./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_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_74-tricky_address1_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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --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 14:20:32,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:20:32,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:20:32,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:20:32,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:20:32,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:20:32,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:20:32,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:20:32,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:20:32,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:20:32,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:20:32,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:20:32,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:20:32,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:20:32,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:20:32,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:20:32,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:20:32,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:20:32,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:20:32,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:20:32,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:20:32,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:20:32,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:20:32,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:20:32,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:20:32,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:20:32,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:20:32,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:20:32,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:20:32,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:20:32,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:20:32,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:20:32,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:20:32,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:20:32,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:20:32,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:20:32,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:20:32,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:20:32,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:20:32,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:20:32,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:20:32,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:20:32,781 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:20:32,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:20:32,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:20:32,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:20:32,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:20:32,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:20:32,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:20:32,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:20:32,784 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:20:32,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:20:32,784 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:20:32,785 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:20:32,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:20:32,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:20:32,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:20:32,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:20:32,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:20:32,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:20:32,785 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:20:32,786 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:20:32,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:20:32,786 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:20:32,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:20:32,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:20:32,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:20:32,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:20:32,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:20:32,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:20:32,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:20:32,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:20:32,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:20:32,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:20:32,787 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:20:32,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:20:32,788 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:20:32,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:20:32,788 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:20:32,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:20:33,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:20:33,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:20:33,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:20:33,046 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:20:33,047 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:20:33,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-08-30 14:20:34,024 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:20:34,245 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:20:34,253 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-08-30 14:20:34,268 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53e8fcc60/e684814801d04691adf2448fc23e4af2/FLAG01fa2dc6a [2023-08-30 14:20:34,279 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53e8fcc60/e684814801d04691adf2448fc23e4af2 [2023-08-30 14:20:34,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:20:34,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:20:34,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:20:34,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:20:34,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:20:34,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb8621a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34, skipping insertion in model container [2023-08-30 14:20:34,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:20:34,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:20:34,639 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_74-tricky_address1_racefree.i[41323,41336] [2023-08-30 14:20:34,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:20:34,677 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:20:34,705 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_74-tricky_address1_racefree.i[41323,41336] [2023-08-30 14:20:34,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:20:34,775 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:20:34,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34 WrapperNode [2023-08-30 14:20:34,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:20:34,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:20:34,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:20:34,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:20:34,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,829 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 204 [2023-08-30 14:20:34,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:20:34,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:20:34,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:20:34,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:20:34,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,867 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:20:34,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:20:34,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:20:34,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:20:34,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (1/1) ... [2023-08-30 14:20:34,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:20:34,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:20:34,920 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 14:20:34,940 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 14:20:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:20:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:20:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:20:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:20:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:20:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:20:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:20:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:20:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:20:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:20:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:20:34,950 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 14:20:35,035 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:20:35,036 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:20:35,308 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:20:35,314 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:20:35,314 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-30 14:20:35,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:20:35 BoogieIcfgContainer [2023-08-30 14:20:35,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:20:35,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:20:35,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:20:35,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:20:35,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:20:34" (1/3) ... [2023-08-30 14:20:35,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9d434a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:20:35, skipping insertion in model container [2023-08-30 14:20:35,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:34" (2/3) ... [2023-08-30 14:20:35,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9d434a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:20:35, skipping insertion in model container [2023-08-30 14:20:35,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:20:35" (3/3) ... [2023-08-30 14:20:35,333 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2023-08-30 14:20:35,338 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:20:35,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:20:35,349 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 14:20:35,349 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:20:35,420 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:20:35,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 216 transitions, 440 flow [2023-08-30 14:20:35,539 INFO L130 PetriNetUnfolder]: 45/293 cut-off events. [2023-08-30 14:20:35,539 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:20:35,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 293 events. 45/293 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 998 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-08-30 14:20:35,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 216 transitions, 440 flow [2023-08-30 14:20:35,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 213 transitions, 434 flow [2023-08-30 14:20:35,553 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:20:35,558 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 213 transitions, 434 flow [2023-08-30 14:20:35,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 213 transitions, 434 flow [2023-08-30 14:20:35,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 213 transitions, 434 flow [2023-08-30 14:20:35,596 INFO L130 PetriNetUnfolder]: 44/290 cut-off events. [2023-08-30 14:20:35,596 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:20:35,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 290 events. 