./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym.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/pthread-ext/09_fmaxsym.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 0bf02669c3dd381b0745ab8dce392518dfe698af15c4a94bd383f1dab20a8c06 --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 12:48:54,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:48:54,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:48:54,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:48:54,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:48:54,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:48:54,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:48:54,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:48:54,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:48:54,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:48:54,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:48:54,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:48:54,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:48:54,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:48:54,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:48:54,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:48:54,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:48:54,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:48:54,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:48:54,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:48:54,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:48:54,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:48:54,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:48:54,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:48:54,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:48:54,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:48:54,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:48:54,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:48:54,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:48:54,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:48:54,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:48:54,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:48:54,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:48:54,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:48:54,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:48:54,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:48:54,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:48:54,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:48:54,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:48:54,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:48:54,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:48:54,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:48:54,519 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:48:54,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:48:54,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:48:54,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:48:54,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:48:54,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:48:54,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:48:54,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:48:54,522 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:48:54,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:48:54,523 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:48:54,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:48:54,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:48:54,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:48:54,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:48:54,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:48:54,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:48:54,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:48:54,525 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:48:54,525 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:48:54,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:48:54,525 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:48:54,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:48:54,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:48:54,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:48:54,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:48:54,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:48:54,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:48:54,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:48:54,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:48:54,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:48:54,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:48:54,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:48:54,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:48:54,527 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:48:54,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:48:54,528 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:48:54,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf02669c3dd381b0745ab8dce392518dfe698af15c4a94bd383f1dab20a8c06 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:48:54,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:48:54,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:48:54,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:48:54,851 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:48:54,851 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:48:54,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym.i [2023-08-30 12:48:55,897 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:48:56,111 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:48:56,112 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i [2023-08-30 12:48:56,124 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1e9a8615/a0cc475f00b04a7cb71350b7a2e167bb/FLAGa3e225108 [2023-08-30 12:48:56,143 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1e9a8615/a0cc475f00b04a7cb71350b7a2e167bb [2023-08-30 12:48:56,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:48:56,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:48:56,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:48:56,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:48:56,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:48:56,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4904767b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56, skipping insertion in model container [2023-08-30 12:48:56,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:48:56,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:48:56,514 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i[30422,30435] [2023-08-30 12:48:56,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:48:56,533 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:48:56,591 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i[30422,30435] [2023-08-30 12:48:56,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:48:56,632 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:48:56,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56 WrapperNode [2023-08-30 12:48:56,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:48:56,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:48:56,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:48:56,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:48:56,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,687 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2023-08-30 12:48:56,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:48:56,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:48:56,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:48:56,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:48:56,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:48:56,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:48:56,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:48:56,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:48:56,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (1/1) ... [2023-08-30 12:48:56,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:48:56,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:56,751 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 12:48:56,775 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 12:48:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:48:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 12:48:56,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 12:48:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:48:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:48:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:48:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:48:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:48:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:48:56,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:48:56,790 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 12:48:56,892 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:48:56,895 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:48:57,153 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:48:57,176 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:48:57,176 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:48:57,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:48:57 BoogieIcfgContainer [2023-08-30 12:48:57,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:48:57,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:48:57,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:48:57,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:48:57,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:48:56" (1/3) ... [2023-08-30 12:48:57,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ffb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:48:57, skipping insertion in model container [2023-08-30 12:48:57,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:56" (2/3) ... [2023-08-30 12:48:57,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ffb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:48:57, skipping insertion in model container [2023-08-30 12:48:57,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:48:57" (3/3) ... [2023-08-30 12:48:57,185 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2023-08-30 12:48:57,192 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:48:57,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:48:57,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 12:48:57,200 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:48:57,247 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:48:57,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 79 transitions, 163 flow [2023-08-30 12:48:57,335 INFO L130 PetriNetUnfolder]: 7/89 cut-off events. [2023-08-30 12:48:57,335 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:48:57,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 7/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2023-08-30 12:48:57,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 79 transitions, 163 flow [2023-08-30 12:48:57,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 79 transitions, 163 flow [2023-08-30 12:48:57,348 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:48:57,360 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 79 transitions, 163 flow [2023-08-30 12:48:57,366 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 79 transitions, 163 flow [2023-08-30 12:48:57,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 79 transitions, 163 flow [2023-08-30 12:48:57,395 INFO L130 PetriNetUnfolder]: 7/89 cut-off events. [2023-08-30 12:48:57,395 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:48:57,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 7/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2023-08-30 12:48:57,399 INFO L119 LiptonReduction]: Number of co-enabled transitions 1170 [2023-08-30 12:49:00,756 INFO L134 LiptonReduction]: Checked pairs total: 1289 [2023-08-30 12:49:00,756 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-30 12:49:00,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:49:00,773 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;@4ee79391, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:49:00,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 12:49:00,776 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-30 12:49:00,776 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:49:00,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:00,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:49:00,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 12:49:00,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:00,782 INFO L85 PathProgramCache]: Analyzing trace with hash 365808118, now seen corresponding path program 1 times [2023-08-30 12:49:00,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:00,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415745927] [2023-08-30 12:49:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:00,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:01,093 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 12:49:01,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:01,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415745927] [2023-08-30 12:49:01,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415745927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:01,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:01,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:01,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125302419] [2023-08-30 12:49:01,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:01,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:01,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:01,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:01,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:01,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 12:49:01,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 12:49:01,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:01,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 12:49:01,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:01,175 INFO L130 PetriNetUnfolder]: 11/29 cut-off events. [2023-08-30 12:49:01,175 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:49:01,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 29 events. 11/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 57 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 50. Up to 23 conditions per place. [2023-08-30 12:49:01,177 INFO L137 encePairwiseOnDemand]: 162/166 looper letters, 10 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2023-08-30 12:49:01,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 12 transitions, 51 flow [2023-08-30 12:49:01,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2023-08-30 12:49:01,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42771084337349397 [2023-08-30 12:49:01,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2023-08-30 12:49:01,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2023-08-30 12:49:01,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:01,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2023-08-30 12:49:01,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 12:49:01,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 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 12:49:01,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 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 12:49:01,219 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 31 flow. Second operand 3 states and 213 transitions. [2023-08-30 12:49:01,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 12 transitions, 51 flow [2023-08-30 12:49:01,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 51 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:49:01,222 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 27 flow [2023-08-30 12:49:01,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2023-08-30 12:49:01,226 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2023-08-30 12:49:01,226 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 27 flow [2023-08-30 12:49:01,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 12:49:01,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:01,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:49:01,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:49:01,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 12:49:01,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash 365808172, now seen corresponding path program 1 times [2023-08-30 12:49:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:01,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502316308] [2023-08-30 12:49:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:01,363 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 12:49:01,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:01,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502316308] [2023-08-30 12:49:01,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502316308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:01,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:01,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810956819] [2023-08-30 12:49:01,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:01,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:01,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:01,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 12:49:01,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 12:49:01,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:01,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 12:49:01,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:01,413 INFO L130 PetriNetUnfolder]: 9/24 cut-off events. [2023-08-30 12:49:01,414 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:49:01,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 24 events. 9/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 38 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 43. Up to 18 conditions per place. [2023-08-30 12:49:01,415 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-08-30 12:49:01,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 11 transitions, 49 flow [2023-08-30 12:49:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:01,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-08-30 12:49:01,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41967871485943775 [2023-08-30 12:49:01,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-08-30 12:49:01,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-08-30 12:49:01,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:01,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-08-30 12:49:01,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 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 12:49:01,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 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 12:49:01,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 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 12:49:01,428 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 27 flow. Second operand 3 states and 209 transitions. [2023-08-30 12:49:01,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 11 transitions, 49 flow [2023-08-30 12:49:01,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:01,429 INFO L231 Difference]: Finished difference. Result has 14 places, 9 transitions, 26 flow [2023-08-30 12:49:01,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=14, PETRI_TRANSITIONS=9} [2023-08-30 12:49:01,432 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2023-08-30 12:49:01,432 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 9 transitions, 26 flow [2023-08-30 12:49:01,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 12:49:01,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:01,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:49:01,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:49:01,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 12:49:01,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:01,436 INFO L85 PathProgramCache]: Analyzing trace with hash 365808231, now seen corresponding path program 1 times [2023-08-30 12:49:01,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:01,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255601367] [2023-08-30 12:49:01,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:01,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:01,542 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 12:49:01,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:01,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255601367] [2023-08-30 12:49:01,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255601367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:01,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:01,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:01,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504263302] [2023-08-30 12:49:01,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:01,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:01,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:01,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:01,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2023-08-30 12:49:01,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 9 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 12:49:01,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:01,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2023-08-30 12:49:01,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:01,583 INFO L130 PetriNetUnfolder]: 11/29 cut-off events. [2023-08-30 12:49:01,583 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:49:01,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 29 events. 11/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 6 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 56. Up to 24 conditions per place. [2023-08-30 12:49:01,584 INFO L137 encePairwiseOnDemand]: 162/166 looper letters, 9 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2023-08-30 12:49:01,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 54 flow [2023-08-30 12:49:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:01,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-08-30 12:49:01,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41164658634538154 [2023-08-30 12:49:01,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-08-30 12:49:01,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-08-30 12:49:01,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:01,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-08-30 12:49:01,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 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 12:49:01,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 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 12:49:01,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 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 12:49:01,589 INFO L175 Difference]: Start difference. First operand has 14 places, 9 transitions, 26 flow. Second operand 3 states and 205 transitions. [2023-08-30 12:49:01,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 54 flow [2023-08-30 12:49:01,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:01,590 INFO L231 Difference]: Finished difference. Result has 16 places, 10 transitions, 39 flow [2023-08-30 12:49:01,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2023-08-30 12:49:01,591 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 1 predicate places. [2023-08-30 12:49:01,591 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 39 flow [2023-08-30 12:49:01,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 12:49:01,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:01,591 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 12:49:01,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:49:01,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 12:49:01,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1544903837, now seen corresponding path program 1 times [2023-08-30 12:49:01,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:01,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43126508] [2023-08-30 12:49:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:01,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:01,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:49:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:01,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:49:01,621 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:49:01,622 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-08-30 12:49:01,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-08-30 12:49:01,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-08-30 12:49:01,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-08-30 12:49:01,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-08-30 12:49:01,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-08-30 12:49:01,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-08-30 12:49:01,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-08-30 12:49:01,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-08-30 12:49:01,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:49:01,626 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 12:49:01,628 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:49:01,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 12:49:01,663 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:49:01,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 125 transitions, 262 flow [2023-08-30 12:49:01,684 INFO L130 PetriNetUnfolder]: 13/147 cut-off events. [2023-08-30 12:49:01,684 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:49:01,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 147 events. 