./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 09:49:02,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:49:02,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:49:02,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:49:02,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:49:02,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:49:02,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:49:02,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:49:02,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:49:02,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:49:02,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:49:02,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:49:02,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:49:02,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:49:02,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:49:02,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:49:02,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:49:02,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:49:02,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:49:02,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:49:02,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:49:02,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:49:02,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:49:02,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:49:02,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:49:02,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:49:02,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:49:02,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:49:02,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:49:02,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:49:02,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:49:02,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:49:02,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:49:02,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:49:02,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:49:02,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:49:02,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:49:02,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:49:02,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:49:02,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:49:02,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:49:02,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:49:02,511 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:49:02,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:49:02,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:49:02,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:49:02,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:49:02,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:49:02,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:49:02,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:49:02,515 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:49:02,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:49:02,516 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:49:02,516 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:49:02,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:49:02,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:49:02,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:49:02,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:49:02,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:49:02,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:49:02,518 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:49:02,518 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:49:02,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:49:02,518 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:49:02,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:49:02,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:49:02,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:49:02,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:49:02,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:49:02,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:49:02,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:49:02,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:49:02,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:49:02,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:49:02,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:49:02,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:49:02,521 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:49:02,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:49:02,521 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:49:02,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:49:02,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:49:02,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:49:02,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:49:02,868 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:49:02,869 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:49:02,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-30 09:49:04,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:49:04,353 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:49:04,353 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-30 09:49:04,376 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca243f0d1/69e42805f82e4b399784b36a5669f5fc/FLAGe1725f134 [2023-08-30 09:49:04,386 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca243f0d1/69e42805f82e4b399784b36a5669f5fc [2023-08-30 09:49:04,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:49:04,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:49:04,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:49:04,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:49:04,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:49:04,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ddd628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04, skipping insertion in model container [2023-08-30 09:49:04,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:49:04,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:49:04,701 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2023-08-30 09:49:04,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:49:04,737 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:49:04,771 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2023-08-30 09:49:04,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:49:04,834 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:49:04,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04 WrapperNode [2023-08-30 09:49:04,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:49:04,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:49:04,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:49:04,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:49:04,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,873 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-08-30 09:49:04,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:49:04,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:49:04,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:49:04,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:49:04,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,895 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:49:04,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:49:04,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:49:04,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:49:04,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:49:04,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:04,928 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 09:49:04,929 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 09:49:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:49:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:49:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:49:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:49:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:49:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 09:49:04,958 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 09:49:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:49:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:49:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:49:04,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:49:04,960 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 09:49:05,063 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:49:05,065 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:49:05,235 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:49:05,241 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:49:05,241 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 09:49:05,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:49:05 BoogieIcfgContainer [2023-08-30 09:49:05,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:49:05,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:49:05,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:49:05,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:49:05,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:49:04" (1/3) ... [2023-08-30 09:49:05,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b830a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:49:05, skipping insertion in model container [2023-08-30 09:49:05,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (2/3) ... [2023-08-30 09:49:05,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b830a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:49:05, skipping insertion in model container [2023-08-30 09:49:05,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:49:05" (3/3) ... [2023-08-30 09:49:05,250 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-08-30 09:49:05,256 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:49:05,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:49:05,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 09:49:05,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:49:05,366 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 09:49:05,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 121 transitions, 250 flow [2023-08-30 09:49:05,513 INFO L130 PetriNetUnfolder]: 17/153 cut-off events. [2023-08-30 09:49:05,517 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:49:05,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 153 events. 17/153 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 336 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 09:49:05,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 121 transitions, 250 flow [2023-08-30 09:49:05,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 118 transitions, 244 flow [2023-08-30 09:49:05,535 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:49:05,554 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 118 transitions, 244 flow [2023-08-30 09:49:05,557 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 118 transitions, 244 flow [2023-08-30 09:49:05,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 118 transitions, 244 flow [2023-08-30 09:49:05,610 INFO L130 PetriNetUnfolder]: 16/150 cut-off events. [2023-08-30 09:49:05,611 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:49:05,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 150 events. 16/150 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 334 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 09:49:05,614 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-08-30 09:49:08,614 INFO L134 LiptonReduction]: Checked pairs total: 5060 [2023-08-30 09:49:08,614 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-30 09:49:08,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:49:08,632 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;@24cf6ffa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:49:08,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 09:49:08,636 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 09:49:08,636 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:08,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:08,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 09:49:08,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:49:08,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:08,640 INFO L85 PathProgramCache]: Analyzing trace with hash 14288252, now seen corresponding path program 1 times [2023-08-30 09:49:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:08,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035991772] [2023-08-30 09:49:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:08,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:08,896 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 09:49:08,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:08,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035991772] [2023-08-30 09:49:08,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035991772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:08,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:08,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:49:08,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258922437] [2023-08-30 09:49:08,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:08,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:08,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:08,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:08,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:08,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 224 [2023-08-30 09:49:08,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:08,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:08,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 224 [2023-08-30 09:49:08,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:09,042 INFO L130 PetriNetUnfolder]: 108/246 cut-off events. [2023-08-30 09:49:09,042 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:49:09,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 246 events. 108/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 958 event pairs, 88 based on Foata normal form. 23/202 useless extension candidates. Maximal degree in co-relation 475. Up to 229 conditions per place. [2023-08-30 09:49:09,045 INFO L137 encePairwiseOnDemand]: 209/224 looper letters, 37 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-30 09:49:09,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 168 flow [2023-08-30 09:49:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-30 09:49:09,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461309523809523 [2023-08-30 09:49:09,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-30 09:49:09,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-30 09:49:09,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:09,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-30 09:49:09,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,081 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 88 flow. Second operand 3 states and 367 transitions. [2023-08-30 09:49:09,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 168 flow [2023-08-30 09:49:09,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:49:09,086 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 72 flow [2023-08-30 09:49:09,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-30 09:49:09,091 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-30 09:49:09,091 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 72 flow [2023-08-30 09:49:09,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:09,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:49:09,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:49:09,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:49:09,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:09,095 INFO L85 PathProgramCache]: Analyzing trace with hash 846116026, now seen corresponding path program 1 times [2023-08-30 09:49:09,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:09,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047464863] [2023-08-30 09:49:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:09,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,197 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 09:49:09,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:09,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047464863] [2023-08-30 09:49:09,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047464863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:09,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:09,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:49:09,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099287165] [2023-08-30 09:49:09,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:09,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:09,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:09,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:09,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 224 [2023-08-30 09:49:09,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:09,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 224 [2023-08-30 09:49:09,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:09,285 INFO L130 PetriNetUnfolder]: 87/203 cut-off events. [2023-08-30 09:49:09,286 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 09:49:09,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 203 events. 87/203 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 712 event pairs, 23 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 422. Up to 155 conditions per place. [2023-08-30 09:49:09,290 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 30 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-30 09:49:09,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 153 flow [2023-08-30 09:49:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-30 09:49:09,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163690476190477 [2023-08-30 09:49:09,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-30 09:49:09,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-30 09:49:09,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:09,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-30 09:49:09,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,298 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 72 flow. Second operand 3 states and 347 transitions. [2023-08-30 09:49:09,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 153 flow [2023-08-30 09:49:09,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:09,300 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 72 flow [2023-08-30 09:49:09,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-30 09:49:09,301 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-08-30 09:49:09,301 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 72 flow [2023-08-30 09:49:09,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:09,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:09,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:49:09,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:49:09,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:09,305 INFO L85 PathProgramCache]: Analyzing trace with hash -520730858, now seen corresponding path program 1 times [2023-08-30 09:49:09,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:09,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989863459] [2023-08-30 09:49:09,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:09,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,426 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 09:49:09,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:09,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989863459] [2023-08-30 09:49:09,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989863459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:09,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:09,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:09,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361062225] [2023-08-30 09:49:09,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:09,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:09,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:09,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:09,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:09,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 09:49:09,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:09,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 09:49:09,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:09,537 INFO L130 PetriNetUnfolder]: 78/184 cut-off events. [2023-08-30 09:49:09,538 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 09:49:09,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 184 events. 78/184 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 599 event pairs, 11 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 396. Up to 75 conditions per place. [2023-08-30 09:49:09,539 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 42 selfloop transitions, 4 changer transitions 2/50 dead transitions. [2023-08-30 09:49:09,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 227 flow [2023-08-30 09:49:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:49:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:49:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2023-08-30 09:49:09,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901785714285714 [2023-08-30 09:49:09,541 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2023-08-30 09:49:09,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2023-08-30 09:49:09,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:09,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2023-08-30 09:49:09,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,546 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,546 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 72 flow. Second operand 5 states and 549 transitions. [2023-08-30 09:49:09,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 227 flow [2023-08-30 09:49:09,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:09,548 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 74 flow [2023-08-30 09:49:09,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-08-30 09:49:09,549 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-30 09:49:09,549 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 74 flow [2023-08-30 09:49:09,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:09,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:09,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 09:49:09,550 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:49:09,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:09,551 INFO L85 PathProgramCache]: Analyzing trace with hash -520730867, now seen corresponding path program 1 times [2023-08-30 09:49:09,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:09,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807544416] [2023-08-30 09:49:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:09,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,603 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 09:49:09,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:09,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807544416] [2023-08-30 09:49:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807544416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:09,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:09,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:09,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187329797] [2023-08-30 09:49:09,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:09,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:09,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:09,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:09,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:09,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 09:49:09,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:09,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 09:49:09,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:09,720 INFO L130 PetriNetUnfolder]: 69/165 cut-off events. [2023-08-30 09:49:09,720 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 09:49:09,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 165 events. 