44/290 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 988 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-08-30 14:20:35,602 INFO L119 LiptonReduction]: Number of co-enabled transitions 13050 [2023-08-30 14:20:38,006 INFO L134 LiptonReduction]: Checked pairs total: 22816 [2023-08-30 14:20:38,007 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 14:20:38,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:20:38,028 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;@6a3905b6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:20:38,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-30 14:20:38,029 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:20:38,030 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:20:38,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:38,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:20:38,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:20:38,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:38,036 INFO L85 PathProgramCache]: Analyzing trace with hash 27119, now seen corresponding path program 1 times [2023-08-30 14:20:38,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:38,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17881191] [2023-08-30 14:20:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:38,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:38,271 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 14:20:38,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:38,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17881191] [2023-08-30 14:20:38,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17881191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:38,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:38,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:20:38,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581045703] [2023-08-30 14:20:38,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:38,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:20:38,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:20:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:20:38,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 407 [2023-08-30 14:20:38,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 79 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 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 14:20:38,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:38,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 407 [2023-08-30 14:20:38,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:38,516 INFO L130 PetriNetUnfolder]: 454/971 cut-off events. [2023-08-30 14:20:38,517 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:20:38,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 971 events. 454/971 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5409 event pairs, 414 based on Foata normal form. 131/816 useless extension candidates. Maximal degree in co-relation 1806. Up to 898 conditions per place. [2023-08-30 14:20:38,522 INFO L137 encePairwiseOnDemand]: 380/407 looper letters, 48 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 14:20:38,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 222 flow [2023-08-30 14:20:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:20:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:20:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 14:20:38,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506961506961507 [2023-08-30 14:20:38,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 14:20:38,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 14:20:38,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:38,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 14:20:38,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 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 14:20:38,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 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 14:20:38,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 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 14:20:38,562 INFO L175 Difference]: Start difference. First operand has 58 places, 79 transitions, 166 flow. Second operand 3 states and 619 transitions. [2023-08-30 14:20:38,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 222 flow [2023-08-30 14:20:38,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:20:38,566 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 134 flow [2023-08-30 14:20:38,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-08-30 14:20:38,584 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-30 14:20:38,584 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 134 flow [2023-08-30 14:20:38,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 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 14:20:38,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:38,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:20:38,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:20:38,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:20:38,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:38,586 INFO L85 PathProgramCache]: Analyzing trace with hash 842574, now seen corresponding path program 1 times [2023-08-30 14:20:38,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:38,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270023102] [2023-08-30 14:20:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:38,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:38,651 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 14:20:38,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:38,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270023102] [2023-08-30 14:20:38,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270023102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:20:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803293518] [2023-08-30 14:20:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:38,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:20:38,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:20:38,656 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 14:20:38,669 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 14:20:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:38,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:20:38,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:20:38,799 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 14:20:38,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:20:38,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803293518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:38,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:20:38,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:20:38,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319450599] [2023-08-30 14:20:38,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:38,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:20:38,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:38,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:20:38,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:20:38,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 407 [2023-08-30 14:20:38,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 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 14:20:38,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:38,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 407 [2023-08-30 14:20:38,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:38,932 INFO L130 PetriNetUnfolder]: 454/970 cut-off events. [2023-08-30 14:20:38,933 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:20:38,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1882 conditions, 970 events. 454/970 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5406 event pairs, 414 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1870. Up to 896 conditions per place. [2023-08-30 14:20:38,937 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 47 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-30 14:20:38,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 228 flow [2023-08-30 14:20:38,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:20:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:20:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 774 transitions. [2023-08-30 14:20:38,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47542997542997545 [2023-08-30 14:20:38,940 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 774 transitions. [2023-08-30 14:20:38,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 774 transitions. [2023-08-30 14:20:38,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:38,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 774 transitions. [2023-08-30 14:20:38,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 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 14:20:38,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 0 states have call successors, (0), 0 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 14:20:38,945 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 0 states have call successors, (0), 0 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 14:20:38,946 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 134 flow. Second operand 4 states and 774 transitions. [2023-08-30 14:20:38,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 228 flow [2023-08-30 14:20:38,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 224 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:20:38,948 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 130 flow [2023-08-30 14:20:38,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 14:20:38,949 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-30 14:20:38,949 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 130 flow [2023-08-30 14:20:38,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 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 14:20:38,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:38,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:20:38,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:20:39,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:20:39,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:20:39,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:39,156 INFO L85 PathProgramCache]: Analyzing trace with hash -666401115, now seen corresponding path program 1 times [2023-08-30 14:20:39,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:39,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441432061] [2023-08-30 14:20:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:39,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:39,221 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 14:20:39,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:39,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441432061] [2023-08-30 14:20:39,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441432061] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:20:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537573277] [2023-08-30 14:20:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:39,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:20:39,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:20:39,225 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 14:20:39,227 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 14:20:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:39,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:20:39,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:20:39,301 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 14:20:39,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:20:39,311 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 14:20:39,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537573277] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:20:39,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:20:39,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:20:39,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699884650] [2023-08-30 14:20:39,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:20:39,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:20:39,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:39,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:20:39,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:20:39,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 407 [2023-08-30 14:20:39,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 0 states have call successors, (0), 0 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 14:20:39,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:39,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 407 [2023-08-30 14:20:39,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:39,464 INFO L130 PetriNetUnfolder]: 454/973 cut-off events. [2023-08-30 14:20:39,464 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:20:39,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1891 conditions, 973 events. 