13/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2023-08-30 12:49:01,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 125 transitions, 262 flow [2023-08-30 12:49:01,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 125 transitions, 262 flow [2023-08-30 12:49:01,687 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:49:01,687 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 125 transitions, 262 flow [2023-08-30 12:49:01,688 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 125 transitions, 262 flow [2023-08-30 12:49:01,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 125 transitions, 262 flow [2023-08-30 12:49:01,705 INFO L130 PetriNetUnfolder]: 13/147 cut-off events. [2023-08-30 12:49:01,705 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:49:01,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 147 events. 13/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2023-08-30 12:49:01,710 INFO L119 LiptonReduction]: Number of co-enabled transitions 6480 [2023-08-30 12:49:03,798 INFO L134 LiptonReduction]: Checked pairs total: 10453 [2023-08-30 12:49:03,798 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-30 12:49:03,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:49:03,801 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;@4ee79391, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:49:03,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 12:49:03,803 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 12:49:03,803 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:49:03,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:03,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:49:03,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 12:49:03,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:03,804 INFO L85 PathProgramCache]: Analyzing trace with hash 642644172, now seen corresponding path program 1 times [2023-08-30 12:49:03,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:03,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655064574] [2023-08-30 12:49:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:03,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:03,851 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 12:49:03,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:03,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655064574] [2023-08-30 12:49:03,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655064574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:03,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:03,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:03,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879376389] [2023-08-30 12:49:03,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:03,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:03,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-08-30 12:49:03,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 12:49:03,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:03,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-08-30 12:49:03,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:03,958 INFO L130 PetriNetUnfolder]: 278/499 cut-off events. [2023-08-30 12:49:03,958 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-30 12:49:03,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 499 events. 278/499 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2561 event pairs, 50 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 856. Up to 412 conditions per place. [2023-08-30 12:49:03,963 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 32 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 12:49:03,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 169 flow [2023-08-30 12:49:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:03,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-30 12:49:03,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-30 12:49:03,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-30 12:49:03,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-30 12:49:03,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:03,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-30 12:49:03,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 12:49:03,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 12:49:03,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 12:49:03,969 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 351 transitions. [2023-08-30 12:49:03,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 169 flow [2023-08-30 12:49:03,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 167 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 12:49:03,971 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 76 flow [2023-08-30 12:49:03,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-08-30 12:49:03,972 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 12:49:03,972 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 76 flow [2023-08-30 12:49:03,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 12:49:03,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:03,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:49:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:49:03,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 12:49:03,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash 642644203, now seen corresponding path program 1 times [2023-08-30 12:49:03,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:03,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407341758] [2023-08-30 12:49:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:03,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:04,023 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 12:49:04,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:04,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407341758] [2023-08-30 12:49:04,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407341758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:04,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:04,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:04,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047946081] [2023-08-30 12:49:04,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:04,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:04,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:04,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:04,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-08-30 12:49:04,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 12:49:04,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:04,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-08-30 12:49:04,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:04,106 INFO L130 PetriNetUnfolder]: 249/450 cut-off events. [2023-08-30 12:49:04,107 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-30 12:49:04,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 450 events. 249/450 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2216 event pairs, 44 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 786. Up to 363 conditions per place. [2023-08-30 12:49:04,110 INFO L137 encePairwiseOnDemand]: 241/243 looper letters, 31 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 12:49:04,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 165 flow [2023-08-30 12:49:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-08-30 12:49:04,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773662551440329 [2023-08-30 12:49:04,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-08-30 12:49:04,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-08-30 12:49:04,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:04,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-08-30 12:49:04,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 12:49:04,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 12:49:04,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 12:49:04,115 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 76 flow. Second operand 3 states and 348 transitions. [2023-08-30 12:49:04,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 165 flow [2023-08-30 12:49:04,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:04,117 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 75 flow [2023-08-30 12:49:04,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-08-30 12:49:04,118 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 12:49:04,118 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 75 flow [2023-08-30 12:49:04,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 12:49:04,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:04,119 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:49:04,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 12:49:04,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash 978790552, now seen corresponding path program 1 times [2023-08-30 12:49:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:04,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165258110] [2023-08-30 12:49:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:49:04,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:04,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165258110] [2023-08-30 12:49:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165258110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:04,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:04,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:04,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968871253] [2023-08-30 12:49:04,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:04,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:04,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:04,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-08-30 12:49:04,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 12:49:04,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:04,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-08-30 12:49:04,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:04,253 INFO L130 PetriNetUnfolder]: 251/469 cut-off events. [2023-08-30 12:49:04,253 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-30 12:49:04,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 469 events. 251/469 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2272 event pairs, 21 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 744. Up to 336 conditions per place. [2023-08-30 12:49:04,256 INFO L137 encePairwiseOnDemand]: 241/243 looper letters, 29 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 12:49:04,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 154 flow [2023-08-30 12:49:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:04,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-08-30 12:49:04,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47462277091906724 [2023-08-30 12:49:04,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-08-30 12:49:04,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-08-30 12:49:04,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:04,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-08-30 12:49:04,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 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 12:49:04,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 12:49:04,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 12:49:04,261 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 75 flow. Second operand 3 states and 346 transitions. [2023-08-30 12:49:04,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 154 flow [2023-08-30 12:49:04,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:04,263 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 74 flow [2023-08-30 12:49:04,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-08-30 12:49:04,263 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 12:49:04,264 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 74 flow [2023-08-30 12:49:04,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 12:49:04,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:04,264 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:04,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:49:04,265 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 12:49:04,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash 978790670, now seen corresponding path program 1 times [2023-08-30 12:49:04,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:04,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176197837] [2023-08-30 12:49:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:49:04,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:04,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176197837] [2023-08-30 12:49:04,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176197837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:04,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:04,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:04,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595008108] [2023-08-30 12:49:04,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:04,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:04,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:04,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:04,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:04,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-08-30 12:49:04,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 12:49:04,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:04,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-08-30 12:49:04,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:04,376 INFO L130 PetriNetUnfolder]: 227/429 cut-off events. [2023-08-30 12:49:04,376 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 12:49:04,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 429 events. 227/429 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2020 event pairs, 21 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 688. Up to 296 conditions per place. [2023-08-30 12:49:04,379 INFO L137 encePairwiseOnDemand]: 241/243 looper letters, 28 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-30 12:49:04,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 150 flow [2023-08-30 12:49:04,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-30 12:49:04,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732510288065844 [2023-08-30 12:49:04,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-30 12:49:04,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-30 12:49:04,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:04,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-30 12:49:04,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 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 12:49:04,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 12:49:04,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 12:49:04,384 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 74 flow. Second operand 3 states and 345 transitions. [2023-08-30 12:49:04,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 150 flow [2023-08-30 12:49:04,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:04,385 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 73 flow [2023-08-30 12:49:04,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 12:49:04,386 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 12:49:04,386 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 73 flow [2023-08-30 12:49:04,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 12:49:04,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:04,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:04,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:49:04,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 12:49:04,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash -252756483, now seen corresponding path program 1 times [2023-08-30 12:49:04,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:04,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998844909] [2023-08-30 12:49:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:04,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:04,433 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 12:49:04,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:04,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998844909] [2023-08-30 12:49:04,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998844909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:04,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:04,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:49:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497847135] [2023-08-30 12:49:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:04,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:49:04,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:04,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:49:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:49:04,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 243 [2023-08-30 12:49:04,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 12:49:04,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:04,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 243 [2023-08-30 12:49:04,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:04,568 INFO L130 PetriNetUnfolder]: 369/673 cut-off events. [2023-08-30 12:49:04,568 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-30 12:49:04,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 673 events. 369/673 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3424 event pairs, 159 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 792. Up to 312 conditions per place. [2023-08-30 12:49:04,572 INFO L137 encePairwiseOnDemand]: 238/243 looper letters, 42 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-30 12:49:04,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 229 flow [2023-08-30 12:49:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:49:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:49:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2023-08-30 12:49:04,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46399176954732513 [2023-08-30 12:49:04,575 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2023-08-30 12:49:04,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2023-08-30 12:49:04,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:04,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2023-08-30 12:49:04,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 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 12:49:04,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 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 12:49:04,578 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 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 12:49:04,578 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 73 flow. Second operand 4 states and 451 transitions. [2023-08-30 12:49:04,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 229 flow [2023-08-30 12:49:04,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:04,580 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 95 flow [2023-08-30 12:49:04,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-08-30 12:49:04,581 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-30 12:49:04,581 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 95 flow [2023-08-30 12:49:04,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 12:49:04,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:04,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:04,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:49:04,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 12:49:04,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:04,582 INFO L85 PathProgramCache]: Analyzing trace with hash -252756484, now seen corresponding path program 1 times [2023-08-30 12:49:04,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:04,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687639183] [2023-08-30 12:49:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:04,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:04,647 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 12:49:04,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:04,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687639183] [2023-08-30 12:49:04,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687639183] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:04,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:04,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:49:04,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634820405] [2023-08-30 12:49:04,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:04,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:49:04,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:49:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:49:04,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 243 [2023-08-30 12:49:04,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 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 12:49:04,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:04,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 243 [2023-08-30 12:49:04,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:04,766 INFO L130 PetriNetUnfolder]: 325/606 cut-off events. [2023-08-30 12:49:04,766 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2023-08-30 12:49:04,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 606 events. 325/606 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3073 event pairs, 7 based on Foata normal form. 36/519 useless extension candidates. Maximal degree in co-relation 1174. Up to 282 conditions per place. [2023-08-30 12:49:04,770 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 41 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-30 12:49:04,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 232 flow [2023-08-30 12:49:04,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:49:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:49:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 453 transitions. [2023-08-30 12:49:04,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2023-08-30 12:49:04,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 453 transitions. [2023-08-30 12:49:04,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 453 transitions. [2023-08-30 12:49:04,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:04,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 453 transitions. [2023-08-30 12:49:04,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 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 12:49:04,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 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 12:49:04,776 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 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 12:49:04,776 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 95 flow. Second operand 4 states and 453 transitions. [2023-08-30 12:49:04,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 232 flow [2023-08-30 12:49:04,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:49:04,778 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 86 flow [2023-08-30 12:49:04,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-08-30 12:49:04,778 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-30 12:49:04,778 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 86 flow [2023-08-30 12:49:04,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 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 12:49:04,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:04,779 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 12:49:04,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:49:04,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 12:49:04,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash 12453003, now seen corresponding path program 1 times [2023-08-30 12:49:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:04,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951657893] [2023-08-30 12:49:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:04,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:49:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:04,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:49:04,796 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:49:04,796 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 12:49:04,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 12:49:04,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 12:49:04,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 12:49:04,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 12:49:04,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 12:49:04,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 12:49:04,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 12:49:04,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 12:49:04,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 12:49:04,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 12:49:04,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 12:49:04,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 12:49:04,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:49:04,799 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:04,799 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:49:04,799 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 12:49:04,819 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:49:04,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 171 transitions, 363 flow [2023-08-30 12:49:04,841 INFO L130 PetriNetUnfolder]: 19/205 cut-off events. [2023-08-30 12:49:04,841 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 12:49:04,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 205 events. 