69/165 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 508 event pairs, 10 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 374. Up to 61 conditions per place. [2023-08-30 09:49:09,722 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 38 selfloop transitions, 4 changer transitions 6/49 dead transitions. [2023-08-30 09:49:09,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 227 flow [2023-08-30 09:49:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:49:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:49:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2023-08-30 09:49:09,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48928571428571427 [2023-08-30 09:49:09,724 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2023-08-30 09:49:09,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2023-08-30 09:49:09,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:09,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2023-08-30 09:49:09,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,729 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,729 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 74 flow. Second operand 5 states and 548 transitions. [2023-08-30 09:49:09,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 227 flow [2023-08-30 09:49:09,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 219 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 09:49:09,731 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 64 flow [2023-08-30 09:49:09,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-08-30 09:49:09,732 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-08-30 09:49:09,732 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 64 flow [2023-08-30 09:49:09,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:09,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:09,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 09:49:09,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:49:09,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:09,734 INFO L85 PathProgramCache]: Analyzing trace with hash 770623322, now seen corresponding path program 1 times [2023-08-30 09:49:09,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:09,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054551283] [2023-08-30 09:49:09,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:09,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:09,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:09,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054551283] [2023-08-30 09:49:09,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054551283] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:09,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368481797] [2023-08-30 09:49:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:09,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:09,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:09,797 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 09:49:09,817 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 09:49:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:49:09,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:09,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:09,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368481797] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:09,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:09,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 09:49:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666805708] [2023-08-30 09:49:09,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:09,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:09,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-30 09:49:09,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 64 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:09,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-30 09:49:09,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:10,040 INFO L130 PetriNetUnfolder]: 16/46 cut-off events. [2023-08-30 09:49:10,041 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 09:49:10,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 46 events. 16/46 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 9/55 useless extension candidates. Maximal degree in co-relation 106. Up to 34 conditions per place. [2023-08-30 09:49:10,041 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-30 09:49:10,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 22 transitions, 108 flow [2023-08-30 09:49:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:49:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:49:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 430 transitions. [2023-08-30 09:49:10,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799107142857143 [2023-08-30 09:49:10,043 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 430 transitions. [2023-08-30 09:49:10,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 430 transitions. [2023-08-30 09:49:10,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:10,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 430 transitions. [2023-08-30 09:49:10,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,049 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,049 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 64 flow. Second operand 4 states and 430 transitions. [2023-08-30 09:49:10,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 22 transitions, 108 flow [2023-08-30 09:49:10,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 09:49:10,050 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-30 09:49:10,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-30 09:49:10,052 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -15 predicate places. [2023-08-30 09:49:10,052 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-30 09:49:10,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-08-30 09:49:10,055 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-08-30 09:49:10,055 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-08-30 09:49:10,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-08-30 09:49:10,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-08-30 09:49:10,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-08-30 09:49:10,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-08-30 09:49:10,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-08-30 09:49:10,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-08-30 09:49:10,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-08-30 09:49:10,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-08-30 09:49:10,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-08-30 09:49:10,069 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 09:49:10,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:10,267 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 09:49:10,268 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 09:49:10,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 121 transitions, 250 flow [2023-08-30 09:49:10,291 INFO L130 PetriNetUnfolder]: 17/153 cut-off events. [2023-08-30 09:49:10,292 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:49:10,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 153 events. 17/153 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 336 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 09:49:10,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 121 transitions, 250 flow [2023-08-30 09:49:10,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 112 transitions, 229 flow [2023-08-30 09:49:10,293 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:49:10,294 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 112 transitions, 229 flow [2023-08-30 09:49:10,294 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 112 transitions, 229 flow [2023-08-30 09:49:10,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 112 transitions, 229 flow [2023-08-30 09:49:10,307 INFO L130 PetriNetUnfolder]: 16/144 cut-off events. [2023-08-30 09:49:10,307 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:10,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 16/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 321 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 09:49:10,310 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-08-30 09:49:13,109 INFO L134 LiptonReduction]: Checked pairs total: 4858 [2023-08-30 09:49:13,109 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-30 09:49:13,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 09:49:13,111 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;@24cf6ffa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:49:13,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 09:49:13,119 INFO L130 PetriNetUnfolder]: 3/26 cut-off events. [2023-08-30 09:49:13,120 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:13,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:13,120 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 09:49:13,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 09:49:13,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:13,121 INFO L85 PathProgramCache]: Analyzing trace with hash -491616100, now seen corresponding path program 1 times [2023-08-30 09:49:13,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:13,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886576039] [2023-08-30 09:49:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:13,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:49:13,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 09:49:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:49:13,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 09:49:13,168 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 09:49:13,169 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 09:49:13,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 09:49:13,169 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 09:49:13,172 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 09:49:13,173 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 09:49:13,173 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 09:49:13,207 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 09:49:13,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:13,236 INFO L130 PetriNetUnfolder]: 31/259 cut-off events. [2023-08-30 09:49:13,236 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:49:13,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 31/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 718 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-30 09:49:13,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:13,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:13,240 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:49:13,241 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:13,242 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:13,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:13,261 INFO L130 PetriNetUnfolder]: 31/259 cut-off events. [2023-08-30 09:49:13,262 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:49:13,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 31/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 718 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-30 09:49:13,269 INFO L119 LiptonReduction]: Number of co-enabled transitions 10008 [2023-08-30 09:49:16,195 INFO L134 LiptonReduction]: Checked pairs total: 26993 [2023-08-30 09:49:16,195 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-30 09:49:16,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:49:16,197 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;@24cf6ffa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:49:16,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 09:49:16,199 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-08-30 09:49:16,199 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:16,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:16,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:49:16,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:16,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash 844550403, now seen corresponding path program 1 times [2023-08-30 09:49:16,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:16,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800673245] [2023-08-30 09:49:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:16,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:16,236 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 09:49:16,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800673245] [2023-08-30 09:49:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800673245] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:16,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:16,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:49:16,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917183818] [2023-08-30 09:49:16,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:16,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:16,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:16,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:16,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:16,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 283 [2023-08-30 09:49:16,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:16,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:16,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 283 [2023-08-30 09:49:16,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:16,870 INFO L130 PetriNetUnfolder]: 4812/7878 cut-off events. [2023-08-30 09:49:16,870 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-08-30 09:49:16,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15614 conditions, 7878 events. 4812/7878 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51697 event pairs, 4590 based on Foata normal form. 978/6207 useless extension candidates. Maximal degree in co-relation 10469. Up to 7633 conditions per place. [2023-08-30 09:49:16,912 INFO L137 encePairwiseOnDemand]: 263/283 looper letters, 59 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-30 09:49:16,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 276 flow [2023-08-30 09:49:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-08-30 09:49:16,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5700824499411072 [2023-08-30 09:49:16,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-08-30 09:49:16,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-08-30 09:49:16,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:16,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-08-30 09:49:16,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:16,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:16,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:16,919 INFO L175 Difference]: Start difference. First operand has 56 places, 68 transitions, 154 flow. Second operand 3 states and 484 transitions. [2023-08-30 09:49:16,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 276 flow [2023-08-30 09:49:16,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:49:16,933 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 140 flow [2023-08-30 09:49:16,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-30 09:49:16,934 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 09:49:16,935 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 140 flow [2023-08-30 09:49:16,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:16,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:16,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:16,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 09:49:16,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:16,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash -129279355, now seen corresponding path program 1 times [2023-08-30 09:49:16,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:16,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962815379] [2023-08-30 09:49:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:16,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:17,003 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 09:49:17,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:17,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962815379] [2023-08-30 09:49:17,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962815379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:17,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:49:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577641605] [2023-08-30 09:49:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:17,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:17,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:17,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 283 [2023-08-30 09:49:17,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:17,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:17,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 283 [2023-08-30 09:49:17,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:17,556 INFO L130 PetriNetUnfolder]: 4323/7119 cut-off events. [2023-08-30 09:49:17,556 INFO L131 PetriNetUnfolder]: For 463/463 co-relation queries the response was YES. [2023-08-30 09:49:17,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14851 conditions, 7119 events. 4323/7119 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 45318 event pairs, 1698 based on Foata normal form. 0/5078 useless extension candidates. Maximal degree in co-relation 14763. Up to 6515 conditions per place. [2023-08-30 09:49:17,619 INFO L137 encePairwiseOnDemand]: 275/283 looper letters, 64 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-08-30 09:49:17,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 330 flow [2023-08-30 09:49:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-08-30 09:49:17,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488810365135454 [2023-08-30 09:49:17,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-08-30 09:49:17,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-08-30 09:49:17,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:17,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-08-30 09:49:17,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:17,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:17,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:17,625 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 140 flow. Second operand 3 states and 466 transitions. [2023-08-30 09:49:17,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 330 flow [2023-08-30 09:49:17,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:17,630 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 165 flow [2023-08-30 09:49:17,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-30 09:49:17,632 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-08-30 09:49:17,632 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 165 flow [2023-08-30 09:49:17,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:17,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:17,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:49:17,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 09:49:17,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:17,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1675545845, now seen corresponding path program 1 times [2023-08-30 09:49:17,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:17,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35363485] [2023-08-30 09:49:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:17,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:49:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:17,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35363485] [2023-08-30 09:49:17,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35363485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:17,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:17,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:49:17,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064726126] [2023-08-30 09:49:17,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:17,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:17,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:17,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 283 [2023-08-30 09:49:17,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:17,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:17,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 283 [2023-08-30 09:49:17,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:18,149 INFO L130 PetriNetUnfolder]: 3995/6482 cut-off events. [2023-08-30 09:49:18,149 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-08-30 09:49:18,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14517 conditions, 6482 events. 3995/6482 cut-off events. For 713/713 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 43042 event pairs, 805 based on Foata normal form. 0/5104 useless extension candidates. Maximal degree in co-relation 10542. Up to 5009 conditions per place. [2023-08-30 09:49:18,177 INFO L137 encePairwiseOnDemand]: 279/283 looper letters, 73 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-30 09:49:18,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 391 flow [2023-08-30 09:49:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-30 09:49:18,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552414605418139 [2023-08-30 09:49:18,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-30 09:49:18,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-30 09:49:18,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:18,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-30 09:49:18,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,183 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 165 flow. Second operand 3 states and 469 transitions. [2023-08-30 09:49:18,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 391 flow [2023-08-30 09:49:18,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:18,186 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 174 flow [2023-08-30 09:49:18,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-30 09:49:18,187 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-08-30 09:49:18,187 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 174 flow [2023-08-30 09:49:18,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:18,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:49:18,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 09:49:18,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:18,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1675545869, now seen corresponding path program 1 times [2023-08-30 09:49:18,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:18,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237102525] [2023-08-30 09:49:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:18,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:18,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:18,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237102525] [2023-08-30 09:49:18,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237102525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:18,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:18,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:49:18,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112706286] [2023-08-30 09:49:18,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:18,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:18,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:18,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:18,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:18,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 283 [2023-08-30 09:49:18,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:18,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 283 [2023-08-30 09:49:18,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:18,709 INFO L130 PetriNetUnfolder]: 3667/6081 cut-off events. [2023-08-30 09:49:18,710 INFO L131 PetriNetUnfolder]: For 2278/2278 co-relation queries the response was YES. [2023-08-30 09:49:18,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13860 conditions, 6081 events. 3667/6081 cut-off events. For 2278/2278 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 36819 event pairs, 3563 based on Foata normal form. 178/5125 useless extension candidates. Maximal degree in co-relation 10026. Up to 5891 conditions per place. [2023-08-30 09:49:18,736 INFO L137 encePairwiseOnDemand]: 281/283 looper letters, 47 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-08-30 09:49:18,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 266 flow [2023-08-30 09:49:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-30 09:49:18,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229681978798587 [2023-08-30 09:49:18,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-30 09:49:18,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-30 09:49:18,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:18,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-30 09:49:18,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,742 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 174 flow. Second operand 3 states and 444 transitions. [2023-08-30 09:49:18,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 266 flow [2023-08-30 09:49:18,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:18,745 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 168 flow [2023-08-30 09:49:18,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=60, 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=168, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2023-08-30 09:49:18,746 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-08-30 09:49:18,746 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 168 flow [2023-08-30 09:49:18,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:18,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:18,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 09:49:18,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:18,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash -727682335, now seen corresponding path program 1 times [2023-08-30 09:49:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:18,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132434969] [2023-08-30 09:49:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:18,822 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 09:49:18,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:18,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132434969] [2023-08-30 09:49:18,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132434969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:18,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:18,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:18,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773732177] [2023-08-30 09:49:18,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:18,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:18,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:18,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:18,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:18,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-08-30 09:49:18,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:18,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-08-30 09:49:18,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:19,465 INFO L130 PetriNetUnfolder]: 4548/7588 cut-off events. [2023-08-30 09:49:19,465 INFO L131 PetriNetUnfolder]: For 1875/1875 co-relation queries the response was YES. [2023-08-30 09:49:19,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16970 conditions, 7588 events. 