454/973 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5410 event pairs, 414 based on Foata normal form. 0/688 useless extension candidates. Maximal degree in co-relation 1879. Up to 897 conditions per place. [2023-08-30 14:20:39,468 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 47 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-08-30 14:20:39,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 246 flow [2023-08-30 14:20:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:20:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:20:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1135 transitions. [2023-08-30 14:20:39,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46478296478296477 [2023-08-30 14:20:39,470 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1135 transitions. [2023-08-30 14:20:39,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1135 transitions. [2023-08-30 14:20:39,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:39,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1135 transitions. [2023-08-30 14:20:39,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 14:20:39,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 0 states have call successors, (0), 0 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 14:20:39,476 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 0 states have call successors, (0), 0 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 14:20:39,476 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 130 flow. Second operand 6 states and 1135 transitions. [2023-08-30 14:20:39,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 246 flow [2023-08-30 14:20:39,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:20:39,478 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 163 flow [2023-08-30 14:20:39,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-30 14:20:39,479 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-08-30 14:20:39,479 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 163 flow [2023-08-30 14:20:39,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 0 states have call successors, (0), 0 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 14:20:39,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:39,480 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 14:20:39,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 14:20:39,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 14:20:39,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:20:39,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:39,686 INFO L85 PathProgramCache]: Analyzing trace with hash -708808540, now seen corresponding path program 2 times [2023-08-30 14:20:39,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:39,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501438890] [2023-08-30 14:20:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:39,742 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 14:20:39,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:39,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501438890] [2023-08-30 14:20:39,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501438890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:39,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:39,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:20:39,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587940750] [2023-08-30 14:20:39,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:39,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:20:39,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:39,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:20:39,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:20:39,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 407 [2023-08-30 14:20:39,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 14:20:39,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:39,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 407 [2023-08-30 14:20:39,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:39,858 INFO L130 PetriNetUnfolder]: 399/886 cut-off events. [2023-08-30 14:20:39,858 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:20:39,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1742 conditions, 886 events. 399/886 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5295 event pairs, 0 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1726. Up to 787 conditions per place. [2023-08-30 14:20:39,862 INFO L137 encePairwiseOnDemand]: 402/407 looper letters, 67 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 14:20:39,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 335 flow [2023-08-30 14:20:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:20:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:20:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 14:20:39,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004095004095004 [2023-08-30 14:20:39,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 14:20:39,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 14:20:39,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:39,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 14:20:39,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:39,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 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 14:20:39,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 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 14:20:39,868 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 163 flow. Second operand 3 states and 611 transitions. [2023-08-30 14:20:39,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 335 flow [2023-08-30 14:20:39,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 321 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:20:39,871 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 153 flow [2023-08-30 14:20:39,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-08-30 14:20:39,872 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-08-30 14:20:39,872 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 153 flow [2023-08-30 14:20:39,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 14:20:39,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:39,873 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 14:20:39,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:20:39,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:20:39,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:39,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1734819577, now seen corresponding path program 1 times [2023-08-30 14:20:39,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:39,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646379645] [2023-08-30 14:20:39,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:39,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:39,944 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 14:20:39,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646379645] [2023-08-30 14:20:39,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646379645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:20:39,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77936006] [2023-08-30 14:20:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:39,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:20:39,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:20:39,961 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 14:20:39,973 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 14:20:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:40,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:20:40,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:20:40,058 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 14:20:40,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:20:40,099 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 14:20:40,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77936006] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:20:40,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:20:40,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:20:40,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174541352] [2023-08-30 14:20:40,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:20:40,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:20:40,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:20:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:20:40,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 407 [2023-08-30 14:20:40,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 153 flow. Second operand has 13 states, 13 states have (on average 181.30769230769232) internal successors, (2357), 13 states have internal predecessors, (2357), 0 states have call successors, (0), 0 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 14:20:40,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:40,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 407 [2023-08-30 14:20:40,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:40,257 INFO L130 PetriNetUnfolder]: 418/876 cut-off events. [2023-08-30 14:20:40,258 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-30 14:20:40,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 876 events. 418/876 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4691 event pairs, 378 based on Foata normal form. 6/670 useless extension candidates. Maximal degree in co-relation 1769. Up to 804 conditions per place. [2023-08-30 14:20:40,261 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 45 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2023-08-30 14:20:40,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 301 flow [2023-08-30 14:20:40,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:20:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:20:40,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2222 transitions. [2023-08-30 14:20:40,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2023-08-30 14:20:40,266 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2222 transitions. [2023-08-30 14:20:40,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2222 transitions. [2023-08-30 14:20:40,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:40,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2222 transitions. [2023-08-30 14:20:40,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.16666666666666) internal successors, (2222), 12 states have internal predecessors, (2222), 0 states have call successors, (0), 0 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 14:20:40,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 407.0) internal successors, (5291), 13 states have internal predecessors, (5291), 0 states have call successors, (0), 0 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 14:20:40,277 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 407.0) internal successors, (5291), 13 states have internal predecessors, (5291), 0 states have call successors, (0), 0 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 14:20:40,277 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 153 flow. Second operand 12 states and 2222 transitions. [2023-08-30 14:20:40,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 301 flow [2023-08-30 14:20:40,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:20:40,280 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 233 flow [2023-08-30 14:20:40,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=233, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-08-30 14:20:40,280 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-08-30 14:20:40,281 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 233 flow [2023-08-30 14:20:40,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 181.30769230769232) internal successors, (2357), 13 states have internal predecessors, (2357), 0 states have call successors, (0), 0 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 14:20:40,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:40,282 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:20:40,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 14:20:40,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:20:40,487 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:20:40,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1608922969, now seen corresponding path program 2 times [2023-08-30 14:20:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:40,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248791029] [2023-08-30 14:20:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:40,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:20:40,522 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:20:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:20:40,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:20:40,551 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:20:40,552 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-30 14:20:40,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-30 14:20:40,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-30 14:20:40,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-30 14:20:40,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-30 14:20:40,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-30 14:20:40,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-30 14:20:40,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-30 14:20:40,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-30 14:20:40,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-30 14:20:40,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-30 14:20:40,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-30 14:20:40,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-30 14:20:40,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-30 14:20:40,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-30 14:20:40,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-30 14:20:40,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-30 14:20:40,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-30 14:20:40,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-30 14:20:40,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:20:40,560 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-30 14:20:40,562 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:20:40,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:20:40,594 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:20:40,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 293 transitions, 604 flow [2023-08-30 14:20:40,632 INFO L130 PetriNetUnfolder]: 75/483 cut-off events. [2023-08-30 14:20:40,633 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 14:20:40,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 483 events. 