNetUnfolder]: 3810/6626 cut-off events. [2023-08-30 14:28:31,348 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2023-08-30 14:28:31,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12710 conditions, 6626 events. 3810/6626 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 42117 event pairs, 3316 based on Foata normal form. 0/4985 useless extension candidates. Maximal degree in co-relation 12700. Up to 5956 conditions per place. [2023-08-30 14:28:31,389 INFO L137 encePairwiseOnDemand]: 462/467 looper letters, 66 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-30 14:28:31,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 355 flow [2023-08-30 14:28:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:28:31,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:28:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 751 transitions. [2023-08-30 14:28:31,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53604568165596 [2023-08-30 14:28:31,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 751 transitions. [2023-08-30 14:28:31,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 751 transitions. [2023-08-30 14:28:31,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:31,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 751 transitions. [2023-08-30 14:28:31,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:31,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:31,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:31,398 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 207 flow. Second operand 3 states and 751 transitions. [2023-08-30 14:28:31,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 355 flow [2023-08-30 14:28:31,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 80 transitions, 341 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:28:31,402 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 197 flow [2023-08-30 14:28:31,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2023-08-30 14:28:31,403 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2023-08-30 14:28:31,403 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 197 flow [2023-08-30 14:28:31,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:31,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:31,404 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 14:28:31,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:28:31,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:31,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:31,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1081326924, now seen corresponding path program 1 times [2023-08-30 14:28:31,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:31,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269684740] [2023-08-30 14:28:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:31,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:31,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269684740] [2023-08-30 14:28:31,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269684740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:31,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102988195] [2023-08-30 14:28:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:31,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:31,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:31,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:28:31,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:28:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:31,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:28:31,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:28:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:31,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:28:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:31,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102988195] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:28:31,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:28:31,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:28:31,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309335342] [2023-08-30 14:28:31,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:28:31,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:28:31,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:31,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:28:31,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:28:31,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 467 [2023-08-30 14:28:31,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 197 flow. Second operand has 13 states, 13 states have (on average 228.30769230769232) internal successors, (2968), 13 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:31,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:31,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 467 [2023-08-30 14:28:31,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:32,615 INFO L130 PetriNetUnfolder]: 3810/6633 cut-off events. [2023-08-30 14:28:32,616 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2023-08-30 14:28:32,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12754 conditions, 6633 events. 3810/6633 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 42120 event pairs, 3569 based on Foata normal form. 6/4994 useless extension candidates. Maximal degree in co-relation 12742. Up to 5962 conditions per place. [2023-08-30 14:28:32,647 INFO L137 encePairwiseOnDemand]: 464/467 looper letters, 55 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2023-08-30 14:28:32,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 78 transitions, 365 flow [2023-08-30 14:28:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:28:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:28:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2796 transitions. [2023-08-30 14:28:32,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989293361884368 [2023-08-30 14:28:32,655 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2796 transitions. [2023-08-30 14:28:32,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2796 transitions. [2023-08-30 14:28:32,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:32,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2796 transitions. [2023-08-30 14:28:32,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 233.0) internal successors, (2796), 12 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:32,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 467.0) internal successors, (6071), 13 states have internal predecessors, (6071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:32,672 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 467.0) internal successors, (6071), 13 states have internal predecessors, (6071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:32,672 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 197 flow. Second operand 12 states and 2796 transitions. [2023-08-30 14:28:32,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 78 transitions, 365 flow [2023-08-30 14:28:32,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 78 transitions, 361 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:28:32,676 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 277 flow [2023-08-30 14:28:32,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=277, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2023-08-30 14:28:32,677 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 25 predicate places. [2023-08-30 14:28:32,677 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 277 flow [2023-08-30 14:28:32,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 228.30769230769232) internal successors, (2968), 13 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:32,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:32,679 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:28:32,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:28:32,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 14:28:32,889 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:32,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:32,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1607581460, now seen corresponding path program 2 times [2023-08-30 14:28:32,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:32,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283614666] [2023-08-30 14:28:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:32,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:33,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:33,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283614666] [2023-08-30 14:28:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283614666] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:33,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93530212] [2023-08-30 14:28:33,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:28:33,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:33,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:33,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:28:33,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:28:33,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:28:33,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:28:33,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 14:28:33,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:28:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:33,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:28:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:33,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93530212] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:28:33,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:28:33,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 14:28:33,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719980950] [2023-08-30 14:28:33,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:28:33,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 14:28:33,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:33,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 14:28:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-30 14:28:33,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 467 [2023-08-30 14:28:33,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 277 flow. Second operand has 25 states, 25 states have (on average 228.16) internal successors, (5704), 25 states have internal predecessors, (5704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:33,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:33,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 467 [2023-08-30 14:28:33,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:34,938 INFO L130 PetriNetUnfolder]: 3810/6636 cut-off events. [2023-08-30 14:28:34,938 INFO L131 PetriNetUnfolder]: For 723/723 co-relation queries the response was YES. [2023-08-30 14:28:34,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12830 conditions, 6636 events. 3810/6636 cut-off events. For 723/723 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 42098 event pairs, 3569 based on Foata normal form. 12/5003 useless extension candidates. Maximal degree in co-relation 12812. Up to 5962 conditions per place. [2023-08-30 14:28:34,979 INFO L137 encePairwiseOnDemand]: 464/467 looper letters, 55 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2023-08-30 14:28:34,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 90 transitions, 529 flow [2023-08-30 14:28:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 14:28:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 14:28:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5538 transitions. [2023-08-30 14:28:34,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941113490364026 [2023-08-30 14:28:34,991 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5538 transitions. [2023-08-30 14:28:34,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5538 transitions. [2023-08-30 14:28:34,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:34,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5538 transitions. [2023-08-30 14:28:35,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 230.75) internal successors, (5538), 24 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:35,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 467.0) internal successors, (11675), 25 states have internal predecessors, (11675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:35,022 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 467.0) internal successors, (11675), 25 states have internal predecessors, (11675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:35,022 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 277 flow. Second operand 24 states and 5538 transitions. [2023-08-30 14:28:35,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 90 transitions, 529 flow [2023-08-30 14:28:35,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 90 transitions, 457 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-30 14:28:35,027 INFO L231 Difference]: Finished difference. Result has 125 places, 90 transitions, 397 flow [2023-08-30 14:28:35,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=397, PETRI_PLACES=125, PETRI_TRANSITIONS=90} [2023-08-30 14:28:35,028 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 55 predicate places. [2023-08-30 14:28:35,028 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 90 transitions, 397 flow [2023-08-30 14:28:35,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 228.16) internal successors, (5704), 25 states have internal predecessors, (5704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:35,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:35,030 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-30 14:28:35,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:28:35,237 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 14:28:35,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:35,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1670488108, now seen corresponding path program 3 times [2023-08-30 14:28:35,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:35,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313003594] [2023-08-30 14:28:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:35,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:36,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:36,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313003594] [2023-08-30 14:28:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313003594] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:36,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239435932] [2023-08-30 14:28:36,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:28:36,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:36,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:36,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:28:36,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Killed by 15