4548/7588 cut-off events. For 1875/1875 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 49153 event pairs, 722 based on Foata normal form. 0/6357 useless extension candidates. Maximal degree in co-relation 16956. Up to 4022 conditions per place. [2023-08-30 09:49:19,500 INFO L137 encePairwiseOnDemand]: 268/283 looper letters, 151 selfloop transitions, 19 changer transitions 0/177 dead transitions. [2023-08-30 09:49:19,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 177 transitions, 864 flow [2023-08-30 09:49:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:49:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:49:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1066 transitions. [2023-08-30 09:49:19,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381120646138314 [2023-08-30 09:49:19,504 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1066 transitions. [2023-08-30 09:49:19,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1066 transitions. [2023-08-30 09:49:19,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:19,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1066 transitions. [2023-08-30 09:49:19,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:19,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 283.0) internal successors, (2264), 8 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:19,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 283.0) internal successors, (2264), 8 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:19,512 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 168 flow. Second operand 7 states and 1066 transitions. [2023-08-30 09:49:19,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 177 transitions, 864 flow [2023-08-30 09:49:19,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 177 transitions, 863 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:19,517 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 326 flow [2023-08-30 09:49:19,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=326, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2023-08-30 09:49:19,519 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-08-30 09:49:19,520 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 326 flow [2023-08-30 09:49:19,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:19,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:19,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:19,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 09:49:19,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:19,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:19,521 INFO L85 PathProgramCache]: Analyzing trace with hash -727682263, now seen corresponding path program 1 times [2023-08-30 09:49:19,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:19,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833387975] [2023-08-30 09:49:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:19,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:19,585 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 09:49:19,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:19,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833387975] [2023-08-30 09:49:19,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833387975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:19,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:19,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:19,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948641586] [2023-08-30 09:49:19,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:19,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:19,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:19,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:19,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:19,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-08-30 09:49:19,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:19,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:19,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-08-30 09:49:19,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:20,307 INFO L130 PetriNetUnfolder]: 4271/7284 cut-off events. [2023-08-30 09:49:20,308 INFO L131 PetriNetUnfolder]: For 5953/5953 co-relation queries the response was YES. [2023-08-30 09:49:20,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20002 conditions, 7284 events. 4271/7284 cut-off events. For 5953/5953 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 47927 event pairs, 663 based on Foata normal form. 278/7202 useless extension candidates. Maximal degree in co-relation 19982. Up to 4138 conditions per place. [2023-08-30 09:49:20,355 INFO L137 encePairwiseOnDemand]: 268/283 looper letters, 154 selfloop transitions, 24 changer transitions 0/185 dead transitions. [2023-08-30 09:49:20,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 185 transitions, 1064 flow [2023-08-30 09:49:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:49:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:49:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1063 transitions. [2023-08-30 09:49:20,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365976779404341 [2023-08-30 09:49:20,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1063 transitions. [2023-08-30 09:49:20,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1063 transitions. [2023-08-30 09:49:20,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:20,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1063 transitions. [2023-08-30 09:49:20,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:20,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 283.0) internal successors, (2264), 8 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:20,368 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 283.0) internal successors, (2264), 8 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:20,368 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 326 flow. Second operand 7 states and 1063 transitions. [2023-08-30 09:49:20,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 185 transitions, 1064 flow [2023-08-30 09:49:20,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 185 transitions, 1060 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:20,388 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 516 flow [2023-08-30 09:49:20,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=516, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2023-08-30 09:49:20,389 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2023-08-30 09:49:20,389 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 516 flow [2023-08-30 09:49:20,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:20,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:20,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:20,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 09:49:20,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:20,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash -626857107, now seen corresponding path program 1 times [2023-08-30 09:49:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:20,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119973816] [2023-08-30 09:49:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:20,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:20,442 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 09:49:20,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:20,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119973816] [2023-08-30 09:49:20,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119973816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:20,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:20,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:20,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241087042] [2023-08-30 09:49:20,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:20,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:20,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:20,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:20,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-08-30 09:49:20,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 516 flow. Second operand has 5 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:20,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:20,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-08-30 09:49:20,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:21,248 INFO L130 PetriNetUnfolder]: 4667/7862 cut-off events. [2023-08-30 09:49:21,248 INFO L131 PetriNetUnfolder]: For 15062/15062 co-relation queries the response was YES. [2023-08-30 09:49:21,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24323 conditions, 7862 events. 4667/7862 cut-off events. For 15062/15062 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51406 event pairs, 1103 based on Foata normal form. 193/7677 useless extension candidates. Maximal degree in co-relation 24298. Up to 5193 conditions per place. [2023-08-30 09:49:21,305 INFO L137 encePairwiseOnDemand]: 270/283 looper letters, 136 selfloop transitions, 22 changer transitions 0/165 dead transitions. [2023-08-30 09:49:21,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 165 transitions, 1144 flow [2023-08-30 09:49:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:49:21,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:49:21,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 897 transitions. [2023-08-30 09:49:21,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282685512367491 [2023-08-30 09:49:21,309 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 897 transitions. [2023-08-30 09:49:21,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 897 transitions. [2023-08-30 09:49:21,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:21,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 897 transitions. [2023-08-30 09:49:21,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:21,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:21,315 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:21,315 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 516 flow. Second operand 6 states and 897 transitions. [2023-08-30 09:49:21,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 165 transitions, 1144 flow [2023-08-30 09:49:21,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 165 transitions, 1124 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:49:21,449 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 694 flow [2023-08-30 09:49:21,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2023-08-30 09:49:21,451 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2023-08-30 09:49:21,452 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 694 flow [2023-08-30 09:49:21,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:21,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:21,452 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:21,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 09:49:21,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:21,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash -626857106, now seen corresponding path program 1 times [2023-08-30 09:49:21,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:21,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052094823] [2023-08-30 09:49:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:21,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:21,511 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 09:49:21,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:21,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052094823] [2023-08-30 09:49:21,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052094823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:21,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:21,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:21,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854646854] [2023-08-30 09:49:21,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:21,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:21,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:21,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:21,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:21,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-08-30 09:49:21,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 694 flow. Second operand has 5 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:21,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:21,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-08-30 09:49:21,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:22,089 INFO L130 PetriNetUnfolder]: 4263/7201 cut-off events. [2023-08-30 09:49:22,090 INFO L131 PetriNetUnfolder]: For 19844/19844 co-relation queries the response was YES. [2023-08-30 09:49:22,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23645 conditions, 7201 events. 4263/7201 cut-off events. For 19844/19844 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 46122 event pairs, 1122 based on Foata normal form. 193/7039 useless extension candidates. Maximal degree in co-relation 23616. Up to 4913 conditions per place. [2023-08-30 09:49:22,139 INFO L137 encePairwiseOnDemand]: 270/283 looper letters, 131 selfloop transitions, 20 changer transitions 0/158 dead transitions. [2023-08-30 09:49:22,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 158 transitions, 1153 flow [2023-08-30 09:49:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:49:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:49:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 896 transitions. [2023-08-30 09:49:22,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276796230859835 [2023-08-30 09:49:22,142 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 896 transitions. [2023-08-30 09:49:22,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 896 transitions. [2023-08-30 09:49:22,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:22,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 896 transitions. [2023-08-30 09:49:22,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.33333333333334) internal successors, (896), 6 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:22,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:22,148 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:22,148 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 694 flow. Second operand 6 states and 896 transitions. [2023-08-30 09:49:22,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 158 transitions, 1153 flow [2023-08-30 09:49:22,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 158 transitions, 1140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:22,205 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 648 flow [2023-08-30 09:49:22,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2023-08-30 09:49:22,206 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2023-08-30 09:49:22,206 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 648 flow [2023-08-30 09:49:22,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:22,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:22,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 09:49:22,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:22,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1062628755, now seen corresponding path program 1 times [2023-08-30 09:49:22,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:22,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37912590] [2023-08-30 09:49:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:22,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:22,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:22,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37912590] [2023-08-30 09:49:22,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37912590] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:22,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285819471] [2023-08-30 09:49:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:22,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:22,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:22,277 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 09:49:22,309 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 09:49:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:22,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 09:49:22,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:22,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:22,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285819471] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:22,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:22,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-30 09:49:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127346786] [2023-08-30 09:49:22,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:22,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 09:49:22,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 09:49:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 09:49:22,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 283 [2023-08-30 09:49:22,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 648 flow. Second operand has 12 states, 12 states have (on average 126.58333333333333) internal successors, (1519), 12 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:22,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:22,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 283 [2023-08-30 09:49:22,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:23,747 INFO L130 PetriNetUnfolder]: 6144/10414 cut-off events. [2023-08-30 09:49:23,748 INFO L131 PetriNetUnfolder]: For 28385/28385 co-relation queries the response was YES. [2023-08-30 09:49:23,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33761 conditions, 10414 events. 6144/10414 cut-off events. For 28385/28385 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 71689 event pairs, 435 based on Foata normal form. 272/10123 useless extension candidates. Maximal degree in co-relation 33731. Up to 3161 conditions per place. [2023-08-30 09:49:23,809 INFO L137 encePairwiseOnDemand]: 269/283 looper letters, 378 selfloop transitions, 60 changer transitions 3/448 dead transitions. [2023-08-30 09:49:23,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 448 transitions, 2803 flow [2023-08-30 09:49:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 09:49:23,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 09:49:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3006 transitions. [2023-08-30 09:49:23,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058051489146895 [2023-08-30 09:49:23,817 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3006 transitions. [2023-08-30 09:49:23,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3006 transitions. [2023-08-30 09:49:23,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:23,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3006 transitions. [2023-08-30 09:49:23,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 143.14285714285714) internal successors, (3006), 21 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:23,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 283.0) internal successors, (6226), 22 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:23,835 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 283.0) internal successors, (6226), 22 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:23,835 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 648 flow. Second operand 21 states and 3006 transitions. [2023-08-30 09:49:23,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 448 transitions, 2803 flow [2023-08-30 09:49:23,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 448 transitions, 2789 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:49:23,886 INFO L231 Difference]: Finished difference. Result has 112 places, 114 transitions, 1098 flow [2023-08-30 09:49:23,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1098, PETRI_PLACES=112, PETRI_TRANSITIONS=114} [2023-08-30 09:49:23,887 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2023-08-30 09:49:23,887 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 114 transitions, 1098 flow [2023-08-30 09:49:23,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.58333333333333) internal successors, (1519), 12 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:23,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:23,887 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:23,892 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 09:49:24,088 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,SelfDestructingSolverStorable14 [2023-08-30 09:49:24,088 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:24,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:24,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1306307529, now seen corresponding path program 1 times [2023-08-30 09:49:24,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:24,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539125941] [2023-08-30 09:49:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:24,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:24,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539125941] [2023-08-30 09:49:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539125941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:24,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:24,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:24,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890245616] [2023-08-30 09:49:24,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:24,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:24,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:24,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:24,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:24,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 283 [2023-08-30 09:49:24,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 114 transitions, 1098 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:24,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:24,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 283 [2023-08-30 09:49:24,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:24,952 INFO L130 PetriNetUnfolder]: 5694/10076 cut-off events. [2023-08-30 09:49:24,952 INFO L131 PetriNetUnfolder]: For 40791/40791 co-relation queries the response was YES. [2023-08-30 09:49:24,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35173 conditions, 10076 events. 5694/10076 cut-off events. For 40791/40791 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 73010 event pairs, 3001 based on Foata normal form. 72/9349 useless extension candidates. Maximal degree in co-relation 35137. Up to 7964 conditions per place. [2023-08-30 09:49:25,005 INFO L137 encePairwiseOnDemand]: 273/283 looper letters, 152 selfloop transitions, 14 changer transitions 0/173 dead transitions. [2023-08-30 09:49:25,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 173 transitions, 1913 flow [2023-08-30 09:49:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:25,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-30 09:49:25,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5429917550058893 [2023-08-30 09:49:25,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-30 09:49:25,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-30 09:49:25,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:25,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-30 09:49:25,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:25,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:25,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:25,012 INFO L175 Difference]: Start difference. First operand has 112 places, 114 transitions, 1098 flow. Second operand 3 states and 461 transitions. [2023-08-30 09:49:25,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 173 transitions, 1913 flow [2023-08-30 09:49:25,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 173 transitions, 1724 flow, removed 73 selfloop flow, removed 4 redundant places. [2023-08-30 09:49:25,178 INFO L231 Difference]: Finished difference. Result has 111 places, 126 transitions, 1078 flow [2023-08-30 09:49:25,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1078, PETRI_PLACES=111, PETRI_TRANSITIONS=126} [2023-08-30 09:49:25,179 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2023-08-30 09:49:25,179 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 126 transitions, 1078 flow [2023-08-30 09:49:25,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:25,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:25,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:25,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 09:49:25,180 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:25,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:25,180 INFO L85 PathProgramCache]: Analyzing trace with hash 542257070, now seen corresponding path program 1 times [2023-08-30 09:49:25,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:25,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434924334] [2023-08-30 09:49:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:25,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:25,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:25,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434924334] [2023-08-30 09:49:25,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434924334] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:25,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468471328] [2023-08-30 09:49:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:25,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:25,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:25,254 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 09:49:25,273 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 09:49:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:25,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 09:49:25,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:25,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:49:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468471328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:25,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:49:25,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 09:49:25,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018424977] [2023-08-30 09:49:25,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:25,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:49:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:49:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:49:25,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 283 [2023-08-30 09:49:25,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 126 transitions, 1078 flow. Second operand has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:25,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:25,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 283 [2023-08-30 09:49:25,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:26,467 INFO L130 PetriNetUnfolder]: 5627/10006 cut-off events. [2023-08-30 09:49:26,468 INFO L131 PetriNetUnfolder]: For 32185/32253 co-relation queries the response was YES. [2023-08-30 09:49:26,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36536 conditions, 10006 events. 