75/483 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2032 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 295. Up to 12 conditions per place. [2023-08-30 14:20:40,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 293 transitions, 604 flow [2023-08-30 14:20:40,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 293 transitions, 604 flow [2023-08-30 14:20:40,640 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:20:40,640 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 293 transitions, 604 flow [2023-08-30 14:20:40,640 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 293 transitions, 604 flow [2023-08-30 14:20:40,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 293 transitions, 604 flow [2023-08-30 14:20:40,694 INFO L130 PetriNetUnfolder]: 75/483 cut-off events. [2023-08-30 14:20:40,694 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 14:20:40,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 483 events. 75/483 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2032 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 295. Up to 12 conditions per place. [2023-08-30 14:20:40,711 INFO L119 LiptonReduction]: Number of co-enabled transitions 40200 [2023-08-30 14:20:43,704 INFO L134 LiptonReduction]: Checked pairs total: 71775 [2023-08-30 14:20:43,704 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-08-30 14:20:43,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:20:43,705 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;@6a3905b6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:20:43,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 14:20:43,706 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:20:43,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:20:43,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:43,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:20:43,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:20:43,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:43,707 INFO L85 PathProgramCache]: Analyzing trace with hash 47355, now seen corresponding path program 1 times [2023-08-30 14:20:43,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:43,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224864300] [2023-08-30 14:20:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:43,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:43,720 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 14:20:43,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:43,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224864300] [2023-08-30 14:20:43,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224864300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:43,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:43,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:20:43,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990283223] [2023-08-30 14:20:43,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:43,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:20:43,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:43,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:20:43,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:20:43,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-08-30 14:20:43,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 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 14:20:43,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:43,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-08-30 14:20:43,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:45,324 INFO L130 PetriNetUnfolder]: 18204/28759 cut-off events. [2023-08-30 14:20:45,325 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 14:20:45,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55584 conditions, 28759 events. 18204/28759 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 214971 event pairs, 17105 based on Foata normal form. 4139/24418 useless extension candidates. Maximal degree in co-relation 24620. Up to 26707 conditions per place. [2023-08-30 14:20:45,428 INFO L137 encePairwiseOnDemand]: 516/553 looper letters, 70 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 14:20:45,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 330 flow [2023-08-30 14:20:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:20:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:20:45,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 837 transitions. [2023-08-30 14:20:45,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045207956600362 [2023-08-30 14:20:45,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 837 transitions. [2023-08-30 14:20:45,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 837 transitions. [2023-08-30 14:20:45,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:45,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 837 transitions. [2023-08-30 14:20:45,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:45,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 14:20:45,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 14:20:45,434 INFO L175 Difference]: Start difference. First operand has 83 places, 116 transitions, 250 flow. Second operand 3 states and 837 transitions. [2023-08-30 14:20:45,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 330 flow [2023-08-30 14:20:45,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:20:45,438 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 198 flow [2023-08-30 14:20:45,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-08-30 14:20:45,439 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-08-30 14:20:45,439 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 198 flow [2023-08-30 14:20:45,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 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 14:20:45,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:45,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:20:45,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:20:45,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:20:45,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1470968, now seen corresponding path program 1 times [2023-08-30 14:20:45,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:45,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636044429] [2023-08-30 14:20:45,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:45,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:45,458 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 14:20:45,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:45,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636044429] [2023-08-30 14:20:45,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636044429] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:45,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:45,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:20:45,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45371325] [2023-08-30 14:20:45,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:45,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:20:45,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:45,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:20:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:20:45,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-08-30 14:20:45,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:45,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:45,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-08-30 14:20:45,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:47,059 INFO L130 PetriNetUnfolder]: 18204/28758 cut-off events. [2023-08-30 14:20:47,059 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 14:20:47,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55589 conditions, 28758 events. 18204/28758 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 215199 event pairs, 17105 based on Foata normal form. 0/20279 useless extension candidates. Maximal degree in co-relation 55576. Up to 26706 conditions per place. [2023-08-30 14:20:47,167 INFO L137 encePairwiseOnDemand]: 551/553 looper letters, 70 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2023-08-30 14:20:47,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 83 transitions, 336 flow [2023-08-30 14:20:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:20:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:20:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2023-08-30 14:20:47,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822182037371911 [2023-08-30 14:20:47,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2023-08-30 14:20:47,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2023-08-30 14:20:47,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:47,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2023-08-30 14:20:47,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 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 14:20:47,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 14:20:47,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 14:20:47,175 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 198 flow. Second operand 3 states and 800 transitions. [2023-08-30 14:20:47,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 83 transitions, 336 flow [2023-08-30 14:20:47,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:20:47,177 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 192 flow [2023-08-30 14:20:47,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2023-08-30 14:20:47,179 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-08-30 14:20:47,179 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 192 flow [2023-08-30 14:20:47,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:47,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:47,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:20:47,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:20:47,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:20:47,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:47,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1357543519, now seen corresponding path program 1 times [2023-08-30 14:20:47,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:47,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495810759] [2023-08-30 14:20:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:47,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:47,223 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 14:20:47,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:47,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495810759] [2023-08-30 14:20:47,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495810759] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:20:47,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475469427] [2023-08-30 14:20:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:47,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:20:47,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:20:47,225 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 14:20:47,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:20:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:47,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:20:47,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:20:47,288 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 14:20:47,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:20:47,299 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 14:20:47,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475469427] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:20:47,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:20:47,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:20:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086884811] [2023-08-30 14:20:47,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:20:47,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:20:47,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:20:47,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:20:47,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 553 [2023-08-30 14:20:47,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 243.57142857142858) internal successors, (1705), 7 states have internal predecessors, (1705), 0 states have call successors, (0), 0 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 14:20:47,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:47,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 553 [2023-08-30 14:20:47,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:48,870 INFO L130 PetriNetUnfolder]: 18204/28761 cut-off events. [2023-08-30 14:20:48,871 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 14:20:48,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55597 conditions, 28761 events. 