19/205 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 485 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2023-08-30 12:49:04,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 171 transitions, 363 flow [2023-08-30 12:49:04,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 171 transitions, 363 flow [2023-08-30 12:49:04,844 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:49:04,844 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 171 transitions, 363 flow [2023-08-30 12:49:04,845 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 171 transitions, 363 flow [2023-08-30 12:49:04,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 171 transitions, 363 flow [2023-08-30 12:49:04,863 INFO L130 PetriNetUnfolder]: 19/205 cut-off events. [2023-08-30 12:49:04,863 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 12:49:04,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 205 events. 19/205 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 485 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2023-08-30 12:49:04,871 INFO L119 LiptonReduction]: Number of co-enabled transitions 15930 [2023-08-30 12:49:07,545 INFO L134 LiptonReduction]: Checked pairs total: 28491 [2023-08-30 12:49:07,546 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-30 12:49:07,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:49:07,548 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;@4ee79391, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:49:07,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 12:49:07,549 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 12:49:07,549 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:49:07,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:07,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:49:07,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:07,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1006993630, now seen corresponding path program 1 times [2023-08-30 12:49:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:07,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554402128] [2023-08-30 12:49:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:07,593 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 12:49:07,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:07,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554402128] [2023-08-30 12:49:07,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554402128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:07,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:07,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:07,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732705201] [2023-08-30 12:49:07,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:07,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:07,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:07,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:07,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 340 [2023-08-30 12:49:07,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 12:49:07,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:07,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 340 [2023-08-30 12:49:07,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:08,106 INFO L130 PetriNetUnfolder]: 4190/6275 cut-off events. [2023-08-30 12:49:08,106 INFO L131 PetriNetUnfolder]: For 529/529 co-relation queries the response was YES. [2023-08-30 12:49:08,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12282 conditions, 6275 events. 4190/6275 cut-off events. For 529/529 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 40336 event pairs, 224 based on Foata normal form. 0/3929 useless extension candidates. Maximal degree in co-relation 3586. Up to 5182 conditions per place. [2023-08-30 12:49:08,148 INFO L137 encePairwiseOnDemand]: 337/340 looper letters, 52 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-30 12:49:08,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 273 flow [2023-08-30 12:49:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-30 12:49:08,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47843137254901963 [2023-08-30 12:49:08,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-30 12:49:08,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-30 12:49:08,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:08,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-30 12:49:08,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 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 12:49:08,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:08,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:08,158 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 117 flow. Second operand 3 states and 488 transitions. [2023-08-30 12:49:08,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 273 flow [2023-08-30 12:49:08,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 265 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 12:49:08,161 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 109 flow [2023-08-30 12:49:08,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-08-30 12:49:08,163 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 12:49:08,163 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 109 flow [2023-08-30 12:49:08,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 12:49:08,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:08,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:49:08,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 12:49:08,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:08,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1006993762, now seen corresponding path program 1 times [2023-08-30 12:49:08,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:08,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89890225] [2023-08-30 12:49:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:08,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:08,218 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 12:49:08,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:08,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89890225] [2023-08-30 12:49:08,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89890225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:08,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:08,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:08,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559689124] [2023-08-30 12:49:08,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:08,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:08,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:08,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:08,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:08,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 340 [2023-08-30 12:49:08,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 12:49:08,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:08,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 340 [2023-08-30 12:49:08,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:08,711 INFO L130 PetriNetUnfolder]: 3651/5362 cut-off events. [2023-08-30 12:49:08,711 INFO L131 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2023-08-30 12:49:08,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 5362 events. 3651/5362 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 30899 event pairs, 926 based on Foata normal form. 0/3483 useless extension candidates. Maximal degree in co-relation 10690. Up to 4557 conditions per place. [2023-08-30 12:49:08,758 INFO L137 encePairwiseOnDemand]: 338/340 looper letters, 51 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-08-30 12:49:08,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 263 flow [2023-08-30 12:49:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 12:49:08,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47549019607843135 [2023-08-30 12:49:08,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 12:49:08,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 12:49:08,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:08,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 12:49:08,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 12:49:08,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:08,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:08,764 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 109 flow. Second operand 3 states and 485 transitions. [2023-08-30 12:49:08,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 263 flow [2023-08-30 12:49:08,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:08,768 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 108 flow [2023-08-30 12:49:08,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-30 12:49:08,769 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 12:49:08,769 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 108 flow [2023-08-30 12:49:08,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 12:49:08,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:08,770 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:08,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:49:08,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:08,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1966258490, now seen corresponding path program 1 times [2023-08-30 12:49:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:08,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673163812] [2023-08-30 12:49:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:08,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:49:08,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:08,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673163812] [2023-08-30 12:49:08,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673163812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:08,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:08,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12355663] [2023-08-30 12:49:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:08,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:08,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 340 [2023-08-30 12:49:08,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 12:49:08,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:08,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 340 [2023-08-30 12:49:08,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:09,289 INFO L130 PetriNetUnfolder]: 3675/5447 cut-off events. [2023-08-30 12:49:09,289 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-08-30 12:49:09,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11070 conditions, 5447 events. 3675/5447 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 32080 event pairs, 547 based on Foata normal form. 0/3543 useless extension candidates. Maximal degree in co-relation 9323. Up to 4576 conditions per place. [2023-08-30 12:49:09,318 INFO L137 encePairwiseOnDemand]: 338/340 looper letters, 49 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-30 12:49:09,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 252 flow [2023-08-30 12:49:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-30 12:49:09,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47352941176470587 [2023-08-30 12:49:09,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-30 12:49:09,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-30 12:49:09,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:09,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-30 12:49:09,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 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 12:49:09,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:09,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:09,324 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 108 flow. Second operand 3 states and 483 transitions. [2023-08-30 12:49:09,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 252 flow [2023-08-30 12:49:09,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:09,328 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 107 flow [2023-08-30 12:49:09,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-30 12:49:09,328 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 12:49:09,329 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 107 flow [2023-08-30 12:49:09,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 12:49:09,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:09,329 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:09,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 12:49:09,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:09,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:09,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1966258578, now seen corresponding path program 1 times [2023-08-30 12:49:09,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:09,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181561930] [2023-08-30 12:49:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:09,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:49:09,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:09,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181561930] [2023-08-30 12:49:09,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181561930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:09,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:09,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:09,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919060079] [2023-08-30 12:49:09,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:09,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:09,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:09,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:09,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:09,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 340 [2023-08-30 12:49:09,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 12:49:09,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:09,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 340 [2023-08-30 12:49:09,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:09,751 INFO L130 PetriNetUnfolder]: 3331/5039 cut-off events. [2023-08-30 12:49:09,751 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2023-08-30 12:49:09,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10206 conditions, 5039 events. 3331/5039 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 30660 event pairs, 211 based on Foata normal form. 0/3369 useless extension candidates. Maximal degree in co-relation 8602. Up to 4024 conditions per place. [2023-08-30 12:49:09,780 INFO L137 encePairwiseOnDemand]: 338/340 looper letters, 48 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 12:49:09,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 248 flow [2023-08-30 12:49:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:09,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-30 12:49:09,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725490196078431 [2023-08-30 12:49:09,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-30 12:49:09,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-30 12:49:09,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:09,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-30 12:49:09,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 12:49:09,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:09,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:09,786 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 107 flow. Second operand 3 states and 482 transitions. [2023-08-30 12:49:09,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 248 flow [2023-08-30 12:49:09,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:09,790 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 106 flow [2023-08-30 12:49:09,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-08-30 12:49:09,791 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 12:49:09,791 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 106 flow [2023-08-30 12:49:09,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 12:49:09,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:09,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:09,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 12:49:09,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:09,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:09,793 INFO L85 PathProgramCache]: Analyzing trace with hash -703285576, now seen corresponding path program 1 times [2023-08-30 12:49:09,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:09,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392500829] [2023-08-30 12:49:09,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:09,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:09,827 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 12:49:09,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:09,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392500829] [2023-08-30 12:49:09,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392500829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:09,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:09,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:49:09,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906430862] [2023-08-30 12:49:09,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:09,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:49:09,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:09,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:49:09,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:49:09,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 340 [2023-08-30 12:49:09,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:49:09,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:09,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 340 [2023-08-30 12:49:09,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:10,538 INFO L130 PetriNetUnfolder]: 5411/8245 cut-off events. [2023-08-30 12:49:10,538 INFO L131 PetriNetUnfolder]: For 603/603 co-relation queries the response was YES. [2023-08-30 12:49:10,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16703 conditions, 8245 events. 5411/8245 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 52697 event pairs, 2345 based on Foata normal form. 0/5616 useless extension candidates. Maximal degree in co-relation 8718. Up to 3896 conditions per place. [2023-08-30 12:49:10,596 INFO L137 encePairwiseOnDemand]: 335/340 looper letters, 72 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-30 12:49:10,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 88 transitions, 372 flow [2023-08-30 12:49:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:49:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:49:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 637 transitions. [2023-08-30 12:49:10,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46838235294117647 [2023-08-30 12:49:10,599 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 637 transitions. [2023-08-30 12:49:10,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 637 transitions. [2023-08-30 12:49:10,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:10,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 637 transitions. [2023-08-30 12:49:10,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.25) internal successors, (637), 4 states have internal predecessors, (637), 0 states have call successors, (0), 0 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 12:49:10,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 12:49:10,605 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 12:49:10,605 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 106 flow. Second operand 4 states and 637 transitions. [2023-08-30 12:49:10,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 88 transitions, 372 flow [2023-08-30 12:49:10,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:10,607 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 128 flow [2023-08-30 12:49:10,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-08-30 12:49:10,608 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2023-08-30 12:49:10,608 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 128 flow [2023-08-30 12:49:10,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:49:10,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:10,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:10,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 12:49:10,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:10,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:10,609 INFO L85 PathProgramCache]: Analyzing trace with hash -703285578, now seen corresponding path program 1 times [2023-08-30 12:49:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:10,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944016459] [2023-08-30 12:49:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:10,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:10,678 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 12:49:10,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:10,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944016459] [2023-08-30 12:49:10,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944016459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:10,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:10,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929598099] [2023-08-30 12:49:10,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:10,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:10,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:10,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 340 [2023-08-30 12:49:10,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 12:49:10,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:10,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 340 [2023-08-30 12:49:10,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:11,165 INFO L130 PetriNetUnfolder]: 4497/6639 cut-off events. [2023-08-30 12:49:11,165 INFO L131 PetriNetUnfolder]: For 1479/1479 co-relation queries the response was YES. [2023-08-30 12:49:11,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14968 conditions, 6639 events. 4497/6639 cut-off events. For 1479/1479 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 38713 event pairs, 1187 based on Foata normal form. 324/5252 useless extension candidates. Maximal degree in co-relation 14800. Up to 5722 conditions per place. [2023-08-30 12:49:11,214 INFO L137 encePairwiseOnDemand]: 338/340 looper letters, 49 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-30 12:49:11,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 271 flow [2023-08-30 12:49:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-30 12:49:11,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725490196078431 [2023-08-30 12:49:11,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-30 12:49:11,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-30 12:49:11,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:11,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-30 12:49:11,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 12:49:11,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:11,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:11,220 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 128 flow. Second operand 3 states and 482 transitions. [2023-08-30 12:49:11,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 271 flow [2023-08-30 12:49:11,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:49:11,221 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 117 flow [2023-08-30 12:49:11,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-30 12:49:11,222 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-08-30 12:49:11,222 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 117 flow [2023-08-30 12:49:11,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 12:49:11,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:11,223 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:11,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 12:49:11,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:11,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1824051020, now seen corresponding path program 1 times [2023-08-30 12:49:11,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:11,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416803899] [2023-08-30 12:49:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:49:11,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:11,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416803899] [2023-08-30 12:49:11,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416803899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:11,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:11,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098304417] [2023-08-30 12:49:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:11,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:11,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:11,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 340 [2023-08-30 12:49:11,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 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 12:49:11,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:11,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 340 [2023-08-30 12:49:11,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:11,718 INFO L130 PetriNetUnfolder]: 4541/6929 cut-off events. [2023-08-30 12:49:11,718 INFO L131 PetriNetUnfolder]: For 1233/1233 co-relation queries the response was YES. [2023-08-30 12:49:11,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15150 conditions, 6929 events. 