5627/10006 cut-off events. For 32185/32253 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 72539 event pairs, 1389 based on Foata normal form. 118/9395 useless extension candidates. Maximal degree in co-relation 36499. Up to 5773 conditions per place. [2023-08-30 09:49:26,521 INFO L137 encePairwiseOnDemand]: 269/283 looper letters, 241 selfloop transitions, 44 changer transitions 2/294 dead transitions. [2023-08-30 09:49:26,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 294 transitions, 2331 flow [2023-08-30 09:49:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:49:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:49:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1321 transitions. [2023-08-30 09:49:26,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186493914409108 [2023-08-30 09:49:26,525 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1321 transitions. [2023-08-30 09:49:26,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1321 transitions. [2023-08-30 09:49:26,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:26,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1321 transitions. [2023-08-30 09:49:26,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 146.77777777777777) internal successors, (1321), 9 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:26,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:26,533 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:26,533 INFO L175 Difference]: Start difference. First operand has 111 places, 126 transitions, 1078 flow. Second operand 9 states and 1321 transitions. [2023-08-30 09:49:26,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 294 transitions, 2331 flow [2023-08-30 09:49:26,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 294 transitions, 2245 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:26,699 INFO L231 Difference]: Finished difference. Result has 119 places, 130 transitions, 1191 flow [2023-08-30 09:49:26,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1191, PETRI_PLACES=119, PETRI_TRANSITIONS=130} [2023-08-30 09:49:26,699 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2023-08-30 09:49:26,700 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 130 transitions, 1191 flow [2023-08-30 09:49:26,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:26,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:26,700 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:26,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 09:49:26,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:26,906 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:26,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:26,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1296897089, now seen corresponding path program 2 times [2023-08-30 09:49:26,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:26,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335985211] [2023-08-30 09:49:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:26,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:27,005 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 09:49:27,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:27,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335985211] [2023-08-30 09:49:27,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335985211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:27,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:27,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:49:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791439572] [2023-08-30 09:49:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:27,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:27,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:27,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:27,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 283 [2023-08-30 09:49:27,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 130 transitions, 1191 flow. Second operand has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:27,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:27,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 283 [2023-08-30 09:49:27,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:28,274 INFO L130 PetriNetUnfolder]: 5756/10225 cut-off events. [2023-08-30 09:49:28,274 INFO L131 PetriNetUnfolder]: For 40202/40270 co-relation queries the response was YES. [2023-08-30 09:49:28,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38112 conditions, 10225 events. 5756/10225 cut-off events. For 40202/40270 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 74309 event pairs, 1383 based on Foata normal form. 124/9569 useless extension candidates. Maximal degree in co-relation 38072. Up to 7032 conditions per place. [2023-08-30 09:49:28,352 INFO L137 encePairwiseOnDemand]: 270/283 looper letters, 253 selfloop transitions, 44 changer transitions 0/304 dead transitions. [2023-08-30 09:49:28,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 304 transitions, 2503 flow [2023-08-30 09:49:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:49:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:49:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1701 transitions. [2023-08-30 09:49:28,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008833922261484 [2023-08-30 09:49:28,357 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1701 transitions. [2023-08-30 09:49:28,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1701 transitions. [2023-08-30 09:49:28,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:28,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1701 transitions. [2023-08-30 09:49:28,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.75) internal successors, (1701), 12 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:28,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 283.0) internal successors, (3679), 13 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:28,366 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 283.0) internal successors, (3679), 13 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:28,367 INFO L175 Difference]: Start difference. First operand has 119 places, 130 transitions, 1191 flow. Second operand 12 states and 1701 transitions. [2023-08-30 09:49:28,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 304 transitions, 2503 flow [2023-08-30 09:49:28,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 304 transitions, 2424 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-30 09:49:28,531 INFO L231 Difference]: Finished difference. Result has 127 places, 139 transitions, 1376 flow [2023-08-30 09:49:28,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1376, PETRI_PLACES=127, PETRI_TRANSITIONS=139} [2023-08-30 09:49:28,532 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2023-08-30 09:49:28,532 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 139 transitions, 1376 flow [2023-08-30 09:49:28,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:28,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:28,533 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:28,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 09:49:28,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:28,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:28,534 INFO L85 PathProgramCache]: Analyzing trace with hash 290141895, now seen corresponding path program 1 times [2023-08-30 09:49:28,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:28,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453357564] [2023-08-30 09:49:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:28,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:28,616 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 09:49:28,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:28,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453357564] [2023-08-30 09:49:28,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453357564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:28,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:28,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:49:28,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597051290] [2023-08-30 09:49:28,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:28,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:28,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:28,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:28,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:28,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 283 [2023-08-30 09:49:28,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 139 transitions, 1376 flow. Second operand has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:28,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:28,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 283 [2023-08-30 09:49:28,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:29,761 INFO L130 PetriNetUnfolder]: 5451/9600 cut-off events. [2023-08-30 09:49:29,761 INFO L131 PetriNetUnfolder]: For 43325/43393 co-relation queries the response was YES. [2023-08-30 09:49:29,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36008 conditions, 9600 events. 5451/9600 cut-off events. For 43325/43393 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 68392 event pairs, 991 based on Foata normal form. 144/9050 useless extension candidates. Maximal degree in co-relation 35965. Up to 5883 conditions per place. [2023-08-30 09:49:29,803 INFO L137 encePairwiseOnDemand]: 270/283 looper letters, 239 selfloop transitions, 59 changer transitions 4/309 dead transitions. [2023-08-30 09:49:29,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 309 transitions, 2519 flow [2023-08-30 09:49:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 09:49:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 09:49:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1963 transitions. [2023-08-30 09:49:29,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49545683997980816 [2023-08-30 09:49:29,806 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1963 transitions. [2023-08-30 09:49:29,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1963 transitions. [2023-08-30 09:49:29,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:29,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1963 transitions. [2023-08-30 09:49:29,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.21428571428572) internal successors, (1963), 14 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:29,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 283.0) internal successors, (4245), 15 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:29,814 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 283.0) internal successors, (4245), 15 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:29,814 INFO L175 Difference]: Start difference. First operand has 127 places, 139 transitions, 1376 flow. Second operand 14 states and 1963 transitions. [2023-08-30 09:49:29,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 309 transitions, 2519 flow [2023-08-30 09:49:29,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 309 transitions, 2301 flow, removed 28 selfloop flow, removed 14 redundant places. [2023-08-30 09:49:29,962 INFO L231 Difference]: Finished difference. Result has 126 places, 133 transitions, 1175 flow [2023-08-30 09:49:29,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1175, PETRI_PLACES=126, PETRI_TRANSITIONS=133} [2023-08-30 09:49:29,963 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2023-08-30 09:49:29,963 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 133 transitions, 1175 flow [2023-08-30 09:49:29,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:29,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:29,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:29,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 09:49:29,964 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:29,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:29,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1785208530, now seen corresponding path program 1 times [2023-08-30 09:49:29,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:29,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897041898] [2023-08-30 09:49:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:29,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:30,043 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 09:49:30,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:30,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897041898] [2023-08-30 09:49:30,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897041898] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:30,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:30,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:49:30,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439348798] [2023-08-30 09:49:30,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:30,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:30,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:30,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:30,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:30,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 283 [2023-08-30 09:49:30,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 133 transitions, 1175 flow. Second operand has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:30,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:30,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 283 [2023-08-30 09:49:30,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:31,113 INFO L130 PetriNetUnfolder]: 6167/10896 cut-off events. [2023-08-30 09:49:31,114 INFO L131 PetriNetUnfolder]: For 35870/35870 co-relation queries the response was YES. [2023-08-30 09:49:31,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39270 conditions, 10896 events. 6167/10896 cut-off events. For 35870/35870 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 79051 event pairs, 1435 based on Foata normal form. 116/10213 useless extension candidates. Maximal degree in co-relation 39232. Up to 7376 conditions per place. [2023-08-30 09:49:31,168 INFO L137 encePairwiseOnDemand]: 270/283 looper letters, 252 selfloop transitions, 42 changer transitions 2/303 dead transitions. [2023-08-30 09:49:31,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 303 transitions, 2593 flow [2023-08-30 09:49:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:49:31,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:49:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1304 transitions. [2023-08-30 09:49:31,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119748723989007 [2023-08-30 09:49:31,170 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1304 transitions. [2023-08-30 09:49:31,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1304 transitions. [2023-08-30 09:49:31,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:31,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1304 transitions. [2023-08-30 09:49:31,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 144.88888888888889) internal successors, (1304), 9 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:31,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:31,177 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:31,177 INFO L175 Difference]: Start difference. First operand has 126 places, 133 transitions, 1175 flow. Second operand 9 states and 1304 transitions. [2023-08-30 09:49:31,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 303 transitions, 2593 flow [2023-08-30 09:49:31,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 303 transitions, 2517 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-30 09:49:31,345 INFO L231 Difference]: Finished difference. Result has 130 places, 154 transitions, 1483 flow [2023-08-30 09:49:31,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1483, PETRI_PLACES=130, PETRI_TRANSITIONS=154} [2023-08-30 09:49:31,345 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2023-08-30 09:49:31,345 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 154 transitions, 1483 flow [2023-08-30 09:49:31,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:31,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:31,346 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:31,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 09:49:31,346 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:31,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:31,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1796858717, now seen corresponding path program 1 times [2023-08-30 09:49:31,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091732325] [2023-08-30 09:49:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:31,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:31,393 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 09:49:31,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:31,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091732325] [2023-08-30 09:49:31,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091732325] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:31,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:31,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:31,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469611642] [2023-08-30 09:49:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:31,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:31,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:31,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:31,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 283 [2023-08-30 09:49:31,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 154 transitions, 1483 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:31,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:31,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 283 [2023-08-30 09:49:31,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:32,251 INFO L130 PetriNetUnfolder]: 4768/8968 cut-off events. [2023-08-30 09:49:32,251 INFO L131 PetriNetUnfolder]: For 32793/32793 co-relation queries the response was YES. [2023-08-30 09:49:32,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33401 conditions, 8968 events. 4768/8968 cut-off events. For 32793/32793 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 66010 event pairs, 1319 based on Foata normal form. 518/8402 useless extension candidates. Maximal degree in co-relation 33361. Up to 4758 conditions per place. [2023-08-30 09:49:32,288 INFO L137 encePairwiseOnDemand]: 270/283 looper letters, 204 selfloop transitions, 36 changer transitions 0/245 dead transitions. [2023-08-30 09:49:32,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 245 transitions, 2819 flow [2023-08-30 09:49:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-30 09:49:32,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335689045936396 [2023-08-30 09:49:32,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-30 09:49:32,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-30 09:49:32,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:32,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-30 09:49:32,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 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 09:49:32,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:32,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:32,292 INFO L175 Difference]: Start difference. First operand has 130 places, 154 transitions, 1483 flow. Second operand 3 states and 453 transitions. [2023-08-30 09:49:32,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 245 transitions, 2819 flow [2023-08-30 09:49:32,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 245 transitions, 2717 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-08-30 09:49:32,433 INFO L231 Difference]: Finished difference. Result has 130 places, 174 transitions, 1691 flow [2023-08-30 09:49:32,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1691, PETRI_PLACES=130, PETRI_TRANSITIONS=174} [2023-08-30 09:49:32,433 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2023-08-30 09:49:32,433 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 174 transitions, 1691 flow [2023-08-30 09:49:32,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:32,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:32,434 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:32,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 09:49:32,434 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:32,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash 567733878, now seen corresponding path program 1 times [2023-08-30 09:49:32,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:32,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325088259] [2023-08-30 09:49:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:32,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:32,532 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 09:49:32,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325088259] [2023-08-30 09:49:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325088259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:32,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:32,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:49:32,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043640142] [2023-08-30 09:49:32,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:32,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:32,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:32,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:32,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:32,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 283 [2023-08-30 09:49:32,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 174 transitions, 1691 flow. Second operand has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:32,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:32,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 283 [2023-08-30 09:49:32,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:33,504 INFO L130 PetriNetUnfolder]: 4532/8711 cut-off events. [2023-08-30 09:49:33,504 INFO L131 PetriNetUnfolder]: For 34533/34553 co-relation queries the response was YES. [2023-08-30 09:49:33,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35960 conditions, 8711 events. 4532/8711 cut-off events. For 34533/34553 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 64655 event pairs, 1182 based on Foata normal form. 79/7748 useless extension candidates. Maximal degree in co-relation 35919. Up to 6353 conditions per place. [2023-08-30 09:49:33,552 INFO L137 encePairwiseOnDemand]: 270/283 looper letters, 258 selfloop transitions, 42 changer transitions 1/308 dead transitions. [2023-08-30 09:49:33,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 308 transitions, 2926 flow [2023-08-30 09:49:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:49:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:49:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1414 transitions. [2023-08-30 09:49:33,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49964664310954066 [2023-08-30 09:49:33,554 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1414 transitions. [2023-08-30 09:49:33,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1414 transitions. [2023-08-30 09:49:33,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:33,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1414 transitions. [2023-08-30 09:49:33,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.4) internal successors, (1414), 10 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:33,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 283.0) internal successors, (3113), 11 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:33,558 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 283.0) internal successors, (3113), 11 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:33,559 INFO L175 Difference]: Start difference. First operand has 130 places, 174 transitions, 1691 flow. Second operand 10 states and 1414 transitions. [2023-08-30 09:49:33,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 308 transitions, 2926 flow [2023-08-30 09:49:33,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 308 transitions, 2785 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 09:49:33,723 INFO L231 Difference]: Finished difference. Result has 137 places, 172 transitions, 1706 flow [2023-08-30 09:49:33,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1706, PETRI_PLACES=137, PETRI_TRANSITIONS=172} [2023-08-30 09:49:33,723 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2023-08-30 09:49:33,723 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 172 transitions, 1706 flow [2023-08-30 09:49:33,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:33,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:33,724 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 09:49:33,724 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:33,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:33,725 INFO L85 PathProgramCache]: Analyzing trace with hash -490317175, now seen corresponding path program 1 times [2023-08-30 09:49:33,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:33,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457468785] [2023-08-30 09:49:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:33,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:33,791 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 09:49:33,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:33,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457468785] [2023-08-30 09:49:33,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457468785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:33,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:33,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:49:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639407948] [2023-08-30 09:49:33,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:33,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:33,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:33,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 283 [2023-08-30 09:49:33,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 172 transitions, 1706 flow. Second operand has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:33,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:33,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 283 [2023-08-30 09:49:33,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:34,787 INFO L130 PetriNetUnfolder]: 4416/8489 cut-off events. [2023-08-30 09:49:34,788 INFO L131 PetriNetUnfolder]: For 38522/38535 co-relation queries the response was YES. [2023-08-30 09:49:34,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34510 conditions, 8489 events. 