18204/28761 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 214930 event pairs, 17105 based on Foata normal form. 0/20282 useless extension candidates. Maximal degree in co-relation 55587. Up to 26706 conditions per place. [2023-08-30 14:20:49,002 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 69 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-08-30 14:20:49,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 352 flow [2023-08-30 14:20:49,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:20:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:20:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1529 transitions. [2023-08-30 14:20:49,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46081977094635324 [2023-08-30 14:20:49,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1529 transitions. [2023-08-30 14:20:49,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1529 transitions. [2023-08-30 14:20:49,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:49,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1529 transitions. [2023-08-30 14:20:49,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 0 states have call successors, (0), 0 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 14:20:49,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 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 14:20:49,012 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 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 14:20:49,012 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 192 flow. Second operand 6 states and 1529 transitions. [2023-08-30 14:20:49,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 352 flow [2023-08-30 14:20:49,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:20:49,014 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 227 flow [2023-08-30 14:20:49,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-08-30 14:20:49,015 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2023-08-30 14:20:49,015 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 227 flow [2023-08-30 14:20:49,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 243.57142857142858) internal successors, (1705), 7 states have internal predecessors, (1705), 0 states have call successors, (0), 0 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 14:20:49,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:49,016 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:20:49,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 14:20:49,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:20:49,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:20:49,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:49,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1880441512, now seen corresponding path program 1 times [2023-08-30 14:20:49,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:49,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577990110] [2023-08-30 14:20:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:49,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:49,271 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 14:20:49,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:49,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577990110] [2023-08-30 14:20:49,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577990110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:49,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:49,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:20:49,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407994271] [2023-08-30 14:20:49,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:49,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:20:49,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:49,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:20:49,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:20:49,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-08-30 14:20:49,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 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 14:20:49,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:49,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-08-30 14:20:49,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:50,613 INFO L130 PetriNetUnfolder]: 17908/28425 cut-off events. [2023-08-30 14:20:50,613 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-30 14:20:50,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55205 conditions, 28425 events. 17908/28425 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 216087 event pairs, 8177 based on Foata normal form. 0/20011 useless extension candidates. Maximal degree in co-relation 55191. Up to 26596 conditions per place. [2023-08-30 14:20:50,715 INFO L137 encePairwiseOnDemand]: 548/553 looper letters, 92 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 14:20:50,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 455 flow [2023-08-30 14:20:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:20:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:20:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-08-30 14:20:50,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49547920433996384 [2023-08-30 14:20:50,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-08-30 14:20:50,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-08-30 14:20:50,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:50,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-08-30 14:20:50,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 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 14:20:50,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 14:20:50,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 14:20:50,722 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 227 flow. Second operand 3 states and 822 transitions. [2023-08-30 14:20:50,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 455 flow [2023-08-30 14:20:50,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 441 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:20:50,723 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 229 flow [2023-08-30 14:20:50,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-08-30 14:20:50,724 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2023-08-30 14:20:50,724 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 229 flow [2023-08-30 14:20:50,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 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 14:20:50,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:50,725 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:20:50,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:20:50,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:20:50,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash -546114119, now seen corresponding path program 1 times [2023-08-30 14:20:50,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:50,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917029200] [2023-08-30 14:20:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:50,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:20:50,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:50,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917029200] [2023-08-30 14:20:50,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917029200] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:20:50,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580439276] [2023-08-30 14:20:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:50,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:20:50,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:20:50,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:20:50,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:20:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:50,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:20:50,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:20:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:20:50,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:20:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:20:50,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580439276] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:20:50,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:20:50,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:20:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7663828] [2023-08-30 14:20:50,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:20:50,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:20:50,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:50,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:20:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:20:50,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 553 [2023-08-30 14:20:50,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 243.46153846153845) internal successors, (3165), 13 states have internal predecessors, (3165), 0 states have call successors, (0), 0 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 14:20:50,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:50,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 553 [2023-08-30 14:20:50,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:52,666 INFO L130 PetriNetUnfolder]: 18313/28500 cut-off events. [2023-08-30 14:20:52,666 INFO L131 PetriNetUnfolder]: For 911/911 co-relation queries the response was YES. [2023-08-30 14:20:52,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56697 conditions, 28500 events. 