4541/6929 cut-off events. For 1233/1233 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 42060 event pairs, 561 based on Foata normal form. 0/5152 useless extension candidates. Maximal degree in co-relation 13176. Up to 5104 conditions per place. [2023-08-30 12:49:11,764 INFO L137 encePairwiseOnDemand]: 338/340 looper letters, 46 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 12:49:11,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 259 flow [2023-08-30 12:49:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-30 12:49:11,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46862745098039216 [2023-08-30 12:49:11,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-30 12:49:11,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-30 12:49:11,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:11,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-30 12:49:11,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 12:49:11,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:11,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:11,770 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 117 flow. Second operand 3 states and 478 transitions. [2023-08-30 12:49:11,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 259 flow [2023-08-30 12:49:11,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:11,772 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 116 flow [2023-08-30 12:49:11,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-30 12:49:11,772 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-08-30 12:49:11,772 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 116 flow [2023-08-30 12:49:11,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 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 12:49:11,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:11,773 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:11,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 12:49:11,773 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:11,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1824051210, now seen corresponding path program 1 times [2023-08-30 12:49:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067921502] [2023-08-30 12:49:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:11,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:49:11,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067921502] [2023-08-30 12:49:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067921502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:11,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:11,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:11,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063569157] [2023-08-30 12:49:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:11,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:11,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 340 [2023-08-30 12:49:11,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 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 12:49:11,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:11,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 340 [2023-08-30 12:49:11,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:12,233 INFO L130 PetriNetUnfolder]: 4101/6313 cut-off events. [2023-08-30 12:49:12,233 INFO L131 PetriNetUnfolder]: For 962/962 co-relation queries the response was YES. [2023-08-30 12:49:12,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13922 conditions, 6313 events. 4101/6313 cut-off events. For 962/962 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37989 event pairs, 561 based on Foata normal form. 0/4794 useless extension candidates. Maximal degree in co-relation 12112. Up to 4488 conditions per place. [2023-08-30 12:49:12,274 INFO L137 encePairwiseOnDemand]: 338/340 looper letters, 45 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 12:49:12,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 255 flow [2023-08-30 12:49:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-30 12:49:12,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676470588235294 [2023-08-30 12:49:12,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-30 12:49:12,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-30 12:49:12,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:12,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-30 12:49:12,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 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 12:49:12,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:12,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 12:49:12,280 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 116 flow. Second operand 3 states and 477 transitions. [2023-08-30 12:49:12,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 255 flow [2023-08-30 12:49:12,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:12,286 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 115 flow [2023-08-30 12:49:12,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-08-30 12:49:12,287 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-08-30 12:49:12,287 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 115 flow [2023-08-30 12:49:12,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 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 12:49:12,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:12,287 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:12,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 12:49:12,288 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:12,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:12,288 INFO L85 PathProgramCache]: Analyzing trace with hash -920105558, now seen corresponding path program 1 times [2023-08-30 12:49:12,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:12,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056323142] [2023-08-30 12:49:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:12,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:49:12,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:12,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056323142] [2023-08-30 12:49:12,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056323142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:12,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:12,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:49:12,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217335002] [2023-08-30 12:49:12,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:12,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:49:12,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:49:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:49:12,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 340 [2023-08-30 12:49:12,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 115 flow. Second operand has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 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 12:49:12,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:12,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 340 [2023-08-30 12:49:12,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:13,074 INFO L130 PetriNetUnfolder]: 6649/9987 cut-off events. [2023-08-30 12:49:13,075 INFO L131 PetriNetUnfolder]: For 1645/1645 co-relation queries the response was YES. [2023-08-30 12:49:13,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22247 conditions, 9987 events. 6649/9987 cut-off events. For 1645/1645 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 62097 event pairs, 3019 based on Foata normal form. 0/7678 useless extension candidates. Maximal degree in co-relation 19386. Up to 4822 conditions per place. [2023-08-30 12:49:13,150 INFO L137 encePairwiseOnDemand]: 335/340 looper letters, 67 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2023-08-30 12:49:13,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 379 flow [2023-08-30 12:49:13,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:49:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:49:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 629 transitions. [2023-08-30 12:49:13,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2023-08-30 12:49:13,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 629 transitions. [2023-08-30 12:49:13,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 629 transitions. [2023-08-30 12:49:13,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:13,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 629 transitions. [2023-08-30 12:49:13,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:49:13,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 12:49:13,158 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 12:49:13,158 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 115 flow. Second operand 4 states and 629 transitions. [2023-08-30 12:49:13,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 379 flow [2023-08-30 12:49:13,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:13,163 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 137 flow [2023-08-30 12:49:13,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-30 12:49:13,164 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2023-08-30 12:49:13,164 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 137 flow [2023-08-30 12:49:13,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 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 12:49:13,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:13,165 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:13,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 12:49:13,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:13,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash -920105557, now seen corresponding path program 1 times [2023-08-30 12:49:13,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:13,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000815312] [2023-08-30 12:49:13,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:13,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:49:13,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:13,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000815312] [2023-08-30 12:49:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000815312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:13,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:13,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:49:13,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842643713] [2023-08-30 12:49:13,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:13,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:49:13,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:13,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:49:13,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:49:13,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 340 [2023-08-30 12:49:13,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 12:49:13,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:13,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 340 [2023-08-30 12:49:13,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:13,808 INFO L130 PetriNetUnfolder]: 5769/8857 cut-off events. [2023-08-30 12:49:13,808 INFO L131 PetriNetUnfolder]: For 1955/1955 co-relation queries the response was YES. [2023-08-30 12:49:13,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20688 conditions, 8857 events. 5769/8857 cut-off events. For 1955/1955 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56738 event pairs, 267 based on Foata normal form. 396/7691 useless extension candidates. Maximal degree in co-relation 18086. Up to 4290 conditions per place. [2023-08-30 12:49:13,850 INFO L137 encePairwiseOnDemand]: 337/340 looper letters, 66 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-30 12:49:13,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 382 flow [2023-08-30 12:49:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:49:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:49:13,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2023-08-30 12:49:13,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46397058823529413 [2023-08-30 12:49:13,857 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2023-08-30 12:49:13,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2023-08-30 12:49:13,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:13,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2023-08-30 12:49:13,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 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 12:49:13,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 12:49:13,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 12:49:13,866 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 137 flow. Second operand 4 states and 631 transitions. [2023-08-30 12:49:13,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 382 flow [2023-08-30 12:49:13,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:49:13,869 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 128 flow [2023-08-30 12:49:13,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2023-08-30 12:49:13,870 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2023-08-30 12:49:13,870 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 128 flow [2023-08-30 12:49:13,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 12:49:13,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:13,871 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:13,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 12:49:13,871 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:13,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash -658030439, now seen corresponding path program 1 times [2023-08-30 12:49:13,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:13,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377480434] [2023-08-30 12:49:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:13,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:49:13,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377480434] [2023-08-30 12:49:13,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377480434] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:49:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890838161] [2023-08-30 12:49:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:13,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:49:13,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:49:13,924 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 12:49:13,925 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 12:49:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:14,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:49:14,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:49:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:49:14,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:49:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:49:14,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890838161] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:49:14,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:49:14,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 12:49:14,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87094109] [2023-08-30 12:49:14,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:49:14,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 12:49:14,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 12:49:14,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:49:14,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 340 [2023-08-30 12:49:14,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 128 flow. Second operand has 8 states, 8 states have (on average 141.375) internal successors, (1131), 8 states have internal predecessors, (1131), 0 states have call successors, (0), 0 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 12:49:14,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:14,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 340 [2023-08-30 12:49:14,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:14,857 INFO L130 PetriNetUnfolder]: 6169/9279 cut-off events. [2023-08-30 12:49:14,858 INFO L131 PetriNetUnfolder]: For 2421/2421 co-relation queries the response was YES. [2023-08-30 12:49:14,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22038 conditions, 9279 events. 6169/9279 cut-off events. For 2421/2421 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 58249 event pairs, 1443 based on Foata normal form. 0/7909 useless extension candidates. Maximal degree in co-relation 20956. Up to 3630 conditions per place. [2023-08-30 12:49:14,891 INFO L137 encePairwiseOnDemand]: 336/340 looper letters, 67 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-30 12:49:14,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 83 transitions, 410 flow [2023-08-30 12:49:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:49:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:49:14,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 625 transitions. [2023-08-30 12:49:14,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45955882352941174 [2023-08-30 12:49:14,894 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 625 transitions. [2023-08-30 12:49:14,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 625 transitions. [2023-08-30 12:49:14,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:14,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 625 transitions. [2023-08-30 12:49:14,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 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 12:49:14,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 12:49:14,898 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 12:49:14,898 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 128 flow. Second operand 4 states and 625 transitions. [2023-08-30 12:49:14,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 83 transitions, 410 flow [2023-08-30 12:49:14,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:49:14,901 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 136 flow [2023-08-30 12:49:14,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-08-30 12:49:14,901 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2023-08-30 12:49:14,901 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 136 flow [2023-08-30 12:49:14,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.375) internal successors, (1131), 8 states have internal predecessors, (1131), 0 states have call successors, (0), 0 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 12:49:14,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:14,902 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 12:49:14,908 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 12:49:15,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 12:49:15,108 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:49:15,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:15,108 INFO L85 PathProgramCache]: Analyzing trace with hash 556066101, now seen corresponding path program 1 times [2023-08-30 12:49:15,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:15,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973528536] [2023-08-30 12:49:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:15,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:15,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:49:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:15,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:49:15,127 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:49:15,128 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 12:49:15,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 12:49:15,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 12:49:15,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 12:49:15,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 12:49:15,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 12:49:15,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 12:49:15,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 12:49:15,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 12:49:15,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 12:49:15,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 12:49:15,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 12:49:15,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 12:49:15,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 12:49:15,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 12:49:15,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 12:49:15,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 12:49:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 12:49:15,131 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:15,134 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:49:15,135 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 12:49:15,166 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:49:15,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 217 transitions, 466 flow [2023-08-30 12:49:15,197 INFO L130 PetriNetUnfolder]: 25/263 cut-off events. [2023-08-30 12:49:15,197 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 12:49:15,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 263 events. 25/263 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 213. Up to 10 conditions per place. [2023-08-30 12:49:15,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 217 transitions, 466 flow [2023-08-30 12:49:15,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 217 transitions, 466 flow [2023-08-30 12:49:15,202 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:49:15,202 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 217 transitions, 466 flow [2023-08-30 12:49:15,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 217 transitions, 466 flow [2023-08-30 12:49:15,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 217 transitions, 466 flow [2023-08-30 12:49:15,229 INFO L130 PetriNetUnfolder]: 25/263 cut-off events. [2023-08-30 12:49:15,229 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 12:49:15,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 263 events. 25/263 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 213. Up to 10 conditions per place. [2023-08-30 12:49:15,245 INFO L119 LiptonReduction]: Number of co-enabled transitions 29520 [2023-08-30 12:49:18,490 INFO L134 LiptonReduction]: Checked pairs total: 48127 [2023-08-30 12:49:18,491 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-08-30 12:49:18,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:49:18,492 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;@4ee79391, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:49:18,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 12:49:18,494 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 12:49:18,494 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:49:18,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:18,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:49:18,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:49:18,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:18,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1456968919, now seen corresponding path program 1 times [2023-08-30 12:49:18,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:18,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210156975] [2023-08-30 12:49:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:18,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:18,525 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 12:49:18,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:18,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210156975] [2023-08-30 12:49:18,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210156975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:18,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:18,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:18,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038916496] [2023-08-30 12:49:18,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:18,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:18,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:18,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:18,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:18,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 12:49:18,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 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 12:49:18,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:18,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 12:49:18,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:22,466 INFO L130 PetriNetUnfolder]: 52466/71221 cut-off events. [2023-08-30 12:49:22,466 INFO L131 PetriNetUnfolder]: For 8148/8148 co-relation queries the response was YES. [2023-08-30 12:49:22,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140883 conditions, 71221 events. 