4416/8489 cut-off events. For 38522/38535 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 62827 event pairs, 1039 based on Foata normal form. 99/7566 useless extension candidates. Maximal degree in co-relation 34465. Up to 5601 conditions per place. [2023-08-30 09:49:34,906 INFO L137 encePairwiseOnDemand]: 272/283 looper letters, 271 selfloop transitions, 44 changer transitions 2/324 dead transitions. [2023-08-30 09:49:34,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 324 transitions, 3082 flow [2023-08-30 09:49:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:49:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:49:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1418 transitions. [2023-08-30 09:49:34,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010600706713781 [2023-08-30 09:49:34,909 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1418 transitions. [2023-08-30 09:49:34,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1418 transitions. [2023-08-30 09:49:34,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:34,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1418 transitions. [2023-08-30 09:49:34,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.8) internal successors, (1418), 10 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:34,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 283.0) internal successors, (3113), 11 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:34,914 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 283.0) internal successors, (3113), 11 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:34,914 INFO L175 Difference]: Start difference. First operand has 137 places, 172 transitions, 1706 flow. Second operand 10 states and 1418 transitions. [2023-08-30 09:49:34,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 324 transitions, 3082 flow [2023-08-30 09:49:35,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 324 transitions, 3004 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 09:49:35,066 INFO L231 Difference]: Finished difference. Result has 139 places, 169 transitions, 1667 flow [2023-08-30 09:49:35,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1667, PETRI_PLACES=139, PETRI_TRANSITIONS=169} [2023-08-30 09:49:35,066 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 83 predicate places. [2023-08-30 09:49:35,066 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 169 transitions, 1667 flow [2023-08-30 09:49:35,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:35,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:35,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:35,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 09:49:35,067 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:35,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1636984383, now seen corresponding path program 1 times [2023-08-30 09:49:35,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:35,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572751051] [2023-08-30 09:49:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:35,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:35,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:35,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572751051] [2023-08-30 09:49:35,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572751051] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:35,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412119239] [2023-08-30 09:49:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:35,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:35,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:35,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:35,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 09:49:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:35,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:49:35,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:35,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:35,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412119239] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:35,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:35,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 09:49:35,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885866629] [2023-08-30 09:49:35,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:35,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 09:49:35,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:35,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 09:49:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-30 09:49:35,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 283 [2023-08-30 09:49:35,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 169 transitions, 1667 flow. Second operand has 16 states, 16 states have (on average 123.0625) internal successors, (1969), 16 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:35,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:35,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 283 [2023-08-30 09:49:35,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:37,115 INFO L130 PetriNetUnfolder]: 4571/8936 cut-off events. [2023-08-30 09:49:37,116 INFO L131 PetriNetUnfolder]: For 34204/34221 co-relation queries the response was YES. [2023-08-30 09:49:37,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35769 conditions, 8936 events. 4571/8936 cut-off events. For 34204/34221 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 68029 event pairs, 580 based on Foata normal form. 122/7918 useless extension candidates. Maximal degree in co-relation 35724. Up to 2624 conditions per place. [2023-08-30 09:49:37,178 INFO L137 encePairwiseOnDemand]: 270/283 looper letters, 435 selfloop transitions, 108 changer transitions 11/561 dead transitions. [2023-08-30 09:49:37,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 561 transitions, 4558 flow [2023-08-30 09:49:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 09:49:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 09:49:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4242 transitions. [2023-08-30 09:49:37,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46841872791519434 [2023-08-30 09:49:37,181 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4242 transitions. [2023-08-30 09:49:37,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4242 transitions. [2023-08-30 09:49:37,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:37,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4242 transitions. [2023-08-30 09:49:37,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 132.5625) internal successors, (4242), 32 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:37,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 283.0) internal successors, (9339), 33 states have internal predecessors, (9339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:37,196 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 283.0) internal successors, (9339), 33 states have internal predecessors, (9339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:37,196 INFO L175 Difference]: Start difference. First operand has 139 places, 169 transitions, 1667 flow. Second operand 32 states and 4242 transitions. [2023-08-30 09:49:37,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 561 transitions, 4558 flow [2023-08-30 09:49:37,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 561 transitions, 4516 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 09:49:37,399 INFO L231 Difference]: Finished difference. Result has 168 places, 180 transitions, 1990 flow [2023-08-30 09:49:37,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1990, PETRI_PLACES=168, PETRI_TRANSITIONS=180} [2023-08-30 09:49:37,400 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 112 predicate places. [2023-08-30 09:49:37,400 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 180 transitions, 1990 flow [2023-08-30 09:49:37,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 123.0625) internal successors, (1969), 16 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:37,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:37,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:37,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:37,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:37,605 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:37,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash -875826406, now seen corresponding path program 1 times [2023-08-30 09:49:37,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:37,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343620725] [2023-08-30 09:49:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:37,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:37,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:37,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343620725] [2023-08-30 09:49:37,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343620725] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:37,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627366362] [2023-08-30 09:49:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:37,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:37,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:37,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:37,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 09:49:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:37,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:49:37,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:37,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:37,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627366362] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:37,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:37,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 09:49:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302166531] [2023-08-30 09:49:37,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:37,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:37,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:37,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 283 [2023-08-30 09:49:37,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 180 transitions, 1990 flow. Second operand has 7 states, 7 states have (on average 136.28571428571428) internal successors, (954), 7 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:37,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:37,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 283 [2023-08-30 09:49:37,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:37,941 INFO L130 PetriNetUnfolder]: 479/1113 cut-off events. [2023-08-30 09:49:37,941 INFO L131 PetriNetUnfolder]: For 6828/6828 co-relation queries the response was YES. [2023-08-30 09:49:37,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4999 conditions, 1113 events. 479/1113 cut-off events. For 6828/6828 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6833 event pairs, 54 based on Foata normal form. 156/1267 useless extension candidates. Maximal degree in co-relation 4950. Up to 690 conditions per place. [2023-08-30 09:49:37,945 INFO L137 encePairwiseOnDemand]: 280/283 looper letters, 114 selfloop transitions, 3 changer transitions 24/147 dead transitions. [2023-08-30 09:49:37,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 147 transitions, 1719 flow [2023-08-30 09:49:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:49:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:49:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 723 transitions. [2023-08-30 09:49:37,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5109540636042402 [2023-08-30 09:49:37,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 723 transitions. [2023-08-30 09:49:37,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 723 transitions. [2023-08-30 09:49:37,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:37,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 723 transitions. [2023-08-30 09:49:37,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:37,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:37,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:37,949 INFO L175 Difference]: Start difference. First operand has 168 places, 180 transitions, 1990 flow. Second operand 5 states and 723 transitions. [2023-08-30 09:49:37,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 147 transitions, 1719 flow [2023-08-30 09:49:37,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 147 transitions, 1315 flow, removed 69 selfloop flow, removed 34 redundant places. [2023-08-30 09:49:37,962 INFO L231 Difference]: Finished difference. Result has 96 places, 63 transitions, 436 flow [2023-08-30 09:49:37,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=96, PETRI_TRANSITIONS=63} [2023-08-30 09:49:37,963 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2023-08-30 09:49:37,963 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 63 transitions, 436 flow [2023-08-30 09:49:37,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.28571428571428) internal successors, (954), 7 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:37,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:37,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:37,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:38,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 09:49:38,168 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:38,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:38,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1766118270, now seen corresponding path program 1 times [2023-08-30 09:49:38,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:38,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271920842] [2023-08-30 09:49:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:38,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:38,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:38,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271920842] [2023-08-30 09:49:38,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271920842] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:38,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283081786] [2023-08-30 09:49:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:38,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:38,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:38,285 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:38,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 09:49:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:38,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:49:38,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:38,396 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 09:49:38,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:49:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283081786] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:38,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:49:38,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-30 09:49:38,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006866725] [2023-08-30 09:49:38,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:38,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:49:38,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:38,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:49:38,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 09:49:38,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 283 [2023-08-30 09:49:38,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 63 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:38,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:38,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 283 [2023-08-30 09:49:38,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:38,527 INFO L130 PetriNetUnfolder]: 328/746 cut-off events. [2023-08-30 09:49:38,528 INFO L131 PetriNetUnfolder]: For 2540/2540 co-relation queries the response was YES. [2023-08-30 09:49:38,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2923 conditions, 746 events. 328/746 cut-off events. For 2540/2540 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4073 event pairs, 208 based on Foata normal form. 9/750 useless extension candidates. Maximal degree in co-relation 2889. Up to 498 conditions per place. [2023-08-30 09:49:38,530 INFO L137 encePairwiseOnDemand]: 276/283 looper letters, 46 selfloop transitions, 10 changer transitions 11/73 dead transitions. [2023-08-30 09:49:38,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 73 transitions, 620 flow [2023-08-30 09:49:38,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:49:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:49:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2023-08-30 09:49:38,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823321554770318 [2023-08-30 09:49:38,531 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2023-08-30 09:49:38,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2023-08-30 09:49:38,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:38,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2023-08-30 09:49:38,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:38,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:38,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:38,533 INFO L175 Difference]: Start difference. First operand has 96 places, 63 transitions, 436 flow. Second operand 4 states and 546 transitions. [2023-08-30 09:49:38,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 73 transitions, 620 flow [2023-08-30 09:49:38,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 73 transitions, 561 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-08-30 09:49:38,537 INFO L231 Difference]: Finished difference. Result has 85 places, 53 transitions, 344 flow [2023-08-30 09:49:38,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=85, PETRI_TRANSITIONS=53} [2023-08-30 09:49:38,537 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2023-08-30 09:49:38,537 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 53 transitions, 344 flow [2023-08-30 09:49:38,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:38,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:38,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:38,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:38,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 09:49:38,741 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:38,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1697877755, now seen corresponding path program 1 times [2023-08-30 09:49:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:38,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054230513] [2023-08-30 09:49:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:38,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:38,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:38,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054230513] [2023-08-30 09:49:38,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054230513] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:38,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784851682] [2023-08-30 09:49:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:38,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:38,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:38,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:38,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 09:49:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:38,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:49:38,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:38,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:39,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784851682] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:39,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:39,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 09:49:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244423187] [2023-08-30 09:49:39,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:39,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 09:49:39,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:39,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 09:49:39,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-30 09:49:39,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 283 [2023-08-30 09:49:39,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 53 transitions, 344 flow. Second operand has 16 states, 16 states have (on average 120.0625) internal successors, (1921), 16 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:39,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:39,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 283 [2023-08-30 09:49:39,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:39,401 INFO L130 PetriNetUnfolder]: 224/532 cut-off events. [2023-08-30 09:49:39,401 INFO L131 PetriNetUnfolder]: For 1592/1592 co-relation queries the response was YES. [2023-08-30 09:49:39,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 532 events. 224/532 cut-off events. For 1592/1592 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2659 event pairs, 12 based on Foata normal form. 18/545 useless extension candidates. Maximal degree in co-relation 1954. Up to 124 conditions per place. [2023-08-30 09:49:39,404 INFO L137 encePairwiseOnDemand]: 272/283 looper letters, 76 selfloop transitions, 26 changer transitions 1/109 dead transitions. [2023-08-30 09:49:39,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 109 transitions, 843 flow [2023-08-30 09:49:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 09:49:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 09:49:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2192 transitions. [2023-08-30 09:49:39,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43031016882606987 [2023-08-30 09:49:39,407 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2192 transitions. [2023-08-30 09:49:39,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2192 transitions. [2023-08-30 09:49:39,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:39,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2192 transitions. [2023-08-30 09:49:39,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 121.77777777777777) internal successors, (2192), 18 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:39,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 283.0) internal successors, (5377), 19 states have internal predecessors, (5377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:39,416 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 283.0) internal successors, (5377), 19 states have internal predecessors, (5377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:39,416 INFO L175 Difference]: Start difference. First operand has 85 places, 53 transitions, 344 flow. Second operand 18 states and 2192 transitions. [2023-08-30 09:49:39,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 109 transitions, 843 flow [2023-08-30 09:49:39,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 109 transitions, 777 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-08-30 09:49:39,420 INFO L231 Difference]: Finished difference. Result has 89 places, 54 transitions, 338 flow [2023-08-30 09:49:39,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=338, PETRI_PLACES=89, PETRI_TRANSITIONS=54} [2023-08-30 09:49:39,421 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2023-08-30 09:49:39,422 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 54 transitions, 338 flow [2023-08-30 09:49:39,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 120.0625) internal successors, (1921), 16 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:39,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:39,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:39,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:39,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:39,630 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:39,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash 796935219, now seen corresponding path program 1 times [2023-08-30 09:49:39,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:39,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888816012] [2023-08-30 09:49:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:39,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:39,706 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 09:49:39,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:39,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888816012] [2023-08-30 09:49:39,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888816012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:39,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:39,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:49:39,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573074258] [2023-08-30 09:49:39,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:39,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:49:39,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:39,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:49:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:49:39,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 283 [2023-08-30 09:49:39,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 54 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:39,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:39,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 283 [2023-08-30 09:49:39,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:39,969 INFO L130 PetriNetUnfolder]: 215/528 cut-off events. [2023-08-30 09:49:39,969 INFO L131 PetriNetUnfolder]: For 911/911 co-relation queries the response was YES. [2023-08-30 09:49:39,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1950 conditions, 528 events. 