18313/28500 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 210278 event pairs, 17069 based on Foata normal form. 6/20409 useless extension candidates. Maximal degree in co-relation 56682. Up to 26613 conditions per place. [2023-08-30 14:20:52,844 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 70 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-08-30 14:20:52,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 427 flow [2023-08-30 14:20:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:20:52,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:20:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2990 transitions. [2023-08-30 14:20:52,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45057263411693793 [2023-08-30 14:20:52,862 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2990 transitions. [2023-08-30 14:20:52,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2990 transitions. [2023-08-30 14:20:52,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:52,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2990 transitions. [2023-08-30 14:20:52,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 249.16666666666666) internal successors, (2990), 12 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:52,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 553.0) internal successors, (7189), 13 states have internal predecessors, (7189), 0 states have call successors, (0), 0 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 14:20:52,889 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 553.0) internal successors, (7189), 13 states have internal predecessors, (7189), 0 states have call successors, (0), 0 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 14:20:52,889 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 229 flow. Second operand 12 states and 2990 transitions. [2023-08-30 14:20:52,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 427 flow [2023-08-30 14:20:52,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:20:52,893 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 311 flow [2023-08-30 14:20:52,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=311, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2023-08-30 14:20:52,893 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 27 predicate places. [2023-08-30 14:20:52,894 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 311 flow [2023-08-30 14:20:52,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.46153846153845) internal successors, (3165), 13 states have internal predecessors, (3165), 0 states have call successors, (0), 0 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 14:20:52,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:52,895 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:20:52,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:20:53,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 14:20:53,100 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:20:53,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:53,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2004040999, now seen corresponding path program 2 times [2023-08-30 14:20:53,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:53,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101827961] [2023-08-30 14:20:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:53,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:20:53,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:53,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101827961] [2023-08-30 14:20:53,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101827961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:53,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:53,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:20:53,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205963859] [2023-08-30 14:20:53,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:53,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:20:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:20:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:20:53,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 553 [2023-08-30 14:20:53,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 234.33333333333334) internal successors, (1406), 6 states have internal predecessors, (1406), 0 states have call successors, (0), 0 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 14:20:53,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:53,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 553 [2023-08-30 14:20:53,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:55,802 INFO L130 PetriNetUnfolder]: 23410/37603 cut-off events. [2023-08-30 14:20:55,802 INFO L131 PetriNetUnfolder]: For 1278/1278 co-relation queries the response was YES. [2023-08-30 14:20:55,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75451 conditions, 37603 events. 23410/37603 cut-off events. For 1278/1278 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 305712 event pairs, 6624 based on Foata normal form. 0/27814 useless extension candidates. Maximal degree in co-relation 75429. Up to 22891 conditions per place. [2023-08-30 14:20:55,960 INFO L137 encePairwiseOnDemand]: 538/553 looper letters, 233 selfloop transitions, 25 changer transitions 0/270 dead transitions. [2023-08-30 14:20:55,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 270 transitions, 1237 flow [2023-08-30 14:20:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:20:55,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:20:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1884 transitions. [2023-08-30 14:20:55,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48669594420046497 [2023-08-30 14:20:55,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1884 transitions. [2023-08-30 14:20:55,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1884 transitions. [2023-08-30 14:20:55,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:55,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1884 transitions. [2023-08-30 14:20:55,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 269.14285714285717) internal successors, (1884), 7 states have internal predecessors, (1884), 0 states have call successors, (0), 0 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 14:20:55,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 553.0) internal successors, (4424), 8 states have internal predecessors, (4424), 0 states have call successors, (0), 0 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 14:20:55,972 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 553.0) internal successors, (4424), 8 states have internal predecessors, (4424), 0 states have call successors, (0), 0 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 14:20:55,972 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 311 flow. Second operand 7 states and 1884 transitions. [2023-08-30 14:20:55,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 270 transitions, 1237 flow [2023-08-30 14:20:55,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 270 transitions, 1189 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:20:55,977 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 427 flow [2023-08-30 14:20:55,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2023-08-30 14:20:55,978 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2023-08-30 14:20:55,978 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 427 flow [2023-08-30 14:20:55,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 234.33333333333334) internal successors, (1406), 6 states have internal predecessors, (1406), 0 states have call successors, (0), 0 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 14:20:55,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:55,978 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:20:55,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:20:55,979 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:20:55,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:55,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1985133833, now seen corresponding path program 1 times [2023-08-30 14:20:55,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:55,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259152631] [2023-08-30 14:20:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:55,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 14:20:56,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:56,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259152631] [2023-08-30 14:20:56,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259152631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:56,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:56,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:20:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885478415] [2023-08-30 14:20:56,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:56,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:20:56,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:56,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:20:56,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:20:56,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 553 [2023-08-30 14:20:56,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 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 14:20:56,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:56,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 553 [2023-08-30 14:20:56,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:58,361 INFO L130 PetriNetUnfolder]: 22450/35819 cut-off events. [2023-08-30 14:20:58,362 INFO L131 PetriNetUnfolder]: For 7524/7524 co-relation queries the response was YES. [2023-08-30 14:20:58,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82793 conditions, 35819 events. 22450/35819 cut-off events. For 7524/7524 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 293697 event pairs, 3463 based on Foata normal form. 0/28245 useless extension candidates. Maximal degree in co-relation 82767. Up to 30602 conditions per place. [2023-08-30 14:20:58,523 INFO L137 encePairwiseOnDemand]: 549/553 looper letters, 142 selfloop transitions, 6 changer transitions 0/160 dead transitions. [2023-08-30 14:20:58,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 160 transitions, 855 flow [2023-08-30 14:20:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:20:58,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:20:58,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2023-08-30 14:20:58,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015069318866787 [2023-08-30 14:20:58,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2023-08-30 14:20:58,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2023-08-30 14:20:58,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:58,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2023-08-30 14:20:58,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 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 14:20:58,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 14:20:58,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 14:20:58,529 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 427 flow. Second operand 3 states and 832 transitions. [2023-08-30 14:20:58,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 160 transitions, 855 flow [2023-08-30 14:20:58,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 160 transitions, 855 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:20:58,549 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 449 flow [2023-08-30 14:20:58,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2023-08-30 14:20:58,549 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 34 predicate places. [2023-08-30 14:20:58,549 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 449 flow [2023-08-30 14:20:58,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 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 14:20:58,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:58,550 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:20:58,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:20:58,550 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:20:58,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1985133779, now seen corresponding path program 1 times [2023-08-30 14:20:58,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:58,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22788361] [2023-08-30 14:20:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:58,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:20:58,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:58,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22788361] [2023-08-30 14:20:58,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22788361] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:58,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:58,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:20:58,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208958381] [2023-08-30 14:20:58,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:58,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:20:58,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:58,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:20:58,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:20:58,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-08-30 14:20:58,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 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 14:20:58,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:58,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-08-30 14:20:58,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:00,897 INFO L130 PetriNetUnfolder]: 21606/34701 cut-off events. [2023-08-30 14:21:00,898 INFO L131 PetriNetUnfolder]: For 13821/13823 co-relation queries the response was YES. [2023-08-30 14:21:01,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80835 conditions, 34701 events. 