52466/71221 cut-off events. For 8148/8148 co-relation queries the response was YES. Maximal size of possible extension queue 2981. Compared 499875 event pairs, 3464 based on Foata normal form. 0/43874 useless extension candidates. Maximal degree in co-relation 12845. Up to 59776 conditions per place. [2023-08-30 12:49:22,805 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 72 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-30 12:49:22,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 381 flow [2023-08-30 12:49:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2023-08-30 12:49:22,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49368088467614535 [2023-08-30 12:49:22,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2023-08-30 12:49:22,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2023-08-30 12:49:22,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:22,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2023-08-30 12:49:22,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 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 12:49:22,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:22,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:22,812 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 156 flow. Second operand 3 states and 625 transitions. [2023-08-30 12:49:22,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 381 flow [2023-08-30 12:49:22,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 363 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-30 12:49:22,816 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 142 flow [2023-08-30 12:49:22,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-30 12:49:22,817 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-30 12:49:22,817 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 142 flow [2023-08-30 12:49:22,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 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 12:49:22,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:22,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:49:22,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 12:49:22,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:49:22,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:22,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1456969054, now seen corresponding path program 1 times [2023-08-30 12:49:22,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:22,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980383703] [2023-08-30 12:49:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:22,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:22,848 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 12:49:22,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:22,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980383703] [2023-08-30 12:49:22,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980383703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:22,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:22,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:22,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161334347] [2023-08-30 12:49:22,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:22,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:22,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:22,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:22,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 12:49:22,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 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 12:49:22,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:22,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 12:49:22,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:26,070 INFO L130 PetriNetUnfolder]: 45717/60588 cut-off events. [2023-08-30 12:49:26,070 INFO L131 PetriNetUnfolder]: For 3805/3805 co-relation queries the response was YES. [2023-08-30 12:49:26,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122623 conditions, 60588 events. 45717/60588 cut-off events. For 3805/3805 co-relation queries the response was YES. Maximal size of possible extension queue 2528. Compared 375550 event pairs, 13346 based on Foata normal form. 0/38099 useless extension candidates. Maximal degree in co-relation 122510. Up to 52509 conditions per place. [2023-08-30 12:49:26,406 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 71 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-30 12:49:26,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 90 transitions, 361 flow [2023-08-30 12:49:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-08-30 12:49:26,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4913112164296998 [2023-08-30 12:49:26,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-08-30 12:49:26,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-08-30 12:49:26,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:26,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-08-30 12:49:26,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 12:49:26,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:26,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:26,412 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 142 flow. Second operand 3 states and 622 transitions. [2023-08-30 12:49:26,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 90 transitions, 361 flow [2023-08-30 12:49:26,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:26,416 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 141 flow [2023-08-30 12:49:26,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2023-08-30 12:49:26,417 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-30 12:49:26,417 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 141 flow [2023-08-30 12:49:26,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 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 12:49:26,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:26,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:26,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 12:49:26,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:49:26,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:26,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1687960249, now seen corresponding path program 1 times [2023-08-30 12:49:26,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:26,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982798264] [2023-08-30 12:49:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:26,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:49:26,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:26,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982798264] [2023-08-30 12:49:26,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982798264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:26,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:26,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:26,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479382674] [2023-08-30 12:49:26,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:26,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:26,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:26,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:26,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:26,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 12:49:26,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 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 12:49:26,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:26,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 12:49:26,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:29,693 INFO L130 PetriNetUnfolder]: 45867/61015 cut-off events. [2023-08-30 12:49:29,694 INFO L131 PetriNetUnfolder]: For 3793/3793 co-relation queries the response was YES. [2023-08-30 12:49:30,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124683 conditions, 61015 events. 45867/61015 cut-off events. For 3793/3793 co-relation queries the response was YES. Maximal size of possible extension queue 2543. Compared 384437 event pairs, 9601 based on Foata normal form. 0/38383 useless extension candidates. Maximal degree in co-relation 106182. Up to 53104 conditions per place. [2023-08-30 12:49:30,237 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 69 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-08-30 12:49:30,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 350 flow [2023-08-30 12:49:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-08-30 12:49:30,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48973143759873616 [2023-08-30 12:49:30,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-08-30 12:49:30,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-08-30 12:49:30,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:30,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-08-30 12:49:30,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 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 12:49:30,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:30,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:30,244 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 141 flow. Second operand 3 states and 620 transitions. [2023-08-30 12:49:30,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 350 flow [2023-08-30 12:49:30,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:30,249 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 140 flow [2023-08-30 12:49:30,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-30 12:49:30,250 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-30 12:49:30,250 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 140 flow [2023-08-30 12:49:30,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 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 12:49:30,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:30,251 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:30,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 12:49:30,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:49:30,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:30,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1687960362, now seen corresponding path program 1 times [2023-08-30 12:49:30,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:30,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222107550] [2023-08-30 12:49:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:30,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:49:30,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:30,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222107550] [2023-08-30 12:49:30,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222107550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:30,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:30,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13044912] [2023-08-30 12:49:30,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:30,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:30,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:30,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 12:49:30,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 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 12:49:30,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:30,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 12:49:30,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:33,521 INFO L130 PetriNetUnfolder]: 41635/56863 cut-off events. [2023-08-30 12:49:33,521 INFO L131 PetriNetUnfolder]: For 3364/3364 co-relation queries the response was YES. [2023-08-30 12:49:33,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114927 conditions, 56863 events. 41635/56863 cut-off events. For 3364/3364 co-relation queries the response was YES. Maximal size of possible extension queue 2333. Compared 389916 event pairs, 3073 based on Foata normal form. 0/36683 useless extension candidates. Maximal degree in co-relation 97964. Up to 46648 conditions per place. [2023-08-30 12:49:33,841 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 68 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-08-30 12:49:33,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 346 flow [2023-08-30 12:49:33,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 12:49:33,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894154818325436 [2023-08-30 12:49:33,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 12:49:33,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 12:49:33,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:33,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 12:49:33,845 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 12:49:33,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:33,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:33,847 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 140 flow. Second operand 3 states and 619 transitions. [2023-08-30 12:49:33,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 346 flow [2023-08-30 12:49:33,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:33,853 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 139 flow [2023-08-30 12:49:33,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-30 12:49:33,854 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-30 12:49:33,854 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 139 flow [2023-08-30 12:49:33,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 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 12:49:33,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:33,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:33,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 12:49:33,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:49:33,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:33,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1397375453, now seen corresponding path program 1 times [2023-08-30 12:49:33,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:33,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617741165] [2023-08-30 12:49:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:33,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:33,919 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 12:49:33,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:33,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617741165] [2023-08-30 12:49:33,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617741165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:33,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:33,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:49:33,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190922136] [2023-08-30 12:49:33,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:33,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:49:33,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:33,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:49:33,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:49:33,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 422 [2023-08-30 12:49:33,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 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 12:49:33,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:33,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 422 [2023-08-30 12:49:33,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:38,964 INFO L130 PetriNetUnfolder]: 63103/87065 cut-off events. [2023-08-30 12:49:38,964 INFO L131 PetriNetUnfolder]: For 5083/5083 co-relation queries the response was YES. [2023-08-30 12:49:39,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174853 conditions, 87065 events. 63103/87065 cut-off events. For 5083/5083 co-relation queries the response was YES. Maximal size of possible extension queue 3134. Compared 633540 event pairs, 3059 based on Foata normal form. 0/58379 useless extension candidates. Maximal degree in co-relation 174688. Up to 40218 conditions per place. [2023-08-30 12:49:39,503 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 102 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-08-30 12:49:39,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 511 flow [2023-08-30 12:49:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:49:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:49:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 827 transitions. [2023-08-30 12:49:39,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48992890995260663 [2023-08-30 12:49:39,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 827 transitions. [2023-08-30 12:49:39,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 827 transitions. [2023-08-30 12:49:39,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:39,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 827 transitions. [2023-08-30 12:49:39,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:49:39,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 12:49:39,525 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 12:49:39,525 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 139 flow. Second operand 4 states and 827 transitions. [2023-08-30 12:49:39,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 511 flow [2023-08-30 12:49:39,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 121 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:39,530 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 148 flow [2023-08-30 12:49:39,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=4, PETRI_FLOW=148, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-08-30 12:49:39,531 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2023-08-30 12:49:39,531 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 148 flow [2023-08-30 12:49:39,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 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 12:49:39,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:39,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:39,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 12:49:39,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:49:39,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1397375452, now seen corresponding path program 1 times [2023-08-30 12:49:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236887078] [2023-08-30 12:49:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:39,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:39,575 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 12:49:39,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:39,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236887078] [2023-08-30 12:49:39,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236887078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:39,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:39,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:49:39,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177923744] [2023-08-30 12:49:39,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:39,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:49:39,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:49:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:49:39,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 422 [2023-08-30 12:49:39,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 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 12:49:39,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:39,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 422 [2023-08-30 12:49:39,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:44,420 INFO L130 PetriNetUnfolder]: 56685/78135 cut-off events. [2023-08-30 12:49:44,420 INFO L131 PetriNetUnfolder]: For 10711/10711 co-relation queries the response was YES. [2023-08-30 12:49:44,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166483 conditions, 78135 events. 56685/78135 cut-off events. For 10711/10711 co-relation queries the response was YES. Maximal size of possible extension queue 2662. Compared 529200 event pairs, 31273 based on Foata normal form. 1458/57860 useless extension candidates. Maximal degree in co-relation 138658. Up to 45224 conditions per place. [2023-08-30 12:49:45,110 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 71 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-30 12:49:45,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 377 flow [2023-08-30 12:49:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:45,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 12:49:45,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826224328593997 [2023-08-30 12:49:45,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 12:49:45,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 12:49:45,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:45,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 12:49:45,115 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 12:49:45,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:45,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:45,117 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 148 flow. Second operand 3 states and 611 transitions. [2023-08-30 12:49:45,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 377 flow [2023-08-30 12:49:45,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:45,122 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 155 flow [2023-08-30 12:49:45,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=64, 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=155, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2023-08-30 12:49:45,123 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-08-30 12:49:45,123 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 155 flow [2023-08-30 12:49:45,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 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 12:49:45,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:45,123 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:45,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 12:49:45,124 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:49:45,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:45,124 INFO L85 PathProgramCache]: Analyzing trace with hash 374367295, now seen corresponding path program 1 times [2023-08-30 12:49:45,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:45,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580079267] [2023-08-30 12:49:45,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:45,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:49:45,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:45,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580079267] [2023-08-30 12:49:45,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580079267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:45,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:45,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:45,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576035025] [2023-08-30 12:49:45,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:45,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:45,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:45,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:45,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:45,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 12:49:45,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 12:49:45,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:45,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 12:49:45,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:49,562 INFO L130 PetriNetUnfolder]: 56461/75949 cut-off events. [2023-08-30 12:49:49,563 INFO L131 PetriNetUnfolder]: For 20000/20000 co-relation queries the response was YES. [2023-08-30 12:49:49,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169826 conditions, 75949 events. 56461/75949 cut-off events. For 20000/20000 co-relation queries the response was YES. Maximal size of possible extension queue 2656. Compared 498103 event pairs, 7787 based on Foata normal form. 0/54996 useless extension candidates. Maximal degree in co-relation 149943. Up to 64416 conditions per place. [2023-08-30 12:49:50,045 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 66 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2023-08-30 12:49:50,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 367 flow [2023-08-30 12:49:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-08-30 12:49:50,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48578199052132703 [2023-08-30 12:49:50,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-08-30 12:49:50,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-08-30 12:49:50,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:50,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-08-30 12:49:50,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 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 12:49:50,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:50,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:50,051 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 155 flow. Second operand 3 states and 615 transitions. [2023-08-30 12:49:50,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 367 flow [2023-08-30 12:49:50,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:49:50,223 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 151 flow [2023-08-30 12:49:50,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-08-30 12:49:50,224 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2023-08-30 12:49:50,224 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 151 flow [2023-08-30 12:49:50,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 12:49:50,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:50,224 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:50,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 12:49:50,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:49:50,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash 374367535, now seen corresponding path program 1 times [2023-08-30 12:49:50,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:50,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187338946] [2023-08-30 12:49:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:49:50,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:50,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187338946] [2023-08-30 12:49:50,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187338946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:50,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:50,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:49:50,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810017285] [2023-08-30 12:49:50,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:50,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:50,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:50,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 12:49:50,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 12:49:50,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:50,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 12:49:50,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:54,021 INFO L130 PetriNetUnfolder]: 50917/69701 cut-off events. [2023-08-30 12:49:54,021 INFO L131 PetriNetUnfolder]: For 13029/13029 co-relation queries the response was YES. [2023-08-30 12:49:54,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152446 conditions, 69701 events. 