215/528 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2718 event pairs, 38 based on Foata normal form. 9/532 useless extension candidates. Maximal degree in co-relation 1927. Up to 334 conditions per place. [2023-08-30 09:49:39,971 INFO L137 encePairwiseOnDemand]: 273/283 looper letters, 56 selfloop transitions, 9 changer transitions 8/79 dead transitions. [2023-08-30 09:49:39,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 79 transitions, 609 flow [2023-08-30 09:49:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:49:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:49:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2023-08-30 09:49:39,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479780133490381 [2023-08-30 09:49:39,972 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2023-08-30 09:49:39,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2023-08-30 09:49:39,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:39,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2023-08-30 09:49:39,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:39,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:39,975 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:39,975 INFO L175 Difference]: Start difference. First operand has 89 places, 54 transitions, 338 flow. Second operand 9 states and 1141 transitions. [2023-08-30 09:49:39,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 79 transitions, 609 flow [2023-08-30 09:49:39,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 79 transitions, 558 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-08-30 09:49:39,977 INFO L231 Difference]: Finished difference. Result has 83 places, 51 transitions, 287 flow [2023-08-30 09:49:39,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=287, PETRI_PLACES=83, PETRI_TRANSITIONS=51} [2023-08-30 09:49:39,978 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2023-08-30 09:49:39,978 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 51 transitions, 287 flow [2023-08-30 09:49:39,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:39,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:39,978 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:39,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 09:49:39,979 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:39,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1697877683, now seen corresponding path program 2 times [2023-08-30 09:49:39,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:39,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097916870] [2023-08-30 09:49:39,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:39,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:40,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:40,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097916870] [2023-08-30 09:49:40,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097916870] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:40,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268903580] [2023-08-30 09:49:40,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:49:40,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:40,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:40,070 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:40,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 09:49:40,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:49:40,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:40,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:49:40,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:40,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:40,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268903580] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:40,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:40,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 09:49:40,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284407225] [2023-08-30 09:49:40,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:40,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 09:49:40,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:40,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 09:49:40,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-30 09:49:40,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 283 [2023-08-30 09:49:40,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 51 transitions, 287 flow. Second operand has 16 states, 16 states have (on average 123.0625) internal successors, (1969), 16 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:40,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:40,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 283 [2023-08-30 09:49:40,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:40,643 INFO L130 PetriNetUnfolder]: 183/452 cut-off events. [2023-08-30 09:49:40,643 INFO L131 PetriNetUnfolder]: For 637/637 co-relation queries the response was YES. [2023-08-30 09:49:40,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 452 events. 183/452 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2180 event pairs, 18 based on Foata normal form. 18/465 useless extension candidates. Maximal degree in co-relation 1539. Up to 106 conditions per place. [2023-08-30 09:49:40,644 INFO L137 encePairwiseOnDemand]: 273/283 looper letters, 28 selfloop transitions, 7 changer transitions 53/94 dead transitions. [2023-08-30 09:49:40,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 94 transitions, 682 flow [2023-08-30 09:49:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 09:49:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 09:49:40,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1875 transitions. [2023-08-30 09:49:40,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4416961130742049 [2023-08-30 09:49:40,647 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1875 transitions. [2023-08-30 09:49:40,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1875 transitions. [2023-08-30 09:49:40,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:40,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1875 transitions. [2023-08-30 09:49:40,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:40,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 283.0) internal successors, (4528), 16 states have internal predecessors, (4528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:40,654 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 283.0) internal successors, (4528), 16 states have internal predecessors, (4528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:40,654 INFO L175 Difference]: Start difference. First operand has 83 places, 51 transitions, 287 flow. Second operand 15 states and 1875 transitions. [2023-08-30 09:49:40,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 94 transitions, 682 flow [2023-08-30 09:49:40,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 648 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-30 09:49:40,657 INFO L231 Difference]: Finished difference. Result has 80 places, 29 transitions, 146 flow [2023-08-30 09:49:40,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=146, PETRI_PLACES=80, PETRI_TRANSITIONS=29} [2023-08-30 09:49:40,657 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2023-08-30 09:49:40,657 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 29 transitions, 146 flow [2023-08-30 09:49:40,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 123.0625) internal successors, (1969), 16 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:40,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:40,658 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:40,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:40,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 09:49:40,863 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:49:40,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:40,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1757040449, now seen corresponding path program 2 times [2023-08-30 09:49:40,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:40,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639020634] [2023-08-30 09:49:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:40,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:40,957 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 09:49:40,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:40,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639020634] [2023-08-30 09:49:40,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639020634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:40,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:40,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:49:40,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430337897] [2023-08-30 09:49:40,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:40,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:49:40,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:49:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:49:41,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 283 [2023-08-30 09:49:41,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 29 transitions, 146 flow. Second operand has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:41,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:41,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 283 [2023-08-30 09:49:41,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:41,144 INFO L130 PetriNetUnfolder]: 35/124 cut-off events. [2023-08-30 09:49:41,144 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2023-08-30 09:49:41,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 124 events. 35/124 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 309 event pairs, 9 based on Foata normal form. 9/132 useless extension candidates. Maximal degree in co-relation 385. Up to 35 conditions per place. [2023-08-30 09:49:41,145 INFO L137 encePairwiseOnDemand]: 274/283 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-08-30 09:49:41,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 41 transitions, 275 flow [2023-08-30 09:49:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:49:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:49:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1113 transitions. [2023-08-30 09:49:41,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369846878680801 [2023-08-30 09:49:41,146 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1113 transitions. [2023-08-30 09:49:41,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1113 transitions. [2023-08-30 09:49:41,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:41,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1113 transitions. [2023-08-30 09:49:41,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 123.66666666666667) internal successors, (1113), 9 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:41,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:41,149 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:41,149 INFO L175 Difference]: Start difference. First operand has 80 places, 29 transitions, 146 flow. Second operand 9 states and 1113 transitions. [2023-08-30 09:49:41,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 41 transitions, 275 flow [2023-08-30 09:49:41,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 240 flow, removed 1 selfloop flow, removed 16 redundant places. [2023-08-30 09:49:41,151 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-30 09:49:41,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-30 09:49:41,151 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-08-30 09:49:41,152 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-30 09:49:41,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:41,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 09:49:41,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 09:49:41,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 09:49:41,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 09:49:41,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 09:49:41,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 09:49:41,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 09:49:41,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 09:49:41,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 09:49:41,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 09:49:41,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 09:49:41,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 09:49:41,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 09:49:41,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 09:49:41,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 09:49:41,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 09:49:41,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 09:49:41,155 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:41,155 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 09:49:41,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:41,181 INFO L130 PetriNetUnfolder]: 31/259 cut-off events. [2023-08-30 09:49:41,182 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:49:41,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 31/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 718 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-30 09:49:41,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:41,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:41,184 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:49:41,184 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:41,185 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:41,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-30 09:49:41,205 INFO L130 PetriNetUnfolder]: 31/259 cut-off events. [2023-08-30 09:49:41,205 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:49:41,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 31/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 718 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-30 09:49:41,212 INFO L119 LiptonReduction]: Number of co-enabled transitions 10008 [2023-08-30 09:49:43,969 INFO L134 LiptonReduction]: Checked pairs total: 24269 [2023-08-30 09:49:43,969 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-30 09:49:43,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 09:49:43,970 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;@24cf6ffa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:49:43,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 09:49:43,976 INFO L130 PetriNetUnfolder]: 12/64 cut-off events. [2023-08-30 09:49:43,976 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 09:49:43,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:43,976 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 09:49:43,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 09:49:43,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash -991069773, now seen corresponding path program 1 times [2023-08-30 09:49:43,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:43,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540399527] [2023-08-30 09:49:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:49:43,999 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 09:49:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:49:44,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 09:49:44,021 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 09:49:44,022 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 09:49:44,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 09:49:44,022 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 09:49:44,023 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 09:49:44,023 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 09:49:44,023 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 09:49:44,048 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 09:49:44,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-08-30 09:49:44,088 INFO L130 PetriNetUnfolder]: 50/404 cut-off events. [2023-08-30 09:49:44,089 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 09:49:44,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 404 events. 50/404 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1293 event pairs, 1 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-08-30 09:49:44,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 197 transitions, 424 flow [2023-08-30 09:49:44,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 197 transitions, 424 flow [2023-08-30 09:49:44,097 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:49:44,097 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 197 transitions, 424 flow [2023-08-30 09:49:44,097 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 197 transitions, 424 flow [2023-08-30 09:49:44,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-08-30 09:49:44,136 INFO L130 PetriNetUnfolder]: 50/404 cut-off events. [2023-08-30 09:49:44,136 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 09:49:44,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 404 events. 50/404 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1293 event pairs, 1 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-08-30 09:49:44,149 INFO L119 LiptonReduction]: Number of co-enabled transitions 19224 [2023-08-30 09:49:46,874 INFO L134 LiptonReduction]: Checked pairs total: 50756 [2023-08-30 09:49:46,874 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-30 09:49:46,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:49:46,876 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;@24cf6ffa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:49:46,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 09:49:46,878 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-08-30 09:49:46,878 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:46,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:46,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:49:46,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:49:46,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1328981732, now seen corresponding path program 1 times [2023-08-30 09:49:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:46,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554804662] [2023-08-30 09:49:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:46,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:46,906 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 09:49:46,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554804662] [2023-08-30 09:49:46,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554804662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:46,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:46,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:49:46,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430928834] [2023-08-30 09:49:46,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:46,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:46,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:46,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:46,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 346 [2023-08-30 09:49:46,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 91 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:46,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:46,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 346 [2023-08-30 09:49:46,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:54,162 INFO L130 PetriNetUnfolder]: 107413/153807 cut-off events. [2023-08-30 09:49:54,163 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2023-08-30 09:49:54,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304386 conditions, 153807 events. 107413/153807 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 3958. Compared 1154956 event pairs, 69876 based on Foata normal form. 16992/120179 useless extension candidates. Maximal degree in co-relation 26679. Up to 148930 conditions per place. [2023-08-30 09:49:54,734 INFO L137 encePairwiseOnDemand]: 320/346 looper letters, 74 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-30 09:49:54,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 352 flow [2023-08-30 09:49:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-08-30 09:49:54,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5732177263969171 [2023-08-30 09:49:54,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-08-30 09:49:54,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-08-30 09:49:54,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:54,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-08-30 09:49:54,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:54,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:54,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:54,737 INFO L175 Difference]: Start difference. First operand has 74 places, 91 transitions, 212 flow. Second operand 3 states and 595 transitions. [2023-08-30 09:49:54,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 352 flow [2023-08-30 09:49:54,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:49:54,739 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 186 flow [2023-08-30 09:49:54,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-30 09:49:54,740 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-30 09:49:54,740 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 186 flow [2023-08-30 09:49:54,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:54,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:54,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:54,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 09:49:54,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:49:54,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:54,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1554734569, now seen corresponding path program 1 times [2023-08-30 09:49:54,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:54,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524116031] [2023-08-30 09:49:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:54,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:54,767 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 09:49:54,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:54,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524116031] [2023-08-30 09:49:54,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524116031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:54,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:54,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:49:54,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13159133] [2023-08-30 09:49:54,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:54,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:54,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:54,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:54,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 346 [2023-08-30 09:49:54,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:54,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:54,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 346 [2023-08-30 09:49:54,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:50:02,530 INFO L130 PetriNetUnfolder]: 108767/155419 cut-off events. [2023-08-30 09:50:02,530 INFO L131 PetriNetUnfolder]: For 8555/8555 co-relation queries the response was YES. [2023-08-30 09:50:02,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319873 conditions, 155419 events. 108767/155419 cut-off events. For 8555/8555 co-relation queries the response was YES. Maximal size of possible extension queue 4153. Compared 1160929 event pairs, 51493 based on Foata normal form. 0/109435 useless extension candidates. Maximal degree in co-relation 319779. Up to 147969 conditions per place. [2023-08-30 09:50:03,126 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 85 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2023-08-30 09:50:03,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 439 flow [2023-08-30 09:50:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:50:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:50:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-30 09:50:03,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529865125240848 [2023-08-30 09:50:03,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-30 09:50:03,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-30 09:50:03,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:50:03,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-30 09:50:03,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:03,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:03,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:03,130 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 186 flow. Second operand 3 states and 574 transitions. [2023-08-30 09:50:03,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 439 flow [2023-08-30 09:50:03,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:50:03,141 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 222 flow [2023-08-30 09:50:03,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=184, 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=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-30 09:50:03,141 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-30 09:50:03,141 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 222 flow [2023-08-30 09:50:03,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:03,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:50:03,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:50:03,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 09:50:03,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:50:03,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:50:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash -119059133, now seen corresponding path program 1 times [2023-08-30 09:50:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:50:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754602828] [2023-08-30 09:50:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:50:03,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:50:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:50:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:50:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:50:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754602828] [2023-08-30 09:50:03,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754602828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:50:03,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:50:03,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:50:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996291101] [2023-08-30 09:50:03,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:50:03,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:50:03,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:50:03,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:50:03,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:50:03,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 346 [2023-08-30 09:50:03,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:03,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:50:03,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 346 [2023-08-30 09:50:03,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:50:10,537 INFO L130 PetriNetUnfolder]: 98427/141810 cut-off events. [2023-08-30 09:50:10,537 INFO L131 PetriNetUnfolder]: For 18987/18990 co-relation queries the response was YES. [2023-08-30 09:50:10,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311588 conditions, 141810 events. 