21606/34701 cut-off events. For 13821/13823 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 274278 event pairs, 18938 based on Foata normal form. 474/28176 useless extension candidates. Maximal degree in co-relation 80808. Up to 32817 conditions per place. [2023-08-30 14:21:01,277 INFO L137 encePairwiseOnDemand]: 551/553 looper letters, 103 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2023-08-30 14:21:01,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 116 transitions, 653 flow [2023-08-30 14:21:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2023-08-30 14:21:01,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810126582278481 [2023-08-30 14:21:01,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 798 transitions. [2023-08-30 14:21:01,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 798 transitions. [2023-08-30 14:21:01,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:01,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 798 transitions. [2023-08-30 14:21:01,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 0 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 14:21:01,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 14:21:01,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 14:21:01,303 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 449 flow. Second operand 3 states and 798 transitions. [2023-08-30 14:21:01,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 116 transitions, 653 flow [2023-08-30 14:21:01,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 116 transitions, 647 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:01,345 INFO L231 Difference]: Finished difference. Result has 117 places, 116 transitions, 441 flow [2023-08-30 14:21:01,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=441, PETRI_PLACES=117, PETRI_TRANSITIONS=116} [2023-08-30 14:21:01,347 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 34 predicate places. [2023-08-30 14:21:01,347 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 116 transitions, 441 flow [2023-08-30 14:21:01,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 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 14:21:01,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:01,348 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:01,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:21:01,348 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:01,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:01,348 INFO L85 PathProgramCache]: Analyzing trace with hash -976717523, now seen corresponding path program 1 times [2023-08-30 14:21:01,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008579445] [2023-08-30 14:21:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:01,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:01,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008579445] [2023-08-30 14:21:01,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008579445] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:01,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588081553] [2023-08-30 14:21:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:01,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:01,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:21:01,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:21:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:01,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 14:21:01,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:01,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 14:21:01,692 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:21:01,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:21:01,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 14:21:01,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 14:21:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:01,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:01,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588081553] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:01,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:01,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 14:21:01,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227435441] [2023-08-30 14:21:01,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:01,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:21:01,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:21:01,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=115, Unknown=6, NotChecked=0, Total=156 [2023-08-30 14:21:02,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 553 [2023-08-30 14:21:02,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 116 transitions, 441 flow. Second operand has 13 states, 13 states have (on average 207.15384615384616) internal successors, (2693), 13 states have internal predecessors, (2693), 0 states have call successors, (0), 0 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 14:21:02,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:02,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 553 [2023-08-30 14:21:02,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:04,966 INFO L130 PetriNetUnfolder]: 20944/33761 cut-off events. [2023-08-30 14:21:04,966 INFO L131 PetriNetUnfolder]: For 11666/11732 co-relation queries the response was YES. [2023-08-30 14:21:05,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77619 conditions, 33761 events. 20944/33761 cut-off events. For 11666/11732 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 269290 event pairs, 5980 based on Foata normal form. 207/27309 useless extension candidates. Maximal degree in co-relation 77591. Up to 21381 conditions per place. [2023-08-30 14:21:05,156 INFO L137 encePairwiseOnDemand]: 540/553 looper letters, 213 selfloop transitions, 26 changer transitions 0/251 dead transitions. [2023-08-30 14:21:05,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 251 transitions, 1275 flow [2023-08-30 14:21:05,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:21:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:21:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1655 transitions. [2023-08-30 14:21:05,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275381038491346 [2023-08-30 14:21:05,160 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1655 transitions. [2023-08-30 14:21:05,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1655 transitions. [2023-08-30 14:21:05,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:05,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1655 transitions. [2023-08-30 14:21:05,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 236.42857142857142) internal successors, (1655), 7 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 553.0) internal successors, (4424), 8 states have internal predecessors, (4424), 0 states have call successors, (0), 0 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 14:21:05,167 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 553.0) internal successors, (4424), 8 states have internal predecessors, (4424), 0 states have call successors, (0), 0 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 14:21:05,167 INFO L175 Difference]: Start difference. First operand has 117 places, 116 transitions, 441 flow. Second operand 7 states and 1655 transitions. [2023-08-30 14:21:05,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 251 transitions, 1275 flow [2023-08-30 14:21:05,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 251 transitions, 1274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:05,258 INFO L231 Difference]: Finished difference. Result has 124 places, 120 transitions, 535 flow [2023-08-30 14:21:05,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=535, PETRI_PLACES=124, PETRI_TRANSITIONS=120} [2023-08-30 14:21:05,259 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 41 predicate places. [2023-08-30 14:21:05,259 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 120 transitions, 535 flow [2023-08-30 14:21:05,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 207.15384615384616) internal successors, (2693), 13 states have internal predecessors, (2693), 0 states have call successors, (0), 0 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 14:21:05,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:05,260 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:05,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 14:21:05,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 14:21:05,465 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:05,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash 748222884, now seen corresponding path program 1 times [2023-08-30 14:21:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:05,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725927206] [2023-08-30 14:21:05,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:05,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:05,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:21:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:05,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:21:05,503 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:21:05,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-08-30 14:21:05,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-30 14:21:05,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-30 14:21:05,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-30 14:21:05,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-30 14:21:05,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-30 14:21:05,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-30 14:21:05,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-30 14:21:05,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-30 14:21:05,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-30 14:21:05,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-30 14:21:05,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-30 14:21:05,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-30 14:21:05,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-30 14:21:05,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-30 14:21:05,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-30 14:21:05,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-30 14:21:05,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-30 14:21:05,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-08-30 14:21:05,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-30 14:21:05,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-30 14:21:05,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-30 14:21:05,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-30 14:21:05,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:21:05,506 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:05,507 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:21:05,507 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:21:05,548 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:21:05,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:05,626 INFO L130 PetriNetUnfolder]: 110/712 cut-off events. [2023-08-30 14:21:05,626 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-30 14:21:05,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 712 events. 110/712 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3261 event pairs, 1 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 491. Up to 16 conditions per place. [2023-08-30 14:21:05,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:05,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:05,640 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:21:05,640 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:05,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:05,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:05,715 INFO L130 PetriNetUnfolder]: 110/712 cut-off events. [2023-08-30 14:21:05,716 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-30 14:21:05,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 712 events. 