50917/69701 cut-off events. For 13029/13029 co-relation queries the response was YES. Maximal size of possible extension queue 2445. Compared 474576 event pairs, 4091 based on Foata normal form. 0/51344 useless extension candidates. Maximal degree in co-relation 135686. Up to 56584 conditions per place. [2023-08-30 12:49:54,636 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 65 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2023-08-30 12:49:54,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 357 flow [2023-08-30 12:49:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2023-08-30 12:49:54,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849921011058452 [2023-08-30 12:49:54,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions. [2023-08-30 12:49:54,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions. [2023-08-30 12:49:54,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:54,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions. [2023-08-30 12:49:54,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 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 12:49:54,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:54,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:49:54,641 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 151 flow. Second operand 3 states and 614 transitions. [2023-08-30 12:49:54,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 357 flow [2023-08-30 12:49:54,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:49:54,665 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 150 flow [2023-08-30 12:49:54,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-08-30 12:49:54,665 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2023-08-30 12:49:54,665 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 150 flow [2023-08-30 12:49:54,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 12:49:54,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:54,666 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:54,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 12:49:54,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:49:54,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash -23719357, now seen corresponding path program 1 times [2023-08-30 12:49:54,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:54,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660987518] [2023-08-30 12:49:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:49:54,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:54,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660987518] [2023-08-30 12:49:54,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660987518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:54,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:54,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:49:54,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620312413] [2023-08-30 12:49:54,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:54,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:49:54,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:54,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:49:54,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:49:54,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 422 [2023-08-30 12:49:54,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 12:49:54,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:54,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 422 [2023-08-30 12:49:54,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:50:00,970 INFO L130 PetriNetUnfolder]: 77181/106483 cut-off events. [2023-08-30 12:50:00,971 INFO L131 PetriNetUnfolder]: For 19801/19801 co-relation queries the response was YES. [2023-08-30 12:50:01,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231338 conditions, 106483 events. 77181/106483 cut-off events. For 19801/19801 co-relation queries the response was YES. Maximal size of possible extension queue 3462. Compared 775600 event pairs, 3797 based on Foata normal form. 0/80889 useless extension candidates. Maximal degree in co-relation 205992. Up to 49170 conditions per place. [2023-08-30 12:50:01,689 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 97 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-08-30 12:50:01,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 115 transitions, 524 flow [2023-08-30 12:50:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:50:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:50:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 819 transitions. [2023-08-30 12:50:01,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48518957345971564 [2023-08-30 12:50:01,694 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 819 transitions. [2023-08-30 12:50:01,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 819 transitions. [2023-08-30 12:50:01,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:50:01,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 819 transitions. [2023-08-30 12:50:01,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 0 states have call successors, (0), 0 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 12:50:01,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 12:50:01,698 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 12:50:01,698 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 150 flow. Second operand 4 states and 819 transitions. [2023-08-30 12:50:01,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 115 transitions, 524 flow [2023-08-30 12:50:01,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:50:01,711 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 159 flow [2023-08-30 12:50:01,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-08-30 12:50:01,711 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2023-08-30 12:50:01,712 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 159 flow [2023-08-30 12:50:01,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 12:50:01,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:50:01,712 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:50:01,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 12:50:01,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:50:01,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:50:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash -23719358, now seen corresponding path program 1 times [2023-08-30 12:50:01,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:50:01,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514040716] [2023-08-30 12:50:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:50:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:50:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:50:01,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:50:01,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:50:01,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514040716] [2023-08-30 12:50:01,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514040716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:50:01,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:50:01,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:50:01,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656741097] [2023-08-30 12:50:01,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:50:01,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:50:01,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:50:01,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:50:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:50:01,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 422 [2023-08-30 12:50:01,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 12:50:01,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:50:01,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 422 [2023-08-30 12:50:01,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:50:07,993 INFO L130 PetriNetUnfolder]: 70471/98077 cut-off events. [2023-08-30 12:50:07,993 INFO L131 PetriNetUnfolder]: For 24318/24318 co-relation queries the response was YES. [2023-08-30 12:50:08,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221948 conditions, 98077 events. 70471/98077 cut-off events. For 24318/24318 co-relation queries the response was YES. Maximal size of possible extension queue 3173. Compared 701196 event pairs, 37145 based on Foata normal form. 1782/80980 useless extension candidates. Maximal degree in co-relation 197808. Up to 55334 conditions per place. [2023-08-30 12:50:08,663 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 68 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 12:50:08,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 388 flow [2023-08-30 12:50:08,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:50:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:50:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-08-30 12:50:08,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4786729857819905 [2023-08-30 12:50:08,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-08-30 12:50:08,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-08-30 12:50:08,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:50:08,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-08-30 12:50:08,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 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 12:50:08,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:50:08,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:50:08,668 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 159 flow. Second operand 3 states and 606 transitions. [2023-08-30 12:50:08,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 388 flow [2023-08-30 12:50:08,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:50:08,677 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 166 flow [2023-08-30 12:50:08,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2023-08-30 12:50:08,678 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2023-08-30 12:50:08,678 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 166 flow [2023-08-30 12:50:08,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 12:50:08,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:50:08,678 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:50:08,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 12:50:08,678 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:50:08,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:50:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash -494451796, now seen corresponding path program 1 times [2023-08-30 12:50:08,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:50:08,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192030964] [2023-08-30 12:50:08,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:50:08,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:50:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:50:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:50:08,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:50:08,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192030964] [2023-08-30 12:50:08,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192030964] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:50:08,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275912470] [2023-08-30 12:50:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:50:08,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:50:08,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:50:08,729 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 12:50:08,732 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 12:50:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:50:08,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:50:08,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:50:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:50:08,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:50:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:50:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275912470] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:50:08,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:50:08,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 12:50:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503091521] [2023-08-30 12:50:08,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:50:08,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 12:50:08,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:50:08,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 12:50:08,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:50:08,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 422 [2023-08-30 12:50:08,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 166 flow. Second operand has 8 states, 8 states have (on average 180.375) internal successors, (1443), 8 states have internal predecessors, (1443), 0 states have call successors, (0), 0 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 12:50:08,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:50:08,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 422 [2023-08-30 12:50:08,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:50:15,560 INFO L130 PetriNetUnfolder]: 76189/103889 cut-off events. [2023-08-30 12:50:15,561 INFO L131 PetriNetUnfolder]: For 33784/33784 co-relation queries the response was YES. [2023-08-30 12:50:15,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245169 conditions, 103889 events. 76189/103889 cut-off events. For 33784/33784 co-relation queries the response was YES. Maximal size of possible extension queue 3151. Compared 721964 event pairs, 19229 based on Foata normal form. 1784/86209 useless extension candidates. Maximal degree in co-relation 238258. Up to 41294 conditions per place. [2023-08-30 12:50:16,529 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 97 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-30 12:50:16,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 564 flow [2023-08-30 12:50:16,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:50:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:50:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 811 transitions. [2023-08-30 12:50:16,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48045023696682465 [2023-08-30 12:50:16,531 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 811 transitions. [2023-08-30 12:50:16,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 811 transitions. [2023-08-30 12:50:16,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:50:16,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 811 transitions. [2023-08-30 12:50:16,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 12:50:16,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 12:50:16,534 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 12:50:16,534 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 166 flow. Second operand 4 states and 811 transitions. [2023-08-30 12:50:16,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 564 flow [2023-08-30 12:50:16,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:50:16,544 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 171 flow [2023-08-30 12:50:16,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2023-08-30 12:50:16,545 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2023-08-30 12:50:16,545 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 171 flow [2023-08-30 12:50:16,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.375) internal successors, (1443), 8 states have internal predecessors, (1443), 0 states have call successors, (0), 0 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 12:50:16,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:50:16,545 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:50:16,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:50:16,746 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,SelfDestructingSolverStorable33 [2023-08-30 12:50:16,746 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:50:16,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:50:16,746 INFO L85 PathProgramCache]: Analyzing trace with hash 370051169, now seen corresponding path program 1 times [2023-08-30 12:50:16,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:50:16,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473103372] [2023-08-30 12:50:16,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:50:16,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:50:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:50:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 12:50:16,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:50:16,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473103372] [2023-08-30 12:50:16,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473103372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:50:16,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:50:16,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:50:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909980384] [2023-08-30 12:50:16,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:50:16,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:50:16,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:50:16,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:50:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:50:16,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 12:50:16,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 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 12:50:16,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:50:16,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 12:50:16,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:50:23,313 INFO L130 PetriNetUnfolder]: 75837/104359 cut-off events. [2023-08-30 12:50:23,313 INFO L131 PetriNetUnfolder]: For 46764/46764 co-relation queries the response was YES. [2023-08-30 12:50:23,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254838 conditions, 104359 events. 75837/104359 cut-off events. For 46764/46764 co-relation queries the response was YES. Maximal size of possible extension queue 3170. Compared 724073 event pairs, 10857 based on Foata normal form. 0/85046 useless extension candidates. Maximal degree in co-relation 226965. Up to 78144 conditions per place. [2023-08-30 12:50:24,032 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 63 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-08-30 12:50:24,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 388 flow [2023-08-30 12:50:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:50:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:50:24,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-30 12:50:24,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4802527646129542 [2023-08-30 12:50:24,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-30 12:50:24,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-30 12:50:24,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:50:24,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-30 12:50:24,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 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 12:50:24,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:50:24,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:50:24,038 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 171 flow. Second operand 3 states and 608 transitions. [2023-08-30 12:50:24,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 388 flow [2023-08-30 12:50:24,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:50:24,051 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 169 flow [2023-08-30 12:50:24,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2023-08-30 12:50:24,052 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2023-08-30 12:50:24,052 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 169 flow [2023-08-30 12:50:24,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 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 12:50:24,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:50:24,052 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:50:24,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 12:50:24,053 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:50:24,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:50:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash 370051375, now seen corresponding path program 1 times [2023-08-30 12:50:24,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:50:24,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713913903] [2023-08-30 12:50:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:50:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:50:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:50:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 12:50:24,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:50:24,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713913903] [2023-08-30 12:50:24,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713913903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:50:24,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:50:24,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:50:24,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905984870] [2023-08-30 12:50:24,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:50:24,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:50:24,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:50:24,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:50:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:50:24,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 12:50:24,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 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 12:50:24,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:50:24,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 12:50:24,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:50:30,166 INFO L130 PetriNetUnfolder]: 68445/94855 cut-off events. [2023-08-30 12:50:30,166 INFO L131 PetriNetUnfolder]: For 40606/40606 co-relation queries the response was YES. [2023-08-30 12:50:30,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231263 conditions, 94855 events. 68445/94855 cut-off events. For 40606/40606 co-relation queries the response was YES. Maximal size of possible extension queue 2851. Compared 657372 event pairs, 10857 based on Foata normal form. 0/78446 useless extension candidates. Maximal degree in co-relation 207473. Up to 68640 conditions per place. [2023-08-30 12:50:30,837 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 62 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2023-08-30 12:50:30,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 78 transitions, 382 flow [2023-08-30 12:50:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:50:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:50:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-30 12:50:30,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794628751974723 [2023-08-30 12:50:30,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-30 12:50:30,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-30 12:50:30,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:50:30,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-30 12:50:30,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 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 12:50:30,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:50:30,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:50:30,841 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 169 flow. Second operand 3 states and 607 transitions. [2023-08-30 12:50:30,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 78 transitions, 382 flow [2023-08-30 12:50:31,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:50:31,109 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 168 flow [2023-08-30 12:50:31,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2023-08-30 12:50:31,109 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2023-08-30 12:50:31,109 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 168 flow [2023-08-30 12:50:31,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 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 12:50:31,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:50:31,110 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:50:31,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 12:50:31,110 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:50:31,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:50:31,111 INFO L85 PathProgramCache]: Analyzing trace with hash 98977644, now seen corresponding path program 1 times [2023-08-30 12:50:31,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:50:31,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078672678] [2023-08-30 12:50:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:50:31,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:50:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:50:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:50:31,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:50:31,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078672678] [2023-08-30 12:50:31,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078672678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:50:31,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:50:31,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:50:31,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403196750] [2023-08-30 12:50:31,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:50:31,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:50:31,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:50:31,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:50:31,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:50:31,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 422 [2023-08-30 12:50:31,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 0 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 12:50:31,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:50:31,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 422 [2023-08-30 12:50:31,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:50:40,511 INFO L130 PetriNetUnfolder]: 103029/140839 cut-off events. [2023-08-30 12:50:40,511 INFO L131 PetriNetUnfolder]: For 62154/62154 co-relation queries the response was YES. [2023-08-30 12:50:41,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344351 conditions, 140839 events. 103029/140839 cut-off events. For 62154/62154 co-relation queries the response was YES. Maximal size of possible extension queue 4019. Compared 994899 event pairs, 8803 based on Foata normal form. 0/119748 useless extension candidates. Maximal degree in co-relation 308971. Up to 65736 conditions per place. [2023-08-30 12:50:41,831 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 92 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2023-08-30 12:50:41,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 109 transitions, 558 flow [2023-08-30 12:50:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:50:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:50:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 808 transitions. [2023-08-30 12:50:41,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4786729857819905 [2023-08-30 12:50:41,833 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 808 transitions. [2023-08-30 12:50:41,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 808 transitions. [2023-08-30 12:50:41,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:50:41,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 808 transitions. [2023-08-30 12:50:41,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 12:50:41,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 12:50:41,836 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 12:50:41,836 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 168 flow. Second operand 4 states and 808 transitions. [2023-08-30 12:50:41,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 109 transitions, 558 flow [2023-08-30 12:50:41,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:50:41,937 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 177 flow [2023-08-30 12:50:41,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-08-30 12:50:41,938 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2023-08-30 12:50:41,938 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 177 flow [2023-08-30 12:50:41,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 0 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 12:50:41,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:50:41,939 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:50:41,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 12:50:41,939 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:50:41,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:50:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 98977642, now seen corresponding path program 1 times [2023-08-30 12:50:41,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:50:41,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729651838] [2023-08-30 12:50:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:50:41,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:50:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:50:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:50:41,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:50:41,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729651838] [2023-08-30 12:50:41,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729651838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:50:41,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:50:41,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:50:41,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360961824] [2023-08-30 12:50:41,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:50:41,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:50:41,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:50:41,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:50:41,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:50:41,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 422 [2023-08-30 12:50:41,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 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 12:50:41,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:50:41,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 422 [2023-08-30 12:50:41,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:50:51,923 INFO L130 PetriNetUnfolder]: 94577/129835 cut-off events. [2023-08-30 12:50:51,923 INFO L131 PetriNetUnfolder]: For 64512/64512 co-relation queries the response was YES. [2023-08-30 12:50:52,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328950 conditions, 129835 events. 94577/129835 cut-off events. For 64512/64512 co-relation queries the response was YES. Maximal size of possible extension queue 3664. Compared 908570 event pairs, 50935 based on Foata normal form. 2376/118432 useless extension candidates. Maximal degree in co-relation 295396. Up to 74764 conditions per place. [2023-08-30 12:50:52,969 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 65 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-30 12:50:52,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 413 flow [2023-08-30 12:50:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:50:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:50:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-30 12:50:52,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731437598736177 [2023-08-30 12:50:52,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-30 12:50:52,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-30 12:50:52,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:50:52,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-30 12:50:52,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 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 12:50:52,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:50:52,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 12:50:52,973 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 177 flow. Second operand 3 states and 599 transitions. [2023-08-30 12:50:52,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 413 flow [2023-08-30 12:50:53,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 82 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:50:53,023 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 184 flow [2023-08-30 12:50:53,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2023-08-30 12:50:53,023 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2023-08-30 12:50:53,023 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 184 flow [2023-08-30 12:50:53,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 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 12:50:53,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:50:53,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:50:53,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 12:50:53,024 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:50:53,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:50:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash 662193754, now seen corresponding path program 1 times [2023-08-30 12:50:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:50:53,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635649063] [2023-08-30 12:50:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:50:53,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:50:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:50:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:50:53,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:50:53,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635649063] [2023-08-30 12:50:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635649063] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:50:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138937102] [2023-08-30 12:50:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:50:53,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:50:53,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:50:53,076 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 12:50:53,081 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 12:50:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:50:53,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:50:53,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:50:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:50:53,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:50:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:50:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138937102] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:50:53,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:50:53,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 12:50:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724127798] [2023-08-30 12:50:53,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:50:53,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 12:50:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:50:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 12:50:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:50:53,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 422 [2023-08-30 12:50:53,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 184 flow. Second operand has 8 states, 8 states have (on average 180.5) internal successors, (1444), 8 states have internal predecessors, (1444), 0 states have call successors, (0), 0 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 12:50:53,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:50:53,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 422 [2023-08-30 12:50:53,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:51:03,219 INFO L130 PetriNetUnfolder]: 102841/140143 cut-off events. [2023-08-30 12:51:03,219 INFO L131 PetriNetUnfolder]: For 79538/79538 co-relation queries the response was YES. [2023-08-30 12:51:03,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365611 conditions, 140143 events. 102841/140143 cut-off events. For 79538/79538 co-relation queries the response was YES. Maximal size of possible extension queue 3845. Compared 992344 event pairs, 23927 based on Foata normal form. 2400/128695 useless extension candidates. Maximal degree in co-relation 328454. Up to 55560 conditions per place. [2023-08-30 12:51:04,614 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 92 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2023-08-30 12:51:04,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 111 transitions, 598 flow [2023-08-30 12:51:04,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:51:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:51:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 800 transitions. [2023-08-30 12:51:04,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47393364928909953 [2023-08-30 12:51:04,616 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 800 transitions. [2023-08-30 12:51:04,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 800 transitions. [2023-08-30 12:51:04,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:51:04,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 800 transitions. [2023-08-30 12:51:04,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.0) internal successors, (800), 4 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 12:51:04,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 12:51:04,618 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 12:51:04,618 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 184 flow. Second operand 4 states and 800 transitions. [2023-08-30 12:51:04,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 111 transitions, 598 flow [2023-08-30 12:51:04,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 111 transitions, 584 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:51:04,670 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 189 flow [2023-08-30 12:51:04,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2023-08-30 12:51:04,671 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2023-08-30 12:51:04,671 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 189 flow [2023-08-30 12:51:04,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.5) internal successors, (1444), 8 states have internal predecessors, (1444), 0 states have call successors, (0), 0 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 12:51:04,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:51:04,672 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-30 12:51:04,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:51:04,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:51:04,876 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:51:04,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:51:04,877 INFO L85 PathProgramCache]: Analyzing trace with hash -875890988, now seen corresponding path program 1 times [2023-08-30 12:51:04,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:51:04,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555428441] [2023-08-30 12:51:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:51:04,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:51:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:51:04,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:51:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:51:04,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:51:04,899 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:51:04,899 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 12:51:04,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 12:51:04,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 12:51:04,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 12:51:04,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 12:51:04,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 12:51:04,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 12:51:04,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 12:51:04,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 12:51:04,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 12:51:04,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 12:51:04,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 12:51:04,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 12:51:04,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 12:51:04,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 12:51:04,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 12:51:04,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 12:51:04,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 12:51:04,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 12:51:04,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 12:51:04,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 12:51:04,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 12:51:04,902 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:51:04,903 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:51:04,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-30 12:51:04,929 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:51:04,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 263 transitions, 571 flow [2023-08-30 12:51:04,963 INFO L130 PetriNetUnfolder]: 31/321 cut-off events. [2023-08-30 12:51:04,964 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 12:51:04,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 321 events. 31/321 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 979 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 276. Up to 12 conditions per place. [2023-08-30 12:51:04,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 263 transitions, 571 flow [2023-08-30 12:51:04,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 263 transitions, 571 flow [2023-08-30 12:51:04,970 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:51:04,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 263 transitions, 571 flow [2023-08-30 12:51:04,970 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 263 transitions, 571 flow [2023-08-30 12:51:04,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 263 transitions, 571 flow [2023-08-30 12:51:05,003 INFO L130 PetriNetUnfolder]: 31/321 cut-off events. [2023-08-30 12:51:05,003 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 12:51:05,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 321 events. 31/321 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 979 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 276. Up to 12 conditions per place. [2023-08-30 12:51:05,017 INFO L119 LiptonReduction]: Number of co-enabled transitions 47250 [2023-08-30 12:51:08,234 INFO L134 LiptonReduction]: Checked pairs total: 78914 [2023-08-30 12:51:08,234 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-30 12:51:08,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:51:08,235 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;@4ee79391, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:51:08,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 12:51:08,237 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 12:51:08,237 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:51:08,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:51:08,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:51:08,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:51:08,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:51:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1991900413, now seen corresponding path program 1 times [2023-08-30 12:51:08,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:51:08,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936264544] [2023-08-30 12:51:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:51:08,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:51:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:51:08,265 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 12:51:08,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:51:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936264544] [2023-08-30 12:51:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936264544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:51:08,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:51:08,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:51:08,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143619503] [2023-08-30 12:51:08,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:51:08,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:51:08,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:51:08,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:51:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:51:08,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 513 [2023-08-30 12:51:08,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 12:51:08,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:51:08,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 513 [2023-08-30 12:51:08,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:51:53,810 INFO L130 PetriNetUnfolder]: 593396/738877 cut-off events. [2023-08-30 12:51:53,810 INFO L131 PetriNetUnfolder]: For 111540/111540 co-relation queries the response was YES. [2023-08-30 12:51:55,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506589 conditions, 738877 events. 593396/738877 cut-off events. For 111540/111540 co-relation queries the response was YES. Maximal size of possible extension queue 23220. Compared 4777234 event pairs, 185180 based on Foata normal form. 0/444313 useless extension candidates. Maximal degree in co-relation 146504. Up to 656098 conditions per place. [2023-08-30 12:51:59,119 INFO L137 encePairwiseOnDemand]: 510/513 looper letters, 92 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2023-08-30 12:51:59,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 115 transitions, 493 flow [2023-08-30 12:51:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:51:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:51:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 762 transitions. [2023-08-30 12:51:59,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4951267056530214 [2023-08-30 12:51:59,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 762 transitions. [2023-08-30 12:51:59,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 762 transitions. [2023-08-30 12:51:59,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:51:59,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 762 transitions. [2023-08-30 12:51:59,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:51:59,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:51:59,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:51:59,123 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 197 flow. Second operand 3 states and 762 transitions. [2023-08-30 12:51:59,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 115 transitions, 493 flow [2023-08-30 12:51:59,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 115 transitions, 461 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-08-30 12:51:59,170 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 175 flow [2023-08-30 12:51:59,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=513, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-08-30 12:51:59,170 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-08-30 12:51:59,170 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 175 flow [2023-08-30 12:51:59,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 12:51:59,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:51:59,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:51:59,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 12:51:59,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:51:59,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:51:59,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1991900661, now seen corresponding path program 1 times [2023-08-30 12:51:59,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:51:59,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618675578] [2023-08-30 12:51:59,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:51:59,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:51:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:51:59,203 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 12:51:59,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:51:59,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618675578] [2023-08-30 12:51:59,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618675578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:51:59,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:51:59,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:51:59,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475548425] [2023-08-30 12:51:59,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:51:59,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:51:59,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:51:59,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:51:59,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:51:59,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 513 [2023-08-30 12:51:59,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 12:51:59,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:51:59,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 513 [2023-08-30 12:51:59,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:43,965 INFO L130 PetriNetUnfolder]: 539643/693666 cut-off events. [2023-08-30 12:52:43,965 INFO L131 PetriNetUnfolder]: For 34297/34297 co-relation queries the response was YES. [2023-08-30 12:52:46,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370024 conditions, 693666 events. 539643/693666 cut-off events. For 34297/34297 co-relation queries the response was YES. Maximal size of possible extension queue 22062. Compared 5110131 event pairs, 44288 based on Foata normal form. 0/428675 useless extension candidates. Maximal degree in co-relation 1369910. Up to 575931 conditions per place. [2023-08-30 12:52:49,602 INFO L137 encePairwiseOnDemand]: 511/513 looper letters, 91 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2023-08-30 12:52:49,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 459 flow [2023-08-30 12:52:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:52:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:52:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-30 12:52:49,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49317738791423 [2023-08-30 12:52:49,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-30 12:52:49,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-30 12:52:49,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:49,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-30 12:52:49,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 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 12:52:49,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:52:49,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:52:49,606 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 175 flow. Second operand 3 states and 759 transitions. [2023-08-30 12:52:49,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 459 flow [2023-08-30 12:52:49,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 114 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:52:49,627 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 174 flow [2023-08-30 12:52:49,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=513, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2023-08-30 12:52:49,628 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-08-30 12:52:49,628 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 174 flow [2023-08-30 12:52:49,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 12:52:49,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:49,628 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:52:49,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 12:52:49,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:49,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:49,629 INFO L85 PathProgramCache]: Analyzing trace with hash -414838817, now seen corresponding path program 1 times [2023-08-30 12:52:49,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:49,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336366979] [2023-08-30 12:52:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:49,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:52:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:49,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336366979] [2023-08-30 12:52:49,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336366979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:52:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:52:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:52:49,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814266848] [2023-08-30 12:52:49,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:52:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:52:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:52:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:52:49,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 513 [2023-08-30 12:52:49,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 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 12:52:49,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:49,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 513 [2023-08-30 12:52:49,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:32,313 INFO L130 PetriNetUnfolder]: 537819/687863 cut-off events. [2023-08-30 12:53:32,313 INFO L131 PetriNetUnfolder]: For 34299/34299 co-relation queries the response was YES. [2023-08-30 12:53:34,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378920 conditions, 687863 events. 537819/687863 cut-off events. For 34299/34299 co-relation queries the response was YES. Maximal size of possible extension queue 21795. Compared 4989086 event pairs, 39199 based on Foata normal form. 0/424795 useless extension candidates. Maximal degree in co-relation 1180675. Up to 583168 conditions per place. [2023-08-30 12:53:38,090 INFO L137 encePairwiseOnDemand]: 511/513 looper letters, 89 selfloop transitions, 1 changer transitions 0/111 dead transitions. [2023-08-30 12:53:38,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 448 flow [2023-08-30 12:53:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:53:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:53:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2023-08-30 12:53:38,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918778427550357 [2023-08-30 12:53:38,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2023-08-30 12:53:38,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2023-08-30 12:53:38,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:38,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2023-08-30 12:53:38,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 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 12:53:38,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:53:38,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:53:38,095 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 174 flow. Second operand 3 states and 757 transitions. [2023-08-30 12:53:38,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 448 flow [2023-08-30 12:53:38,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:53:38,148 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 173 flow [2023-08-30 12:53:38,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=513, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-30 12:53:38,148 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-08-30 12:53:38,148 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 173 flow [2023-08-30 12:53:38,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 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 12:53:38,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:38,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:38,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 12:53:38,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:53:38,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:38,150 INFO L85 PathProgramCache]: Analyzing trace with hash -414838526, now seen corresponding path program 1 times [2023-08-30 12:53:38,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:38,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027371054] [2023-08-30 12:53:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:38,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:53:38,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:38,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027371054] [2023-08-30 12:53:38,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027371054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:38,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:38,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:53:38,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000294376] [2023-08-30 12:53:38,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:38,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:53:38,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:53:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:53:38,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 513 [2023-08-30 12:53:38,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 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 12:53:38,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:38,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 513 [2023-08-30 12:53:38,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:16,198 INFO L130 PetriNetUnfolder]: 470707/589679 cut-off events. [2023-08-30 12:54:16,198 INFO L131 PetriNetUnfolder]: For 30468/30468 co-relation queries the response was YES. [2023-08-30 12:54:18,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217136 conditions, 589679 events. 470707/589679 cut-off events. For 30468/30468 co-relation queries the response was YES. Maximal size of possible extension queue 18368. Compared 3813263 event pairs, 118255 based on Foata normal form. 0/370393 useless extension candidates. Maximal degree in co-relation 1041984. Up to 511912 conditions per place. [2023-08-30 12:54:21,128 INFO L137 encePairwiseOnDemand]: 511/513 looper letters, 88 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-08-30 12:54:21,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 110 transitions, 444 flow [2023-08-30 12:54:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:54:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:54:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 756 transitions. [2023-08-30 12:54:21,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2023-08-30 12:54:21,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 756 transitions. [2023-08-30 12:54:21,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 756 transitions. [2023-08-30 12:54:21,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:21,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 756 transitions. [2023-08-30 12:54:21,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 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 12:54:21,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:54:21,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:54:21,133 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 173 flow. Second operand 3 states and 756 transitions. [2023-08-30 12:54:21,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 110 transitions, 444 flow [2023-08-30 12:54:21,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 110 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:54:21,172 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 172 flow [2023-08-30 12:54:21,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=513, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-30 12:54:21,173 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-08-30 12:54:21,173 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 172 flow [2023-08-30 12:54:21,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 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 12:54:21,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:21,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:54:21,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 12:54:21,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:54:21,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1967781196, now seen corresponding path program 1 times [2023-08-30 12:54:21,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:21,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852209636] [2023-08-30 12:54:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:21,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:21,199 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 12:54:21,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:54:21,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852209636] [2023-08-30 12:54:21,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852209636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:54:21,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:54:21,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:54:21,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248745925] [2023-08-30 12:54:21,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:54:21,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:54:21,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:54:21,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:54:21,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:54:21,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 513 [2023-08-30 12:54:21,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 12:54:21,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:54:21,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 513 [2023-08-30 12:54:21,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:55:40,305 INFO L130 PetriNetUnfolder]: 779123/1015701 cut-off events. [2023-08-30 12:55:40,306 INFO L131 PetriNetUnfolder]: For 48911/48911 co-relation queries the response was YES. [2023-08-30 12:55:44,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042937 conditions, 1015701 events. 779123/1015701 cut-off events. For 48911/48911 co-relation queries the response was YES. Maximal size of possible extension queue 28649. Compared 7739718 event pairs, 353021 based on Foata normal form. 0/650988 useless extension candidates. Maximal degree in co-relation 1081746. Up to 498824 conditions per place. [2023-08-30 12:55:49,139 INFO L137 encePairwiseOnDemand]: 508/513 looper letters, 132 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2023-08-30 12:55:49,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 156 transitions, 658 flow [2023-08-30 12:55:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:55:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:55:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1009 transitions. [2023-08-30 12:55:49,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49171539961013644 [2023-08-30 12:55:49,141 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1009 transitions. [2023-08-30 12:55:49,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1009 transitions. [2023-08-30 12:55:49,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:55:49,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1009 transitions. [2023-08-30 12:55:49,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 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 12:55:49,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 513.0) internal successors, (2565), 5 states have internal predecessors, (2565), 0 states have call successors, (0), 0 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 12:55:49,144 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 513.0) internal successors, (2565), 5 states have internal predecessors, (2565), 0 states have call successors, (0), 0 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 12:55:49,144 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 172 flow. Second operand 4 states and 1009 transitions. [2023-08-30 12:55:49,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 156 transitions, 658 flow [2023-08-30 12:55:49,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 156 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:55:49,181 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 194 flow [2023-08-30 12:55:49,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=513, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2023-08-30 12:55:49,181 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2023-08-30 12:55:49,181 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 194 flow [2023-08-30 12:55:49,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 12:55:49,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:55:49,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:55:49,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-30 12:55:49,182 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:55:49,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:55:49,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1967781197, now seen corresponding path program 1 times [2023-08-30 12:55:49,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:55:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023181316] [2023-08-30 12:55:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:55:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:55:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:55:49,217 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 12:55:49,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:55:49,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023181316] [2023-08-30 12:55:49,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023181316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:55:49,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:55:49,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:55:49,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763211281] [2023-08-30 12:55:49,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:55:49,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:55:49,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:55:49,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:55:49,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:55:49,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 513 [2023-08-30 12:55:49,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 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 12:55:49,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:55:49,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 513 [2023-08-30 12:55:49,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:56:53,380 INFO L130 PetriNetUnfolder]: 667221/869741 cut-off events. [2023-08-30 12:56:53,381 INFO L131 PetriNetUnfolder]: For 76415/76415 co-relation queries the response was YES. [2023-08-30 12:56:57,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832354 conditions, 869741 events. 667221/869741 cut-off events. For 76415/76415 co-relation queries the response was YES. Maximal size of possible extension queue 24711. Compared 6695802 event pairs, 39185 based on Foata normal form. 26244/614486 useless extension candidates. Maximal degree in co-relation 1832184. Up to 725722 conditions per place. [2023-08-30 12:57:01,191 INFO L137 encePairwiseOnDemand]: 511/513 looper letters, 89 selfloop transitions, 1 changer transitions 0/111 dead transitions. [2023-08-30 12:57:01,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 111 transitions, 467 flow [2023-08-30 12:57:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:57:01,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:57:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 756 transitions. [2023-08-30 12:57:01,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2023-08-30 12:57:01,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 756 transitions. [2023-08-30 12:57:01,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 756 transitions. [2023-08-30 12:57:01,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:57:01,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 756 transitions. [2023-08-30 12:57:01,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 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 12:57:01,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:57:01,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:57:01,195 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 194 flow. Second operand 3 states and 756 transitions. [2023-08-30 12:57:01,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 111 transitions, 467 flow [2023-08-30 12:57:01,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 111 transitions, 463 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:57:01,238 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 183 flow [2023-08-30 12:57:01,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=513, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2023-08-30 12:57:01,238 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-08-30 12:57:01,238 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 183 flow [2023-08-30 12:57:01,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 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 12:57:01,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:57:01,239 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:57:01,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-30 12:57:01,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:57:01,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:57:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1104001192, now seen corresponding path program 1 times [2023-08-30 12:57:01,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:57:01,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260245286] [2023-08-30 12:57:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:57:01,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:57:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:57:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:57:01,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:57:01,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260245286] [2023-08-30 12:57:01,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260245286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:57:01,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:57:01,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:57:01,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923805955] [2023-08-30 12:57:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:57:01,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:57:01,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:57:01,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:57:01,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:57:01,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 513 [2023-08-30 12:57:01,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 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 12:57:01,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:57:01,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 513 [2023-08-30 12:57:01,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:58:00,773 INFO L130 PetriNetUnfolder]: 657325/840845 cut-off events. [2023-08-30 12:58:00,773 INFO L131 PetriNetUnfolder]: For 102457/102457 co-relation queries the response was YES. [2023-08-30 12:58:04,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1790448 conditions, 840845 events. 657325/840845 cut-off events. For 102457/102457 co-relation queries the response was YES. Maximal size of possible extension queue 23545. Compared 6145292 event pairs, 48533 based on Foata normal form. 0/570336 useless extension candidates. Maximal degree in co-relation 1584668. Up to 712272 conditions per place. [2023-08-30 12:58:08,019 INFO L137 encePairwiseOnDemand]: 511/513 looper letters, 86 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2023-08-30 12:58:08,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 107 transitions, 455 flow [2023-08-30 12:58:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:58:08,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:58:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2023-08-30 12:58:08,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48862897985705 [2023-08-30 12:58:08,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2023-08-30 12:58:08,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2023-08-30 12:58:08,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:58:08,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2023-08-30 12:58:08,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 12:58:08,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:58:08,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 12:58:08,023 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 183 flow. Second operand 3 states and 752 transitions. [2023-08-30 12:58:08,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 107 transitions, 455 flow [2023-08-30 12:58:08,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:58:08,080 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 182 flow [2023-08-30 12:58:08,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=513, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2023-08-30 12:58:08,081 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-08-30 12:58:08,081 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 182 flow [2023-08-30 12:58:08,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 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 12:58:08,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:58:08,081 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:58:08,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-30 12:58:08,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:58:08,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:58:08,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1104001355, now seen corresponding path program 1 times [2023-08-30 12:58:08,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:58:08,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585814734] [2023-08-30 12:58:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:58:08,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:58:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:58:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:58:08,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:58:08,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585814734] [2023-08-30 12:58:08,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585814734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:58:08,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:58:08,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:58:08,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514706987] [2023-08-30 12:58:08,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:58:08,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:58:08,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:58:08,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:58:08,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:58:08,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 513 [2023-08-30 12:58:08,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 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 12:58:08,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:58:08,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 513 [2023-08-30 12:58:08,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15