98427/141810 cut-off events. For 18987/18990 co-relation queries the response was YES. Maximal size of possible extension queue 3733. Compared 1060415 event pairs, 97174 based on Foata normal form. 0/110783 useless extension candidates. Maximal degree in co-relation 190271. Up to 137012 conditions per place. [2023-08-30 09:50:11,178 INFO L137 encePairwiseOnDemand]: 344/346 looper letters, 62 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-08-30 09:50:11,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 344 flow [2023-08-30 09:50:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:50:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:50:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-08-30 09:50:11,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298651252408478 [2023-08-30 09:50:11,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-08-30 09:50:11,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-08-30 09:50:11,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:50:11,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-08-30 09:50:11,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:11,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:11,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:11,182 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 222 flow. Second operand 3 states and 550 transitions. [2023-08-30 09:50:11,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 344 flow [2023-08-30 09:50:11,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:50:11,193 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 216 flow [2023-08-30 09:50:11,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, 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=216, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-08-30 09:50:11,194 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-30 09:50:11,194 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 216 flow [2023-08-30 09:50:11,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:11,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:50:11,194 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:50:11,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 09:50:11,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:50:11,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:50:11,195 INFO L85 PathProgramCache]: Analyzing trace with hash -119059100, now seen corresponding path program 1 times [2023-08-30 09:50:11,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:50:11,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529559942] [2023-08-30 09:50:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:50:11,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:50:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:50:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:50:11,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:50:11,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529559942] [2023-08-30 09:50:11,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529559942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:50:11,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:50:11,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:50:11,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757331615] [2023-08-30 09:50:11,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:50:11,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:50:11,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:50:11,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:50:11,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:50:11,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 346 [2023-08-30 09:50:11,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:11,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:50:11,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 346 [2023-08-30 09:50:11,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:50:17,279 INFO L130 PetriNetUnfolder]: 90371/127762 cut-off events. [2023-08-30 09:50:17,279 INFO L131 PetriNetUnfolder]: For 14293/14293 co-relation queries the response was YES. [2023-08-30 09:50:17,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281741 conditions, 127762 events. 90371/127762 cut-off events. For 14293/14293 co-relation queries the response was YES. Maximal size of possible extension queue 3535. Compared 960075 event pairs, 12937 based on Foata normal form. 0/101611 useless extension candidates. Maximal degree in co-relation 281728. Up to 107210 conditions per place. [2023-08-30 09:50:17,820 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 100 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2023-08-30 09:50:17,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 114 transitions, 524 flow [2023-08-30 09:50:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:50:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:50:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-08-30 09:50:17,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645472061657033 [2023-08-30 09:50:17,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-08-30 09:50:17,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-08-30 09:50:17,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:50:17,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-08-30 09:50:17,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:17,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:17,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:17,824 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 216 flow. Second operand 3 states and 586 transitions. [2023-08-30 09:50:17,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 114 transitions, 524 flow [2023-08-30 09:50:17,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 114 transitions, 523 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:50:17,831 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 227 flow [2023-08-30 09:50:17,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2023-08-30 09:50:17,831 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-08-30 09:50:17,832 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 227 flow [2023-08-30 09:50:17,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:17,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:50:17,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:50:17,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 09:50:17,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:50:17,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:50:17,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1063383937, now seen corresponding path program 1 times [2023-08-30 09:50:17,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:50:17,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735846270] [2023-08-30 09:50:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:50:17,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:50:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:50:17,866 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 09:50:17,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:50:17,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735846270] [2023-08-30 09:50:17,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735846270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:50:17,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:50:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:50:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726626768] [2023-08-30 09:50:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:50:17,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:50:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:50:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:50:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:50:17,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2023-08-30 09:50:17,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:17,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:50:17,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2023-08-30 09:50:17,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:50:27,812 INFO L130 PetriNetUnfolder]: 130682/189415 cut-off events. [2023-08-30 09:50:27,813 INFO L131 PetriNetUnfolder]: For 57217/57217 co-relation queries the response was YES. [2023-08-30 09:50:28,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427532 conditions, 189415 events. 130682/189415 cut-off events. For 57217/57217 co-relation queries the response was YES. Maximal size of possible extension queue 5380. Compared 1494977 event pairs, 28336 based on Foata normal form. 0/157097 useless extension candidates. Maximal degree in co-relation 427517. Up to 106388 conditions per place. [2023-08-30 09:50:28,712 INFO L137 encePairwiseOnDemand]: 325/346 looper letters, 215 selfloop transitions, 30 changer transitions 0/253 dead transitions. [2023-08-30 09:50:28,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 253 transitions, 1269 flow [2023-08-30 09:50:28,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:50:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:50:28,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1341 transitions. [2023-08-30 09:50:28,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536746490503716 [2023-08-30 09:50:28,714 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1341 transitions. [2023-08-30 09:50:28,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1341 transitions. [2023-08-30 09:50:28,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:50:28,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1341 transitions. [2023-08-30 09:50:28,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:28,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:28,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:28,718 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 227 flow. Second operand 7 states and 1341 transitions. [2023-08-30 09:50:28,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 253 transitions, 1269 flow [2023-08-30 09:50:28,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 253 transitions, 1251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:50:28,730 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 485 flow [2023-08-30 09:50:28,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=485, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2023-08-30 09:50:28,731 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-08-30 09:50:28,731 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 485 flow [2023-08-30 09:50:28,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:28,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:50:28,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:50:28,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 09:50:28,731 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:50:28,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:50:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1063383961, now seen corresponding path program 1 times [2023-08-30 09:50:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:50:28,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038166718] [2023-08-30 09:50:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:50:28,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:50:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:50:28,764 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 09:50:28,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:50:28,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038166718] [2023-08-30 09:50:28,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038166718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:50:28,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:50:28,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:50:28,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655477848] [2023-08-30 09:50:28,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:50:28,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:50:28,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:50:28,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:50:28,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:50:28,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2023-08-30 09:50:28,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 99 transitions, 485 flow. Second operand has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:28,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:50:28,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2023-08-30 09:50:28,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:50:41,152 INFO L130 PetriNetUnfolder]: 135779/201202 cut-off events. [2023-08-30 09:50:41,152 INFO L131 PetriNetUnfolder]: For 195028/195875 co-relation queries the response was YES. [2023-08-30 09:50:41,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563726 conditions, 201202 events. 135779/201202 cut-off events. For 195028/195875 co-relation queries the response was YES. Maximal size of possible extension queue 6000. Compared 1670988 event pairs, 26830 based on Foata normal form. 7907/200811 useless extension candidates. Maximal degree in co-relation 563705. Up to 122085 conditions per place. [2023-08-30 09:50:42,440 INFO L137 encePairwiseOnDemand]: 325/346 looper letters, 235 selfloop transitions, 42 changer transitions 0/285 dead transitions. [2023-08-30 09:50:42,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 285 transitions, 1773 flow [2023-08-30 09:50:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:50:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:50:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1341 transitions. [2023-08-30 09:50:42,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536746490503716 [2023-08-30 09:50:42,442 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1341 transitions. [2023-08-30 09:50:42,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1341 transitions. [2023-08-30 09:50:42,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:50:42,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1341 transitions. [2023-08-30 09:50:42,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:42,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:42,445 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:42,445 INFO L175 Difference]: Start difference. First operand has 90 places, 99 transitions, 485 flow. Second operand 7 states and 1341 transitions. [2023-08-30 09:50:42,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 285 transitions, 1773 flow [2023-08-30 09:50:43,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 285 transitions, 1767 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:50:43,083 INFO L231 Difference]: Finished difference. Result has 99 places, 132 transitions, 961 flow [2023-08-30 09:50:43,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=961, PETRI_PLACES=99, PETRI_TRANSITIONS=132} [2023-08-30 09:50:43,084 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2023-08-30 09:50:43,084 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 132 transitions, 961 flow [2023-08-30 09:50:43,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:43,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:50:43,084 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:50:43,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 09:50:43,084 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:50:43,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:50:43,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1951622651, now seen corresponding path program 1 times [2023-08-30 09:50:43,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:50:43,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743221451] [2023-08-30 09:50:43,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:50:43,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:50:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:50:43,143 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 09:50:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:50:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743221451] [2023-08-30 09:50:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743221451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:50:43,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:50:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:50:43,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471061804] [2023-08-30 09:50:43,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:50:43,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:50:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:50:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:50:43,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:50:43,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2023-08-30 09:50:43,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 132 transitions, 961 flow. Second operand has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:43,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:50:43,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2023-08-30 09:50:43,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:51:00,120 INFO L130 PetriNetUnfolder]: 162926/239558 cut-off events. [2023-08-30 09:51:00,120 INFO L131 PetriNetUnfolder]: For 532938/532938 co-relation queries the response was YES. [2023-08-30 09:51:00,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787381 conditions, 239558 events. 162926/239558 cut-off events. For 532938/532938 co-relation queries the response was YES. Maximal size of possible extension queue 7199. Compared 1995023 event pairs, 37791 based on Foata normal form. 4225/234256 useless extension candidates. Maximal degree in co-relation 787355. Up to 153553 conditions per place. [2023-08-30 09:51:01,812 INFO L137 encePairwiseOnDemand]: 326/346 looper letters, 283 selfloop transitions, 59 changer transitions 0/350 dead transitions. [2023-08-30 09:51:01,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 350 transitions, 2845 flow [2023-08-30 09:51:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:51:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:51:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1339 transitions. [2023-08-30 09:51:01,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528488852188275 [2023-08-30 09:51:01,815 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1339 transitions. [2023-08-30 09:51:01,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1339 transitions. [2023-08-30 09:51:01,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:51:01,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1339 transitions. [2023-08-30 09:51:01,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.28571428571428) internal successors, (1339), 7 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:51:01,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:51:01,819 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:51:01,820 INFO L175 Difference]: Start difference. First operand has 99 places, 132 transitions, 961 flow. Second operand 7 states and 1339 transitions. [2023-08-30 09:51:01,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 350 transitions, 2845 flow [2023-08-30 09:51:13,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 350 transitions, 2832 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:51:13,054 INFO L231 Difference]: Finished difference. Result has 108 places, 174 transitions, 1684 flow [2023-08-30 09:51:13,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1684, PETRI_PLACES=108, PETRI_TRANSITIONS=174} [2023-08-30 09:51:13,055 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2023-08-30 09:51:13,055 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 174 transitions, 1684 flow [2023-08-30 09:51:13,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:51:13,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:51:13,055 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:51:13,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 09:51:13,055 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:51:13,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:51:13,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1951622650, now seen corresponding path program 1 times [2023-08-30 09:51:13,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:51:13,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067428761] [2023-08-30 09:51:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:51:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:51:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:51:13,093 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 09:51:13,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:51:13,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067428761] [2023-08-30 09:51:13,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067428761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:51:13,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:51:13,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:51:13,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795229568] [2023-08-30 09:51:13,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:51:13,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:51:13,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:51:13,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:51:13,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:51:13,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2023-08-30 09:51:13,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 174 transitions, 1684 flow. Second operand has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:51:13,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:51:13,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2023-08-30 09:51:13,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:51:33,230 INFO L130 PetriNetUnfolder]: 153679/227301 cut-off events. [2023-08-30 09:51:33,230 INFO L131 PetriNetUnfolder]: For 860125/860125 co-relation queries the response was YES. [2023-08-30 09:51:33,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837847 conditions, 227301 events. 153679/227301 cut-off events. For 860125/860125 co-relation queries the response was YES. Maximal size of possible extension queue 6874. Compared 1904246 event pairs, 37642 based on Foata normal form. 4225/222269 useless extension candidates. Maximal degree in co-relation 837815. Up to 148376 conditions per place. [2023-08-30 09:51:35,028 INFO L137 encePairwiseOnDemand]: 326/346 looper letters, 269 selfloop transitions, 61 changer transitions 0/338 dead transitions. [2023-08-30 09:51:35,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 338 transitions, 3022 flow [2023-08-30 09:51:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:51:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:51:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1339 transitions. [2023-08-30 09:51:35,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528488852188275 [2023-08-30 09:51:35,030 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1339 transitions. [2023-08-30 09:51:35,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1339 transitions. [2023-08-30 09:51:35,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:51:35,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1339 transitions. [2023-08-30 09:51:35,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.28571428571428) internal successors, (1339), 7 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:51:35,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:51:35,033 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:51:35,033 INFO L175 Difference]: Start difference. First operand has 108 places, 174 transitions, 1684 flow. Second operand 7 states and 1339 transitions. [2023-08-30 09:51:35,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 338 transitions, 3022 flow [2023-08-30 09:51:45,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 338 transitions, 2989 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:51:45,746 INFO L231 Difference]: Finished difference. Result has 113 places, 178 transitions, 1787 flow [2023-08-30 09:51:45,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1787, PETRI_PLACES=113, PETRI_TRANSITIONS=178} [2023-08-30 09:51:45,747 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 39 predicate places. [2023-08-30 09:51:45,747 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 178 transitions, 1787 flow [2023-08-30 09:51:45,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:51:45,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:51:45,747 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:51:45,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 09:51:45,748 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:51:45,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:51:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1961035306, now seen corresponding path program 1 times [2023-08-30 09:51:45,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:51:45,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870273996] [2023-08-30 09:51:45,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:51:45,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:51:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:51:45,786 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 09:51:45,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:51:45,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870273996] [2023-08-30 09:51:45,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870273996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:51:45,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:51:45,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:51:45,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271296553] [2023-08-30 09:51:45,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:51:45,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:51:45,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:51:45,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:51:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:51:45,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2023-08-30 09:51:45,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 178 transitions, 1787 flow. Second operand has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:51:45,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:51:45,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2023-08-30 09:51:45,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:52:06,987 INFO L130 PetriNetUnfolder]: 171433/252574 cut-off events. [2023-08-30 09:52:06,988 INFO L131 PetriNetUnfolder]: For 1135371/1135371 co-relation queries the response was YES. [2023-08-30 09:52:07,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960494 conditions, 252574 events. 171433/252574 cut-off events. For 1135371/1135371 co-relation queries the response was YES. Maximal size of possible extension queue 7623. Compared 2120308 event pairs, 46839 based on Foata normal form. 4071/246572 useless extension candidates. Maximal degree in co-relation 960461. Up to 176753 conditions per place. [2023-08-30 09:52:08,952 INFO L137 encePairwiseOnDemand]: 327/346 looper letters, 308 selfloop transitions, 73 changer transitions 0/389 dead transitions. [2023-08-30 09:52:08,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 389 transitions, 4007 flow [2023-08-30 09:52:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:52:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:52:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1320 transitions. [2023-08-30 09:52:08,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450041288191577 [2023-08-30 09:52:08,954 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1320 transitions. [2023-08-30 09:52:08,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1320 transitions. [2023-08-30 09:52:08,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:52:08,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1320 transitions. [2023-08-30 09:52:08,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:08,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:08,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:08,956 INFO L175 Difference]: Start difference. First operand has 113 places, 178 transitions, 1787 flow. Second operand 7 states and 1320 transitions. [2023-08-30 09:52:08,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 389 transitions, 4007 flow [2023-08-30 09:52:20,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 389 transitions, 3990 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:52:20,984 INFO L231 Difference]: Finished difference. Result has 121 places, 221 transitions, 2698 flow [2023-08-30 09:52:20,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2698, PETRI_PLACES=121, PETRI_TRANSITIONS=221} [2023-08-30 09:52:20,985 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 47 predicate places. [2023-08-30 09:52:20,985 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 221 transitions, 2698 flow [2023-08-30 09:52:20,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:20,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:52:20,985 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:52:20,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 09:52:20,986 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:52:20,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:52:20,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1961035305, now seen corresponding path program 1 times [2023-08-30 09:52:20,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:52:20,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414452464] [2023-08-30 09:52:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:20,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:52:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:52:21,030 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 09:52:21,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:52:21,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414452464] [2023-08-30 09:52:21,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414452464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:52:21,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:52:21,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:52:21,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063795931] [2023-08-30 09:52:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:52:21,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:52:21,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:52:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:52:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:52:21,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2023-08-30 09:52:21,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 221 transitions, 2698 flow. Second operand has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:21,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:52:21,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2023-08-30 09:52:21,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:52:43,582 INFO L130 PetriNetUnfolder]: 161090/238284 cut-off events. [2023-08-30 09:52:43,582 INFO L131 PetriNetUnfolder]: For 1392399/1392399 co-relation queries the response was YES. [2023-08-30 09:52:44,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953896 conditions, 238284 events. 161090/238284 cut-off events. For 1392399/1392399 co-relation queries the response was YES. Maximal size of possible extension queue 7152. Compared 1999835 event pairs, 45472 based on Foata normal form. 4071/232641 useless extension candidates. Maximal degree in co-relation 953858. Up to 169342 conditions per place. [2023-08-30 09:52:45,618 INFO L137 encePairwiseOnDemand]: 327/346 looper letters, 296 selfloop transitions, 73 changer transitions 0/377 dead transitions. [2023-08-30 09:52:45,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 377 transitions, 4156 flow [2023-08-30 09:52:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:52:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:52:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1320 transitions. [2023-08-30 09:52:45,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450041288191577 [2023-08-30 09:52:45,620 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1320 transitions. [2023-08-30 09:52:45,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1320 transitions. [2023-08-30 09:52:45,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:52:45,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1320 transitions. [2023-08-30 09:52:45,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:45,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:45,624 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:45,624 INFO L175 Difference]: Start difference. First operand has 121 places, 221 transitions, 2698 flow. Second operand 7 states and 1320 transitions. [2023-08-30 09:52:45,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 377 transitions, 4156 flow [2023-08-30 09:53:16,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 377 transitions, 4101 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 09:53:16,357 INFO L231 Difference]: Finished difference. Result has 126 places, 217 transitions, 2714 flow [2023-08-30 09:53:16,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=2455, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2714, PETRI_PLACES=126, PETRI_TRANSITIONS=217} [2023-08-30 09:53:16,357 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 52 predicate places. [2023-08-30 09:53:16,357 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 217 transitions, 2714 flow [2023-08-30 09:53:16,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:53:16,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:53:16,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:53:16,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 09:53:16,358 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:53:16,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:53:16,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1167171087, now seen corresponding path program 1 times [2023-08-30 09:53:16,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:53:16,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809181417] [2023-08-30 09:53:16,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:53:16,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:53:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:53:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:53:16,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:53:16,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809181417] [2023-08-30 09:53:16,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809181417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:53:16,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606778517] [2023-08-30 09:53:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:53:16,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:53:16,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:53:16,415 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:53:16,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 09:53:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:53:16,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:53:16,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:53:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:53:16,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:53:16,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606778517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:53:16,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:53:16,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-08-30 09:53:16,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546100420] [2023-08-30 09:53:16,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:53:16,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:53:16,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:53:16,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:53:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-30 09:53:16,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 346 [2023-08-30 09:53:16,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 217 transitions, 2714 flow. Second operand has 6 states, 6 states have (on average 153.66666666666666) internal successors, (922), 6 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:53:16,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:53:16,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 346 [2023-08-30 09:53:16,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:53:48,573 INFO L130 PetriNetUnfolder]: 197956/291535 cut-off events. [2023-08-30 09:53:48,573 INFO L131 PetriNetUnfolder]: For 1872184/1872184 co-relation queries the response was YES. [2023-08-30 09:53:49,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175257 conditions, 291535 events. 197956/291535 cut-off events. For 1872184/1872184 co-relation queries the response was YES. Maximal size of possible extension queue 8572. Compared 2484013 event pairs, 30081 based on Foata normal form. 8802/287739 useless extension candidates. Maximal degree in co-relation 1175218. Up to 86392 conditions per place. [2023-08-30 09:53:51,116 INFO L137 encePairwiseOnDemand]: 323/346 looper letters, 437 selfloop transitions, 274 changer transitions 0/719 dead transitions. [2023-08-30 09:53:51,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 719 transitions, 8773 flow [2023-08-30 09:53:51,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:53:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:53:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1913 transitions. [2023-08-30 09:53:51,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528901734104046 [2023-08-30 09:53:51,118 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1913 transitions. [2023-08-30 09:53:51,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1913 transitions. [2023-08-30 09:53:51,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:53:51,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1913 transitions. [2023-08-30 09:53:51,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 191.3) internal successors, (1913), 10 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:53:51,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:53:51,123 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:53:51,123 INFO L175 Difference]: Start difference. First operand has 126 places, 217 transitions, 2714 flow. Second operand 10 states and 1913 transitions. [2023-08-30 09:53:51,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 719 transitions, 8773 flow [2023-08-30 09:54:30,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 719 transitions, 8744 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:30,103 INFO L231 Difference]: Finished difference. Result has 141 places, 414 transitions, 7078 flow [2023-08-30 09:54:30,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7078, PETRI_PLACES=141, PETRI_TRANSITIONS=414} [2023-08-30 09:54:30,113 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 67 predicate places. [2023-08-30 09:54:30,113 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 414 transitions, 7078 flow [2023-08-30 09:54:30,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.66666666666666) internal successors, (922), 6 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:30,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:30,114 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:30,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 09:54:30,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:30,314 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:54:30,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:30,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1995253188, now seen corresponding path program 1 times [2023-08-30 09:54:30,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:30,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797599634] [2023-08-30 09:54:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:30,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:54:30,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:30,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797599634] [2023-08-30 09:54:30,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797599634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:54:30,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329760234] [2023-08-30 09:54:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:30,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:30,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:54:30,369 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:54:30,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 09:54:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:30,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:54:30,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:54:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:54:30,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:54:30,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329760234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:30,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:54:30,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-08-30 09:54:30,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128257986] [2023-08-30 09:54:30,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:30,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:54:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:54:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-30 09:54:30,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 346 [2023-08-30 09:54:30,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 414 transitions, 7078 flow. Second operand has 6 states, 6 states have (on average 153.66666666666666) internal successors, (922), 6 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:30,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:30,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 346 [2023-08-30 09:54:30,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:12,231 INFO L130 PetriNetUnfolder]: 216985/321249 cut-off events. [2023-08-30 09:55:12,232 INFO L131 PetriNetUnfolder]: For 2920694/2920986 co-relation queries the response was YES. [2023-08-30 09:55:14,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1471197 conditions, 321249 events. 216985/321249 cut-off events. For 2920694/2920986 co-relation queries the response was YES. Maximal size of possible extension queue 9674. Compared 2802965 event pairs, 38087 based on Foata normal form. 4840/312446 useless extension candidates. Maximal degree in co-relation 1471149. Up to 75876 conditions per place. [2023-08-30 09:55:15,436 INFO L137 encePairwiseOnDemand]: 324/346 looper letters, 585 selfloop transitions, 357 changer transitions 0/950 dead transitions. [2023-08-30 09:55:15,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 950 transitions, 14864 flow [2023-08-30 09:55:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:55:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:55:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1910 transitions. [2023-08-30 09:55:15,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520231213872833 [2023-08-30 09:55:15,438 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1910 transitions. [2023-08-30 09:55:15,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1910 transitions. [2023-08-30 09:55:15,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:15,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1910 transitions. [2023-08-30 09:55:15,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:15,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:15,442 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:15,443 INFO L175 Difference]: Start difference. First operand has 141 places, 414 transitions, 7078 flow. Second operand 10 states and 1910 transitions. [2023-08-30 09:55:15,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 950 transitions, 14864 flow [2023-08-30 09:56:33,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 950 transitions, 14666 flow, removed 99 selfloop flow, removed 0 redundant places. [2023-08-30 09:56:33,417 INFO L231 Difference]: Finished difference. Result has 159 places, 597 transitions, 11935 flow [2023-08-30 09:56:33,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=6624, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11935, PETRI_PLACES=159, PETRI_TRANSITIONS=597} [2023-08-30 09:56:33,417 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 85 predicate places. [2023-08-30 09:56:33,417 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 597 transitions, 11935 flow [2023-08-30 09:56:33,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.66666666666666) internal successors, (922), 6 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:33,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:33,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:56:33,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 09:56:33,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-30 09:56:33,621 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:56:33,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:33,621 INFO L85 PathProgramCache]: Analyzing trace with hash 667183476, now seen corresponding path program 1 times [2023-08-30 09:56:33,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:33,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877879706] [2023-08-30 09:56:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:33,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:33,680 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 09:56:33,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:33,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877879706] [2023-08-30 09:56:33,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877879706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:33,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:33,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:33,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13854215] [2023-08-30 09:56:33,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:33,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:33,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:33,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:33,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:33,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 346 [2023-08-30 09:56:33,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 597 transitions, 11935 flow. Second operand has 7 states, 7 states have (on average 154.28571428571428) internal successors, (1080), 7 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:33,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:33,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 346 [2023-08-30 09:56:33,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:57:34,957 INFO L130 PetriNetUnfolder]: 230875/341709 cut-off events. [2023-08-30 09:57:34,957 INFO L131 PetriNetUnfolder]: For 3955516/3955516 co-relation queries the response was YES. [2023-08-30 09:57:36,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1718507 conditions, 341709 events. 230875/341709 cut-off events. For 3955516/3955516 co-relation queries the response was YES. Maximal size of possible extension queue 10427. Compared 2995786 event pairs, 51069 based on Foata normal form. 2906/330124 useless extension candidates. Maximal degree in co-relation 1718448. Up to 231503 conditions per place. [2023-08-30 09:57:38,576 INFO L137 encePairwiseOnDemand]: 325/346 looper letters, 825 selfloop transitions, 283 changer transitions 0/1116 dead transitions. [2023-08-30 09:57:38,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 1116 transitions, 18723 flow [2023-08-30 09:57:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 09:57:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 09:57:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2788 transitions. [2023-08-30 09:57:38,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371868978805395 [2023-08-30 09:57:38,579 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2788 transitions. [2023-08-30 09:57:38,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2788 transitions. [2023-08-30 09:57:38,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:57:38,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2788 transitions. [2023-08-30 09:57:38,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 185.86666666666667) internal successors, (2788), 15 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:38,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 346.0) internal successors, (5536), 16 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:38,588 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 346.0) internal successors, (5536), 16 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:38,588 INFO L175 Difference]: Start difference. First operand has 159 places, 597 transitions, 11935 flow. Second operand 15 states and 2788 transitions. [2023-08-30 09:57:38,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 1116 transitions, 18723 flow [2023-08-30 10:00:41,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1116 transitions, 18595 flow, removed 64 selfloop flow, removed 0 redundant places. [2023-08-30 10:00:41,566 INFO L231 Difference]: Finished difference. Result has 180 places, 692 transitions, 14858 flow [2023-08-30 10:00:41,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=11240, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14858, PETRI_PLACES=180, PETRI_TRANSITIONS=692} [2023-08-30 10:00:41,567 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 106 predicate places. [2023-08-30 10:00:41,567 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 692 transitions, 14858 flow [2023-08-30 10:00:41,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 154.28571428571428) internal successors, (1080), 7 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:41,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:41,568 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:00:41,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 10:00:41,568 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:00:41,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1461380961, now seen corresponding path program 1 times [2023-08-30 10:00:41,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:41,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732279853] [2023-08-30 10:00:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:41,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:41,623 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 10:00:41,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:41,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732279853] [2023-08-30 10:00:41,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732279853] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:41,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:41,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:00:41,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576235084] [2023-08-30 10:00:41,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:41,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:00:41,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:41,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:00:41,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:00:41,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 346 [2023-08-30 10:00:41,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 692 transitions, 14858 flow. Second operand has 7 states, 7 states have (on average 154.14285714285714) internal successors, (1079), 7 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:41,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:41,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 346 [2023-08-30 10:00:41,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15