110/712 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3261 event pairs, 1 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 491. Up to 16 conditions per place. [2023-08-30 14:21:05,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 77850 [2023-08-30 14:21:09,386 INFO L134 LiptonReduction]: Checked pairs total: 141351 [2023-08-30 14:21:09,386 INFO L136 LiptonReduction]: Total number of compositions: 316 [2023-08-30 14:21:09,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:21:09,388 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;@6a3905b6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:21:09,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-30 14:21:09,389 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:21:09,389 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:21:09,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:09,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:21:09,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:21:09,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:09,389 INFO L85 PathProgramCache]: Analyzing trace with hash 71763, now seen corresponding path program 1 times [2023-08-30 14:21:09,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:09,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477576553] [2023-08-30 14:21:09,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:09,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:09,402 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 14:21:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:09,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477576553] [2023-08-30 14:21:09,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477576553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:09,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:09,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:21:09,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019763120] [2023-08-30 14:21:09,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:09,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:09,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:09,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:09,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:09,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 686 [2023-08-30 14:21:09,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 149 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 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 14:21:09,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:09,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 686 [2023-08-30 14:21:09,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:50,595 INFO L130 PetriNetUnfolder]: 574142/783225 cut-off events. [2023-08-30 14:21:50,595 INFO L131 PetriNetUnfolder]: For 5109/5109 co-relation queries the response was YES. [2023-08-30 14:21:51,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544044 conditions, 783225 events. 574142/783225 cut-off events. For 5109/5109 co-relation queries the response was YES. Maximal size of possible extension queue 19823. Compared 6246302 event pairs, 554452 based on Foata normal form. 98874/655857 useless extension candidates. Maximal degree in co-relation 329878. Up to 757863 conditions per place. [2023-08-30 14:21:54,505 INFO L137 encePairwiseOnDemand]: 639/686 looper letters, 92 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-30 14:21:54,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 107 transitions, 432 flow [2023-08-30 14:21:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1055 transitions. [2023-08-30 14:21:54,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126336248785228 [2023-08-30 14:21:54,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1055 transitions. [2023-08-30 14:21:54,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1055 transitions. [2023-08-30 14:21:54,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:54,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1055 transitions. [2023-08-30 14:21:54,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 14:21:54,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 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 14:21:54,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 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 14:21:54,512 INFO L175 Difference]: Start difference. First operand has 106 places, 149 transitions, 328 flow. Second operand 3 states and 1055 transitions. [2023-08-30 14:21:54,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 107 transitions, 432 flow [2023-08-30 14:21:54,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 107 transitions, 432 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:21:54,515 INFO L231 Difference]: Finished difference. Result has 108 places, 107 transitions, 256 flow [2023-08-30 14:21:54,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=108, PETRI_TRANSITIONS=107} [2023-08-30 14:21:54,515 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 2 predicate places. [2023-08-30 14:21:54,515 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 107 transitions, 256 flow [2023-08-30 14:21:54,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 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 14:21:54,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:54,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:21:54,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:21:54,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:21:54,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2229425, now seen corresponding path program 1 times [2023-08-30 14:21:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:54,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865901733] [2023-08-30 14:21:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:54,714 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 14:21:54,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:54,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865901733] [2023-08-30 14:21:54,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865901733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:54,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143588980] [2023-08-30 14:21:54,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:54,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:54,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:54,726 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:21:54,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:21:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:54,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:21:54,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:54,808 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 14:21:54,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:21:54,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143588980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:54,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:21:54,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:21:54,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4293524] [2023-08-30 14:21:54,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:54,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:21:54,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:21:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:21:54,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 686 [2023-08-30 14:21:54,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 107 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 305.75) internal successors, (1223), 4 states have internal predecessors, (1223), 0 states have call successors, (0), 0 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 14:21:54,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:54,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 686 [2023-08-30 14:21:54,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:34,968 INFO L130 PetriNetUnfolder]: 574142/783224 cut-off events. [2023-08-30 14:22:34,969 INFO L131 PetriNetUnfolder]: For 5109/5109 co-relation queries the response was YES. [2023-08-30 14:22:36,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544049 conditions, 783224 events. 574142/783224 cut-off events. For 5109/5109 co-relation queries the response was YES. Maximal size of possible extension queue 19823. Compared 6245820 event pairs, 554452 based on Foata normal form. 0/556983 useless extension candidates. Maximal degree in co-relation 1544035. Up to 757861 conditions per place. [2023-08-30 14:22:39,004 INFO L137 encePairwiseOnDemand]: 683/686 looper letters, 91 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 14:22:39,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 106 transitions, 438 flow [2023-08-30 14:22:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:22:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:22:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1314 transitions. [2023-08-30 14:22:39,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47886297376093295 [2023-08-30 14:22:39,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1314 transitions. [2023-08-30 14:22:39,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1314 transitions. [2023-08-30 14:22:39,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:39,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1314 transitions. [2023-08-30 14:22:39,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 328.5) internal successors, (1314), 4 states have internal predecessors, (1314), 0 states have call successors, (0), 0 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 14:22:39,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 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 14:22:39,016 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 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 14:22:39,016 INFO L175 Difference]: Start difference. First operand has 108 places, 107 transitions, 256 flow. Second operand 4 states and 1314 transitions. [2023-08-30 14:22:39,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 106 transitions, 438 flow [2023-08-30 14:22:39,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 106 transitions, 434 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:22:39,019 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 252 flow [2023-08-30 14:22:39,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2023-08-30 14:22:39,025 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 3 predicate places. [2023-08-30 14:22:39,025 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 252 flow [2023-08-30 14:22:39,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.75) internal successors, (1223), 4 states have internal predecessors, (1223), 0 states have call successors, (0), 0 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 14:22:39,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:39,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:22:39,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 14:22:39,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:22:39,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:22:39,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1786588906, now seen corresponding path program 1 times [2023-08-30 14:22:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:39,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746571415] [2023-08-30 14:22:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:39,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:39,262 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 14:22:39,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:39,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746571415] [2023-08-30 14:22:39,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746571415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:22:39,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810424892] [2023-08-30 14:22:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:39,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:22:39,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:22:39,264 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:22:39,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:22:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:39,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:22:39,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:22:39,341 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 14:22:39,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:22:39,349 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 14:22:39,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810424892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:22:39,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:22:39,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:22:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513422101] [2023-08-30 14:22:39,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:22:39,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:22:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:39,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:22:39,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:22:39,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 686 [2023-08-30 14:22:39,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 305.57142857142856) internal successors, (2139), 7 states have internal predecessors, (2139), 0 states have call successors, (0), 0 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 14:22:39,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:39,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 686 [2023-08-30 14:22:39,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand